Sauer Danfoss 90 Series Hydraulic pump Parts

The Sauer Danfoss 90 Series hydraulic pump is a high-performance, variable-displacement axial piston pump designed for demanding mobile equipment applications. Its key parts and their functions are summarized below.

1. Main Housing and Rotating Group:
• Housing: Serves as the main pressure vessel and mounting structure.

• Cylinder Block: Contains the piston bores and rotates with the drive shaft. Its porting aligns with the valve plate.

• Pistons: Typically nine pistons arranged in a circle. They reciprocate within the cylinder block bores.

• Slippers/Shoe Plates: Attached to the piston heads, they ride on the swashplate.

• Drive Shaft: Transmits motor torque to rotate the cylinder block.

2. Displacement Control Mechanism (Key to Variable Flow):
• Swashplate: A tilted, non-rotating plate. The angle of its tilt determines piston stroke and pump displacement.

• Control Piston (Servo Piston): A hydraulic piston that moves to change the swashplate angle. Controlled by system or pilot pressure.

• Bias Piston: A smaller piston that typically works against the control piston, providing a default swashplate angle (often toward maximum displacement).

3. Valve and Porting Assembly:
• Valve Plate (Port Plate): A stationary plate between the cylinder block and the case. It contains kidney-shaped ports for inlet (suction) and outlet (pressure) oil flow.

• Case Drain Line: A port that allows internal leakage (case flow) to return to the reservoir, preventing pressure build-up in the housing.

4. Control and Regulation Components:
• Control Valve (e.g., Pressure Compensator, Load Sensing Valve, Torque Limiter): This complex spool valve senses pump outlet pressure (and sometimes load pressure) and directs control oil to the control or bias pistons. It automatically adjusts the swashplate to maintain set pressure, flow, or power limits.

5. Bearings and Sealing System:
• Shaft Bearings: Support the drive shaft.

• Shaft Seal: Prevents external leakage.

• Various O-rings, gaskets, and seals: Ensure pressure integrity at all mating surfaces and moving parts.

For more information on the 90 series hydraulic pump parts, please visit https://www.baolilaihydraulic.com/.

Parts list

Q1: What is the primary function of the swashplate in the Sauer Danfoss 90 Series pump?

A1:The swashplate's primary function is to control the stroke length of the pistons, thereby determining the pump's displacement and output flow. It is the key component that enables the pump to be variable-displacement. The angle of the swashplate is directly changed by the control piston.

Q2:How to purchase the 90 Series Hydraulic pump Parts?

A2:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.

Q3:What is the price and delivery time of the 90 Series Hydraulic pump Parts?

A3:The specific price and delivery time will be provided based on the specific model you provide.A variety of hydraulic solutions are available at https://www.baolilaihydraulic.com/.