Skateboard bearings are an important part of skateboards. Their main function is to connect the wheels and brackets to ensure that the wheels can rotate smoothly. The design and material of skateboard bearings have an important impact on their performance. [video width="2120" height="1080" mp4="https://www.xzballbearing.com/wp-content/uploads/2024/11/11月20日.mp4"][/video] Basic components of skateboard bearings Skateboard bearings are composed of the following main parts: Seals: Prevent dust and other debris from entering the bearing to extend its service life. Rolling element: Usually steel balls or ceramic balls, each set of bearings contains 7 rolling elements. Cage: Separate the rolling elements evenly to prevent them from falling off. Inner and outer rings: The inner and outer rings provide grooves for the rolling elements to roll. Materials and types of skateboard bearings Skateboard bearings are mainly made of two materials: metal and ceramic. Metal bearings are usually made of bearing steel, which is cost-effective but has poor rust resistance; stainless steel bearings have good rust resistance, but are more expensive; ceramic bearings are composed of ceramic balls and metal shells, which have self-lubricating functions and high wear resistance, but are the most expensive. Grades and selection criteria for skateboard bearings The grades of skateboard bearings are usually expressed in ABEC (Annular Bearing Engineering Committee) standards, from ABEC-1 to ABEC-9. The higher the grade, the higher the precision and speed. However, the ABEC rating standard does not take into account factors such as impact force and side-slip torque in skateboarding, so some skateboard companies do not use the ABEC standard. Care and maintenance of skateboard bearings In order to keep skateboard bearings in good condition, they need to be cleaned and oiled regularly. When cleaning, remove the bearings from the wheels, wipe off the oil and stains with a paper towel, and clean them once a week. Oiling is required after cleaning. You can use cooking oil or special lubricants, and avoid using corrosive liquids such as gasoline. In summary, skateboard bearings are not only key components of skateboards, but their materials, grades, and maintenance methods will directly affect the performance and user experience of skateboards.
Ceramic ball materials: The main materials of ceramic balls include Zirconia (ZrO2),alumina (Al2O3), silicon nitride (Si3N4) and silicon carbide(SIC). These materials have excellent properties such as high hardness, wear resistance and high temperature resistance, making ceramic balls widely used in many fields. Material Si3N4 Balls ZrO2 Balls SIC Balls Al2O3 Balls Density 3.23g/cm³ 7.85g/cm³ 3.15g/cm³ 3.95g/cm³ Hardness 1500-1800HV 700HV 2000HV 1800HV High Temp. 800℃ 300℃ 1500℃ 1850℃ The main advantages of ceramic balls include the following aspects: •Good fluidity: Ceramic balls have excellent fluidity, which can improve production efficiency, reduce energy consumption, and improve product dimensional stability and prevent warping. •High precision: Ceramic balls can replace metal bearings to improve the stability and precision of equipment. Energy saving and consumption reduction: Due to the small specific gravity and light weight of ceramic balls, they can be used in tube mills to save energy and reduce consumption. •Good thermal stability: Ceramic balls have a high melting point and do not decompose at high temperatures, which can improve the flame retardancy and thermal deformation temperature of products. •Good insulation: Ceramic balls have high specific resistance and low water absorption, which are suitable for the production of cable insulation materials. •Strong corrosion resistance: Ceramic balls are mainly composed of aluminum silicate, which can remain stable in various organic solutions and acid and alkali solvents. •Oil-free self-lubricating: Ceramic balls have oil-free self-lubricating properties, low friction coefficient, suitable for high-speed operation, and long service life. •High speed and acceleration capability: Ceramic bearings have high speed and acceleration capabilities, long life, wear resistance, low friction temperature rise, minimal lubrication required, low friction loss, good heat resistance, high durability, low torque, non-magnetic and non-conductive, low magnetic permeability. ①Silicon Nitride Ceramic Balls (Si₃N₄) Silicon nitride ceramics have a wide range of applications, including but not limited to high-temperature structural materials, electronic packaging, wear-resistant parts, high-temperature furnaces, aerospace parts, etc. Due to its excellent performance, silicon nitride ceramics are often the preferred material in many applications that need to withstand extreme environments such as high temperature, high speed, and strong corrosive media. ②Zirconia Ceramic Balls(ZrO2) Zirconia ceramics are widely used in mechanical seals, ball mill media, ceramic bearings, automotive engine parts, paper machine dehydration equipment and other fields due to their excellent performance. In addition, in watchmaking, zirconia ceramics have become an ideal environmentally friendly material due to its insulation, high density, beautiful and durable characteristics. ③Silicon Carbide Ceramic Balls(SIC) Silicon carbide ceramics are widely used in chemical machinery, energy and environmental protection, semiconductors, metallurgy, national defense and military industries. Specific applications…
Specific Applications of Thin-Walled Bearings in Robots Thin-wall bearings are mainly used for joints and rotating parts in robots. For example, in restricted and small-sized parts of industrial robots such as elbows, wrists, and waists, thin-wall bearings are widely used because of their lightweight design and high-precision characteristics. In addition, thin-walled bearings are also used in rotary tables of machining centers, medical instruments, measuring instruments, etc. Advantages of thin-walled bearings in robots •Lightweight design: Thin-wall bearings are lightweight and suitable for joints with limited space in robots, which can significantly reduce the overall weight of the robot. •High precision: Thin-walled bearings have high rotation positioning accuracy and can meet the needs of high-precision operation of robots. •High load-bearing capacity: Thin-wall bearings can withstand high axial, radial and overturning loads, ensuring stable operation of the robot under various working conditions. •Long life: Thin-walled bearings have a long service life, which can reduce maintenance frequency and reduce usage costs. Application examples of different types of thin-wall bearings in robots •Constant-section thin-walled bearings: This kind of bearing has the characteristics of high precision, high load-bearing capacity and low friction moment, and is widely used in the elbows, wrists, waist and other parts of industrial robots. •Crossed roller bearings: Crossed roller bearings are widely used due to their lightweight design and high load-bearing capacity when space is limited in robots. •Harmonic reducer bearings: The flexible wheel bearings and deep groove ball bearings in the harmonic reducer are also commonly used thin-walled bearing types in robots. In summary, the application of thin-walled bearings in robots not only improves the performance and accuracy of the robot, but also reduces the weight and cost of the robot. It is an indispensable key component in modern robot design. About XZBRG: Xinzhou Bearing is one of the leading providers of China's Bearing Industry and a long-time partner of professional dealers. Xinzhou Bearing is one of the Custom Bearing Manufacturers and world wide Distributors of all types of Bearings,specializing in Ceramic balls, Bearings (Inch & Metric Sizes) made from Ceramic (Si3N4/ZrO2), Stainless (440c/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level. We are a factory and foreign trade company producing bearings, and the prices support both retail and wholesale. Interested friends can contact me 💌： xzindustry@gmail.com Whatsup: 8613524742876 https://www.xzballbearing.com/
We produced extra stock, but really premium high quality. Minimum order quantity is 500 pcs. 💌： xzindustry@gmail.com Whatsup: 8613524742876 https://www.xzballbearing.com/ Part Number Stock QTY Brand Level Net discount Retail price Hybrid Ceramic 6204-2RS/ZZ 3524 Our own/Your LOGO Abec 3 Z2V2 2.73 0.67 8.19 Hybrid Ceramic 6205-2RS/ZZ 3221 Our own/Your LOGO Abec 3 Z2V2 2.91 0.67 8.73 Hybrid Ceramic 6206-2RS/ZZ 3550 Our own/Your LOGO Abec 3 Z2V2 5.31 0.67 15.93 Hybrid Ceramic 6303-2RS/ZZ 3216 Our own/Your LOGO Abec 3 Z2V2 4.21 0.67 12.63 Hybrid Ceramic 6304-2RS/ZZ 3056 Our own/Your LOGO Abec 3 Z2V2 4.281 0.67 12.843 Hybrid Ceramic 6305-2RS/ZZ 2499 Our own/Your LOGO Abec 3 Z2V2 6.27 0.67 18.81 Hybrid Ceramic 6306-2RS/ZZ 2504 Our own/Your LOGO Abec 3 Z2V2 10.63 0.67 31.89 Hybrid Ceramic 6307-2RS/ZZ 2433 Our own/Your LOGO Abec 3 Z2V2 12.21 0.67 36.63 Hybrid Ceramic 6308-2RS/ZZ 2589 Our own/Your LOGO Abec 3 Z2V2 15.8 0.67 47.4 Hybrid Ceramic 6309-2RS/ZZ 2561 Our own/Your LOGO Abec 3 Z2V2 23.75 0.67 71.25 Hybrid Ceramic 6310-2RS/ZZ 2455 Our own/Your LOGO Abec 3 Z2V2 34.25 0.67 102.75 Hybrid Ceramic 6004-2RS/ZZ 2011 Our own/Your LOGO Abec 3 Z2V2 2.05 0.67 6.15 Hybrid Ceramic 6005-2RS/ZZ 5023 Our own/Your LOGO Abec 3 Z2V2 2.21 0.67 6.63 Hybrid Ceramic 6006-2RS/ZZ 5230 Our own/Your LOGO Abec 3 Z2V2 3.13 0.67 9.39 Hybrid Ceramic 6007-2RS/ZZ 4562 Our own/Your LOGO Abec 3 Z2V2 3.53 0.67 10.59 Hybrid Ceramic 6008-2RS/ZZ 4602 Our own/Your LOGO Abec 3 Z2V2 4.11 0.67 12.33 Hybrid Ceramic 6009-2RS/ZZ 4539 Our own/Your LOGO Abec 3 Z2V2 4.93 0.67 14.79 Hybrid Ceramic 6010-2RS/ZZ 3498 Our own/Your LOGO Abec 3 Z2V2 5.63 0.67 16.89
1.Working principle of linear bearings: The working principle of linear bearings is to support and guide mechanical parts through the movement of rolling elements between the bearing sleeve and the bearing seat. The rolling elements roll cyclically along the track groove formed by the housing and the retainer, so that the linear bearing makes linear reciprocating motion relative to the guide shaft. The rolling of the rolling elements can achieve more efficient motion with low friction resistance. 2.Structural composition of linear bearings: Linear bearings are mainly composed of bearing outer rings, retainers, steel balls and sealing rings. The bearing outer ring is the main part of the linear bearing and bears the load from the outside; the retainer is used to fix the position of the steel balls to prevent the steel balls from colliding with each other during movement; the steel balls are the rolling elements of the linear bearings, rolling between the bearing outer ring and the guide shaft to achieve linear motion; the sealing ring plays a role in dustproof and waterproofing, ensuring that the linear bearing can work normally in harsh environments. 3.Features of linear bearings: Linear bearings have the advantages of low friction, low noise, low inertia force, and corrosion resistance. Since the load-bearing ball is in point contact with the bearing outer sleeve, the load is small. The steel ball rotates with minimal friction resistance, so that high-precision smooth movement can be achieved. Linear bearings are widely used in electronic machinery, printing machinery, material handling machinery and various precision measuring instruments. There are many specifications and models of linear bearings, the most common of which are LM, LME, LIN-11 and LIN-12 series. The LM series is mainly used in Asia and Southeast Asia, using metric dimensions and an outer diameter tolerance of h7. The LME series is mostly used in Europe and the United States, using imperial or metric dimensions, and an outer diameter tolerance of g6. LIN-11 represents the European standard plastic linear bearing, which is installed with a retaining spring limiter. The LIN-12 series is a narrow design, which is directly installed with its outer diameter and the mounting seat hole in a tight fit to save installation space. 4.Specific parameters Specific parameters include model, number of ball rows, main dimensions, radial runout, basic rated load, inner diameter, outer diameter, length, outer stop groove width, dynamic and static rated load, etc. For example, the parameters of LM6UU are: 4 ball rows, 6mm inner diameter, 17mm outer diameter, 13.5mm length, 1.1kgf dynamic rated load, 27kgf static rated load, etc. The installation methods of linear bearings mainly include screw fixing, clamping fixing, locking device fixing and welding fixing. 5.Screw fixing: The linear bearing…
Crossed Roller Bearings Crossed roller bearings are crucial in high-precision turntables because of their high load-bearing capacity and rigidity. These bearings have rollers that cross each other at 90-degree angles. This special design lets them handle all kinds of loads at the same time while working accurately. These bearings are made from strong materials like AISI 52100. They're compact yet can handle heavy loads without bending much. They're great for space-constrained applications in medical and robotics fields where precision is key. The difference between slewing bearings and crossed roller bearings Structure, application fields, performance characteristics Slewing bearings and crossed roller bearings have significant differences in structure, application fields and performance characteristics. Structural differences Slewing bearing: It is usually composed of a worm, a slewing bearing, a housing, a motor and other components. It looks like a plate, so it is also called a "slewing bearing". It can withstand large axial load, radial load and overturning moment at the same time, and is suitable for mechanical equipment that withstands huge overturning moment and performs relative rotational motion. Crossed roller bearing: The inner ring is divided, the outer ring rotates, and the rolling elements are arranged vertically with each other on the V-shaped groove. This structure enables crossed roller bearings to withstand radial and axial loads at the same time, and can be assembled in all directions, making it suitable for high-precision, high-speed application scenarios. Differences in application areas Slewing bearings: Widely used in heavy machinery and equipment such as truck cranes, railway cranes, port cranes, excavators, CT machines, tanks, etc., as well as in situations that require high load-bearing capacity and complex motion control. Crossed roller bearings: Mainly used in high-precision, high-speed equipment such as high-speed machine tools, precision rotary indexing tables, vertical and horizontal boring machines, vertical grinders, rotating cameras, industrial robot joints, CNC turntables, etc. . Differences in performance characteristics Slewing Bearing: It has high load-bearing capacity, high efficiency and good sealing performance, and is suitable for fields that require high working life. It has a high level of precision, low radial runout and axial runout, and low operating noise, making it suitable for high-precision and low-noise working environments. Crossed roller bearing: It has the characteristics of high rotation efficiency, low heat dissipation, and low grease consumption. Due to its compact structure, it can withstand multi-directional loads and is suitable for applications where space is limited but high precision and rigidity are required. In summary, slewing bearings and crossed roller bearings have their own advantages in structure, application fields and performance characteristics. Choosing the appropriate bearing needs to be determined based on specific application requirements and environmental conditions. Feature Turntable…
Characteristics of high temperature bearings: The main feature of high temperature bearings is excellent high temperature resistance, which can run stably in high temperature environment and ensure the continuous operation of equipment. Specifically, high temperature bearings have the following core characteristics: Excellent high temperature resistance: High temperature bearings can withstand high temperatures from hundreds of degrees Celsius to thousands of degrees Celsius without failure, ensuring the continuous operation of equipment under high temperature conditions. Careful material selection: Usually made of high temperature resistant alloy steel, ceramics or other special materials, these materials are not only resistant to high temperatures, but also have good corrosion resistance and wear resistance. Structural optimization: By improving the internal structure of the bearing, such as adding heat dissipation channels, optimizing the raceway design, etc., the heat dissipation efficiency is improved and the thermal expansion and thermal stress problems caused by high temperature are reduced. Lubrication system innovation: Solid lubricants, high temperature greases or specially designed lubrication systems are used to ensure good lubrication effects at high temperatures and reduce friction and wear. Lifetime lubrication: No grease needs to be added during use, reducing maintenance costs and complexity. High cost performance: The quality of high temperature bearings is dozens of times higher than that of ordinary bearings, and they have won the trust of customers with their ultra-long service life. In addition, high temperature bearings also have good sealing properties, which can effectively prevent external pollutants from entering the bearings and reduce bearing wear and failures. These characteristics make high temperature bearings widely used in high-end fields such as aerospace, new energy vehicles, etc. Selecting the Right Lubrication for Different Temperature Ranges Temperature Range Recommended Lubrication Up to 260°C Fluorinated grease can be effective. Exceeding 260°C Layer lattice materials (solid lubricants) are required, but they may not be suitable for clean environments. Above 500°C Non-lubricated ceramic bearings are often used due to the lack of effective lubricants. Material Selection for High Temperature Bearings Ceramic Bearing Hybrid Bearing Steel Bearings(M50, BG42, and XD16N steels) Advantages: High heat resistance Low thermal expansion Corrosion resistance Non-magnetic Non-conductive Advantages: Combines the strength and durability of steel rings with the low-friction and high-heat resistance of ceramic balls. Advantages: Can handle extreme speeds and temperatures. Offers high strength and durability. Applications: Ideal for use in furnaces Aerospace components Cleanroom equipment Applications: High-speed machinery electric motors high-temperature industrial environments Applications: Steel mills aerospace turbines high-performance machinery
6200 bearing is a deep groove ball bearing, mainly used to bear radial load or combined load of radial and axial simultaneously. This kind of bearing has the characteristics of small friction resistance, high speed, simple structure and easy use, so it is widely used in various mechanical equipment. 6200 bearing is a deep groove ball bearing, mainly used in centrifuges, half-axle bolts, CNC punching machines, cylindrical gear reducers, electric motors for electric vehicles, pressure reducing valves, CNC cutting, electrodialysis equipment, electrical instruments, automotive lights and other equipment. Bore diameter: 10 mm, outer diameter: 30 mm, width: 9 mm. （bearings 10x30x9mm） The role of shields and seals in bearings Shields (Z and ZZ) in bearings serve important purposes: Protect against contamination: Shields prevent dust, dirt and other small particles from entering the bearing. This keeps the bearing clean and reduces the potential for wear and damage. Maintain lubrication: Shields keep grease or oil inside the bearing and keep dirt out. This allows the bearing to run smoothly and efficiently, reducing friction and heat. Features of "6200Z" -Single Shield: The 6200Z bearing has a single shield that offers good protection against dirt and dust. -Lower Friction: 6200Z Bearing Offers reduced friction compared to fully sealed bearings. -Heat Dissipation: 6200Z Bearing helps remove heat easily, making it great for high-speed operations. Features of "6200ZZ" -Double Shielded (ZZ): The 6200ZZ bearing offers superior protection against outside contaminants. -Minimal Maintenance: It needs little upkeep because it has sealed lubrication. -Ideal for Harsh Environments: Perfect for areas exposed to dust, dirt, and debris. Learn more about XZBRG: We are a factory and foreign trade company producing bearings, and the prices support both retail and wholesale. Interested friends can contact me ?： xzindustry@gmail.com Whatsup: 8613524742876 https://www.xzballbearing.com/
What Are Dental Bearings? Dental handpiece bearings are special parts used in dental handpiece. They support rotating components, ensuring smooth operation and reducing friction. Materials Commonly Used in Dental Bearings: 1.Steel: --Durability: Stainless steel is commonly used for its strength and resistance to wear and corrosion. --Cost-Effective:Steel bearings are less expensive and more accessible. --Performance: High quality Steel bearings provide reliable performance in high-speed applications. They may require regular maintenance to prevent rust and wear. 2.Ceramic: --Corrosion Resistance: Ceramic bearings are resistant to corrosion and wear. --Low Friction: They provide lower friction compared to steel, enhancing the smooth operation of dental handpieces. --Lightweight: Ceramic materials are lighter than steel. --Higher Cost: They tend to be more expensive than steel bearings but offer longer lifespans and reduced maintenance needs.
Slewing Bearing Slewing bearing is also called turntable bearing, and some people also call it: rotating bearing, slewing bearing. Introduction Slewing bearing is a large bearing that can withstand comprehensive loads, and can withstand large axial, radial loads and overturning moments at the same time. Slewing bearings generally have mounting holes, internal or external gears, lubricating oil holes and sealing devices, so that the main machine design structure is compact, easy to guide and easy to maintain. There are four series of slewing bearings: gearless, externally geared and internally geared four-point contact ball bearings, double-row angular contact ball bearings, cross cylindrical roller bearings, cross tapered roller bearings and three-row cylindrical roller composite bearings. Among them, four-point contact ball bearings have higher static load capacity, cross cylindrical rollers have higher dynamic load capacity, and the pre-interference of cross tapered roller bearings can make the bearings have greater support rigidity and rotation accuracy. The three-row cylindrical roller combination bearings are led to the height of the bearing due to the increase in load-bearing capacity. Various forces are borne by different raceways. Therefore, under the same force, the bearing diameter can be greatly reduced, so it has the characteristic of making the host more compact. It is a slewing bearing with high load-bearing capacity. Slewing bearings are widely used in large slewing devices of lifting machinery, mining machinery, construction machinery, port machinery, ship machinery and equipment, as well as high-precision radar machinery and missile launchers. At the same time, various special structure slewing bearings can also be designed, developed and produced according to the specific requirements of users. Basic Structure Slewing drive is usually composed of worm, slewing bearing, housing, motor and other components. Since the core components use slewing bearings, they can simultaneously withstand axial force, radial force, and tipping moment. There are many forms, but the structural composition is basically the same. From left to right (upper part): 1. Outer ring (with or without teeth) 2. Sealing belt 3. Rolling element (ball or roller) 4. Oil nozzle From left to right (lower part): 1. Blockage 2. Blocking pin 3. Inner ring (with or without teeth) 4. Isolation block or cage 5. Mounting hole (wire hole or light hole) Application: Slewing bearings are widely used in real industry and are called "machine joints". They are mainly used in: automobile cranes, railway cranes, port cranes, marine cranes, metallurgical cranes, container cranes, excavators, filling machines, CT machine standing wave therapy devices, navigation instruments, radar antenna bases, missile launchers, tanks, robots, revolving restaurants, etc.
Linear motion system: Metal linear bearings are a kind of linear motion system produced at low cost, which are used for unlimited stroke and cylindrical shaft. They are widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery, etc. Introduction: Linear bearings are a kind of linear motion system, which are used for linear stroke and cylindrical shaft. Since the load-bearing ball is in point contact with the bearing outer sleeve, the steel ball rolls with the minimum friction resistance, so the linear bearing has low friction and is relatively stable. It does not change with the bearing speed, and can obtain smooth linear motion with high sensitivity and high precision. Linear bearing consumption also has its limitations. The most important thing is that the impact load capacity of the bearing is poor, and the load-bearing capacity is also poor. Secondly, the linear bearing has large vibration and noise when moving at high speed. The automatic selection of linear bearings is included. Linear bearings are widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery, etc. Since the load-bearing ball is in point contact with the bearing, the load is small. The steel ball rotates with very small friction resistance, so that high-precision smooth motion can be obtained. Plastic linear bearings are a kind of linear motion system with self-lubricating characteristics. The biggest difference between them and metal linear bearings is that metal linear bearings are rolling friction, and the bearing and the cylindrical shaft are in point contact, so this type is suitable for low-load high-speed motion; while plastic linear bearings are sliding friction, and the bearing and the cylindrical shaft are in surface contact, so this type is suitable for high-load medium- and low-speed motion. Features: Linear bearings are used in conjunction with hardened linear drive shafts. A system for infinite linear motion. Because the load ball and the hardened drive shaft are in point contact, the allowable load is small, but during linear motion, the friction resistance is minimal, the precision is high, and the motion is fast. Classification: (1) Standard type, clearance adjustment type linear bearings, open type linear bearings, extended type linear bearings, general type linear bearings (2) Flange type linear bearings can be divided into: round flange type, square flange type, elliptical flange type, guide round flange type, guide square flange type, guide elliptical flange type, and extended round flange type. According to specifications: It is divided into two series, namely LM and LME series. Its code LM series is used in Asia, Southeast Asian countries, Japan, South Korea,…
Turbocharger rolling bearing parameters and uses 1 Structure and parameters Picture 1 1.1 Contact angle The size of the contact angle affects the orientation of the bearing to radial load and axial load. An excessively large contact angle will increase the roll-to-roll ratio, especially at high speeds, which will cause the bearing to heat up and wear severely, seriously affecting the efficiency and service life of the rolling bearing. The rotating shaft of the automotive turbocharger reaches 140,000 to 170,000 revolutions per minute in the working state. Based on previous design experience, the contact angle of the rolling bearing of RF708 is selected as 15° (Figure 1). 1.2 Ball diameter and number of balls When the ball diameter is constant, the more balls there are, the smaller the contact stress between the rolling element and the ferrule and the larger the roll-to-roll ratio. The ball diameter and the number of balls have a significant effect on the size of the cage beam. Excessive ball diameter and excessive number of balls will lead to a reduction in the size of the cage center diameter beam, resulting in a reduction in its strength. Considering the ultra-high-speed operating conditions of the RF708 bearing, especially in micro-turbojet engines, the thermal load of the bearing is the main factor affecting the bearing life, so the ball diameter is finally set to 3.969mm, and the number of balls for high-speed is 8 (Picture 2), and the number of balls for heavy load is 9. Picture 2 1.3 Outer ring structure In order to facilitate installation, the outer ring adopts the form of positioning at both ends of the outer side. The two ends of the side are matched with the supercharger seat ring, and the radius of the middle part is slightly smaller than the matching part at both ends. The standard length of the outer ring is 41.65mm (Figure 1, Figure 3), and the shape is determined according to the structure of the matching turbocharger. In view of the fact that the lubricating oil cannot enter the bearing through both ends of the bearing, oil grooves are designed on both sides of the outer ring of the bearing, and oil holes are opened radially in the grooves. The lubricating oil is sprayed to the parts that need lubrication through the oil holes. Under the condition of ensuring that the oil injection is as uniform as possible, the number of oil injection holes is set to 2.According to the outer ring structure and processing technology, the angle between the axis of the oil injection hole and the axis of…
Supply all bearings for turbo pumps with ultra-high speed rotational performance under cryogenic environment NTN Corporation (hereafter, NTN) supplies all bearings for turbo pumps of engine in the second H3 Launch Vehicle (H3TF2: Test Flight No.2) launched from Tanegashima Space Center at 9:22:55 (JST) on February 17. In order for a rocket mounted with satellites or other objects to fly, it is necessary to burn liquid hydrogen and liquid oxygen at high pressure to inject a large amount of gas. Turbo pumps feed fuel of liquid hydrogen and oxidizer of liquid oxygen oxidizer into the combustion chamber of the engine by rotating inner impeller at high speed. Bearings used in the impeller support ultra-high speed rotation of rocket that is comparable to a jet aircraft with a dmn value*1 of approx. 2.8 million even in cryogenic environment of liquid hydrogen (-253℃) and liquid oxygen (-183℃). General lubricants including oil and grease got frozen at cryogenic temperatures, so the bearings adopt NTN's proprietary solid lubricant that demonstrates lubricating performance even at cryogenic temperatures. In addition, the bearings also use high-strength retainer made from reinforced fiberglass to meet these harsh environment. The engine of the “H3 Launch Vehicle” has a higher driving force than one of the preceding model of “H-IIA Launch Vehicle,” in order to launch satellites of various sizes. Thus, each component is required to have high rigidity, and the bearings for “H3 Launch Vehicle” turbo pumps are also designed to have larger diameters so that they can receive greater preload. As bearings become larger in diameter, the centrifugal force of balls used in bearings becomes larger. For this reason, NTN applies rolling elements (balls) made from ceramics for bearings. It is the first time to apply ceramics balls for commercial rockets produced in Japan. The use of ceramics balls, which is more lightweight than balls made from metal, suppresses the centrifugal force of balls during rotating and achieves high speed rotational performance with dmn value 2.88 million. NTN has been supplying bearings to a number of rockets produced in Japan for many years, including “H-I Launch Vehicle” launched in 1986, “H-II Launch Vehicle” and “H-IIA Launch Vehicle.” As NTN products are highly evaluated in the aviation field as well, NTN has been supplying bearings to major global jet engine manufacturers. NTN will continue to contribute to the development of the aerospace field by developing and providing high quality and high performance products used in space. An indicator that expresses the rotational performance of bearings and it is multiplied bearing pitch circle diameter (mm) by rotational speed (min-1) NTN's history in aerospace field 1986 NTN constructed Japan's first plant exclusively for aerospace bearings (Kuwana Works, in Mie Prefecture) “H-I Launch…
ABB has launched a new version its IE5 SynRM (synchronous reluctance motor) that combines the benefits of ultra-premium energy efficiency with highly effective liquid cooling. The new design sets a new benchmark for high power output and reliability in a compact footprint. Customers can use IE5 SynRM Liquid-cooled motors to save energy costs and cut emissions in new projects or as a drop-in replacement for less efficient motors. They are ideally suited to a wide range of industries including marine propulsion, rubber and plastics production, and food and beverage. A major advantage of the IE5 SynRM Liquid-cooled motors is that they are much more efficient than the traditional liquid-cooled induction motors in current use that offer significant potential for upgrading with energy-saving technology. Energy efficiency is crucial to optimizing the total cost of ownership (TCO) of an electric motor because the cost of the energy to run it throughout its life accounts for around 97 percent of a motor’s TCO, with the purchase cost accounting for about two percent. IE5 motors have 40 percent lower energy losses than commonly used IE3 motors. This makes the payback time for selecting an IE5 instead of an IE3 motor often less than one year. Reliability is improved by highly effective cooling combined with the cool SynRM rotor and cooling ribs on the bearing assembly that reduces the operating temperature of the bearings. This helps to increase the lifetime of this key component and reduce maintenance needs. The motors are robust, with tight seals to keep out moisture, dirt and dust, and a smooth outer surface to prevent dust build-up. This makes them perfect for demanding applications that require high power density where space is restricted such as marine propulsion systems and thrusters. Furthermore, the motors do not need fans or ventilation, so they do not disturb the surrounding air or release heat into the local environment. This is a major benefit in processes that are impacted by airflow, such as rubber and plastics production, and food and beverage applications like chocolate conche machines. With no fans, the motors also enhance the working environment by reducing noise levels. Stefan Floeck, division president IEC Low Voltage Motors, ABB, says: “ABB pioneered both SynRM technology and liquid cooling for induction motors. Now we have brought them together in our IE5 SynRM Liquid-cooled motor that enables customers to enjoy the benefits of ultra-premium efficiency in an even wider range of applications. It is yet another world-first for this series following the launch of our IE5 SynRM Increased Safety motor for hazardous areas.” (https://www.powertransmission.com) More About XZBRG: Xinzhou Bearing Industrial Inc. is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball,…
In the demanding environment of underground and hard rock mining, equipment reliability and performance are paramount. Tony Tormey, Motion category manager for industrial bearings, emphasises the significance of selecting the right bearings for mining applications. “Timken sets the industry standard for tapered roller bearing quality and performance,” Tormey said. “With their superior quality and exceptional performance, Timken tapered roller bearings are supporting the mining industry with extended maintenance periods. “Timken tapered roller bearings boast enhanced surface finishes and optimised internal geometry, resulting in reduced energy consumption. This not only improves overall efficiency but also contributes to cost savings for mining operations. “One of the critical advantages of Timken tapered roller bearings lie in their positive roller alignment. This feature ensures longer bearing life and greater reliability, even in harsh mining environments where loads can be intense.” The beauty of these bearings is that they can be used in a number of applications within the underground and hard rock mining industry. Cutter heads, for instance, play a crucial role in excavating coal or minerals. Tormey highlighted that Timken tapered roller bearings offer robust support and smooth rotation for cutter heads. “This optimised performance enhances the efficiency and longevity of the cutter heads, ensuring optimal mining operations,” he said. Gear drives are vital components of mining equipment like conveyors, crushers, and mills. (https://www.australianmining.com.au) More About XZBRG: Xinzhou Bearing Industrial Inc. is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball, Needle, and Roller types (Inch and Metric Sizes) made from Ceramic (Si3N4/ZrO2), Stainless (440c/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level. We work directly with our OEMs and Bearing Distributors. Our engineers can help you with bearing, shaft and housing tolerances as well as semiconductor applications, cryogenic applications, extreme hostile environments, and extreme temperatures environments. We also stock other manufacturer’s bearings. We distribute bearings for extreme high temperature. We can help design/manufacture any bearing. 2024 New Week XZBRG Product Recommendation: Deep Groove Ball Bearings： The structure of deep groove ball bearing is simple, and it is easy to achieve higher manufacturing precision compared with other types, so it is convenient for series and mass production; The manufacturing cost is also low, and the use is extremely common. Deep groove ball bearings are the most widely used bearing type and are extremely versatile. They have low friction and are optimized for low noise and low vibration to achieve high speeds. http://xinzhou.bearingshow.net/product-cat/deep-groove-ball-bearings/
Nord Drivesystems is once again attending the International Production and Processing Expo (IPPE) to showcase their solutions for the poultry and meat processing industry. Nord’s modular product system includes compact gear units, high-efficiency electric motors, and precise, intelligent electronic controls with a variety of surface protection options. This year’s expo is taking place January 30 – February 1, 2024, at the Georgia World Congress Center in Atlanta, GA. Visit Nord at Booth BC-40087 to see these specialized solutions: Smooth Surface Gear Units and Motors Smooth surface gear units are made from a high-strength, aluminum alloy housing that provides an easy-to-clean surface with an optimized design that reduces the number of trapped particles. Available gear units include a range of Nordbloc.1 helical inline gear units, Nordbloc.1 helical bevel 93.1 series, and Universal SMI worm gear units. Additional protection options such as potted terminal boxes, Quadrilip seals, condensation drain holes, and moisture resistant varnished dipped windings are also available to keep moisture and unwanted debris from entering the gear unit. Smooth surface IE3 motors with a variety of protective coatings and finishes are also available in a HM series. Overhead Conveyor Drives Overhead conveyor drives feature heavy-duty construction and high-quality machined components to provide long lasting performance. The drives have two main features: a standard VL3 spread bearing design with a dry cavity that enables the drive to handle high overhung loads and an optimized oil leakage protection system with Quadrilip seals. With their output mounting flange and shaft, they allow for easy drop-in replacement for industry standard footprints. Thanks to their energy efficiency and minimal maintenance requirements, overhead conveyors have a low total cost of ownership, long service life, and deliver reliable operation. Screw Conveyor Package Nord’s Screw Conveyor Package is a compact, cost-effective alternative to traditional screw conveyor drives and is available for Unicase parallel shaft gear units and Unicase helical bevel gear units. Closely stepped speed ratios combined with a directly coupled motor or NEMA C-face input eliminate the need for top motor mounts, pulleys, belts, and guards, minimizing parts for easier maintenance, increased reliability, and superior drive performance. The package also features versatile mounting with multiple bolt patterns, a standard CEMA flange and shaft assembly, and a Quadrilip sealing system to protect the drive from contaminates. IE5+ Synchronous Motors/DuoDrive Integrated Gear Unit and Motor IE5+ permanent magnet synchronous motors are manufactured in-house at Nord and offer the highest efficiency currently available. The non-ventilated variant (N-design) offers a smooth surface for easy cleaning in hygienic environments and is fully compatible with their line of gear units and variable frequency drives. Thanks to their high efficiency and constant torque over a wide speed range, these motors can reduce the number…
Loads, life, fits, material, and lubrication must all be evaluated to ensure optimal performance of turbomachinery. Pumps and compressors are ubiquitous in industrial settings. These machines can be found anywhere there is a need to transport liquids or circulate or compress gasses. Manufacturing, chemical processing, food and beverage, construction, mining, oil and gas, agriculture, and power generation industries all employ the use of turbomachinery. Reliability and minimizing downtime are critical in these applications. Rolling bearings are integral to the operation of pumps and compressors and must be able to withstand moderate to heavy loading and harsh operating environments. A wide variety of ball, roller, and needle bearings can be found in these machines; however, this article will focus on the most common type of bearing used, the deep groove ball bearing. Benefits of using deep groove ball bearings include the ability to handle high speeds and carry loads in the radial—and to a lesser extent—axial, directions. To ensure reliable and efficient operation, correct bearing selection is an essential step in the design process of pumps and compressors. It is important to perform an analysis of the components and operating conditions from both a static and dynamic perspective to gain a complete understanding of the loads (both magnitude and direction) the bearings will encounter in the application. Deep groove ball bearings are designed to primarily carry radial loads , but they can also support moderate axial loads as well. In most turbomachinery applications, bearings are subjected to both radial and axial, or combined, loading. Once the loading is understood, the basic bearing life is calculated and then adjusted if necessary. This adjusted life is then compared to the desired design life to determine if the bearing is suitable for the application. Lastly, specifications including shaft and housing fits, bearing material, and lubrication need to be determined. Bearing Load Ratings Manufacturers of ball bearings typically publish load ratings—both static (Cor) and dynamic (Cr)—for each bearing part number they produce. The static load rating, or static capacity, is the amount of load a non-rotating bearing can support without causing permanent deformation to its rings and/or balls. Industry standards specify that a total deformation of 0.0001 of the rolling element diameter (at the center of the most heavily loaded element) is acceptable for most bearing applications. The dynamic load rating, or dynamic capacity, is the amount of constant radial load a rotating bearing can withstand for one million revolutions. While the methods used to calculate load ratings vary from one manufacturer to the next, both the American Bearing Manufacturers Association (ABMA) and the International Organization for Standardization (ISO) have published equivalent standards related to load ratings and bearing life: ABMA Standard 9—Load Ratings and Fatigue Life…
Both KTM and Bajaj service centers did not have the new part so had to clean and reuse the old seal. BHPian SunnyBoi recently shared this with other enthusiasts Next up the rear brakes. I went to a Bajaj dealer and I got a seal kit for a pulsar. Pretty much all Bajaj and dukes use the same rear caliper so it should work, hopefully. I popped into the KTM dealership and got a couple of new front caliper bolts since the old ones looked tired. Once I was back home, I remembered I should have gotten a new battery belt as the one on the bike now was close to breaking. Oh well, there is always a next time. First step was taking off the wheel. I had never taken off a rear wheel before - I struggled a LOT with it. I just knew for some reason I'd suck at this and I did not disappoint myself heh. Hopefully, I don't ever have to remove the rear wheel again! Took off the old rotor and ABS ring. This is 9 years of muck hidden behind the rotor. Things weren't so clean on the other side as well. There was a TON of rubber powder? as well as melted rubber. With the wheels done, I focussed back on the caliper. I made sure I removed the pads and extended the piston as much as possible by pumping on the pedal as much as possible. I pulled out the caliper and found the insides pretty clean with only a few black flakes. (https://www.team-bhp.com) More About XZBRG: Xinzhou Bearing Industrial Inc. is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball, Needle, and Roller types (Inch and Metric Sizes) made from Ceramic (Si3N4/ZrO2), Stainless (440c/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level. We work directly with our OEMs and Bearing Distributors. Our engineers can help you with bearing, shaft and housing tolerances as well as semiconductor applications, cryogenic applications, extreme hostile environments, and extreme temperatures environments. We also stock other manufacturer’s bearings. We distribute bearings for extreme high temperature. We can help design/manufacture any bearing. 2024 New Week XZBRG Product Recommendation: Miniature Bearing： Miniature bearings are sometimes referred to as instrument bearings and are used in applications as varied as gyros, anemometers, flow meters, miniature gearboxes, small motors and radio controlled models. Miniature ball bearings can be open or shielded, which helps prevent dirt from entering and lubricant from leaking out, and unflanged or flanged for easier plate mounting. Some miniature ball bearing options feature extended inner rings to help fit certain locking devices when a press fit is not possible. http://xinzhou.bearingshow.net/product/metric-flanged/
AirTrim, a designer and manufacturer of trim waste and dust containment systems, introduces the AirTrim Cutter Sharpening Program (ACSP) which returns Lundberg cutters to like new condition. Sharpening worn cutter blades increases efficiency and productivity while minimizing cutting costs and downtime. Worn cutter blades may look good, but without a sharp cutting edge they can miss cuts, leading to longer trim, higher bearing load, and ultimately shutdown of the cutter, stopping production altogether. ACSP can head off these issues before they become a problem and keep your production running at top speed. The process is straightforward, simple, and economical, and ideal for paper film and foil converting, printing, label making, direct mailing and fulfillment operations, and wherever trim waste cutters are used. Upon receiving cutters (without motors) along with 2-3 feet of material, AirTrim engineers will examine the cutter and advise if additional work is beneficial. They will then sharpen both the rotor and fixed blades to create a new cutting edge, reassemble the cutter with new bearings, and reset the cutter blade to cut the supplied material. The old bearings will be returned along with the cut bag sample along with the reconditioned cutting unit. AirTrim will also enroll interested parties in their reminder service for future cutter maintenance and provide a rugged, compact wooden shipping container for future trim cutter sharpening if desired. AirTrim ACSP is a just one aspect of the full scope of services provided for trim waste cutters. Cutter Sharpening is provided with industry leading lead times and is backed by the industry’s strongest warranty. For additional information on ACSP or other AirTrim products or services visit https://airtrim.com/services/#Trim-cutter-repair. AirTrim, Inc., is a leader in designing, building, and installing pneumatic material handling systems for United States and Canadian customers. From a centrally located New Carlisle, OH headquarters, they develop systems for a wide range of industries, including converting, food processing, fulfillment (digital printing), labelling, non-wovens and textiles, paper and tissue mills, printing, packaging, pharmaceutical and medical, plastics, recycling, and more. They evaluate each application individually to provide transmission and containment ideally suited for that situation. (https://www.textileworld.com) More About XZBRG: Xinzhou Bearing Industrial Inc. is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball, Needle, and Roller types (Inch and Metric Sizes) made from Ceramic (Si3N4/ZrO2), Stainless (440c/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level. We work directly with our OEMs and Bearing Distributors. Our engineers can help you with bearing, shaft and housing tolerances as well as semiconductor applications, cryogenic applications, extreme hostile environments, and extreme temperatures environments. We also stock other manufacturer’s bearings. We distribute bearings for extreme high temperature. We can help design/manufacture any…
This is a sign that the motorbike wheel bearing needs to be replaced, if it collapses first it could be a disaster. As a two-wheeled vehicle user, you should know the symptoms when a wheel bearing needs to be replaced. Wheel bearings that are damaged or worn out if not replaced immediately can cause accidents on the road. Like a motorbike that suddenly feels limp after hitting a hole in the road until the motorbike suddenly shakes at high speed. Symptoms of wheel bearings that have begun to fail are easy to recognize, as stated by Mulyadi Service Advisor Ahass Astra Motor Natar. "The tires feel like they are drifting to the right and left. Especially when cornering, it will be felt more and make the motorbike unstable," said Mulyadi. According to Mulyadi, many bikers still misunderstand front wheel bearing damage and a problem with the steering wheel. "If there is a problem with the steering wheel, generally when you turn the steering wheel or handlebars become heavy or even too light accompanied by a creaking sound in the steering area. "Meanwhile, if the front wheel bearing has a problem, the tire or rim seems to run to the left and right when used," he added when met at Ahass Astra Motor Natar. Mul also added that checking the condition of the bearing or bearing on the front rim of the motorbike is actually quite easy. "When the motorbike is parked, use the middle stand or paddock. Then focus on the front wheels. "Then shake the front rim with both hands. If when you shake it you find that there is looseness in the rim axle (oblak), you can be sure that the front wheel bearing or klaher needs to be replaced," he explained again. Finally, Mul revealed that the wheel bearing damage was apparently caused by several things. "Usually because we often carry heavy loads, we break through damaged roads or we often get hit by floods that almost submerge the wheels," he said. Therefore, driving behavior plays a very important role in maintaining the durability of the bearings in motorbike wheels. Remember, if the wheel bearing has a problem, it should be replaced immediately because it can make the motorbike unstable and dangerous at high speeds. The price of wheel bearings is also relatively cheap, only around Rp. 20-30 thousand depending on the type of motorbike. (SB05) (https://www.saibumi.com) More About XZBRG: Xinzhou Bearing Industrial Inc. is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball, Needle, and Roller types (Inch and Metric Sizes) made from Ceramic (Si3N4/ZrO2), Stainless (440c/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level. We work…
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