Crankshaft & Connecting Rod Bearings

OEM-Level Bearing Solutions with Full In-House Manufacturing Control

Crankshaft main and connecting-rod bearings operate under extremely high loads in large 2-stroke diesel engines, requiring precision overhaul or replacement to maintain performance and reliability.

At KIMI, we combine extensive expertise in bearing reconditioning and custom manufacturing, particularly when OEM parts are obsolete or unavailable within required lead times. Our solutions ensure full compatibility with crankshaft machining requirements and optimal operational performance.

We manufacture bearings using premium materials, including high-grade white metal (Babbitt), aluminium-based, and copper-based alloys. Each bearing is finished to strict OEM tolerances, delivering excellent durability, thermal stability, and reliable performance under continuous heavy-duty operation.

Precision manufacturing and CMM dimensional verification of marine engine bearings at KIMI
Complete bearing manufacturing to exact OEM requirements and tolerances, validated through strict NDT inspection and dimensional verification using CMM measurements.
2-stroke marine engine bearing shell with precision-machined lubrication groove at KIMI
Precision manufacturing of a 2-stroke bearing shell with accurately machined lubrication groove for optimized operation.
Re-metalizing process during 2-stroke bearing manufacturing at KIMI’s precision engineering facility.
Re-metalizing restores bearing surfaces with proper alloy layers, ensuring operation and durability to OEM-standard.
Upper and lower halves of 2-stroke engine bearing shells ready for assembly at KIMI’s workshop.
Upper and lower bearing halves machined to deliver required lubrication film for safe operation
Finished 2-stroke engine bearing shell ready for installation after precision machining at KIMI
Fully finished 2-stroke bearing shell restored to OEM geometry and surface finish, ensuring long-term performance and durability.
DRAG
Precision manufacturing and CMM dimensional verification of marine engine bearings at KIMI
2-stroke marine engine bearing shell with precision-machined lubrication groove at KIMI
Re-metalizing process during 2-stroke bearing manufacturing at KIMI’s precision engineering facility.
Upper and lower halves of 2-stroke engine bearing shells ready for assembly at KIMI’s workshop.
Finished 2-stroke engine bearing shell ready for installation after precision machining at KIMI

Customer Benefits

<h3>Fast Bearings Production Turnaround</h3>

Fast Bearings Production Turnaround

<h3>Cost-Efficient OEM alternative</h3>

Cost-Efficient OEM alternative

<h3>OEM- level Quality</h3>

OEM- level Quality

Bearings Remanufacturing Process

01

BEARING SHELL PREPARATION FOR WHITE METAL DEPOSITION

Bearing shell precision-machined for optimal white metal deposition and enhanced metallurgical bonding

02

LASER CLADDING DEPOSITION

White metal is applied via laser cladding achieving uniform structure and strong metallurgical bonding

03

CNC MACHINING

Dimensions, tolerances and concentricity are restored through high-precision machining

04

SURFACE FINISHING

Surface characteristics are optimized to improve lubrication, reduce friction and extend lifespan

05

QUALITY ASSURANCE

Dimensional, bonding and NDT tests are performed in accordance with classification requirements

Read the Most Frequently Asked Questions

Why Rely on KIMI

Reverse engineering manufacturing and laser cladding reconditioning delivering high quality and accuracy with optimized turnaround times
100
%

Overhaul, Inspection & Replacement if required

 

Up to 60
%

Lead Time Reduction

100
%

In-House Manufacturing via Reverse Engineering

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Beyond Conventional Marine Engine Repairs

We Restore What Others Replace
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FAQs

KIMI manufactures main and crankpin (connecting rod) bearings, engineered to meet precise crankshaft machining requirements and ensure long-term reliability under heavy loads.

KIMI supports a wide range of 2-stroke engines, including models such as 50MC-C, 60MC-C, and 70MC-C, with proven experience in the manufacturing of such bearings.

Depending on the application and operating conditions, bearings can be supplied as:

• Bi-metallic (steel backing with bearing alloy layer)
• Tri-metallic (steel backing with intermediate layer and white metal/Babbitt overlay)

Each solution is tailored to ensure optimal performance, durability, and compatibility with OEM specifications.

Yes. KIMI’s riding teams perform onboard inspection, replacement, and clearance measurements for main and crankpin bearings, ensuring proper fit, OEM compliance, and reliable engine operation.