681 Micro Precision Miniature Bearings:
ID (inner diameter)/Bore: 1mm
OD (outer diameter): 3mm
Width/Height/thickness: 1mm
Size: 1 x 3 x 1 mm
Dynamic load rating Cr: 100 N
Static load rating Cor: 30 N
Limiting Speed:
Grease Lubrication: 130,000 RPM
Oil Lubrication: 150,000 RPM
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We Can Produce Other Precision Miniature Bearings :
| Bearing | Bore | Outer | Width | Chamfer | Dynamic | Static | Limite | Weight |
| No. | d | D | B | R | load(KN) | load(KN) | Speed r/min | kg |
| 681 | 1 | 3 | 1 | 0.07 | 0.1 | 0.03 | 130000 | 0.0001 |
| 1 | 3 | 1 | 0.07 | 0.1 | 0.03 | 130000 | 0.0001 | |
| 681X | 1.5 | 4 | 1.2 | 0.07 | 0.1 | 0.03 | 130000 | 0.00014 |
| 1.5 | 4 | 2 | 0.07 | 0.1 | 0.03 | 130000 | 0.00014 | |
| 682 | 2 | 5 | 1.5 | 0.1 | 0.17 | 0.05 | 980000 | 0.00015 |
| 2 | 5 | 2.3 | 0.1 | 0.17 | 0.05 | 980000 | 0.0002 | |
| 683 | 3 | 7 | 2 | 0.1 | 0.3 | 0.12 | 45000 | 0.0003 |
| 3 | 7 | 3 | 0.1 | 0.3 | 0.12 | 45000 | 0.00045 | |
| 684 | 4 | 9 | 2.5 | 0.1 | 0.5 | 0.22 | 39000 | 0.0006 |
| 4 | 9 | 4 | 0.1 | 0.5 | 0.22 | 39000 | 0.0009 | |
| 685 | 5 | 11 | 3 | 0.15 | 0.6 | 0.28 | 35000 | 0.001 |
| 5 | 11 | 5 | 0.15 | 0.6 | 0.28 | 35000 | 0.0016 | |
| 686 | 6 | 13 | 3.5 | 0.15 | 0.83 | 0.39 | 33000 | 0.0018 |
| 6 | 13 | 5 | 0.15 | 0.83 | 0.39 | 35000 | 0.0025 | |
| 687 | 7 | 14 | 3.5 | 0.15 | 0.9 | 0.44 | 31000 | 0.002 |
| 7 | 14 | 5 | 0.15 | 0.9 | 0.44 | 31000 | 0.0028 | |
| 688 | 8 | 16 | 4 | 0.2 | 1.23 | 0.63 | 29000 | 0.0032 |
| 8 | 16 | 5 | 0.2 | 1.23 | 0.63 | 29000 | 0.004 |
For miniature bearings ,we can produce with your requirements ,welcome with your enquriy .
For Material :
440 stainless steel for inner ring and outer ring
304 stainless steel cage
440 stainless steel balls
Lubrication:Dry lube/ Grease/ Oil
Clousure type :Rubber seals/ ZZ metal shields
Feature:
High speed,Long spin time,Low friction,Rustproof and corrosion resistance
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