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DEUTZ MWM TBG620 V16(6002) – 12420020 Crankshaft Main Bearing

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DEUTZ MWM TBG620 V16(6002) – 12420020 Crankshaft Main Bearing
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Features
Specifications
Fitting Clearance: 0.18–0.25 Mm
Installation: Place The Oil Groove Side Towards The Crankshaft And Align Locating Tabs To Prevent Displacement
Common Defects: Alloy Layer Peeling, Bearing Seizure And Excessive Wear. Inspect Roundness And Surface Condition Of Main Journal During Replacement
Lubrication: Use Original MWM SAE 40 Special Oil For Gas Engines. Normal Operating Oil Pressure: 4–6 Bar
Basic Infomation
Place of Origin: Germany
Brand Name: MWM DEUTZ
Model Number: 12420020
Payment & Shipping Terms
Packaging Details: Original packaging
Delivery Time: 15days
Payment Terms: T/T
Supply Ability: 9999
Product Description

DEUTZ MWM TBG620 V16(6002) – 12420020

12420020 is standard size crankshaft main bearing shell, applied to DEUTZ MWM TBG620 V16(6002) gas engine, a key moving component of 620 series.

1. Basic Information

  • Part Number: 12420020 (OEM original part, standard size)
  • Type: Crankshaft Main Bearing (one set of upper and lower shells)
  • Applicable Models: MWM TBG620 V12/V16/V20, TBD620 series engines
  • Material: Bimetallic structure with steel backing and babbitt alloy coating, featuring good wear resistance and impact resistance for heavy-duty operation
  • Specification: Fits crankshaft main journal φ170 mm, standard thickness
  • Interchangeable & Related Parts:
    • 12420022: Standard main bearing of same specification, fully interchangeable
    • 12420024: Connecting rod bearing

2. Function & Application

It supports the crankshaft, bears combustion load and reduces running friction to ensure stable operation at 1500 rpm. Widely used in CHP, natural gas and biogas power generation units. Recommended for replacement during major overhaul every 8000–10000 operating hours.

3. Installation & Maintenance

  • Fitting Clearance: 0.18–0.25 mm
  • Installation: Place the oil groove side towards the crankshaft and align locating tabs to prevent displacement
  • Common Defects: Alloy layer peeling, bearing seizure and excessive wear. Inspect roundness and surface condition of main journal during replacement
  • Lubrication: Use original MWM SAE 40 special oil for gas engines. Normal operating oil pressure: 4–6 bar

4. Ordering Notes

Please confirm the engine model before ordering. This part is interchangeable with 12420022. Do not confuse main bearing with connecting rod bearing 12420024. Original parts are marked with MWM laser logo. Material certificates and dimensional inspection reports are required for aftermarket products.
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