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Miniature Bearings / Micro Bearings / Small Bearings
Inch series for shaft sizes from 0.04" to 1.00"
Chrome steel and stainless steel

Our inch series small bearings, miniature bearings or micro bearings are available open, shielded or sealed.with bore sizes as small as 0.04 inches. The smaller sizes are sometimes referred to as instrument bearings or micro bearings. Inch series small bearings, miniature bearings and micro bearings can be supplied in SAE52100 chrome steel and AISI440C or KS440 (ACD34/X65Cr13) stainless steel and like most deep groove radial ball bearings can withstand heavy radial loads and moderate thrust loads in both directions. Most inch series miniature bearings can be supplied flanged and many are available with extended inner ring and some with both flange and extended inner ring.

Many of these miniature bearings can be supplied to order with ceramic balls (hybrid bearings). Most sizes are available in stainless steel or passivated stainless steel for more corrosive environments (see Technical Data - Bearing Material).

    
 


Bore

O.D.
r.min.
(mm) 		Open Bearing Shielded Bearing Sealed Bearing Max Load kgf


RPM
(x1000)
Width SMB Ref. Width SMB Ref. Width SMB Ref. Dyn Stat

Dimensions in inches except radius                                            
Max loads: actual loads should be well below figures shown for acceptable bearing life (see Technical)
Max RPM: will be reduced for certain lubricants, closures, loads etc (see Technical)

0.04 0.125 0.1 0.0469 R09         10 3 130
 
0.0469 0.1562 0.1 0.0625 R0 0.0937 R0ZZ     11 4 110
 
0.055 0.1875 0.1 0.0781 R1 0.1094 R1ZZ     22 8 95
 
0.0781 0.25 0.1 0.0937 R1-4 0.1406 R1-4ZZ     27 9 80
 

0.0937		 0.1875 0.1 0.0625 R133 0.0937 R133ZZ     17 6 92
0.25 0.1     0.0937 R143ZZW09     14 4 92
0.3125 0.15 0.1094 R1-5 0.1406 R1-5ZZ     53 17 66
 






0.125		 0.25 0.1     0.0937 R144ZZW09     27 9 75
0.25 0.1 0.0937 R144 0.1094 R144ZZ     27 9 75
0.3125 0.1     0.1094 R2-5ZZW10     53 17 67
0.3125 0.1 0.1094 R2-5 0.1406 R2-5ZZ 0.1406 R2-5-2RS 53 17 67
0.375 0.15     0.1094 R2-6ZZW10     60 21 74
0.375 0.15 0.1094 R2-6 0.1406 R2-6ZZ 0.1406 R2-6-2RS 60 21 63
0.375 0.3 0.1562 R2 0.1562 R2ZZ 0.1562 R2-2RS 60 21 63
0.41 0.15 0.937 R174 0.1094 R174ZW10     60 21 63
0.5 0.15 0.1094 R184 0.1094 R184ZZ     27 9 68
0.5 0.3 0.1719 R2A 0.1719 R2AZZ 0.1719 R2A-2RS 60 21 63
 
0.1562 0.3125 0.1 0.1094 R155 0.125 R155ZZ     35 13 62
 






0.1875		 0.3125 0.1 0.1094 R156 0.125 R156ZZ 0.125 R156-2RS 35 13 62
0.375 0.1 0.125 R166 0.125 R166ZZ 0.125 R166-2RS 68 27 59
0.5 0.15 0.1094 R3W10 0.1094 R3ZW10     68 27 59
0.5 0.15     0.125 R3ZZW12     68 27 59
0.5 0.3     0.1562 R3ZZW15 0.1562 R3-2RSW15 125 49 50
0.5 0.3 0.1562 R3 0.196 R3ZZ 0.196 R3-2RS 125 49 50
0.625 0.3 0.196 R3A 0.196 R3AZZ 0.196 R3A-2RS 142 59 46
0.6875 0.3 0.25 1601 0.25 1601ZZ     130 59 42
0.6875 0.3         0.3125 1601-2RS 130 59 42
 




0.25		 0.375 0.1 0.125 R168 0.125 R168ZZ 0.125 R168-2RS 36 17 57
0.5 0.15     0.125 R188ZW12     106 43 51
0.5 0.15 0.125 R188 0.1875 R188ZZ 0.1875 R188-2RS 106 43 51
0.625 0.3 0.196 R4 0.196 R4ZZ 0.196 R4-2RS 142 59 44
0.6875 0.3 0.25 1602 0.25 1602ZZ     130 59 42
0.6875 0.3         0.3125 1602-2RS 130 59 42
0.75 0.4 0.2188 R4A 0.2812 R4AZZ 0.2812 R4A-2RS 227 86 41
 



0.3125		 0.5 0.15 0.1562 R1810 0.1562 R1810ZZ     53 26 48
0.625 0.15 0.1562 R1810A 0.1562 R1810AZZ     53 26 48
0.875 0.3 0.3438 1603 0.3438 1603ZZ     227 102 39
0.9062 0.3         0.3125 1603-2RS 227 102 39
1.125 0.3 0.375 1605 0.375 1605ZZ 0.375 1605-2RS 227 102 39
 




0.375		 0.625 0.25 0.1562 R1038 0.1562 R1038ZZ     85 42 33
0.75 0.25 0.196 R1238 0.196 R1238ZZ     175 86 42
0.875 0.4 0.2188 R6 0.2812 R6ZZ 0.2812 R6-2RS 328 141 37
0.875 0.4         0.3438 1604-2RS 227 102 36
0.9062 0.4 0.3125 1606 0.3125 1606ZZ 0.3125 1606-2RS 227 102 36
1.125 0.6 0.375 1614 0.375 1614ZZ 0.375 1614-2RS 205 102 27
 
0.4375 0.9062 0.6 0.3125 1607 0.3125 1607ZZ 0.3125 1607-2RS 205 102 34
 



0.5		 0.75 0.25 0.1562 R1212 0.1562 R1212ZZ     91 52 27
0.75 0.25     0.196 R1212ZZW19     91 52 27
0.875 0.25 0.196 R1412 0.196 R1412ZZ     192 101 39
0.875 0.25 0.2188 R6-1/2 0.2812 R6ZZ-1/2 0.2812 R6-2RS1/2 192 101 39
1.125 0.4 0.25 R8 0.3125 R8ZZ 0.3125 R8-2RS 511 237 28
1.125 0.6 0.375 1616 0.375 1616ZZ 0.375 1616-2RS 205 102 30
1.375 0.6 0.4375 1621 0.4375 1621ZZ 0.4375 1621-2RS 270 158 23
 
0.5625 1.375 0.6 0.4375 1622 0.4375 1622ZZ 0.4375 1622-2RS 270 158 23
 
0.625 0.875 0.25 0.1562 R1458 0.1562 R1458ZZ     92 59 24
1.375 0.8 0.2812 R10 0.3438 R10ZZ 0.3438 R10-2RS 590 312 24
1.375 0.8 0.4375 1623 0.4375 1623ZZ 0.4375 1623-2RS 270 158 23
1.625 0.8 0.5 1628 0.5 1628ZZ 0.5 1628-2RS 330 202 20
 
0.75 1.0 0.25 0.1562 R1634 0.1562 R1634ZZ     98 63 20
1.625 0.8 0.3125 R12 0.4375 R12ZZ 0.4375 R12-2RS 785 442 20
 
0.875 1.875 0.8 0.375 R14 0.50 R14ZZ 0.50 R14-2RS 1080 576 18
 
1.0 2.0 0.8 0.375 R16 0.50 R16ZZ 0.50 R16-2RS 1150 700 16

 

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