199-4582: Bearing – Needle(Debris Resistant)

Cat 199-4582 is a Caterpillar single-row cylindrical roller bearing (with cage, no inner ring), suitable for drive axles, transmissions, or hydraulic pumps in excavators, loaders, and other construction machinery. It is used to withstand high radial loads and is suitable for low-to-medium speed, impact conditions. The following are the core parameters and application points:

Core Parameters (Precise and Authoritative Version)

Item Details
Basic Information
Model 199-4582, type is single-row cylindrical roller bearing without inner ring (with cage), inner ring-less design suitable for smooth shaft mounting, saving space, double-sided stamped steel dust covers, suitable for Cat 330C/336D/345C/349D excavators, 950M loaders, C9 engine drive systems, etc., used in drive axle differentials, transmission shafts, hydraulic pump drive shaft supports, etc.

Suitable Models
Suitable for Cat 330C/330D/336D/345C/345D/349D This product is commonly used in excavators, 950M/962M loaders, C9/C13 engines, 420F2 backhoe loaders, etc., for drive axle half-shafts, gearbox input shafts, hydraulic motor output shafts, steering knuckle shafts, etc.

Material and Manufacturing Process: The rollers and cage are made of high-carbon chromium bearing steel (100Cr6), with a roller diameter of 4mm. They are integrally quenched (HRC60-64) and ultra-precision ground (Ra≤0.1μm). The cage is made of stamped steel plate, offering high strength and impact resistance. The dust cover is made of cold-rolled steel plate, with an IP54 protection rating, resisting dust and sand intrusion.

Key Dimensions: Inner diameter 50mm (suitable for 50mm shaft diameter, shaft surface hardness HRC58-62, roughness Ra≤0.4μm), outer diameter 72mm, total width 18mm, roller length 16mm, number of rollers 18, chamfer C1.5, weight approximately 0.21kg, radial clearance… 0.012-0.028mm, interference fit with shaft 0.008-0.015mm, rated dynamic load 35kN, rated static load 48kN, limiting speed (grease lubrication) 3200r/min
Compatible Components: Compatible with 50mm diameter smooth shafts; matching seal is TC50×72×8 double-lip skeleton oil seal; recommended use of Cat 10-9275 extreme pressure lithium-based grease; installation coaxiality requirement ≤0.02mm; recommended installation tool is a special socket (model Cat 4C-4852).
Functions, Installation and Maintenance Points:
Core Functions: The inner ring-less design adapts to compact installation spaces; can withstand high radial loads (rated dynamic load 35kN); transmits torque and provides support and positioning; the dust cover reduces impurity intrusion, ensuring efficient component operation; suitable for low-to-medium speed and impact load conditions.

Installation Points: Cold fitting is recommended. Apply clean grease to the shaft surface and press in evenly using a special sleeve. Do not hammer. The flatness of the bearing housing mounting surface should be ≤0.015mm. Bolt torque should be 70-80 N·m, tightening diagonally and evenly to ensure the dust cover fits snugly against the shaft surface without leakage.

Maintenance Points: Check the sealing and lubrication condition every 300 hours and replenish grease every 500 hours. Replace the bearing immediately if pitting occurs on the rollers, the dust cover is damaged, or the radial clearance exceeds 0.05mm to prevent component damage.