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21141948 Premium Heavy-Duty Crankshaft Main Bearing Shell Set - Engine Crankshaft Journal Bearings for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20405516)

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  2. 21141948 Premium Heavy-Duty Crankshaft Main Bearing Shell Set - Engine Crankshaft Journal Bearings for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20405516)
21141948 Premium Heavy-Duty Crankshaft Main Bearing Shell Set - Engine Crankshaft Journal Bearings for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20405516)

Restore factory oil pressure and stabilize crankshaft rotation with our Premium Heavy-Duty Crankshaft Main Bearing Shell Set 21141948 (20405516). Built with a high-load multi-layer sintered copper-lead matrix and built-in oil transfer channels for VOLVO D7E/D6E engines, EC210D, EC240B, and EC290B excavators, this set prevents journal scoring and lower-end knocking. Factory-direct B2B wholesale pricing with fast international air express delivery. Contact our engineering support team with your Engine Serial Number for bulk volume quotes!

Genuine VOLVO Main Bearing Shell 21141948 Specification

Genuine VOLVO Crankshaft Main Bearing Shell Set — Engine Main Journal Bearing

The Genuine VOLVO Premium Heavy-Duty Crankshaft Main Bearing Shell Set (Part Numbers: 21141948 / VOE21141948 / 20405516), commonly known as main bearing shell, is a high-load core engine part specially designed for VOLVO D7E and D6E electronic common rail diesel engines. Installed inside engine block main bearing seats and bearing caps, it supports the whole crankshaft rotating assembly. Different from connecting rod bearings bearing single cylinder impact load, main bearings bear overall engine rotation gravity and strong torsion force. Replacing worn, scratched and peeling main bearings during engine overhaul can restore standard lubricating clearance, stabilize whole machine oil pressure, reduce running vibration and ensure stable operation of crankshaft assembly.

Core Technical Advantages

  • Multi-Layer Alloy Composite Structure: Steel base bonded with high-strength copper-lead anti-friction alloy layer, strong bearing capacity, excellent fatigue resistance against instantaneous torque impact.

  • Built-In Oil Hole & Oil Groove Design: Precision oil passage ensures smooth circulation of pressure engine oil, forms stable dynamic pressure oil film and avoids dry friction abrasion.

  • Good Impurity Embedding Performance: Soft surface layer can adsorb tiny metal particles in lubricating oil, effectively protect crankshaft journal from scratch damage.

  • Micron Level Precision Manufacturing: Strictly follow original factory thickness standard, accurately restore engine standard radial clearance after installation.

Technical Specifications

Engineering ParameterTechnical Data & Specification Details
Genuine OEM Part No.21141948 / VOE21141948 / 20405516
Product NameEngine Crankshaft Main Bearing Shell Set
Applicable EngineVOLVO D7E / D6E Series Diesel Engine
Surface Alloy MaterialSintered copper-lead high wear-resistant alloy
Lubrication StructureOil inlet hole + circumferential oil distribution groove
Specification GradeSTD standard size, matching original factory assembly clearance

Master Application Fleet Guide

This genuine main bearing set is widely used in bottom overhaul maintenance of VOLVO full-series engineering machinery engines:

  • Heavy Crawler Excavators: EC200D, EC200E, EC210D, EC210E, EC240B, EC250D, EC290B, EC300D

  • Backhoe Loaders & Wheel Loaders: BL60, BL71B, L45B, L110E

  • Road Construction Equipment: G710B, G746B, G960, G990 Motor Graders, SD135B Compactors, ABG8820B, P8820D Pavers

Critical B2B Procurement & Maintenance Guidelines

B2B Procurement Strategy

Crankshaft main bearing is one of the core essential replacement parts for engine major repair. Long-term operation will cause alloy layer wear, leading to increased clearance and decreased oil pressure. It is recommended that spare parts wholesalers and engine repair workshops stock sufficient quantity of this model, and combine with crankshaft thrust washers, connecting rod bearings, connecting rod bolts and crankshaft oil seals to form complete engine bottom overhaul kits, matching cylinder liner four-piece set for full engine repair service.

Common Failure Manifestations

  • Engine low oil pressure alarm often appears, more obvious at hot idle speed

  • Low-frequency heavy knocking sound inside crankcase, louder when accelerating and loading

  • A large number of copper alloy metal scraps appear in engine oil and oil filter

Standard Installation & Overhaul Rules
Stop the machine and cut off power supply, drain engine oil, remove oil pan, disassemble main bearing caps in specified sequence. Take out old bearings and check wear condition. Measure crankshaft journal roundness and taper before installation, repair or replace severely worn crankshaft timely. Thoroughly clean bearing seat inner wall to keep clean without impurities. Align the positioning clamp of new main bearings correctly and install in place. Evenly daub assembly oil on alloy contact surface, keep steel back dry and clean. Fasten main bearing bolts strictly according to factory torque and angle standard. Use Plastigage to detect bearing clearance, ensure within qualified range. Manually crank crankshaft to confirm flexible rotation without jamming before assembling other accessories and running-in test.

Global Brand Cross-Reference Matrix

BrandCross Reference Part Information
VOLVO Original Part Number21141948 / VOE21141948
Equivalent Replacement No.20405516
Industry Common NameCrankshaft Main Bearing / Main Journal Bearing Shell / Engine Big Bearing
Commercial Inquiry & Global Logistics
Supplier: Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]
Logistics: Global Sea Freight and Fast-Track Industrial Express Ready

All machine models are for compatibility reference only. Our high-strength main bearings stabilize lubrication system and extend overall engine service life effectively.

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