379-2185: Bearing – Ball(Debris Resistant)

The Cat 379-2185 is a Caterpillar single-row deep groove ball bearing, commonly used in the gearboxes, differentials, and hydraulic pumps of construction machinery. It can withstand radial loads and slight bidirectional axial loads, and is suitable for medium-to-high speed, low-impact applications. Below are the core parameters and application points:

Core Parameters (Precise and Authoritative Version)

Item Details
Basic Information
Model: 379-2185, Type: Single-row deep groove ball bearing, Non-separable structure, with dust cover/seal ring, used to reduce rotational friction and position shafts. Suitable for Cat 950M/966M loaders, 320GC/336GC excavators, C13/C15 engines, 777F mining trucks, etc., for gearbox input shafts, differential side covers, hydraulic pump drive shafts, steering pump supports, drive shaft intermediate supports, etc.

Suitable Models
Suitable for Cat 950M/966M/972M loaders, 320GC/336GC/349GC This bearing is commonly used in excavators, C13/C15/C18 engines, 777F/785C mining trucks, D8T bulldozers, and 856H wheel loaders, particularly in components such as gearbox input shafts, differential housings, hydraulic pump spindles, power steering pumps, fan clutches, and drive shaft support seats.

Material and Manufacturing Process: The material is GCr15 bearing steel, vacuum-melted, quenched, and tempered, with a hardness of HRC 61-65. The surface is coated with a zinc-aluminum coating for corrosion protection, achieving a contact fatigue strength ≥1300MPa. The cage is made of reinforced nylon 66, and the rollers are high-precision chromium steel balls with a diameter of 6.35mm, 12 balls per ball, and a clearance grade of C2, suitable for high-precision installation.

Key Dimensions: Inner diameter 40mm (1.5748in), outer diameter 80mm (3.1496in), width 18mm (0.7087in), chamfer radius R1.5mm, weight approximately… 0.38kg, rated speed (grease lubrication) 6000rpm, (oil lubrication) 8000rpm, sealing type is double-sided contact rubber seal (2RS), protection level IP54. Load and accuracy: Basic rated dynamic load Cr 32.8kN, basic rated static load Cor 19.2kN, ultimate radial load 28kN, axial load 5kN, radial runout ≤0.015mm, rotational accuracy P5 grade, compatible with ISO 492 standard, suitable for medium-high speed, low-impact, high-precision transmission conditions, reducing operating noise and improving transmission efficiency.

Matching components: Compatible with Cat 10-9275 extreme pressure lithium-based grease (filling 1/3 of the bearing cavity), 379-2188 bearing seal, 8T-8730 bearing installation tool, 379-2186 bearing locating sleeve, matching journal machining accuracy h6, bearing seat bore accuracy H7, axial clearance controlled after installation. 0.02-0.05mm Function, Installation, and Maintenance Points

Core Function: Relying on the point contact between the steel balls and the inner and outer ring raceways, it reduces rotational friction, withstands radial loads and slight bidirectional axial loads, limits radial runout and axial movement of the shaft system, is suitable for medium-to-high speed and low-impact operating conditions, ensures smooth operation of the transmission system, and extends the service life of components.

Installation Points: Clean the journal and bearing housing bore, removing burrs and scratches; heat the inner ring to 80℃ using a bearing heater before installation, do not strike; after installing the sealing ring, apply grease and tighten the bearing end cap bolts to 35-45 N·m; after installation, manually rotate the shaft system to ensure there is no jamming or abnormal noise, and the radial runout is ≤0.015mm.

Maintenance points: Check bearing temperature (≤80℃) and abnormal noise every 1500 hours; replenish grease every 3000 hours; disassemble and inspect bearing wear every 6000 hours; avoid bearing contact with water and dust to prevent lubrication failure and corrosion; replace the bearing promptly if steel balls are found to be peeling off, the cage is damaged, or the seal fails.