Spherical Roller Bearings

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