Description: Machine tool main spindle bearing
Basic Dimensions(mm) |
Bearing Designations |
Precision Rating |
basic load rating(KN) |
Limiting Speed (r/min) |
Weight (KGS) |
||||
d |
D |
B |
Cr |
Cor |
Grease |
oil |
|
||
45 |
58 |
7 |
B71809-E-TPA-P4, B71809ETPAP4, B71809 |
P4 |
6.8 |
6.4 |
19000 |
32000 |
0.04 |
Product Model | Inside Diameter | Outside Diameter | Thickness |
NN3008K NTN | 40 | 68 | 21 |
NN3007K NTN | 35 | 62 | 20 |