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 mm(5)

1.2 mm(4)

1.5 mm(12)

2 mm(9)
OD

3 mm(3)

4 mm(13)

5 mm(4)

6 mm(4)

7 mm(6)
Width

1 mm(1)

1.2 mm(4)

1.5 mm(2)

1.6 mm(2)

1.8 mm(2)

2 mm(5)

2.5 mm(4)

2.6 mm(2)

2.8 mm(2)

3 mm(2)

3.5 mm(4)
Static Load

101 N(2)

108 N(1)

112 N(3)

120 N(1)

124 N(2)

130 N(2)

144 N(2)

253 N(2)

281 N(2)

295 N(3)

328 N(3)

74 N(1)

86 N(3)

95 N(2)

96 N(1)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
672zz	52100 Chrome Steel	2 mm	4 mm	2 mm	Shielded	124 N	40 N	98
S672	440C Stainless Steel	2 mm	4 mm	1.2 mm	Open	112 N	36 N	98
672	52100 Chrome Steel	2 mm	4 mm	1.2 mm	Open	124 N	40 N	98
602zz	52100 Chrome Steel	2 mm	7 mm	3.5 mm	Shielded	328 N	103 N	60
S602zz	440C Stainless Steel	2 mm	7 mm	3.5 mm	Shielded	295 N	93 N	54
602 2rs	52100 Chrome Steel	2 mm	7 mm	3.5 mm	Sealed	328 N	103 N	60
S602 2rs	440C Stainless Steel	2 mm	7 mm	3.5 mm	Sealed	295 N	93 N	54
602	52100 Chrome Steel	2 mm	7 mm	2.8 mm	Open	328 N	103 N	60
S602	440C Stainless Steel	2 mm	7 mm	2.8 mm	Open	295 N	93 N	54
S691xzz	440C Stainless Steel	1.5 mm	5 mm	2.6 mm	Shielded	130 N	36 N	76.5
691xzz	52100 Chrome Steel	1.5 mm	5 mm	2.6 mm	Shielded	144 N	40 N	85
S691x	440C Stainless Steel	1.5 mm	5 mm	2 mm	Open	130 N	36 N	76.5
691x	52100 Chrome Steel	1.5 mm	5 mm	2 mm	Open	144 N	40 N	85
S681xzz	440C Stainless Steel	1.5 mm	4 mm	2 mm	Shielded	86 N	23 N	90
681xzz	52100 Chrome Steel	1.5 mm	4 mm	2 mm	Shielded	95 N	26 N	100
S681x	440C Stainless Steel	1.5 mm	4 mm	1.2 mm	Open	86 N	23 N	90
681x	52100 Chrome Steel	1.5 mm	4 mm	1.2 mm	Open	95 N	26 N	100
S601xzz	440C Stainless Steel	1.5 mm	6 mm	3 mm	Shielded	253 N	71 N	67.5
601xzz	52100 Chrome Steel	1.5 mm	6 mm	3 mm	Shielded	281 N	79 N	75
S601x	440C Stainless Steel	1.5 mm	6 mm	2.5 mm	Open	253 N	71 N	67.5
601x	52100 Chrome Steel	1.5 mm	6 mm	2.5 mm	Open	281 N	79 N	75
SMR41xzz	440C Stainless Steel	1.2 mm	4 mm	2.5 mm	Shielded	101 N	30 N	105
MR41xzz	52100 Chrome Steel	1.2 mm	4 mm	2.5 mm	Shielded	112 N	33 N	105
SMR41x	440C Stainless Steel	1.2 mm	4 mm	1.8 mm	Open	101 N	30 N	130
MR41x	52100 Chrome Steel	1.2 mm	4 mm	1.8 mm	Open	112 N	33 N	105
SMR31	440C Stainless Steel	1 mm	3 mm	1.5 mm	Open	86 N	22 N	117
MR31	52100 Chrome Steel	1 mm	3 mm	1.5 mm	Open	96 N	25 N	117
S691	440C Stainless Steel	1 mm	4 mm	1.6 mm	Open	108 N	27 N	90
691	52100 Chrome Steel	1 mm	4 mm	1.6 mm	Open	120 N	30 N	100
S681	440C Stainless Steel	1 mm	3 mm	1 mm	Open	74 N	19 N	117

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