CAT 599-8867 135mm Outer Diameter Straight Sleeve Bearing

CAT 599-8867 is a Caterpillar genuine steel-backed bronze composite straight sleeve bearing with an outer diameter of 135 mm. It is suitable for the pin support of the boom, stick, bucket, and other working devices of excavators, loaders, and other construction machinery. The following are raw specifications and do not include information on replacement parts (Cat® Parts).

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 599-8867, Type: Straight Sleeve Bearing, Material: Steel Back + CuPb10Sn10 Bronze Alloy, Single Weight: 8.6 kg, Suitable for medium-low speed, medium-heavy load oscillating conditions, Operating Temperature: -40℃ to +150℃, Rated Dynamic Load ≥380 kN, Rated Static Load ≥650 kN, Suitable Shaft Diameter: φ110 mm, Used for pin support in working devices, limiting radial displacement and withstanding impact loads (Cat® Parts)
Key Dimensions (Metric / Imperial): Inner Diameter: 110.0 mm (4.331 in, Tolerance 0/-0.030 mm), Outer Diameter: 135.0 mm (5.315 in, Tolerance 0/-0.040 mm), Overall Length: 120.0 mm (4.724 in, Tolerance ±0.20 mm), Wall Thickness: 12.5 mm, steel backing thickness 2.5 mm, bronze layer thickness 10.0 mm, inner hole roughness Ra≤0.4 μm, shaft interference 0.018-0.028 mm, mounting hole clearance 0.015-0.025 mm

Performance Parameters: Hardness HB 90-110, coefficient of friction ≤0.08 (grease lubrication), limiting speed 500 rpm (grease lubrication), permissible radial load ≤280 kN, compatible with Cat general-purpose lithium-based grease, steel backing enhances load-bearing capacity, bronze layer reduces friction and wear, possesses good impact resistance and corrosion resistance.

Structure and Compatibility Characteristics:

Advantages of Composite Materials: The steel backing provides high-strength support, the bronze alloy layer has excellent friction reduction and embedding properties, can accommodate small impurities, suitable for high-frequency impact and heavy-load conditions in engineering machinery, and is not easily deformed or worn by Cat® Parts during long-term use.

Straight-cylinder flangeless structure: Fixed within the mounting hole via interference fit, ensuring pin coaxiality, reducing vibration and noise, suitable for space-constrained internal parts of working devices, and exhibiting slow radial clearance growth over long-term use.

Working condition adaptability: Suitable for low-speed, heavy-load oscillating conditions in engineering machinery, resistant to harsh environments such as dust and humidity, and lubricated with Cat universal lithium-based grease.

Installation and maintenance points (raw data)

Installation: Clean the mounting hole and pin (free of oil and burrs), cold-press installation (pressure ≤450 kN), ensuring the end face is flush with the mounting surface, and that the pin rotates freely without jamming. Control the clearance and interference fit according to the dimensional parameters.

Maintenance: Check lubrication and wear every 1200 hours. Replace if radial clearance exceeds 0.30 mm; for long-term storage, apply anti-rust oil and seal to prevent oxidation of the steel backing and bronze layer.