Design Features
- Available in NN type with inner ring ribs and NNU type with outer ring ribs
- Low vibration APTSURF specification achieves higher accuracy of roller, raceway and dimensional surface geometries
- Optimized internal design delivers higher dynamic capacity and longer bearing life
- Equipped with machined brass cage as standard
- PPS engineered resin cage for NN30 types supports higher limiting speeds with high rigidity, low heat generation and reduced wear
- Low heat generation NN30-Z types available specifically for high-speed, free-end bearing applications
- NN types equipped with outer ring lubrication groove and holes
- With cylindrical and tapered bores
- Radial internal clearances CC1 for cylindrical bore, CC0 for tapered bore
- With P2, P4 and P4Y accuracy
- For dimension series 30, 39 and 49
- For shaft diameters ranging from 40 to 260 mm
Operating Benefits
- Low rotational vibration with 55% reduction in RMS (root mean square) vibration values
- Higher load capacity with an optimized internal design yielding 15% higher dynamic capacity compared to conventional designs
- Longer operating life - as much as 60% - derived from higher load ratings
Fields of Application including
- Machine Tools
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