Bimetallic Bushing

Definition

Bimetal bushings are a kind of sliding bearing components made of two different metal materials composite, usually low carbon steel as the substrate, the surface sintered or composite copper alloys (such as CuPb10Sn10, CuPb24Sn4, etc.) in order to form a wear-resistant layer. The design combines the high strength of steel with the wear resistance and self-lubricating properties of copper alloys, which can withstand high loads and operate stably at low speeds or under limited lubrication conditions.

Core value
🔹 bimetallic composite structure: high-strength steel backing (tensile strength ≥500MPa) + wear-resistant copper alloy layer (CuSn8/CuPb24)
🔹 Extraordinary load-bearing capacity: static load up to 250MPa, dynamic load 100MPa, which is three times higher than that of traditional bearings
🔹 Intelligent lubrication design: Optional graphite inlay or PTFE composite lubrication system, with a friction coefficient as low as 0.08
🔹 Extreme working condition expert: stable operation within a wide temperature range of -50℃ to +280℃, with an instantaneous temperature resistance of 350℃

Technical parameters
Project standard type, heavy-duty type, high-speed type
The steel back is made of high-quality carbon steel 42CrMo alloy steel and stainless steel 304
The copper layer composition is CuSn8 phosphor bronze, CuPb24 lead bronze, CuAl10 aluminum bronze
The thickness of the copper layer is 1.5-2.0mm, 2.0-3.0mm, 1.0-1.5mm
Hardness: HB 70-90, HB 60-80, HRB 85-95
The PV limit values are 4.5 N/mm²·m/s, 5.8 N/mm²·m/s, and 3.8 N/mm²·m/s
Thermal conductivity: 60 W/m·K, 55 W/m·K, 45 W/m·K

Application field
✅ Construction machinery: slewing bearings of excavators, guide sleeves of hydraulic cylinders
✅ automotive industry: transmission bearings, chassis suspension joints
✅ shipbuilding: steering gear bearings, propeller bushings
✅ Metallurgical equipment: roller bearings for continuous casting machines, bushings for rolling mills

Five major technical advantages
✨ Excellent load-bearing capacity: The steel base provides support strength, and the copper layer ensures wear resistance
✨ Cost optimization: 35% less material cost than integral cast copper bushings
✨ Excellent heat dissipation: Thermal conductivity reaches 60W/m·K, quickly dissipating frictional heat
✨ extraordinarily long lifespan: It has passed 2 million durability tests, with its lifespan increased by 5 to 8 times
✨ maintenance-free design: Optional self-lubricating version, no oiling maintenance required throughout life

Deep customization
Non-standard size
Special oil trough/oil hole design
Laser marking of enterprise logos

Why choose us?

✅ Global quality supply chain: strictly selected international certified manufacturers to ensure bearings with high wear resistance, self-lubrication and corrosion resistance, performance against European and American standards.

✅ Fast response delivery: support customized parameters (material/size/lubrication design) to solve your urgent needs.

✅ Cost-optimal solution: factory direct supply + scale procurement, prices are 15%-30% lower than traditional procurement, provide full life cycle cost analysis to help you reduce costs and increase efficiency.

✅ Technical empowerment services: free diagnosis of working conditions and selection support, from mining heavy-duty to high-speed precision scenarios, accurate matching solutions to extend the life of the equipment 2-3 times.

✅ Worry-free after-sales commitment: lifelong traceability of quality issues, provide localized installation guidance and emergency spare parts library, so that your production zero worries.

Factory photos

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