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

2.5 mm (0.0984 in)(6)

3 mm (0.1181 in)(24)
OD

10 mm (0.3937 in)(6)

13 mm (0.5118 in)(6)

7 mm (0.2756 in)(5)

8 mm (0.3150 in)(8)

9 mm (0.3543 in)(5)
Width

2 mm (0.0787 in)(2)

2.5 mm (0.0984 in)(4)

3 mm (0.1181 in)(2)

3.5 mm (0.1378 in)(2)

4 mm (0.1575 in)(10)

5 mm (0.1969 in)(10)
Static Load

1106 N(3)

207 N(2)

230 N(3)

238 N(2)

264 N(1)

295 N(1)

328 N(1)

427 N(4)

474 N(4)

482 N(3)

536 N(3)

995 N(3)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
MR82x 2rs	52100 Chrome Steel	2.5 mm (0.0984 in)	8 mm (0.3150 in)	2.5 mm (0.0984 in)	Sealed	474 N	144 N	60
SMR82x 2rs	440C Stainless Steel	2.5 mm (0.0984 in)	8 mm (0.3150 in)	2.5 mm (0.0984 in)	Sealed	427 N	130 N	54
MR82x	52100 Chrome Steel	2.5 mm (0.0984 in)	8 mm (0.3150 in)	2.5 mm (0.0984 in)	Open	474 N	144 N	60
SMR82x	440C Stainless Steel	2.5 mm (0.0984 in)	8 mm (0.3150 in)	2.5 mm (0.0984 in)	Open	427 N	130 N	54
692xzz	52100 Chrome Steel	2.5 mm (0.0984 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Shielded	328 N	103 N	63
S692xzz	440C Stainless Steel	2.5 mm (0.0984 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Shielded	295 N	93 N	56.7
S623zz	440C Stainless Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Shielded	482 N	158 N	45
623 2rs	52100 Chrome Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Sealed	536 N	175 N	50
S623 2rs	440C Stainless Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Sealed	482 N	158 N	45
623	52100 Chrome Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Open	536 N	175 N	50
S623	440C Stainless Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Open	482 N	158 N	45
603zz	52100 Chrome Steel	3 mm (0.1181 in)	9 mm (0.3543 in)	5 mm (0.1969 in)	Shielded	230 N	151 N	56
S603zz	440C Stainless Steel	3 mm (0.1181 in)	9 mm (0.3543 in)	5 mm (0.1969 in)	Shielded	207 N	136 N	50.4
603 2rs	52100 Chrome Steel	3 mm (0.1181 in)	9 mm (0.3543 in)	5 mm (0.1969 in)	Sealed	230 N	151 N	56
S603 2rs	440C Stainless Steel	3 mm (0.1181 in)	9 mm (0.3543 in)	5 mm (0.1969 in)	Sealed	207 N	136 N	50.4
603	52100 Chrome Steel	3 mm (0.1181 in)	9 mm (0.3543 in)	3 mm (0.1181 in)	Open	230 N	151 N	56
S683 2rs	440C Stainless Steel	3 mm (0.1181 in)	7 mm (0.2756 in)	3 mm (0.1181 in)	Sealed	238 N	81 N	56.7
683	52100 Chrome Steel	3 mm (0.1181 in)	7 mm (0.2756 in)	2 mm (0.0787 in)	Open	264 N	90 N	63
S683	440C Stainless Steel	3 mm (0.1181 in)	7 mm (0.2756 in)	2 mm (0.0787 in)	Open	238 N	81 N	56.7
633zz	52100 Chrome Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Shielded	1106 N	390 N	40
S633zz	440C Stainless Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Shielded	995 N	351 N	36
633 2rs	52100 Chrome Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Sealed	1106 N	390 N	40
S633 2rs	440C Stainless Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Sealed	995 N	351 N	36
633	52100 Chrome Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Open	1106 N	390 N	40
S633	440C Stainless Steel	3 mm (0.1181 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Open	995 N	351 N	36
623zz	52100 Chrome Steel	3 mm (0.1181 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Shielded	536 N	175 N	50
693zz	52100 Chrome Steel	3 mm (0.1181 in)	8 mm (0.3150 in)	4 mm (0.1575 in)	Shielded	474 N	144 N	60
S693zz	440C Stainless Steel	3 mm (0.1181 in)	8 mm (0.3150 in)	4 mm (0.1575 in)	Shielded	427 N	130 N	54
693 2rs	52100 Chrome Steel	3 mm (0.1181 in)	8 mm (0.3150 in)	4 mm (0.1575 in)	Sealed	474 N	144 N	60
S693 2rs	440C Stainless Steel	3 mm (0.1181 in)	8 mm (0.3150 in)	4 mm (0.1575 in)	Sealed	427 N	130 N	54

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