Headset bearing Enduro Bearings ACB 6808 CC stainless steel 1-1/2"

ACB 6808 CC SS – 1-1/2 in angular-contact headset bearing with 440C stainless steel balls and races (40 mm × 52 mm × 6.5 mm; 36 × 45°).

The 440C stainless steel balls and races provide enhanced corrosion protection.

Compatible codes

In the bicycle industry, this bearing size is also known by the following codes:

• HD 1404K
• BAA0006K
• MR-127
• MR-196
• MH-P25K
• BAA1132
• TH MR019

Materials and construction

Enduro uses 440C stainless steel balls and races to provide long service life and corrosion resistance, including in less-than-ideal conditions. Due to its high carbon content, 440C has the highest strength, hardness and wear resistance of the standard 440-series stainless steel alloys. It is also the most expensive alloy in the series; special heat treatment and cryogenic treatment are required to achieve its mechanical properties. Although it is slightly softer than the standard 52100 chromium steel used in most Enduro bearings, stainless steel is an excellent alternative for wet conditions or where the bearing may be exposed to sweat or spilled sports drinks.

Enduro also uses LLB-type seals and Almagard 3752 grease in these bearings to provide additional protection from the elements. Enduro 440C stainless steel headset bearings are used in many popular headset brands and come with a lifetime warranty.

The Enduro range of angular-contact headset bearings uses black-oxide-treated chromium steel races, with the top option made entirely from 440C stainless steel. The bearings are engineered to use the largest balls possible. They feature dual-lip seals running in a micro-groove (labyrinth) and are filled to 90% with high-pressure waterproof grease for protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed to keep all balls evenly engaged, distributing force over a larger surface area to minimize wear and maximize service life.

Technical specifications

• Static load: 917 lbf / 408 kN
• Weight: 24.9 g