Bearing Enduro Bearings ACB 6808 Stainless Steel 290413 1-1/2″
€27.66
Tax included
- Product code
- 8101910126346
- Manufacturer
- Enduro Bearings
Description
ACB 6808 SS, 290413 – 1-1/2″ 440C stainless steel angular-contact headset bearing (40 × 51 × 6.5 mm; 36° × 36°).
The bearing uses 440C stainless steel balls and races for increased corrosion protection. Its dimensions differ slightly from those of the other ACB 6808 bearings sold: it has a slightly smaller outside diameter, and its internal and external chamfers are 36°. This bearing was originally specified for Trek Madone and Domane bikes.
Other part numbers for this bearing size
- 290413
- HD 1449
- S417578
- MR-006 S
Materials and construction
Enduro bearings use only 440C stainless steel balls and races to provide long service life and increased corrosion resistance in demanding conditions. Of the standard 440-series stainless steel alloys, 440C has the highest strength, hardness and wear resistance, as well as a high carbon content. It is the most expensive alloy in the 440 series and requires special heat treatment and cryogenic treatment to achieve its mechanical properties. Although it is slightly softer than the standard 52100 chromium steel used in most Enduro bearings, it is a suitable alternative for wet conditions or environments where sweat and spilled sports drinks may be an issue. LLB-type seals and Almagard 3752 grease provide additional protection from the elements. Enduro 440C stainless steel headset bearings are also used in products from many popular headset brands and carry a lifetime warranty.
The Enduro angular-contact headset bearing range uses black-oxide-treated chromium steel races, with 440C stainless steel races in higher-grade models. Bearings are engineered to accommodate the largest possible balls. They feature dual-lip seals that run in a micro-groove (labyrinth), and are filled to 90% with high-pressure waterproof grease to protect against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so that all balls engage evenly, spreading the force over a larger surface area to reduce wear and extend bearing life.
- Static load: 917 lbf / 4.08 kN
- Weight: 23.36 g