Tapered Roller Bearings
These accept high radial loads and axial loads in one direction. They are generally fitted opposite a bearing of the same type. Load capacity depends on contact angle.
NTN Bower Range
Sheet, solid or reinforced polyamide cage depending on the series and dimensions.
Steel
- Through hardened bearing steel
- Vacuum degassed case hardened steel (4T, ET) and special heat treatment for a longer service life (ETA / ECO)
Cage
- Generally equipped with a steel sheet cage
- Solid or steel pin-type cages for large bearings
- Fibre glass reinforced polyamide cage possible depending on the application for smaller bearings
Small Torque Specification
- Bearing identified with the suffix -ST:
- Reduced drag torque
- Reduced heating
- Improved seizure resistance
- Simplified adjustments at assembly
Eco-Top Range:
For Challenging Applications
- Life time: +180% compared to through hardened steel
- Optimised design, enhanced service life, more compact
- bearing and reduced energy consumption
1 Row
- Metric dimensions: ISO 355 and JIS B 1512 standards
- Available with contact angles, spread from 10° to 31°,including 2 series of large contact angle (T7FC and 303xx D)
- Inch dimensions:ABMA standard (including J metric series)
- Can be equipped with flanges
2 Rows
- Appears in the same form as two single-row bearings
- Fitted face-to-face or back-to-back, with metric or inch dimensions
- One-piece outer or inner rings
- Single-row assemblies with spacers also exist
4 Rows
- Composed of two double cones, two single flanges and one double flange
- Extended service life, thanks to the use of case hardened steel, hollow rollers and pin-type cages
- Very high load capacities, adapted to rolling type applications
- – Available in sealed version (-LL) and ULTAGE range
Bearing Number Example
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