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Cylindrical Roller Bearings

Cylindrical Roller Bearings

These bearings are highly rigid and can absorb high radial forces. Cage versions accept higher speeds than full complement versions. Equipped with separable rings, dismounting and withdrawal are simple, even when tight clearances are necessary.

1 Row with Cage

Standard Range

  • ISO standard: NU, N, NJ, NF, NUP, NH, RNU, HJ
  • Series of bearings: 200, 300, 400, 1800, 1900, 1000, 2900, 2200, 2300, 3800, 3100, 3200, 3300
  • US types (BOWER): M, W

Possible Variants

  • Tapered bore (K)
  • Grooves with (NR) or without a snap ring (N) on the outer diameter to simplify assembly
  • Fully case hardened bearings for types M and W (BOWER)
  • Shoulder rings (HJ-)

Specific Applications

  • MEGAOHM range: bearings with electrical insulation, mainly for applications with electrical motors and generators

2 Rows with Cage

Standard Range: NN and NNU with solid cage

  • Series: 3900, 3000, 3100, 4800, 4900, 4000
  • Type NN and NNU bearings: also available with a tapered bore
  • Types of applications: machine tools (SEE HIGH PRECISION) or heavy industry

2 Rows Full Complement (Type Sl)

Range suitable for high radial loads and/or to meet the need for excellent rigidity

  • Types SL01, SL02 and SL04 can absorb axial forces in both directions, in addition to substantial radial forces

Possible Variants

  • Grooves for snap rings in the outer ring (series SL04) for pulley applications, for example Double sealing (LL)

4 Rows with Cage (Type 4R)

Bearings with solid cage, also available in large dimensions (d. ≤ 1200 mm)

Possible Variants

  • Case hardened or carbo-nitrided steel for improved resistance
  • Lubrication holes

Crossed Roller Bearings (Type Qr)

Suitable for high rotation precision combined with high forces

  • Types of applications: robotics, indexing tables


Description NTN SNR
Increased capacity design E E
Fibre glass reinforced polyamide +120°C (continuous) T2 G15
Fibre glass reinforced polyamide +150°C (continuous) T2X
Massive brass cage roller centered M
Massive brass cage inner or outer ring guided G1
Massive brass cage in two parts, inner or outer ring guided L1
Massive steel cage in two parts, inner or outer ring guided F1
Pressed steel cage J
NUP types : washer bore diameter not grinded U

Bearing Number Example

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