Enduro Bearings Stainless Angular Contact Headset Bearing

The Enduro Bearings ACB 3645 SS Angular Contact Headset Bearing is a premium stainless steel headset bearing designed for long-lasting performance, smooth steering, and superior corrosion resistance. Built with 440C stainless steel balls and races, it is a strong replacement option for compatible 1-1/8" internal headset systems.
Designed with angular contact construction, dual-lip LLB seals, and high-pressure waterproof grease, this bearing helps protect against sweat, water, dirt, and daily riding conditions. With a 30.2 x 41 x 6.5 mm size and 36° x 45° contact angle, it is ideal for headset servicing and precision bicycle maintenance.
FEATURES
Angular Contact Design: Designed to spread load across all bearing balls for smoother steering performance and longer bearing life.
440C Stainless Steel: Stainless steel balls and races provide strong corrosion resistance for wet, humid, and demanding riding conditions.
Headset Bearing Application: Built for compatible 1-1/8" internal headset systems and bicycle steering assemblies.
LLB Dual-Lip Seals: Dual-lip seals ride in a micro-groove labyrinth to help protect against water, sweat, dirt, and contamination.
Waterproof Grease Fill: Filled with high-pressure waterproof grease to improve protection and support long service life.
Durable Bearing Construction: Engineered with large bearing balls and quality races for strength, smoothness, and reliability.
Sweat and Weather Protection: Suitable for riding conditions where moisture, sweat, and spilled sports drinks can affect bearing life.
Precision Fit Size: 30.2 x 41 x 6.5 mm size with 36° x 45° angle supports accurate replacement for compatible headsets.
Known Industry Fitments: Also known by part numbers 27287-1046-004, HSS0130K, TH-873E, and MR-122.
Service Ready Upgrade: Ideal for replacing worn headset bearings and restoring smooth, reliable steering feel.
SPECIFICATIONS
Bearing Code: ACB 3645 SS
Barcode: 810191013457
Size Standard: 1-1/8 inch
Bearing Type: Angular contact headset bearing
Material: 440C stainless steel balls and races
Dimensions: 30.2 x 41 x 6.5 mm
Contact Angle: 36° x 45°
Seal Type: LLB dual-lip labyrinth seals
Grease: Almagard 3752 high-pressure waterproof grease
Static Load: 935 lbf / 4.15 kN
Weight: 19.24 g
