Our Services
- Oil Pressure Switch
- Temperature Sensor
- Charge Air Combination Sensor
- Rotational Speed Sensor
- Oil Pump
- Timing Rotary Shaft Seal
- Oil Cooler
- Engine Mount LH
- Engine Mount RH
- Camshaft Bush Set Of 7
- LU Oil Spray Nozzle
- Shaft Lip Type Seal / Crankshaft RR
- Oil Dipstick Tube / Guide Tube Assembly
- Oil Sump
- Sealing Washer For Head Cover
- Filler Cap
- Gasket / Rocker Cover
- Cylinder-Head Bolt 14X2.0X123
- Cylinder-Head Bolt 16X2.0X150
- Valve Guide Exhaust Set Of 18
- Valve Seat Ring Exhaust / Intake Set Of 18
- Intake/Exhaust Valve Set Of 18
- Valve Stem Seal Set Of 18
- Cylinder Head Gasket
- Constant Throttle Line Zigzag Line
- Connecting Rod Bearing STD Set Of 6
- Main Bearing STD
- Thrust Washer / STD
- Connecting Rod
- Connecting Rod Bush Set Of 6
- Piston / BA/BS3
- Piston Ring Set Of 6
- Cylinder Liner
- Push Rod
- Valve Tappet
- Pressure Pipe Connection Pencil
- Pressure Line
- Unit Pump PLN
- Fuel Feed Pump
Main Bearing STD
These standard-size main bearings maintain correct oil clearance between the crankshaft and engine block, providing stable lubrication and reducing friction under heavy load conditions. Made from high-strength, wear-resistant bearing alloy, they withstand continuous pressure, high temperatures, and long operating hours. Their precision fit helps prevent crankshaft wobble, oil pressure loss, and premature wear.
By offering consistent crankshaft support, these bearings contribute to smooth engine performance, reduced vibration, and extended engine life. They play a critical role in maintaining proper combustion timing, minimizing mechanical noise, and ensuring reliable operation in commercial diesel engines.
Key Features
- Standard-size main bearings for crankshaft support
- High-strength bearing alloy for durability
- Ensures proper lubrication and oil clearance
- Reduces friction, vibration, and wear
- Designed for heavy-duty diesel applications
Product Specifications
| GROUP | MODEL | REF. PART NUMBER | SPECIFICATIONS |
|---|---|---|---|
| 19.036 | 3128, 2523, 2528 | A9260300740 | Main Bearing – STD Size |
Process Steps
- Remove crankshaft and old main bearings
- Clean bearing seats and journal surfaces
- Install new STD-size main bearings
- Check oil clearance using plastigauge
- Torque main bearing caps to OEM specs
- Verify smooth crankshaft rotation and oil pressure
FAQ
What is the purpose of main bearings?
They support the crankshaft and ensure smooth rotational movement with proper lubrication.
When should main bearings be replaced?
When there is low oil pressure, crankshaft noise, excessive wear, or during a full engine overhaul.
