Headset bearings

We designed our headset bearings for smooth operation and maximum durability. Whether you are looking for bearings for race bikes, mountain bikes, or BMX bikes, you will find the perfect bearings for your Bicycle at CEMA Bearing.

Headset Bearing - 38 x 27,1 x 6,5 x 36°/45°

14.80 €

Headset Bearing - 38 x 27,1 x 6,5 x 45/45

14.80 €

Headset Bearing - 39 x 30,1 x 6,5 x 45/45

14.80 €

Headset Bearing - 41 x 30,1 x 6,5 x 36/45

17.70 €

Headset Bearing - 41 x 30,5 x 7,7 x 45°/45°

17.70 €

Headset Bearing - 41,8 x 30,1 x 6,5 x 45/45

17.70 €

Headset Bearing - 41,8 x 30,5 x 7,7 x 45°/45°

17.70 €

Headset Bearing - 41,8 x 30,5 x 8 x 45/45

17.70 €

Headset Bearing - 41,8 x 32,7 x 6 x 45°/45°

17.70 €

Headset Bearing - 46,9 x 34,1 x 7 x 45/45

20.90 €

Headset Bearing - 47 x 35 x 8 x 45°/45°

20.90 €

Headset Bearing - 51,8 x 40 x 8 x 36°/45°

20.90 €

Headset Bearing - 51,8 x 40 x 8 x 45/45

20.90 €

Headset Bearing - 52 x 40 x 7 x 36°/45°

20.90 €

Headset Bearing - 52 x 40 x 7 x 45/45

20.90 €

Headset bearing - 41 X 30,1 X 6,5 - 45°/45°

17.70 €

Inner Diameter

The inner diameter is the opening in the centre of the bearing through which the axle passes: the hub axle for a wheel bearing, the crank spindle for a bottom bracket bearing and the steerer tube for a headset bearing. Measure the opening in the centre of the bearing and choose the matching size.

27.1 mm

30.1 mm

30.5 mm

32.7 mm

34.1 mm

35 mm

40 mm

Outer Diameter

The outer diameter is the overall size of the bearing, measured from outside to outside of the outer bearing ring. This size determines how the bearing fits into its housing: the hub, the bottom bracket shell or the head tube. Measure the outer ring of the bearing and choose the matching size.

38 mm

39 mm

41 mm

41.8 mm

46.9 mm

47 mm

51.8 mm

52 mm

Width

The thickness is the width of the bearing. Measure the distance between the two flat sides of the bearing and choose the matching size.

6 mm

7 mm

8 mm

6.5 mm

7.7 mm

Angulation

The angulation (bearing angle) of a headset bearing refers to the angle at which a bearing ring is ground, and to the angles at which the bearing makes contact with the crown race or compression ring on the steerer tube (inner ring of the bearing) and with the frame (outer ring of the bearing). Use the same angulation as the bearing you are replacing.
The values at a glance:
36/45 — an angle of 36° on the inner ring of the bearing and an angle of 45° on the outer ring of the bearing.
45/45 — an angle of 45° on both the inner and outer ring of the bearing.

36/45

45/45

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Welcome to CEMA Bearing, the right place for high-quality bicycle bearings. Our bearings are made with the latest technologies and materials to give your bike the best performance and durability. Whether you are looking for bottom brackets, derailleur pulleys or wheel bearings, we offer a wide range of bearings for all kinds of bikes. Order today and feel the difference our bearings make to your ride.