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{"title":"Cat 3412 BRAKE,DISC CALIPER HYD 139-5620 (MICO) 02-520-202","imgUrl":"https:\/\/img.chinax.com\/nimg\/bc\/e0\/0647c4ab9d174ac736124f45c4e6-200x200-1\/cat_3412_brake_2cdisc_caliper_hyd_139_5620_0a_28mico_29_02_520_202.jpg","attrs":{"Brand":"MICO, USA (a professional manufacturer of heavy-duty industrial brakes)","Place of Origin":"USA","Price":"6319","Minimum Order Quantity":"1"}}
Alloy layer peeling, bearing seizure and excessive wear. Inspect roundness and surface condition of main journal during replacement
Packaging Details
Original packaging
Lubrication
Use original MWM SAE 40 special oil for gas engines. Normal operating oil pressure: 4–6 bar
Fitting Clearance
0.18–0.25 mm
Installation
Place the oil groove side towards the crankshaft and align locating tabs to prevent displacement
Payment Terms
T/T
Place of Origin
Germany
Brand Name
MWM DEUTZ
Model Number
12420020
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.
