C.A.T Cylindrical Bearing Inner Race 3D-1101 3D1101 Heavy Duty Transmission

Precision-Matched Cone & Micro-Lapped Tapered Rollers: Precision-engineered as the exact mating inner cone for the 3D-1100 bearing cup. Features micro-lapped tapered rollers and a rigid inner raceway that delivers uniform contact stress distribution and friction-free rotation under heavy axial thrust and radial loads. 

Carburized Bearing Alloy Steel & High Impact Resistance: Manufactured from high-purity carburized alloy steel with deep case-hardening. Combines an ultra-hard exterior raceway (HRC 60+) with a high-ductility core to resist fatigue spalling, shock loading, and intense chassis vibration. 

Designed for High-Tonnage Drive Axles & Differentials: Tailored for heavy-duty drive axles, differential carrier supports, and planetary reduction units on high-tonnage wheel loaders and graders. Maintains rigid shaft alignment and precise preload stability.