194-4519: Angular Contact Steel Roller

Cat 194-4519 is a Caterpillar single-row angular contact steel roller, primarily used in the steering, lifting, or slewing mechanisms of heavy machinery such as loaders and bulldozers. It is suitable for low-to-medium speed applications where it can simultaneously withstand radial and unidirectional axial combined loads. The following are precise core information:

Core Parameters (Precise Version)

Item Details
Basic Information
Model 194-4519, type is single-row angular contact steel roller (asymmetric raceway design), used in equipment steering knuckles, rocker arms, or slewing bearings, etc., can simultaneously withstand radial and unidirectional axial loads, suitable for heavy-duty and vibration conditions, ensuring component positioning and movement accuracy.

Compatible Models
Compatible with Cat 950H and 966H loaders, D8T bulldozers, 773 mining trucks, etc., commonly used in steering knuckle pins, lifting cylinder hinge points, and auxiliary support parts of slewing bearings.

Material and Manufacturing Process Made of chromium-molybdenum alloy steel (40CrNiMoA), forged and tempered to a hardness of HRC30-35, possessing high strength and high toughness; the raceway surface is induction hardened to a hardness of HRC58-62, with a surface grinding precision Ra≤0.4μm and a contact angle of 15°, enhancing axial load-bearing capacity and wear resistance.

Key dimensions: Inner diameter 65mm, outer diameter 120mm, total width 32mm, chamfer C2, center hole diameter 25mm, contact angle 15°, weight approximately 2.8kg, dimensional tolerance ±0.02mm, compatible pin diameter 65mm, interference fit with bearing housing 0.01-0.03mm.

Matching components: Compatible pin model 10-3222 (M20×120mm), compatible bearing housing model 194-4520. Lithium-based grease is recommended (model…). (10-9275) During installation, ensure the coaxiality between the roller and the seat hole is ≤0.03mm.
Function, Installation, and Maintenance Points

Core Function: Bears combined radial and unidirectional axial loads, limits axial displacement of components, reduces the coefficient of friction, minimizes motion wear, adapts to steering, lifting, and other working conditions requiring positioning and guidance, and ensures stable equipment operation.

Installation Points: Use hot-fitting or cold-pressing processes for installation to avoid roller deformation; after installation, check the axial clearance (0.02-0.05mm) to ensure flexible and unobstructed movement; tighten bolts diagonally and evenly to a torque of 120-150 N·m.

Maintenance Points: Check lubrication status every 300 hours and replenish grease every 500 hours; replace the roller promptly when surface peeling, wear exceeding 0.1mm, or axial clearance greater than 0.1mm to prevent component failure.