Factory in Stock Crankshaft Bearings & Connecting Rod Bearings For Land Rover AJ300 AJ20D6 3.0T L6 DT306 Diesel Engine LR074135

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Advantages and Application

Automotive Engine Bearing: Advantages and Application Scenarios

Automotive engine bearings are thin, precision-made sliding bearings that support rotating parts such as the crankshaft, connecting rod, camshaft, and balance shaft. They form a critical lubrication interface between moving components, enabling low-friction rotation under extreme pressure, heat, and load.

Core Advantages

1. Ultra-Low Friction & High Wear Resistance

• Run on a hydrodynamic oil film to avoid direct metal-to-metal contact.
• Special lining materials (aluminum alloy, copper-lead, bimetal/trimetal) provide excellent anti-friction and anti-seizure properties.
• Greatly reduce power loss and extend engine service life.

2. High Load-Carrying Capacity

• Withstand strong periodic impact loads from combustion pressure and inertia.
• Distribute stress evenly over a large contact area.
• Stable performance under heavy load, especially in diesel and turbo engines.

3. Excellent Embeddability & Conformability

• Absorb small hard particles (dust, metal debris) to prevent scratching journals.
• Adapt to minor shape errors or thermal deformation of the shaft.
• Improve reliability and reduce abnormal wear.

4. Good Fatigue Resistance

• Resist repeated alternating loads without cracking or peeling.
• Maintain performance at high engine speeds and long-term operation.
• Essential for high-performance and heavy-duty engines.

5. High Thermal Conductivity & Heat Resistance

• Quickly dissipate frictional heat to prevent overheating and bearing failure.
• Stable at high operating temperatures (up to 180°C or higher).
• Compatible with harsh working conditions.

6. Compact Structure & High Precision

• Thin-wall design saves space and helps reduce engine size.
• Strict dimensional accuracy ensures ideal oil clearance.
• Guarantee stable rotation and low NVH.

7. Corrosion Resistance

• Resist corrosion from acidic substances produced during combustion.
• Compatible with modern low-SAPS oils and alternative fuels.
  
  

Main Types and Application Scenarios

1. Main Bearings (Crankshaft Main Bearings)

• Location: Support crankshaft in engine block.
• Advantages: High load capacity, good fatigue and thermal resistance.
• Application Scenarios:
  • All types of internal combustion engines
  • Especially heavy-load diesel engines and high-power turbo engines

2. Connecting Rod Bearings

• Location: Between connecting rod and crankpin.
• Advantages: Impact resistance, high-speed stability, anti-seizure.
• Application Scenarios:
  • Passenger cars, commercial vehicles, racing engines
  • High-RPM gasoline engines and high-torque diesel engines

3. Camshaft Bearings

• Location: Support camshaft in cylinder head or block.
• Advantages: Low friction, good conformability, quiet operation.
• Application Scenarios:
  • OHC / DOHC modern engines
  • Engines with VVT and high-speed valve trains

4. Small End Bushings (Piston Pin Bushings)

• Location: Connecting rod small end, supporting piston pin.
• Advantages: Dry or semi-lubricated friction resistance, high temperature resistance.
• Application Scenarios:
  • All automotive engines
  • Especially turbocharged and high-performance engines

5. Balance Shaft Bearings

• Location: Support balance shafts.
• Advantages: Quiet, low friction, good durability.
• Application Scenarios:
  • Inline-4 engines with balance shafts
  • Engines focusing on NVH refinement

6. High-Performance / Racing Bearings

• Material: Trimetal, high-copper alloy, special coatings.
• Advantages: Extreme load capacity, anti-fatigue, anti-seizure.
• Application Scenarios:
  • Racing cars, modified high-power engines
  • Competition engines with extreme thermal and mechanical loads

7. Heavy-Duty Diesel Engine Bearings

• Advantages: Extra thickness, high strength, excellent fatigue life.
• Application Scenarios:
  • Trucks, buses, construction machinery, marine engines
  • Long-haul, continuous heavy-load operation

Conclusion

Engine bearings provide low friction, high load capacity, wear resistance, heat dissipation, and quiet operation to ensure stable rotation of crankshafts, connecting rods, and camshafts. Different materials and structures are used for passenger cars, commercial vehicles, high-performance engines, and heavy-duty diesel applications. They are essential components that directly determine engine reliability, power, and service life.

Neutral product packaging

Kusma Brand Packaging

Customized Service

Shipping photo

One-stop service

Advantages

Exhibition

Automotive Aftermarket Products Expo (AAPEX 2025)	AUTOMECHANIKA Shanghai 2025	Automechanika Istanbul 2025
INA PAACE Automechanika Mexico 2025	InterAutoMechanica 2025 (formerly INTERAUTO)

FAQ

Q1.Are you a factory or trading company ?

A:We are manufacturer specializing in the research and development, production, sales and service of pistons , Engine bearing. And we also sell other engine parts ,now We have some high-quality partner factories, we can provide one-stop service.

Q2.Whether you could customized production ?

A:Yes, you can tell me your requirement , we can according to your requirement to customized production , but you order quantity need meet our MOQ.

Q3.What is your delivery time ?

A:If we have this item in stock , we can mail it out within 3-5 days . if you need customized production ,in general 20-30 days .

Q4.Can I get a sample ?

A:Yes , we can send a sample for you test if we have this engine parts in stock .

Q5.How to guarantee the quality of your products?

A:1) Strict detection during production.

2) Strict sampling inspection on products before shipment and intact product packaging ensured.

Q6. What are your advantage ?

A:High quality control ,sufficient inventory ,competitive price ,OEM/ODM service,professional team and advantage technology.

Q7.What is your terms of packing?

A:Generally, Strong boxes neutral Packing , Or KUSIMA or Customization according to your request.

Q8.What is your terms of delivery?

A:EXW, FOB, CFR, CIF, DDU. DPA

Q10.What is your terms of payment?

A:T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q11.What is your minimum order? (MOQ)

A:If have stock,one piece is okay. If don’t have stock,we will produce for you. Different item,different MOQ.

Q12.If we can't find a required product on website,how can we do?

A:You can contact us and tell us OEM part number,we will check for you.