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

4 mm (0.1575 in)(30)
OD

10 mm (0.3937 in)(2)

11 mm (0.4331 in)(6)

12 mm (0.4724 in)(4)

13 mm (0.5118 in)(1)

16 mm (0.6299 in)(6)

7 mm (0.2756 in)(5)

9 mm (0.3543 in)(6)
Width

2 mm (0.0787 in)(2)

2.5 mm (0.0984 in)(5)

3 mm (0.1181 in)(2)

4 mm (0.1575 in)(14)

5 mm (0.1969 in)(7)
Static Load

1025 N(3)

1139 N(3)

195 N(1)

217 N(2)

238 N(1)

264 N(1)

490 N(3)

544 N(1)

545 N(3)

604 N(1)

733 N(5)

814 N(5)

995 N(1)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
S604zz	440C Stainless Steel	4 mm (0.1575 in)	12 mm (0.4724 in)	4 mm (0.1575 in)	Shielded	733 N	252 N	43.2
604zz	52100 Chrome Steel	4 mm (0.1575 in)	12 mm (0.4724 in)	4 mm (0.1575 in)	Shielded	814 N	280 N	48
S604 2rs	440C Stainless Steel	4 mm (0.1575 in)	12 mm (0.4724 in)	4 mm (0.1575 in)	Sealed	733 N	252 N	43.2
604 2rs	52100 Chrome Steel	4 mm (0.1575 in)	12 mm (0.4724 in)	4 mm (0.1575 in)	Sealed	814 N	280 N	48
S624zz	440C Stainless Steel	4 mm (0.1575 in)	13 mm (0.5118 in)	5 mm (0.1969 in)	Shielded	995 N	351 N	36
S684 2rs	440C Stainless Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	4 mm (0.1575 in)	Sealed	490 N	164 N	47.7
684	52100 Chrome Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	2.5 mm (0.0984 in)	Open	545 N	182 N	53
S684	440C Stainless Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	2.5 mm (0.0984 in)	Open	490 N	164 N	47.7
S634zz	440C Stainless Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Shielded	1025 N	376 N	32.4
634zz	52100 Chrome Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Shielded	1139 N	418 N	36
S634 2rs	440C Stainless Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Sealed	1025 N	376 N	32.4
634 2rs	52100 Chrome Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Sealed	1139 N	418 N	36
S634	440C Stainless Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Open	1025 N	376 N	32.4
634	52100 Chrome Steel	4 mm (0.1575 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Open	1139 N	418 N	36
SMR104	440C Stainless Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	3 mm (0.1181 in)	Open	544 N	196 N	43.2
S694zz	440C Stainless Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Shielded	733 N	252 N	43.2
694zz	52100 Chrome Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Shielded	814 N	280 N	48
694 2rs	52100 Chrome Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Sealed	814 N	280 N	48
S694 2rs	440C Stainless Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Sealed	733 N	252 N	43.2
694	52100 Chrome Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Open	814 N	280 N	48
S694	440C Stainless Steel	4 mm (0.1575 in)	11 mm (0.4331 in)	4 mm (0.1575 in)	Open	733 N	252 N	43.2
684zz	52100 Chrome Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	4 mm (0.1575 in)	Shielded	545 N	182 N	53
S684zz	440C Stainless Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	4 mm (0.1575 in)	Shielded	490 N	164 N	47.7
684 2rs	52100 Chrome Steel	4 mm (0.1575 in)	9 mm (0.3543 in)	4 mm (0.1575 in)	Sealed	545 N	182 N	53
MR104	52100 Chrome Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	3 mm (0.1181 in)	Open	604 N	218 N	48
MR74zz	52100 Chrome Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Shielded	217 N	86 N	60
SMR74 2rs	440C Stainless Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Sealed	195 N	77 N	54
MR74 2rs	52100 Chrome Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Sealed	217 N	86 N	60
MR74	52100 Chrome Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2 mm (0.0787 in)	Open	264 N	92 N	60
SMR74	440C Stainless Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2 mm (0.0787 in)	Open	238 N	83 N	54

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