CAT 093-1839 BUSHING

CAT 093-1839 (0931839) is a Caterpillar genuine steel straight-tube articulated bushing for construction machinery. It is compatible with the articulation points of the working devices of 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used in conjunction with 092-5172 bearings and 093-1601/093-1602 retainers to reduce wear, bear weight, absorb vibration and shock, and ensure smooth operation of the articulated parts (Cat® Parts).

Core Parameters and Information

Project Details
Part Model: CAT 093-1839 (0931839) Steel Straight Cylindrical Bushing

Type: Straight cylindrical steel bushing for articulation in engineering machinery, wear-resistant load-bearing component

Material: Low carbon alloy steel, surface hardened + anodized blackened, hardness HRC45-52, wear-resistant, impact-resistant, suitable for outdoor working conditions

Key Dimensions: Inner diameter φ75mm, outer diameter φ85mm, length 45mm, wall thickness 5mm, compatible pin φ75mm, mounting hole φ85mm

Compatible Models: CAT 259D3/279D3 skid steer loader, 906H/907H mini excavator

Matching Relationship: Compatible with 092-5172 bearing, 093-1601/093-1602 retainer, 090-9289 retaining ring, 087-1873 Dustproof rings are used for wear reduction and positioning of articulated joint assemblies.

Suitable for:
Suitable parts: Articulation points of skid steer loaders, mini excavators (boom and frame, connecting rod and boom, etc.). Installed between the mounting hole and the pin, it isolates direct metal-to-metal contact, reduces the coefficient of friction, buffers vibration and impact, and extends the life of the pin and mounting hole.

Application scenarios: Suitable for complex outdoor working conditions such as excavation and loading, relying on steel structures for load-bearing. Surface treatment improves wear resistance, suitable for variable load and vibration conditions.

Core functions: Wear reduction, load-bearing, and buffering; ensures flexible rotation of articulated parts, reduces abnormal noise and wear, and improves work efficiency and component durability.

Installation and maintenance points:
Installation: Clean the mounting hole and pin surface, check the bushing for cracks and deformation; use a pressing tool to smoothly press it into the mounting hole, ensuring no misalignment, and a tight fit without looseness after pressing; assemble with bearings, retainers, etc., ensuring an axial clearance of 0.1-0.3mm and smooth operation.

Maintenance: Inspect the bushing every 200 hours for wear, deformation, or loosening. Replace any abnormal bushings immediately to prevent direct contact between the pin and the mounting hole, which could damage components.

Replacement: Use a specialized puller to remove the old bushing and inspect the mounting hole and pin for wear. Before installing the new bushing, verify its dimensions to ensure it matches the mounting hole and pin. After installation, test the hinge area for any abnormalities.