CAT 538-6734 BEARING–SEM

CAT 538-6734 SEM is a Caterpillar genuine cylindrical roller bearing assembly, commonly used in the planetary carriers, final drives, or gearboxes of excavators, loaders, and other equipment. It is compatible with models such as the 320D/336D excavator and the 950H loader. Its core function is to withstand heavy radial loads and adapt to low-to-medium speed transmissions, ensuring smooth shaft operation (Cat®…).

Core Technical Parameters

Item Details
Part Model: CAT 538-6734 SEM Cylindrical Roller Bearing Assembly

Material: High carbon chromium bearing steel (GCr15SiMn), inner and outer rings quenched and tempered, hardness HRC 60-64, roller hardness HRC 61-65, cage is phenolic resin/stamped steel, temperature resistance -40℃ to 120℃, suitable for mineral oil lubrication, impact resistant, wear resistant Cat®…

Key Dimensions: Inner diameter 120mm, outer diameter 180mm, width 40mm, roller diameter 14mm, number of rollers 24, interference fit with shaft (interference 0.015-0.025mm), radial clearance 0.020-0.035mm, coaxiality tolerance ≤0.005mm Cat®…

Compatible Models: Compatible This product is suitable for 320D/323D/336D excavators, 950H/962H loaders, 430F2 loaders, etc., and is used for planetary gearbox bearings, final drive input shaft bearings, and gearbox output shaft bearings. It is compatible with the transmission systems of C6.4/C9 engines.

Performance Characteristics: Suitable for radial loads ≥80kN and speeds ≤2500rpm. It can withstand slight impact loads. The rollers and raceways have line contact, ensuring uniform load distribution. The cage guides the rollers to run smoothly, reducing vibration and noise and extending bearing life.

Core Functions and Structure:

Radial Heavy-Duty Load Bearing: The cylindrical roller line contact design is suitable for radial heavy-duty conditions in engineering machinery gearboxes and final drives, uniformly transmitting loads, preventing shaft deformation, and ensuring transmission efficiency (Cat®…).

Precise Guiding and Positioning: The inner and outer rings precisely fit with the rollers, providing precise radial positioning for the shaft system. The cage separates the rollers to avoid friction, making it suitable for low-to-medium speed, frequent start-stop operating environments, reducing vibration and noise.

Compatible with transmission systems: Adapts to components such as planetary carriers and final drives in gearboxes, working in conjunction with gears and shafts to transmit power, absorb shocks, prevent shaft misalignment, and ensure stable equipment operation.

Easy maintenance: The bearing assembly integrates inner and outer rings, rollers, and cages, eliminating the need for separate assembly during installation. This allows for efficient replacement, meeting the needs of batch maintenance and reducing repair costs.