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Bicycle Bearing K4052H8-45/45-2RS 40.0x52.0x8.0 mm

Item number: K4052H8-45/45-2RS

The headset bearing Fahrradlager K4052H8-45/45-2RS 40.0x52.0x8.0 mm is a double-sided sealed angular contact ball bearing with an internal angle of 45°. The high-quality manufacturing ensures safe mounting and smooth and precise steering. Thanks to the rubber lip seals (2RS) on both sides, the bearing has a high sealing effect against moisture and bad weather conditions. It is pre-greased.

Category: Axial Angular Ball Bearings for Bicycles

Shipping time: Available

From pcsPrice per unit
422,61 €
1021,90 €
5021,42 €
20020,47 €
50019,52 €
23,80 €

including 19% VAT., plus shipping charge


Technical ScribbleZoomable

Technical Data

Inside Ø (mm):40.0
Outside Ø (mm):52.0
Width (mm):8.0
Temperature Resistance:-40° to +180° C
Ring Material:Rolling bearing steel
Rolling Element Material:Rolling bearing steel
Cage Material:Plastic
Lubrication:Kyodo Raremax Super N
Number of balls:30
Oblique angle alpha:45°
Oblique angle beta:45°
Outer Ø of the balls:3.175
Product weight: 0,0350 kg


  • Suitable for high radial and axial loads in both directions
  • Seal: rubber lip seals (2RS) on both sides for a high sealing effect
  • If you need this bearing in RS design with only one seal and one open side, you can simply remove one of the two seals: to the instructions
  • Cage material: PA66 nylon, more resilient than sheet steel and therefore more durable
The K4 headset bearings are available with different angles, please pay attention to the information when making your selection. You can also find this on the already installed headset bearing.

Further Information



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