Bimetallic Composite Bearing JF800 TCB301 Wrapped Bushing Steel Base Sintered Bronze Oil Pockets for Construction Machinery
Product Details
| Max Dynamic Load (Pmax): | 140 N/mm² | Max Static Load: | 250 ~ 300 N/mm² |
|---|---|---|---|
| Max Sliding Speed (Grease Lubrication): | 2.5 M/s | Max Sliding Speed (Oil Lubrication): | 5.0 M/s |
| PV Limit (Grease): | 2.8 N/mm²·m/s | PV Limit (Oil): | 20 N/mm²·m/s |
| Friction Coefficient (Grease): | 0.05 ~ 0.15 | Friction Coefficient (Oil): | 0.04 ~ 0.12 |
| Operating Temperature Range: | -40℃ ~ +250℃ | Bronze Alloy Hardness: | HB 60 ~ 90 |
| Thermal Conductivity: | ~60 W/(m·K) | Shaft Hardness: | ≥ HRC 53 |
| Shaft Surface Roughness: | Ra 0.32 ~ 0.63 μm | ||
| Highlight |
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Product Description
【Product Overview】
Our bimetal sliding bushing is a wrapped composite bearing manufactured by sintering lead bronze alloy onto a low-carbon steel backing. The inner surface is machined with precision oil dimples for lubricant storage. It is a heavy-duty sleeve bearing designed for oscillating, intermittent and high-load working conditions.
This bimetallic bushing combines the high mechanical strength of steel substrate and the excellent anti-friction & wear-resistant performance of bronze alloy. It can work reliably under heavy load, low speed and poor lubrication environments, widely adopted in construction machinery, automotive chassis, hydraulic cylinders, agricultural equipment and general mechanical articulated joints.
【Product Features】
✅ High Load Bearing Capacity Steel base structure supports heavy static & dynamic load, maximum static load up to 250~300 N/mm², suitable for heavy-duty hinge connection positions.
✅ Built-in Oil Dimples for Lubrication Precision distributed oil pockets on inner bore reserve grease or oil, continuously supply lubricant during operation, reduce friction coefficient and extend service life, lower maintenance frequency.
✅ Excellent Wear Resistance & Anti-seize Performance Sintered CuPb10Sn10 bronze alloy layer features good compatibility with steel shaft, effectively avoid shaft scratching under shock load and swing motion.
✅ Customizable Structure & Size Support custom inner diameter, outer diameter, length. Optional oil grooves, oil holes, flange structure. Outer surface can be tin-plated or copper-plated for anti-corrosion. Standard & non-standard sizes available.
✅ Wide Operating Temperature Range Stable performance from -40℃ to 250℃, adapt to outdoor construction, vehicle and other harsh temperature scenarios.
【Technical Parameters】
| Item | Specification |
|---|---|
| Material | Low carbon steel backing + Sintered CuPb10Sn10 Lead Bronze |
| Model | JF800 / TCB301 Bimetal Bushing |
| Max Dynamic Load | 140 N/mm² |
| Max Static Load | 250~300 N/mm² |
| Max Sliding Speed (Grease) | 2.5 m/s |
| Max Sliding Speed (Oil) | 5.0 m/s |
| PV Limit (Grease Lubrication) | 2.8 N/mm²·m/s |
| PV Limit (Oil Lubrication) | 20 N/mm²·m/s |
| Friction Coefficient | 0.04 ~ 0.15 |
| Working Temperature | -40℃ ~ +250℃ |
| Bronze Layer Hardness | HB 60 ~ 90 |
Shaft Recommendation: Shaft hardness ≥ HRC53; Shaft surface roughness Ra0.32~0.63μm
【Application Fields】
🏗 Construction Machinery: Excavator boom & arm hinge, loader, crane articulated parts
🚛 Automotive & Truck: Chassis, suspension, steering components
🌾 Agricultural Machinery: Harvester, tractor swing joints ⚙ Hydraulic Equipment: Hydraulic cylinder guide bushing
🔧 General Machinery: Injection molding machine, gearbox, automation equipment
【Our Advantages】
🔹 Factory direct supply, strict raw material inspection, ISO9001 & TS16949 quality control system.
🔹 Complete production line including CNC machining, sintering, surface treatment. Short lead time for bulk orders.
🔹 Professional engineering team, support drawing review and custom development for special working condition.
🔹 Strict dimensional inspection before shipment, stable quality for mass export.
【Notes】
- Recommended to fill lubricant into oil dimples before assembly.
- Avoid continuous high-speed operation beyond the PV limit.
- Please provide ID, OD, length and working condition when inquiry, we offer professional selection suggestion.
Product Highlights
【Product Overview】 Our bimetal sliding bushing is a wrapped composite bearing manufactured by sintering lead bronze alloy onto a low-carbon steel backing. The inner surface is machined with precision oil dimples for lubricant storage. It is a heavy-duty sleeve bearing designed for oscillating, ...
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