JF-800 Bimetal Bushing Steel Backed Sintered Tin Bronze Split Sleeve Bearing With Oil Pits for Hydraulic Cylinder Excavator Machinery

Product Overview

JF-800 bimetal bushing is a split type steel bronze composite bearing, manufactured by sintering tin bronze powder onto a low-carbon steel backing. The inner bore is designed with dense oil storage dimples, which can retain grease and form an oil film during operation. It is engineered for boundary lubrication heavy-load working conditions.

This bimetal sleeve combines the high mechanical strength of steel base and excellent friction & wear performance of bronze layer. It can withstand heavy static and dynamic load, resist fatigue and shock, and has a long service life compared with ordinary cast bronze bushing. It is widely adopted in hydraulic cylinders, construction machinery, automotive chassis, agricultural equipment, machine tools and gear pumps. Standard sizes in stock, custom machining available according to drawings.

Key Features

✅ Dual-layer composite structure: Low carbon steel backing + sintered CuSn10 tin bronze layer, high mechanical strength, impact resistant

✅ Oil storage pits on inner surface: Store lubricant, maintain boundary oil film, reduce friction and wear

✅ Split open sleeve design: Easy installation, suitable for shaft hinge and articulated structures

✅ High load capacity: Good performance under intermittent heavy load and low speed operation

✅ Stable friction coefficient: Low wear rate, reliable performance with grease/oil lubrication

✅ Precision machining: Strict bore & outer diameter tolerance, fine inner surface finish Ra ≤0.8μm

✅ Flexible customization: Custom ID, OD, length, flange, oil groove and special shapes supported

Technical Parameters

Application Scenarios

• Construction machinery: Excavator arm, bucket hinge, boom connecting rod
• Hydraulic system: Hydraulic cylinder guide bushing, piston bushing
• Automotive & transportation: Chassis, suspension, transmission parts
• Agricultural machinery: Harvester, tractor hinge assembly
• Machine tools & automation equipment: Gear pump, linear moving mechanism
• General heavy-duty mechanical articulated parts

Our Advantages

1. Factory direct supply: Professional manufacturer of composite bearings, stable quality & competitive price
2. Strict quality control: Raw material inspection, sintering process control, dimensional full inspection before shipment
3. Rich stock: Large inventory of standard JF-800 sizes, fast delivery
4. Custom machining: Support non-standard drawing processing, flange bushing, special oil groove customization
5. Complete test reports: Material test, wear test available upon request
6. Professional technical support: Provide bearing selection guidance and installation suggestion

Packing & Shipping

• Packing: Plastic bag + carton box, wooden case for bulk cargo to avoid damage during transit
• Shipping: Express / Air / Sea, we can work with your designated forwarder
• MOQ: Small quantity sample order acceptable, bulk order for wholesale

FAQ

Q: What lubrication is required for JF800 bimetal bushing? A: It works under boundary lubrication. Please fill grease or oil into the dimples before assembly. Regular re-lubrication will extend service life.

Q: Can you make custom sizes? A: Yes. We can produce non-standard inner diameter, outer diameter, length, flange and special structures according to your drawings or samples.

Q: What is the lead time? A: Standard sizes: 3-7 days. Custom items: 10-20 days based on quantity.