Spherical Roller Bearings
This unit compensates for shaft bending and absorbs misalignment defects. These accept high radial loads and axial loads in both directions.Available with tapered or cylindrical bores. Tapered bores are delivered with adapter or withdrawal sleeves.
NTN-SNR High Performance Range
Series: 21300 / 22200 – 22300 / 23000 – 23100 – 23200 – 23800 – 23900 / 24000 – 24100 – 24800 – 24900
- High performance standard. Optimal quality steel, geometry and optimised surface conditions. Maximum dynamic load capacity. Service life of the bearings (X2)
- Increased speed limits
- Reduced energy consumption
- Reduced dimensions for identical performance
- Allow to extend intervals between maintenance actions, reduced environnemental impact
NTN Range
- Large dimensions range D>650 mm: suffix B (NTN)
- Type B. Asymmetric rollers. Reduced vibrations and low operating temperatures
Lubrication
To improve lubrication, bearing is supplied with a groove and lubrication holes in the outer ring. Series 21300: without holes or grooves in standard. With holes or grooves on request.
Vibrating Applications
- Designations: EF800 (SNR) ULTAGE
- Solid brass cage, reduced diameter tolerances and special clearance
- Designed to absorb higher accelerations than standard bearings
- Anti-fretting corrosion treatment on the inner ring (MX- prefix option)
Special Bearings
- Bearings with case hardened inner ring (NTN range); for printing or paper machines
- Bearings for high temperature operation (>200°C)
- Railway, steel, mining and quarry applications
- Split bearing
- Bearings with solid lubrication (maintenance-free)
Suffixes
| Description | Suffixes |
|---|---|
| Category 2 ISO radial clearance | C2 |
| Category 3 ISO radial clearance | C3 |
| Category 4 ISO radial clearance | C4 |
| Category 5 ISO radial clearance | C5 |
| Tapered bore 1/12 | K |
| Tapered bore 1/30 | K30 |
| Groove and relubrication holes on the outer ring | W33 |
Cage Variants
| Cage Materials | Description | Temperature |
|---|---|---|
| Steel sheet EA by SNR, – by NTN | Standard applications | Up to +200°C |
| Solid steel (F1) and brass L1 by NTN, M by SNR |
Severe applications | Up to +200°C |
| Fibre glass reinforced polyamide T2X by NTN, G15 by SNR |
Standard applications | Up to +150°C |
Bearing Number Examples
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