CAT 7N-7796 BUSHING

CAT 7N-7796 is a small-size bushing specifically designed for Caterpillar genuine alternators/generators. It is suitable for mounting and transmission components of various construction machinery and heavy equipment. The following are core original specifications and application information; replacement parts are not included.

Core Technical Parameters

Item Details
Part Model: CAT 7N-7796 (BUSHING – ALTERNATOR)
Product Type: Cylindrical bushing for generator shaft end/mounting seat, without flange or locating groove, suitable for light load rotation and positioning conditions
Material: Tin bronze (CuSn6Zn6Pb3), oil-containing self-lubricating formula to improve wear resistance and friction reduction
Surface Treatment: Centrifugal casting + precision turning, inner hole surface roughness Ra ≤ 0.8 μm, outer diameter tolerance h6
Hardness: HB 90–110, coefficient of friction 0.08–0.12 (dry friction)
Weight: Approx. 0.05 kg (0.1 lbs)
Key Dimensions: Inner diameter 12 mm, outer diameter 16 mm, length 15 mm, suitable for generator shaft end or mounting hole position
Match Requirements: Suitable for shaft diameter tolerance f7, mounting hole tolerance H7, recommended radial clearance 0.02–0.04 mm
Operating Temperature -20℃ ~ +120℃

Load Capacity: Rated radial load ≥ 15 kN, suitable for low-load, low-speed generator transmission and positioning conditions.

Lubrication Method: Oil-based self-lubricating; no additional lubrication required under normal operating conditions. In high-temperature, high-dust environments, it is recommended to check and replenish lubrication every 1000 hours.

Sealing Compatibility: Compatible with O-ring seals; can be used with generator end cover seals to prevent dust and moisture intrusion.

Structure and Core Characteristics: Tin bronze oil-impregnated material. The material possesses good thermal conductivity and wear resistance. The oil-impregnated formula forms an oil film on the friction surface, reducing dry friction between the shaft end and bushing, suitable for low-speed rotation and vibration conditions of generators, extending component lifespan.

Small Size, High Precision: Compact dimensions and strict tolerance control, suitable for narrow spaces on generator shaft ends or mounting bases, ensuring accurate positioning after installation, reducing transmission vibration and abnormal noise, and ensuring stable generator operation.

Highly Compatible
Compatible with generators for Caterpillar 3306, 3406, and 3408 engines, as well as generator mounting locations on road rollers such as the 815B and 826C, loaders such as the 950F and 966F, and excavators such as the 320B and 320C, offering high versatility.

Compatible Models and Applications
Road Rollers: 815B, 826C, etc., used as positioning bushings between the generator shaft and mounting base to ensure stable generator transmission.

Loaders: 950F, 966F, 972F, etc., used as bushings at the connection between the generator and engine to reduce the impact of vibration on the generator.

Excavators: 320B, 320C, 325B, etc., used for positioning and cushioning of the generator mounting base, improving generator operational reliability.

Core application: Used for positioning and friction reduction of generator shaft end or mounting base, solving problems such as generator vibration, abnormal noise, and shaft end wear caused by bushing wear, and suitable for low load and low speed rotation conditions.