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

1.5 mm (0.0591 in)(4)

2 mm (0.0787 in)(26)
OD

4 mm (0.1575 in)(4)

5 mm (0.1969 in)(14)

6 mm (0.2362 in)(7)

7 mm (0.2756 in)(5)
Width

1.2 mm (0.0472 in)(2)

1.5 mm (0.0591 in)(2)

2 mm (0.0787 in)(6)

2.3 mm (0.0906 in)(6)

2.5 mm (0.0984 in)(5)

2.6 mm (0.1024 in)(2)

2.8 mm (0.1102 in)(2)

3 mm (0.1181 in)(4)

3.5 mm (0.1378 in)(1)
Static Load

112 N(2)

124 N(2)

130 N(7)

144 N(7)

253 N(3)

281 N(4)

295 N(3)

328 N(2)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
S602 2rs	440C Stainless Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Sealed	295 N	93 N	54
602	52100 Chrome Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	2.8 mm (0.1102 in)	Open	328 N	103 N	60
S602	440C Stainless Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	2.8 mm (0.1102 in)	Open	295 N	93 N	54
S691xzz	440C Stainless Steel	1.5 mm (0.0591 in)	5 mm (0.1969 in)	2.6 mm (0.1024 in)	Shielded	130 N	36 N	76.5
691xzz	52100 Chrome Steel	1.5 mm (0.0591 in)	5 mm (0.1969 in)	2.6 mm (0.1024 in)	Shielded	144 N	40 N	85
S691x	440C Stainless Steel	1.5 mm (0.0591 in)	5 mm (0.1969 in)	2 mm (0.0787 in)	Open	130 N	36 N	76.5
691x	52100 Chrome Steel	1.5 mm (0.0591 in)	5 mm (0.1969 in)	2 mm (0.0787 in)	Open	144 N	40 N	85
682zz	52100 Chrome Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.3 mm (0.0906 in)	Shielded	144 N	40 N	85
S682zz	440C Stainless Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.3 mm (0.0906 in)	Shielded	130 N	36 N	76.5
682 2rs	52100 Chrome Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.3 mm (0.0906 in)	Sealed	144 N	40 N	85
S682 2rs	440C Stainless Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.3 mm (0.0906 in)	Sealed	130 N	36 N	76.5
682	52100 Chrome Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	1.5 mm (0.0591 in)	Open	144 N	40 N	85
S682	440C Stainless Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	1.5 mm (0.0591 in)	Open	130 N	36 N	76.5
S672zz	440C Stainless Steel	2 mm (0.0787 in)	4 mm (0.1575 in)	2 mm (0.0787 in)	Shielded	112 N	36 N	98
672zz	52100 Chrome Steel	2 mm (0.0787 in)	4 mm (0.1575 in)	2 mm (0.0787 in)	Shielded	124 N	40 N	98
S672	440C Stainless Steel	2 mm (0.0787 in)	4 mm (0.1575 in)	1.2 mm (0.0472 in)	Open	112 N	36 N	98
672	52100 Chrome Steel	2 mm (0.0787 in)	4 mm (0.1575 in)	1.2 mm (0.0472 in)	Open	124 N	40 N	98
S692	440C Stainless Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	2.3 mm (0.0906 in)	Open	253 N	71 N	67.5
MR52 2rs	52100 Chrome Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.5 mm (0.0984 in)	Sealed	144 N	40 N	85
SMR52 2rs	440C Stainless Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2.5 mm (0.0984 in)	Sealed	130 N	36 N	76.5
MR52	52100 Chrome Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2 mm (0.0787 in)	Open	144 N	40 N	85
SMR52	440C Stainless Steel	2 mm (0.0787 in)	5 mm (0.1969 in)	2 mm (0.0787 in)	Open	130 N	36 N	76.5
692zz	52100 Chrome Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Shielded	281 N	79 N	75
S692zz	440C Stainless Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Shielded	253 N	71 N	67.5
692 2rs	52100 Chrome Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Sealed	281 N	79 N	75
S692 2rs	440C Stainless Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Sealed	253 N	71 N	67.5
692	52100 Chrome Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	2.3 mm (0.0906 in)	Open	281 N	79 N	75
MR72	52100 Chrome Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Open	328 N	103 N	63
SMR72	440C Stainless Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	2.5 mm (0.0984 in)	Open	295 N	93 N	56.7
MR62zz	52100 Chrome Steel	2 mm (0.0787 in)	6 mm (0.2362 in)	2.5 mm (0.0984 in)	Shielded	281 N	79 N	75

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