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

3 mm(13)

4 mm(17)
OD

12 mm(6)

13 mm(6)

16 mm(5)

6 mm(1)

8 mm(6)

9 mm(6)
Width

2.5 mm(5)

3 mm(4)

4 mm(10)

5 mm(11)
Static Load

1025 N(2)

1106 N(3)

1139 N(3)

178 N(1)

302 N(3)

336 N(3)

436 N(3)

485 N(3)

733 N(3)

814 N(3)

995 N(3)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
634zz	52100 Chrome Steel	4 mm	16 mm	5 mm	Shielded	1139 N	418 N	36
S634 2rs	440C Stainless Steel	4 mm	16 mm	5 mm	Sealed	1025 N	376 N	32.4
634 2rs	52100 Chrome Steel	4 mm	16 mm	5 mm	Sealed	1139 N	418 N	36
S634	440C Stainless Steel	4 mm	16 mm	5 mm	Open	1025 N	376 N	32.4
634	52100 Chrome Steel	4 mm	16 mm	5 mm	Open	1139 N	418 N	36
S624zz	440C Stainless Steel	4 mm	13 mm	5 mm	Shielded	995 N	351 N	36
624zz	52100 Chrome Steel	4 mm	13 mm	5 mm	Shielded	1106 N	390 N	40
S624 2rs	440C Stainless Steel	4 mm	13 mm	5 mm	Sealed	995 N	351 N	36
624 2rs	52100 Chrome Steel	4 mm	13 mm	5 mm	Sealed	1106 N	390 N	40
S624	440C Stainless Steel	4 mm	13 mm	5 mm	Open	995 N	351 N	36
624	52100 Chrome Steel	4 mm	13 mm	5 mm	Open	1106 N	390 N	40
S604zz	440C Stainless Steel	4 mm	12 mm	4 mm	Shielded	733 N	252 N	43.2
604zz	52100 Chrome Steel	4 mm	12 mm	4 mm	Shielded	814 N	280 N	48
S604 2rs	440C Stainless Steel	4 mm	12 mm	4 mm	Sealed	733 N	252 N	43.2
604 2rs	52100 Chrome Steel	4 mm	12 mm	4 mm	Sealed	814 N	280 N	48
S604	440C Stainless Steel	4 mm	12 mm	4 mm	Open	733 N	252 N	43.2
604	52100 Chrome Steel	4 mm	12 mm	4 mm	Open	814 N	280 N	48
MR93zz	52100 Chrome Steel	3 mm	9 mm	4 mm	Shielded	485 N	151 N	56
SMR93zz	440C Stainless Steel	3 mm	9 mm	4 mm	Shielded	436 N	136 N	50.4
MR93 2rs	52100 Chrome Steel	3 mm	9 mm	4 mm	Sealed	485 N	151 N	56
SMR93 2rs	440C Stainless Steel	3 mm	9 mm	4 mm	Sealed	436 N	136 N	50.4
MR93	52100 Chrome Steel	3 mm	9 mm	2.5 mm	Open	485 N	151 N	56
SMR93	440C Stainless Steel	3 mm	9 mm	2.5 mm	Open	436 N	136 N	50.4
MR83zz	52100 Chrome Steel	3 mm	8 mm	3 mm	Shielded	336 N	113 N	60
SMR83zz	440C Stainless Steel	3 mm	8 mm	3 mm	Shielded	302 N	102 N	54
MR83 2rs	52100 Chrome Steel	3 mm	8 mm	3 mm	Sealed	336 N	113 N	60
SMR83 2rs	440C Stainless Steel	3 mm	8 mm	3 mm	Sealed	302 N	102 N	54
MR83	52100 Chrome Steel	3 mm	8 mm	2.5 mm	Open	336 N	113 N	60
SMR83	440C Stainless Steel	3 mm	8 mm	2.5 mm	Open	302 N	102 N	54
MR63zz	52100 Chrome Steel	3 mm	6 mm	2.5 mm	Shielded	178 N	59 N	71

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