CAT 526-3050 BEARING-SLV-GD

CAT 526-3050 is a genuine Caterpillar YM straight sleeve bearing (straight bushing), primarily used in the articulation and steering components of construction machinery such as loaders and articulated trucks. It provides stable radial support and is suitable for medium to heavy loads and low to medium speed oscillating conditions. The following are the original manufacturer’s precise specifications and application information, excluding replacement parts.

Core Technical Parameters

Item Details
Part Model: CAT 526-3050 (YM Straight Sleeve Bearing, Flangeless, One-Piece Molding)

Material: Outer Ring: Low Carbon Steel (ST52-3), Inner Ring: High-Strength Brass (CuZn25Al6), with a sintered porous bronze layer containing solid lubricant, surface self-lubricating modification treatment, Hardness HB 110-130

Key Dimensions: Inner Diameter 50.00 mm (1.969 in), Outer Diameter 65.00 mm (2.559 in), Length 45.00 mm (1.772 in), Wall Thickness 7.50 mm, Inner Hole Surface Roughness Ra ≤ 0.10 μm

Performance Parameters: Radial Rated Load 42 kN, Allowable Linear Velocity 1.5 m/s, Operating Temperature -30℃ to +150℃, Coefficient of Friction ≤ 0.08, Wear Rate ≤ 0.01 mm/1000h

Unit Weight Approximately 0.52 kg (1.146 lbs)

Tolerances: Inner diameter tolerance H7 (+0.030/0 mm), outer diameter tolerance g6 (0/-0.019 mm), length tolerance ±0.12 mm, inner hole roundness ≤ 0.01 mm

Core Features: Self-lubricating and maintenance-free, suitable for applications without grease channels; impact-resistant brass inner ring; interference fit outer ring for fixation; corrosion-resistant and dust-resistant.

Structure and Core Functions:

Composite layer structure: The outer ring is made of low-carbon steel for rigidity; the middle bronze layer stores oil; the inner ring is made of high-strength brass for load bearing and self-lubrication, suitable for heavy-duty oscillating applications, requiring no additional lubrication system.

Interference fit design: The outer diameter is interference-fitted with the mounting hole (0.015-0.030 mm), ensuring no loosening after installation, precise positioning, and preventing the sleeve from rotating or shifting within the hole.

Self-lubricating properties: The bronze layer contains solid lubricant, forming an oil film during operation to reduce friction and wear, making it suitable for low-speed, high-frequency oscillating conditions in the articulated parts of construction machinery.

Sealing compatibility: Without flanges at both ends, it is compatible with O-rings or dust rings to prevent impurities from entering, protecting the inner ring of the bearing and extending its service life.

Compatible models and application scenarios:
Compatible equipment: Steering knuckles, frame articulation points, boom-to-frame connecting pins, etc., of CAT 950M and 962M medium-duty wheel loaders and 725 and 730 articulated trucks.

Core application: Installed in the connecting holes between the articulation pin and the frame/boom, it supports the articulation pin, transmits radial loads, and is suitable for frequent oscillating conditions such as steering and lifting in construction machinery, ensuring flexible operation of components. It is suitable for dusty and high-vibration construction site environments.