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

0.6 mm (0.0236 in)(2)

1 mm (0.0394 in)(6)

1.2 mm (0.0472 in)(4)

1.5 mm (0.0591 in)(8)

2 mm (0.0787 in)(3)

9 mm (0.3543 in)(7)
OD

17 mm (0.6693 in)(1)

2.5 mm (0.0984 in)(2)

20 mm (0.7874 in)(6)

3 mm (0.1181 in)(4)

4 mm (0.1575 in)(10)

6 mm (0.2362 in)(4)

7 mm (0.2756 in)(3)
Width

1 mm (0.0394 in)(4)

1.2 mm (0.0472 in)(2)

1.5 mm (0.0591 in)(2)

1.6 mm (0.0630 in)(2)

1.8 mm (0.0709 in)(2)

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)(3)

5 mm (0.1969 in)(1)

6 mm (0.2362 in)(6)
Static Load

101 N(2)

1015 N(1)

108 N(1)

112 N(2)

120 N(1)

1887 N(3)

2097 N(3)

253 N(2)

281 N(2)

295 N(1)

328 N(2)

53 N(1)

59 N(1)

74 N(1)

82 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)
S689zz	440C Stainless Steel	9 mm (0.3543 in)	17 mm (0.6693 in)	5 mm (0.1969 in)	Shielded	1015 N	481 N	32.4
699	52100 Chrome Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Open	2097 N	865 N	34
S699	440C Stainless Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Open	1887 N	778 N	30.6
699 2rs	52100 Chrome Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Sealed	2097 N	865 N	34
S699 2rs	440C Stainless Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Sealed	1887 N	778 N	30.6
699zz	52100 Chrome Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Shielded	2097 N	865 N	34
S699zz	440C Stainless Steel	9 mm (0.3543 in)	20 mm (0.7874 in)	6 mm (0.2362 in)	Shielded	1887 N	778 N	30.6
68/0.6	52100 Chrome Steel	0.6 mm (0.0236 in)	2.5 mm (0.0984 in)	1 mm (0.0394 in)	Open	59 N	14 N	128
SMR41x	440C Stainless Steel	1.2 mm (0.0472 in)	4 mm (0.1575 in)	1.8 mm (0.0709 in)	Open	101 N	30 N	130
MR41x	52100 Chrome Steel	1.2 mm (0.0472 in)	4 mm (0.1575 in)	1.8 mm (0.0709 in)	Open	112 N	33 N	105
SMR31	440C Stainless Steel	1 mm (0.0394 in)	3 mm (0.1181 in)	1.5 mm (0.0591 in)	Open	86 N	22 N	117
MR31	52100 Chrome Steel	1 mm (0.0394 in)	3 mm (0.1181 in)	1.5 mm (0.0591 in)	Open	96 N	25 N	117
S691	440C Stainless Steel	1 mm (0.0394 in)	4 mm (0.1575 in)	1.6 mm (0.0630 in)	Open	108 N	27 N	90
691	52100 Chrome Steel	1 mm (0.0394 in)	4 mm (0.1575 in)	1.6 mm (0.0630 in)	Open	120 N	30 N	100
S681	440C Stainless Steel	1 mm (0.0394 in)	3 mm (0.1181 in)	1 mm (0.0394 in)	Open	74 N	19 N	117
681	52100 Chrome Steel	1 mm (0.0394 in)	3 mm (0.1181 in)	1 mm (0.0394 in)	Open	82 N	21 N	130
S68/0.6	440C Stainless Steel	0.6 mm (0.0236 in)	2.5 mm (0.0984 in)	1 mm (0.0394 in)	Open	53 N	13 N	128
S681xzz	440C Stainless Steel	1.5 mm (0.0591 in)	4 mm (0.1575 in)	2 mm (0.0787 in)	Shielded	86 N	23 N	90
681xzz	52100 Chrome Steel	1.5 mm (0.0591 in)	4 mm (0.1575 in)	2 mm (0.0787 in)	Shielded	95 N	26 N	100
S681x	440C Stainless Steel	1.5 mm (0.0591 in)	4 mm (0.1575 in)	1.2 mm (0.0472 in)	Open	86 N	23 N	90
681x	52100 Chrome Steel	1.5 mm (0.0591 in)	4 mm (0.1575 in)	1.2 mm (0.0472 in)	Open	95 N	26 N	100
S601xzz	440C Stainless Steel	1.5 mm (0.0591 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Shielded	253 N	71 N	67.5
601xzz	52100 Chrome Steel	1.5 mm (0.0591 in)	6 mm (0.2362 in)	3 mm (0.1181 in)	Shielded	281 N	79 N	75
S601x	440C Stainless Steel	1.5 mm (0.0591 in)	6 mm (0.2362 in)	2.5 mm (0.0984 in)	Open	253 N	71 N	67.5
601x	52100 Chrome Steel	1.5 mm (0.0591 in)	6 mm (0.2362 in)	2.5 mm (0.0984 in)	Open	281 N	79 N	75
SMR41xzz	440C Stainless Steel	1.2 mm (0.0472 in)	4 mm (0.1575 in)	2.5 mm (0.0984 in)	Shielded	101 N	30 N	105
MR41xzz	52100 Chrome Steel	1.2 mm (0.0472 in)	4 mm (0.1575 in)	2.5 mm (0.0984 in)	Shielded	112 N	33 N	105
602zz	52100 Chrome Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Shielded	328 N	103 N	60
S602zz	440C Stainless Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Shielded	295 N	93 N	54
602 2rs	52100 Chrome Steel	2 mm (0.0787 in)	7 mm (0.2756 in)	3.5 mm (0.1378 in)	Sealed	328 N	103 N	60

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