| Bearing number |
691 |
| Size (mm) |
1x4x1.6 |
| Bore Diameter (mm) |
1 |
| Outer Diameter (mm) |
4 |
| Width (mm) |
1,6 |
| d |
1 mm |
| D |
4 mm |
| B |
1,6 mm |
| C |
1,6 mm |
| r min. |
0,1 mm |
| da min. |
1,8 mm |
| Da max. |
3,2 mm |
| ra max. |
0,1 mm |
| Weight |
0,0001 Kg |
| Basic dynamic load rating (C) |
0,14 kN |
| Basic static load rating (C0) |
0,04 kN |
| (Grease) Lubrication Speed |
120000 r/min |
| (Oil) Lubrication Speed |
140000 r/min |
| Bearing No. |
691 |
| r(min) |
0.1 |
| Cr |
0.170 |
| C0r |
0.04 |
| Cu |
0.001 |
| f0 |
11.4 |
| Grease lub. |
120000 |
| Oil lub. |
140000 |
| da(min) |
1.8 |
| Da(max) |
3.2 |
| ra(max) |
0.1 |
| (Refer.)Mass(g) |
0.1 |