JF-721 is a bimetal bearing featuring a steel back and sintered CuPb24Sn4 lining. This bearing type offers excellent anti-fatigue performance and heavy load capacity, making it suitable for medium-speed and medium-load applications. When the soft alloy is plated on the bushing surface with oil lubrication, it becomes suitable for high-speed internal combustion engines and connecting rods.

• Steel body with bronze liner and PTFE/lead overlay for excellent wear resistance and tremendous compressive strength
• Superior wear and friction performance across various loads, speeds, and temperature conditions
• Effective performance with or without lubrication
• Suitable for all brands of excavators

• Operates with minimal or no oil, requiring little to no maintenance
• Excellent abrasion resistance with low coefficient of friction for extended operational life
• Wide operating temperature range: -195°C to +280°C
• Good mending properties, low-noise operation, and non-polluting
• Thin-walled structure reduces weight and enables compact machine design
• Forms protective transfer film during operation for safe, trouble-free performance
• Low surface hardness requirements reduce mating component costs
• Non-absorbent to water/oil, low thermal expansion coefficient, excellent thermal conductivity and size stability
• Steel back can be plated with various metals for corrosion resistance