CAT 459-3617 BUSHING

CAT 459-3617 is a Caterpillar genuine alloy steel bushing, suitable for articulated parts such as the boom, stick, and cylinder pins of excavators, loaders, and other equipment. It is used to withstand heavy loads and impacts, reduce pin wear, and maintain motion accuracy. The following is core information about Cat®…

Core Technical Parameters

Item Details
Part Model: CAT 459-3617 (Alloy steel bushing, with oil grooves, press fit, no flange, standard tolerances)

Material: 40Cr alloy steel, surface hardened (HRC 58-62), precision ground inner bore, suitable for -40℃ to +120℃ operating conditions

Key Dimensions: Inner diameter 63.5 mm (2.50 in), outer diameter 82.55 mm (3.25 in), length 76.2 mm (3.00 in), chamfer 1.5 mm

Unit Weight: Approx. 1.25 kg (2.7558 lbs)

Lubrication and Tolerances: Inner bore with axial + circumferential cross oil grooves, suitable for lithium-based grease; inner diameter tolerance H7 (+0.030 mm), outer diameter tolerance p6 (+0.042 mm), press fit interference 0.015-0.025 mm

Core Functions Provides a wear-resistant sliding surface for the pin, absorbs impact loads, prevents loosening of the hinge, and is suitable for heavy-load and frequent oscillation conditions.

Structure and Core Functions

Alloy Steel Quenched Structure: Made of 40Cr material, quenched and tempered, with high surface hardness and good core toughness, capable of withstanding heavy loads and impacts, suitable for high-frequency oscillation conditions in engineering machinery.

Cross-groove Design: Axial and circumferential cross-grooves in the inner hole ensure uniform grease distribution, reduce sliding friction, and extend the service life of the pin and bushing.

Pressure Fit Installation: Outer diameter p6 tolerance, installed into the support hole using a pressure fitting tool, ensuring no loosening after installation, precise positioning, and guaranteeing the movement accuracy of the hinge.

Flangeless Design: Adapts to standard support installation space, with a compact structure, suitable for various hinge parts, and highly versatile.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 320GC/323GC excavators, 966M/972M loaders, and some graders for boom pins, stick pins, cylinder lugs, and other articulated parts.

Core Applications: Used in heavy-duty articulated parts to support pins and reduce wear, absorb impact loads during operation, maintain smooth equipment operation, and extend the lifespan of pins, supports, and other components (Cat®…).