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Bicycle Bearings

Properly selected bike bearings are essential for the reliable and efficient operation of any bicycle. High-quality bike bearings ensure smooth operation of hubs, bottom brackets, headset assemblies, and other moving parts, reduce friction, and extend the service life of components.

Our product range includes a wide selection of bearings for road bikes, mountain bikes, gravel bikes, trekking bikes, and e-bikes. We offer industrial ball bearings in various sizes and specifications suitable for repairs, maintenance, and professional bike building.

 

Where are bicycle bearings used?

Bearings are among the most heavily stressed components of a bicycle. You’ll find them primarily in:

  • wheel hubs,
  • bottom brackets,
  • head sets,
  • derailleur pulleys,
  • rear suspension pivots on full-suspension bikes,
  • pedals, and other rotating components.

Regular inspection and timely replacement of worn bearings help maintain maximum bike performance and prevent more costly repairs.

 

How to choose the right bearings for your bike?

When selecting bearings, it is important to know the exact designation or dimensions of the original bearing. You will most often encounter industrial bearings with 2RS (rubber seal) or ZZ (metal seal) protection. Sealed bearings are particularly popular for cycling use, as they better resist water, mud, and dust.

If you are unsure about the correct choice, we recommend checking the markings on your current bearing or contacting our technical support.

 

High-quality bearings for long service life

We offer only proven bicycle bearings that meet high standards for precision, durability, and long service life. Thanks to their high-quality construction and reliable seals, they are suitable for both recreational and competitive use in demanding conditions.

Choose bicycle bearings for your bike and treat your machine to smooth operation, lower resistance, and maximum reliability on every ride.

Translated with DeepL.com (free version)

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Type
Bore diameter
Od: 12 mm
Do: 30 mm
Min: 12 mm
Max: 30 mm
Outside diameter
Od: 21 mm
Do: 42 mm
Min: 21 mm
Max: 42 mm
Width
Od: 5 mm
Do: 9 mm
Min: 5 mm
Max: 9 mm
Sealing
Bore type
Radial internal clearance
Minimum operating temperature
Maximum operating temperature
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Bicycle Bearings
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Displaying: 1 - 12 of 18 products
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6801 LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 12x21x5 mm, TOP quality NTN
Code: 10672534
Availability: In stock (20 pcs) Delivery Date: 11.06.2026
132,00
159,72 Kč incl. VAT
6901 LLB/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 12x24x6 mm, TOP quality NTN
Code: 10074496
Availability: In stock (19 pcs) Delivery Date: 11.06.2026
132,00
159,72 Kč incl. VAT
6901 LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 12x24x6 mm, TOP quality NTN
Code: 10672617
Availability: In stock (40 pcs) Delivery Date: 11.06.2026
132,00
159,72 Kč incl. VAT
6902 LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 15x28x7 mm, TOP quality NTN
Code: 10672620
Availability: In stock (30 pcs) Delivery Date: 11.06.2026
144,00
174,24 Kč incl. VAT
6802 LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 15x24x5 mm, TOP quality NTN
Code: 10672537
Availability: In stock (44 pcs) Delivery Date: 11.06.2026
144,00
174,24 Kč incl. VAT
6902 LLB/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 15x28x7 mm, TOP quality NTN
Code: 10075784
Availability: In stock (15 pcs) Delivery Date: 11.06.2026
144,00
174,24 Kč incl. VAT
6903 JRX LLB/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 17x30x7 mm, TOP quality NTN
Code: 10075791
Availability: In stock (18 pcs) Delivery Date: 11.06.2026
146,00
176,66 Kč incl. VAT
6903 JRX LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 17x30x7 mm, TOP quality NTN
Code: 10074957
Availability: In stock (5 pcs) Delivery Date: 11.06.2026
148,00
179,08 Kč incl. VAT
6903 JRX LLU C3/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 17x30x7 mm, TOP quality NTN
Code: 10075685
Availability: In stock (8 pcs) Delivery Date: 11.06.2026
148,00
179,08 Kč incl. VAT
6803 LLU/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 17x26x5 mm, TOP quality NTN
Code: 10672540
Availability: In stock (20 pcs) Delivery Date: 11.06.2026
156,00
188,76 Kč incl. VAT
6803 LLB/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 17x26x5 mm, TOP quality NTN
Code: 10075625
Availability: In stock (10 pcs) Delivery Date: 11.06.2026
162,00
196,02 Kč incl. VAT
6904 LLB/5K NTN deep groove ball bearing
single row deep groove ball bearing, seals on both sides, dimensions 20x37x9 mm, TOP quality NTN
Code: 10074707
Availability: In stock (21 pcs) Delivery Date: 11.06.2026
176,00
212,96 Kč incl. VAT