- Inner diameter: 24 mm
- Width: 20 mm
- Sealing (bearing): Without seals
Needle roller bearings for high radial load in tight space
A needle roller bearing uses long, thin rollers to carry heavy radial load in the smallest possible radial section, which is why it turns up in gearboxes, planetary sets, rocker arms, universal joints and anywhere a housing bore leaves almost no room around the shaft. The main decision is whether the bearing carries its own inner ring.
Versions without one run straight on a hardened and ground shaft, saving a few more millimetres of height but demanding a raceway finish the shaft must actually hold. Versions with an inner ring are more forgiving, so they suit softer shafts and repair work where regrinding is not an option. Sealed variants keep grease in and swarf out on dirty machinery.
Sizing follows bore, outside diameter and width, while cage material and lubrication method decide the speed limit. Needle bearings take almost no axial load, so pair one with a thrust washer or an angular contact ball bearing where the shaft is loaded both ways. The wider radial bearing range covers the alternatives when space allows.
- Inner diameter: 30 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 35 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 50 mm
- Width: 23 mm
- Sealing (bearing): Sealed on both sides
- Inner diameter: 60 mm
- Width: 25 mm
- Sealing (bearing): Without seals
- Inner diameter: 25 mm
- Width: 17 mm
- Sealing (bearing): Without seals
- Inner diameter: 42 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 55 mm
- Width: 35 mm
- Sealing (bearing): Without seals
- Inner diameter: 15 mm
- Width: 14 mm
- Sealing (bearing): Sealed on both sides
- Inner diameter: 35 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 20 mm
- Width: 13 mm
- Sealing (bearing): Sealed on both sides
- Inner diameter: 90 mm
- Width: 25 mm
- Sealing (bearing): Without seals
- Inner diameter: 35 mm
- Width: 30 mm
- Sealing (bearing): Without seals
- Inner diameter: 15 mm
- Width: 16 mm
- Sealing (bearing): Without seals
- Inner diameter: 9 mm
- Width: 16 mm
- Sealing (bearing): Without seals
- Inner diameter: 20 mm
- Width: 16 mm
- Sealing (bearing): Without seals
- Inner diameter: 17 mm
- Width: 13 mm
- Sealing (bearing): Without seals
- Inner diameter: 42 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 45 mm
- Width: 20 mm
- Sealing (bearing): Without seals
- Inner diameter: 12 mm
- Width: 20 mm
- Sealing (bearing): Without seals