CAT 124-0149 BUSHING

CAT 124-0149 is a Caterpillar genuine straight-tube steel-based self-lubricating bushing, suitable for articulated parts such as the boom, stick, and bucket, used in heavy-duty articulated applications on excavators, loaders, and other equipment. The following are precise original factory specifications and application information; replacement parts are not included.

Core Technical Parameters

Item Details
Part Model CAT 124-0149 (Straight-tube steel-based self-lubricating bushing, for hinged joints)

Product Type Engineering machinery structural bushing, suitable for boom pins, stick pins, bucket pins, and other hinged shafts, bearing radial loads, reducing friction, and preventing uneven wear.

Material Base Material: Low carbon steel (SPCC), surface sintered bronze layer (CuSn10), porosity 20%–25%, impregnated with solid lubricant (PTFE+MoS₂)

Key Dimensions Inner diameter 50 mm (1.969 in), outer diameter 60 mm (2.362 in), length 70 mm (2.756 in), wall thickness 5 mm, chamfer 1 mm, radial clearance 0.10–0.15 mm

Rated Parameters Applicable working pressure ≤ 40 MPa, applicable temperature -30℃ ~ +150℃, applicable swing speed ≤ 0.5 m/s

Physical Properties Density 7.85 g/cm³, hardness Shore B 90, compressive strength 350 MPa, coefficient of friction μ≤0.12
Single weight: Approx. 0.51 kg (1.12 lbs)
Lubrication method: Self-lubricating + periodic grease replenishment (refill every 500 hours)
Compatible media: Lithium-based grease, complex lithium-based grease, etc.
Structure and core characteristics:
Steel-based composite structure: Low-carbon steel substrate ensures strength, bronze sintered layer provides load-bearing and oil storage capacity, solid lubricant reduces friction, suitable for heavy-duty articulated swing conditions.
Self-lubricating and wear-resistant: Solid lubricant + bronze pore oil storage reduces wear on articulated shafts and bushings, extending the life of pins and structural components.
Impact and deformation resistance: The steel-based structure can withstand impact loads and is not easily deformed, suitable for vibration and impact conditions during equipment operation.
Suitable for heavy-duty conditions: Suitable for heavy-duty articulated parts such as booms and sticks, rated pressure up to 40 MPa, meeting high-intensity operation requirements. Compatible Models and Application Scenarios

Compatible Equipment: Boom, stick, and bucket articulation points of CAT 312/313/315 excavators, 914/918 loaders, and 420/430 mini excavators.

Core Purpose: Installed within the bushing holes of the boom pin, stick pin, and bucket pin, providing radial support and lubrication, reducing wear on the articulation shaft and holes, suitable for heavy-duty working conditions with frequent oscillations, ensuring equipment operating efficiency and structural component reliability.