Inch 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

0.04"(2)

0.04688"(4)

0.05556"(4)

0.07813"(6)

0.09375"(11)

0.125"(1)

0.15625"(2)
OD

0.125"(2)

0.15625"(4)

0.1875"(9)

0.25"(6)

0.3125"(8)

0.375"(1)
Width

0.0469"(2)

0.0625"(4)

0.0781"(2)

0.0937"(7)

0.1094"(6)

0.1406"(8)

0.1562"(1)
Static Load

106 lbf(3)

109 lbf(1)

18 lbf(1)

19 lbf(2)

20 lbf(1)

21 lbf(2)

25 lbf(1)

28 lbf(2)

32 lbf(1)

36 lbf(1)

40 lbf(2)

44 lbf(2)

49 lbf(3)

54 lbf(3)

62 lbf(1)

69 lbf(1)

95 lbf(3)

Part Number	Ring Material	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Limited Speed(x1K rpm)
R133zz	52100 Chrome Steel	0.09375"	0.1875"	0.0937"	Shielded	28 lbf	10 lbf	80
SR133 2rs	440C Stainless Steel	0.09375"	0.1875"	0.0937"	Sealed	25 lbf	9 lbf	72
R133 2rs	52100 Chrome Steel	0.09375"	0.1875"	0.0937"	Sealed	28 lbf	10 lbf	80
SR133	440C Stainless Steel	0.09375"	0.1875"	0.0625"	Open	32 lbf	10 lbf	72
R133	52100 Chrome Steel	0.09375"	0.1875"	0.0625"	Open	36 lbf	11 lbf	80
SR1-5zz	440C Stainless Steel	0.09375"	0.3125"	0.1406"	Shielded	95 lbf	29 lbf	54
R1-5zz	52100 Chrome Steel	0.09375"	0.3125"	0.1406"	Shielded	106 lbf	32 lbf	60
SR1-5 2rs	440C Stainless Steel	0.09375"	0.3125"	0.1406"	Sealed	95 lbf	29 lbf	54
R1-5 2rs	52100 Chrome Steel	0.09375"	0.3125"	0.1406"	Sealed	106 lbf	32 lbf	60
SR1-5	440C Stainless Steel	0.09375"	0.3125"	0.1094"	Open	95 lbf	29 lbf	54
R1-5	52100 Chrome Steel	0.09375"	0.3125"	0.1094"	Open	106 lbf	32 lbf	60
SR1-4zz	440C Stainless Steel	0.07813"	0.25"	0.1406"	Shielded	49 lbf	15 lbf	60.3
R1-4zz	52100 Chrome Steel	0.07813"	0.25"	0.1406"	Shielded	54 lbf	17 lbf	67
SR1-4 2rs	440C Stainless Steel	0.07813"	0.25"	0.1406"	Sealed	49 lbf	15 lbf	60.3
R1-4 2rs	52100 Chrome Steel	0.07813"	0.25"	0.1406"	Sealed	54 lbf	17 lbf	67
SR1-4	440C Stainless Steel	0.07813"	0.25"	0.0937"	Open	49 lbf	15 lbf	60.3
R1-4	52100 Chrome Steel	0.07813"	0.25"	0.0937"	Open	54 lbf	17 lbf	67
SR1zz	440C Stainless Steel	0.05556"	0.1875"	0.1094"	Shielded	40 lbf	11 lbf	81
R1zz	52100 Chrome Steel	0.05556"	0.1875"	0.1094"	Shielded	44 lbf	12 lbf	90
SR1	440C Stainless Steel	0.05556"	0.1875"	0.0781"	Open	40 lbf	11 lbf	81
R1	52100 Chrome Steel	0.05556"	0.1875"	0.0781"	Open	44 lbf	12 lbf	90
SR0zz	440C Stainless Steel	0.04688"	0.15625"	0.0937"	Shielded	19 lbf	5 lbf	99
R0zz	52100 Chrome Steel	0.04688"	0.15625"	0.0937"	Shielded	21 lbf	6 lbf	110
SR0	440C Stainless Steel	0.04688"	0.15625"	0.0625"	Open	19 lbf	5 lbf	99
R0	52100 Chrome Steel	0.04688"	0.15625"	0.0625"	Open	21 lbf	6 lbf	110
SR09	440C Stainless Steel	0.04"	0.125"	0.0469"	Open	18 lbf	4 lbf	117
R09	52100 Chrome Steel	0.04"	0.125"	0.0469"	Open	20 lbf	5 lbf	130
SR2zz	440C Stainless Steel	0.125"	0.375"	0.1562"	Shielded	109 lbf	35 lbf	50.4
R155	52100 Chrome Steel	0.15625"	0.3125"	0.1094"	Open	69 lbf	27 lbf	53
SR155	440C Stainless Steel	0.15625"	0.3125"	0.1094"	Open	62 lbf	24 lbf	47.7

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