HB-B4 - HEADSET BEARING 1"1/8 MEASURE 30,15 x 39 x 6,5 - 45/45°

Key featuresHigh-precision 1 1/8" headset bearing45/45° angle for standard fitCompact 39 mm outer diameter design2RS seals for water and dust protectionSmooth rotation and long lifespan DescriptionThe CCY-1004 (HB-B4) bearing is designed for 1 1/8" headset systems and is ideal for applications requiring a 39 mm outer diameter.Its precise dimensions (30.15 x 39 x 6.5 mm) and 45/45° contact angle ensure proper fit and stable steering performance. Made from high-quality steel with precision-ground raceways and premium lubrication, it delivers smooth operation and long-lasting durability.  SpecificationsType: headset bearingStandard: 1 1/8"Dimensions: 30.15 x 39 x 6.5 mmAngle: 45° / 45°Seals: 2RS (double sealed)Material: high-strength steelBearing grade: ABEC 5Lubrication: premium grease CompatibilityCompatible with 1 1/8" headset systemsFor frames with 39 mm bearing seatSuitable for integrated and semi-integrated headsetsCross references: MH-P04, TH-870GIdeal replacement bearing