The Copper Steel Piston Pump End Plate is made for axial piston pumps and variable piston pumps operating under high pressure and frequent load changes.

It supports original equipment production, pump repair, and remanufacturing.

Material Structure

The component uses a high-strength alloy steel base and a high-lead bronze friction layer.

The steel provides rigidity, while the bronze surface supports low friction and reliable sealing.

Bonding Strength

The two materials have a shear bonding strength of at least 180 MPa.

This bonded structure is designed to remain stable under high-frequency alternating loads without layer separation or plastic deformation.

High-Pressure Stability

Piston pumps experience large and rapid pressure changes. The plate is optimized for fatigue resistance and dimensional stability under these demanding conditions.

Damping-Groove Design

The damping-groove profile is designed to reduce hydraulic impact and operating noise.

Cylinder Block Compatibility

Good running compatibility with the cylinder block helps maintain sealing and can extend the service life of the complete pump.

Surface Precision

End-face flatness is controlled within 0.003 mm. Surface roughness is Ra 0.15 μm or better.

The alloy layer hardness is HB 80–110.

Application Areas

The Copper Steel Piston Pump End Plate is suitable for construction machinery, petroleum machinery, and heavy hydraulic equipment.

It is compatible with HM anti-wear hydraulic oil and various fire-resistant hydraulic fluids.

Custom Manufacturing

Manufacturing is available according to customer drawings. The minimum order quantity is 100 pieces.

Sample Development

Custom samples normally require 30 days. Urgent orders may be shortened by about five days.

Product requirements, delivery timing, packaging, and transportation arrangements are confirmed during the order process.

Company Experience

The company was established in 2010, following bimetal production experience that began in 1995.

It has more than 50 employees, including a three-person R&D team.

Quality Monitoring

Quality equipment includes a coordinate measuring machine, roughness tester, hardness tester, and bronze-layer thickness gauge.

These instruments support quality monitoring throughout production.

After-Sales Service

Two employees are assigned to after-sales service. The product carries a six-month warranty.

Returns or replacements are handled within five days.

Product Specifications

Parameter	Specification
Material Structure	High-strength alloy steel base + high-lead bronze friction layer
Shear Bonding Strength	≥180 MPa
Working Pressure	Rated ≤35 MPa; peak 45 MPa
End-Face Flatness	≤0.003 mm
Alloy Layer Hardness	HB 80–110

Material Specifications

Layer	Material Grade	Strength Type	Strength (MPa)	Max. Linear Velocity (m/s)	Hardness (HB)	Remarks
Copper Alloy Friction Layer	CuPb10Sn10	Shear Strength	≥150	12	60–90	Surface coating available
Copper Alloy Friction Layer	CuPb7Sn7Zn3	Shear Strength	≥150	10	60–90	Surface coating available
Steel Substrate	SAE1010	Tensile Strength	≥365	-	90–130	Mild carbon steel
Steel Substrate	Q235B	Tensile Strength	370–500	-	90–130	Mild carbon steel
Steel Substrate	Q345B	Tensile Strength	490–675	-	110–170	Low-alloy steel

Copper Steel Piston Pump End Plate

Product Overview