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Double Row Cylindrical Roller Bearings for Lathe Main Shaft
Highly rigid Double-Row Cylindrical Roller Bearings for Lathe Main Shaft applications. This is the first-ever precision bearing to adopt an PPS resin cage (designated TB in NSK), whilst maintaining its functionality to deliver high accuracy & high rigidity in ultra high-speed applications.
Condition Description
- High Speed
- High Temperature
Industries
- Automotive
- Machine Tools
Product Features
- High strength, roller guided resin cage (TB).
- Outer ring has standard lubrication hole.
- Low temperature rise due to optimum internal design and cage configuration.
- TB cage allows faster running speeds
Benefits
- TB cage temperature resistance up to 220°C
- TB cage has a lower temperature rise than conventional cages
- Grease life in the TB cage is typically more than 8 times higher than that of conventional & brass cages
- Range includes NNU type which has double rib outer and NN type which features excellent grease discharge during ‘running in’
- The outer ring is available with standardised lubrication hole and groove (E44) specification. This allows easy interchange
NN
30
17
TB
KR
E44
CC0
P4
| Show Description | |
| Description | |
|---|---|
| NN | Bearing type |
| 30 | Dimension series |
| 17 | Bore number |
| Internal design | |
| TB | Cage |
| KR | Tapered bore |
| E44 | Lubrication holes |
| CC0 | Radial clearance |
| P4 | Accuracy |
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