Metric Standard

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

FILTERS

ID

2 mm(30)
OD

4 mm(1)

5 mm(12)

6 mm(12)

7 mm(5)
Width

1.5 mm(2)

2 mm(3)

2.3 mm(6)

2.5 mm(12)

3 mm(7)
Static Load

112 N(1)

130 N(6)

144 N(6)

253 N(6)

281 N(6)

295 N(3)

328 N(2)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
SMR72zz	440C Stainless Steel	2 mm	7 mm	3 mm	Shielded	295 N	93 N	58.5
MR72 2rs	52100 Chrome Steel	2 mm	7 mm	3 mm	Sealed	328 N	103 N	63
SMR72 2rs	440C Stainless Steel	2 mm	7 mm	3 mm	Sealed	295 N	93 N	56.7
MR72	52100 Chrome Steel	2 mm	7 mm	2.5 mm	Open	328 N	103 N	63
SMR72	440C Stainless Steel	2 mm	7 mm	2.5 mm	Open	295 N	93 N	56.7
MR62zz	52100 Chrome Steel	2 mm	6 mm	2.5 mm	Shielded	281 N	79 N	75
SMR62zz	440C Stainless Steel	2 mm	6 mm	2.5 mm	Shielded	253 N	71 N	67.5
MR62 2rs	52100 Chrome Steel	2 mm	6 mm	2.5 mm	Sealed	281 N	79 N	75
SMR62 2rs	440C Stainless Steel	2 mm	6 mm	2.5 mm	Sealed	253 N	71 N	67.5
MR62	52100 Chrome Steel	2 mm	6 mm	2.5 mm	Open	281 N	79 N	75
SMR62	440C Stainless Steel	2 mm	6 mm	2.5 mm	Open	253 N	71 N	67.5
MR52zz	52100 Chrome Steel	2 mm	5 mm	2.5 mm	Shielded	144 N	40 N	85
SMR52zz	440C Stainless Steel	2 mm	5 mm	2.5 mm	Shielded	130 N	36 N	76.5
MR52 2rs	52100 Chrome Steel	2 mm	5 mm	2.5 mm	Sealed	144 N	40 N	85
SMR52 2rs	440C Stainless Steel	2 mm	5 mm	2.5 mm	Sealed	130 N	36 N	76.5
MR52	52100 Chrome Steel	2 mm	5 mm	2 mm	Open	144 N	40 N	85
SMR52	440C Stainless Steel	2 mm	5 mm	2 mm	Open	130 N	36 N	76.5
692zz	52100 Chrome Steel	2 mm	6 mm	3 mm	Shielded	281 N	79 N	75
S692zz	440C Stainless Steel	2 mm	6 mm	3 mm	Shielded	253 N	71 N	67.5
692 2rs	52100 Chrome Steel	2 mm	6 mm	3 mm	Sealed	281 N	79 N	75
S692 2rs	440C Stainless Steel	2 mm	6 mm	3 mm	Sealed	253 N	71 N	67.5
692	52100 Chrome Steel	2 mm	6 mm	2.3 mm	Open	281 N	79 N	75
S692	440C Stainless Steel	2 mm	6 mm	2.3 mm	Open	253 N	71 N	67.5
682zz	52100 Chrome Steel	2 mm	5 mm	2.3 mm	Shielded	144 N	40 N	85
S682zz	440C Stainless Steel	2 mm	5 mm	2.3 mm	Shielded	130 N	36 N	76.5
682 2rs	52100 Chrome Steel	2 mm	5 mm	2.3 mm	Sealed	144 N	40 N	85
S682 2rs	440C Stainless Steel	2 mm	5 mm	2.3 mm	Sealed	130 N	36 N	76.5
682	52100 Chrome Steel	2 mm	5 mm	1.5 mm	Open	144 N	40 N	85
S682	440C Stainless Steel	2 mm	5 mm	1.5 mm	Open	130 N	36 N	76.5
S672zz	440C Stainless Steel	2 mm	4 mm	2 mm	Shielded	112 N	36 N	98

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