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)(11)

5 mm (0.1969 in)(19)
OD

10 mm (0.3937 in)(4)

11 mm (0.4331 in)(4)

14 mm (0.5512 in)(6)

16 mm (0.6299 in)(6)

19 mm (0.7480 in)(3)

7 mm (0.2756 in)(1)

8 mm (0.3150 in)(6)
Width

2 mm (0.0787 in)(2)

2.5 mm (0.0984 in)(1)

3 mm (0.1181 in)(6)

4 mm (0.1575 in)(4)

5 mm (0.1969 in)(14)

6 mm (0.2362 in)(3)
Static Load

1017 N(3)

1130 N(3)

1323 N(3)

1470 N(3)

1787 N(1)

195 N(1)

1986 N(2)

302 N(3)

336 N(3)

544 N(2)

548 N(2)

604 N(2)

609 N(2)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
MR104zz	52100 Chrome Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Shielded	604 N	218 N	48
SMR104zz	440C Stainless Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Shielded	544 N	196 N	43.2
SMR104 2rs	440C Stainless Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Sealed	544 N	196 N	43.2
MR104 2rs	52100 Chrome Steel	4 mm (0.1575 in)	10 mm (0.3937 in)	4 mm (0.1575 in)	Sealed	604 N	218 N	48
605 2rs	52100 Chrome Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Sealed	1130 N	406 N	40
S605	440C Stainless Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Open	1017 N	365 N	36
605	52100 Chrome Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Open	1130 N	406 N	40
MR84zz	52100 Chrome Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	3 mm (0.1181 in)	Shielded	336 N	113 N	56
SMR84zz	440C Stainless Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	3 mm (0.1181 in)	Shielded	302 N	102 N	50.4
SMR84 2rs	440C Stainless Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	3 mm (0.1181 in)	Sealed	302 N	102 N	50.4
MR84 2rs	52100 Chrome Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	3 mm (0.1181 in)	Sealed	336 N	113 N	56
MR84	52100 Chrome Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	2 mm (0.0787 in)	Open	336 N	113 N	56
SMR84	440C Stainless Steel	4 mm (0.1575 in)	8 mm (0.3150 in)	2 mm (0.0787 in)	Open	302 N	102 N	50.4
SMR74zz	440C Stainless Steel	4 mm (0.1575 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Shielded	195 N	77 N	54
S625zz	440C Stainless Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Shielded	1323 N	486 N	32.4
625zz	52100 Chrome Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Shielded	1470 N	540 N	36
S625 2rs	440C Stainless Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Sealed	1323 N	486 N	32.4
S625	440C Stainless Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Open	1323 N	486 N	32.4
625 2rs	52100 Chrome Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Sealed	1470 N	540 N	36
625	52100 Chrome Steel	5 mm (0.1969 in)	16 mm (0.6299 in)	5 mm (0.1969 in)	Open	1470 N	540 N	36
S605zz	440C Stainless Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Shielded	1017 N	365 N	36
605zz	52100 Chrome Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Shielded	1130 N	406 N	40
S605 2rs	440C Stainless Steel	5 mm (0.1969 in)	14 mm (0.5512 in)	5 mm (0.1969 in)	Sealed	1017 N	365 N	36
635	52100 Chrome Steel	5 mm (0.1969 in)	19 mm (0.7480 in)	6 mm (0.2362 in)	Open	1986 N	717 N	32
S685 2rs	440C Stainless Steel	5 mm (0.1969 in)	11 mm (0.4331 in)	5 mm (0.1969 in)	Sealed	548 N	203 N	40.5
685 2rs	52100 Chrome Steel	5 mm (0.1969 in)	11 mm (0.4331 in)	5 mm (0.1969 in)	Sealed	609 N	226 N	45
S685	440C Stainless Steel	5 mm (0.1969 in)	11 mm (0.4331 in)	3 mm (0.1181 in)	Open	548 N	203 N	40.5
685	52100 Chrome Steel	5 mm (0.1969 in)	11 mm (0.4331 in)	3 mm (0.1181 in)	Open	609 N	226 N	45
635zz	52100 Chrome Steel	5 mm (0.1969 in)	19 mm (0.7480 in)	6 mm (0.2362 in)	Shielded	1986 N	717 N	32
S635zz	440C Stainless Steel	5 mm (0.1969 in)	19 mm (0.7480 in)	6 mm (0.2362 in)	Shielded	1787 N	645 N	28.8

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