NTN, a 100-year-old Japanese bearing manufacturer, is renowned for its precision and reliability. The NTN Japan 6903 LLB (17x30x7mm) steel bearing stands out as one of the best in its class. With years of proven performance in cycling, the non-contact LLB seal design offers the perfect balance of smoothness and durability. While NTN bearing is not the cheapest option, it is a worthwhile investment, delivering long-lasting performance and reducing the need for frequent replacements.

All NTN 6903 LLB steel bearings are stocked in our Australian warehouse and directly imported from a tier-one official NTN distributor in Japan.

NTN Japan 6903 LLB | Non-Contact Low Friction Seal | 17x30x7mm Steel Bearing

$30.00

Brand

Chrome steel bearing races.

Steel bearing balls.

Made in Japan (EAN/JAN: 4547359006605)

Non-contact seals (LLB): reduce friction and enhance efficiency, allowing for improved speed and control in cycling.

LLB vs LLU Seal: The LLB seal is a non-contact type seal used in NTN bearings. It features very low torque and excellent dust-proofing. Its high-speed capacity is comparable to open-type seals, delivering minimal friction in wheel hubs. A light, waterproof grease is applied to enhance its waterproofing capabilities, making it ideal for cycling.

On the other hand, the LLU seal is a contact type, which results in medium torque during bearing rotation. While it offers good dust and waterproofing features, its performance is limited by the contact nature of the seals. LLU seals are typically used in industrial applications where the working environment is more demanding.

For smooth, low-friction, high-performance cycling on both road and gravel, the LLB seal is the ideal option.

Bike Bearing Store

Australia

NTN Japan 6903 LLB | Non-Contact Low Friction Seal | 17x30x7mm Steel Bearing

NTN Steel Bearing Specifications