Products Description
Built to withstand intense lateral side-thrust forces generated by rotating swashplate angles, our Bimetal Piston Pump Sleeve Bushing pairs an alloy steel backing with a heavy-duty high-lead bronze inner wall. We manufacture this precision Bimetal Piston Pump Sleeve Bushing for main drive shafts and cylinder barrel journal guides in high-pressure axial piston pumps operating in excavators, mining trucks, and oilfield skids. Capable of supporting static radial loads up to 280 N/mm² with roundness within 0.003 mm, our Bimetal Piston Pump Sleeve Bushing eliminates shaft eccentricity and protects expensive rotating assemblies from catastrophic seizure.
Application Scenarios
- Main drive shaft bearings and cylinder block guide sleeves in axial piston pumps.
- Heavy-duty mobile hydraulic drives in excavators, cranes, and mining haulers.
- Hydraulic pump remanufacturing and overhaul facilities.
Technical Specifications
|
Material Structure |
Alloy steel shell + high-lead bronze lining |
|
Static Radial Load Capacity |
≤280 N/mm² |
|
Bore Roundness |
≤0.003 mm |
|
Alloy Hardness |
HB 80–110 |
|
Maximum Operating Temperature |
260°C |
Customization Capabilities
- Custom internal lubrication groove geometry engineered for high-pressure side loading.
- Tailored diameters, retaining ring grooves, and locating notches per CAD prints.
- Sample delivery within 30 days; production runs starting with a 100-piece MOQ.
Quality Control
- Three-coordinate CMM inspection of bore roundness, runout, and wall thickness uniformity.
- Metallurgical shear testing on steel-bronze bonding under high dynamic stress.
- 100% individual inspection for micro-cracks, surface finish, and corrosion protection.
FAQ
Q: Why is high-lead bronze preferred for piston pump shaft bushings?
A: High-lead bronze provides soft embeddability and self-lubricating properties, absorbing micro-debris and resisting scoring when high lateral forces momentarily rupture the oil film.
Q: Are custom prototypes free of charge?
A: Prototypes require a tooling and sampling fee, but sample costs are creditable against future high-volume orders exceeding 5,000 units.
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