- New
Description
B 541 SS – 1 in. stainless steel headset bearing with a Torque-Tube radial design. Dimensions: 1-1/16 × 1-1/2 × 9/32 in.
This radial bearing for internal headsets uses 440C stainless steel balls and races to provide high corrosion resistance. Torque-Tube bearings have an inner race that is slightly wider than the outer race.
440C stainless steel
Enduro uses only 440C stainless steel balls and races to provide long service life and high corrosion resistance in less-than-ideal applications and environments. Of the standard 440-series stainless steel alloys, 440C has the highest strength, hardness, and wear resistance, owing to its high carbon content. It is also the most expensive 440-series alloy and requires several rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties.
Stainless steel bearings have 20% less load capacity and are slightly softer than the standard 52100 chromium steel used in most Enduro bearings. However, stainless steel is an excellent alternative for wet conditions, frequent bike washing, or applications where sweat may be a problem. Enduro Bearings also uses LLB-type seals and CRC Marine grease in these bearings to provide additional waterproofing against the elements. Enduro 440C stainless steel headset bearings are used in products from many popular headset brands, including those carrying a 110-year warranty.
Enduro angular-contact bearings
Enduro's line of angular-contact headset bearings starts with black-oxide-treated chromium steel races, steps up to full 440C stainless steel, and tops out with the lifetime-guaranteed XD-15 aerospace stainless steel bearing, with both races and balls made from this material. The bearings are engineered with the largest balls possible. They feature dual-lip seals that run 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 so that all balls are evenly engaged, spreading force over a larger surface area, decreasing friction, minimizing wear, and maximizing service life.
- Static load: 880 lbf / 3.91 kN
- Weight: 19.92 g