Hot sale Parts for CAT 320D(AP-12) Main Pump | Partsdic®

Piston Assembly: The piston assembly is a vital part of the main pump, responsible for generating hydraulic pressure.

It consists of a piston, piston rings, and a cylinder block. The piston assembly should be made of high-strength materials to withstand the high pressure and friction. The piston diameter and surface finish are critical specifications to ensure proper sealing and smooth operation.

Cylinder Block: The cylinder block houses the pistons and allows them to reciprocate. It should have precise dimensions and smooth internal surfaces to minimize friction and ensure efficient hydraulic performance. The cylinder block should be manufactured from durable materials to withstand the high pressures and loads encountered during operation.

Valve Plate: The valve plate controls the flow of hydraulic fluid within the main pump. It consists of a series of valves that open and close to direct the fluid to different hydraulic circuits. The valve plate should be manufactured to tight tolerances to ensure proper sealing and accurate flow control. High-quality materials should be used to prevent wear and corrosion.

Drive Shaft: The drive shaft connects the main pump to the engine or motor, transmitting power from the prime mover to the pump. It should be strong and durable to withstand the torque and rotational forces. The drive shaft should have precise dimensions and a smooth surface finish to ensure proper engagement and minimize vibrations.

Swash Plate: The swash plate is a crucial component that converts the rotational motion of the drive shaft into reciprocating motion of the pistons. It should have an accurate angle and surface finish to control the piston stroke and hydraulic flow. The swash plate should be made from high-quality materials to withstand the forces and loads during operation.

Bearings: Bearings are used to support rotating components and reduce friction. High-quality bearings should be used in the main pump to ensure smooth operation and minimize wear. The bearings should have proper dimensions, load capacity, and lubrication capabilities to withstand the operational demands.

Seals and O-rings: Seals and O-rings are essential for preventing leaks and maintaining hydraulic pressure.

They are used in various locations within the main pump, including between the cylinder block and valve plate, and around the pistons. The seals and O-rings should be made from durable materials that can withstand high pressures, temperature fluctuations, and hydraulic fluids.

Housing: The housing encloses and protects the internal components of the main pump. It should be sturdy and well-designed to withstand the forces and vibrations during operation. The housing should have proper mounting points and provisions for cooling and lubrication.

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