Bimetal Bushings Used For Tractor OEM No. List Spindle Bush MF240 MF265,Conrod and Balance Bearing

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1. Material Composition & Design‌

Bimetal bushings combine a steel backing with sintered bronze/copper alloy layers for enhanced load capacity and wear resistance. Key material configurations include:

· ‌Base Layer‌: Low-carbon steel (e.g., DIN St12) for structural strength and shock absorption.

· ‌Friction Layer‌:

· ‌CuPb10Sn10‌: High lead-tin bronze alloy for heavy loads (static load ≤120 N/mm²) and moderate speeds

· ‌CuSn6Zn6Pb3‌: Zinc-modified bronze for improved corrosion resistance in marine environments38.

· ‌Surface Treatments‌: PTFE coatings or graphite impregnation for self-lubrication in oil-starved conditions

‌2. Manufacturing Processes‌

00001. ‌Powder Sintering‌:

· Bronze/copper alloy powders (e.g., CuPb10Sn10) sintered onto steel substrates at 800–900°C to form metallurgical bonds

· Porosity controlled at 15–25% for oil retention in oil-impregnated variants

00002. ‌Groove Engineering‌:

· Laser-engraved diamond or helical oil grooves to optimize lubricant distribution under high-speed rotation (>3000 rpm)

00003. ‌Post-Processing‌:

· Electroplating (e.g., tin or nickel) for corrosion resistance in acidic or humid environments

‌3. Performance Advantages‌

‌4. Industrial Applications‌

· ‌Automotive‌:

· Balance shaft bushings in heavy-duty trucks (e.g., AMW trucks) and gearbox bearings for EVs58.

· Engine components (e.g., connecting rod bushings) requiring high thermal stability

· ‌Construction Machinery‌:

· Track rollers in bulldozers and excavator pivot joints subjected to impact loads (>50 kN)

TRACTOR BUSHING OEM NUMBERS AND BUSH SIZES