Connecting Rods & Pins

OEM-Level Accuracy & Structural Integrity for Connecting Rods & Pins

KIMI specializes in the reconditioning and overhaul of connecting rods and crosshead pins for 2-stroke diesel engines, components subjected to extreme mechanical and cyclic loading. Common failure modes include ovality, surface fatigue, serration cracking, overheating, and dimensional distortion, particularly in big-end bearing bores and crosshead pin journals.

Using advanced grinding and precision machining, we restore critical geometries, tolerances, and surface finishes to OEM specifications. Our process ensures correct bearing clearances, load distribution, and alignment under operating conditions.

The result is improved structural integrity, reduced wear rates, and reliable long-term performance, fully compliant with OEM and classification society requirements.

Precision boring and reconditioning of marine engine connecting rod big-end at KIMI
Complete big-end reconditioning through precision boring and machining delivers the required accuracy and surface quality for minimal friction and maximum performance.
Crosshead Pin Reconditioning through Precision Polishing & OEM Tolerance Restoration
Final polishing of 2-stroke crosshead pin ensures mirror-smooth surface finish, proper oil film retention, and OEM compliance.
CNC machining of 2-stroke connecting rod big-end bore at KIMI workshop
High-precision CNC machining of a 2-stroke connecting rod big-end bore achieving zero eccentricity for proper operation and minimized wear.
Polishing process of 2-stroke crosshead pins to restore surface finish and geometry at KIMI’s precision workshop.
Polishing of 2-stroke crosshead pin restores surface finish and dimensional accuracy, ensuring proper lubrication and reduced wear.
DRAG
Precision boring and reconditioning of marine engine connecting rod big-end at KIMI
Crosshead Pin Reconditioning through Precision Polishing & OEM Tolerance Restoration
CNC machining of 2-stroke connecting rod big-end bore at KIMI workshop
Polishing process of 2-stroke crosshead pins to restore surface finish and geometry at KIMI’s precision workshop.

Customer Benefits

<h3>Rapid Turnaround</h3>

Rapid Turnaround

<h3>Cost-Effective Component Restoration</h3>

Cost-Effective Component Restoration

<h3>OEM-Level Quality & Durability</h3>

OEM-Level Quality & Durability

Connecting Rod & Crosshead Pin Reconditioning Process

01

CLEANING & DIMENSIONAL INSPECTION

Surfaces are cleaned and measured to establish condition and baseline geometry

02

DISMANTLING & CRACK DETECTION

Components are dismantled and inspected using MPI to identify surface and subsurface defects

03

BIG END BORE RESTORATION

Diameter and geometry are corrected eliminating ovality through precision grinding

04

CROSSHEAD PIN RECONDITIONING

Geometry is restored via polishing or laser cladding to OEM tolerances

05

ASSEMBLY, FINAL INSPECTION & QUALITY

Components are assembled and torqued followed by full verification ensuring OEM compliance and quality

Read the Most Frequently Asked Questions

Why Rely on KIMI

Precision grinding of connecting rods and crosshead pins to OEM specifications
0.01
mm

Precision Grinding Accuracy

1,200
mm

Connecting Rod Big-End Diameter Capacity

100
%

Quality Assurance| ESSYD-certified Laboratory

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Beyond Conventional Marine Engine Repairs

We Restore What Others Replace
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FAQs

KIMI provides complete reconditioning of connecting rods and crosshead pins for 2stroke diesel engines. The process includes cleaning, dimensional inspection, dismantling, crack detection (MPI/Magnaflux), big-end bore restoration through precision grinding, crosshead pin polishing or laser cladding, final assembly, and comprehensive inspection to ensure all components meet OEM specifications.

Big-end bores are restored using precision grinding techniques to eliminate ovality and return the bore to its original diameter, ensuring proper bearing fit and alignment.

Crosshead pins are reconditioned through precision polishing or laser cladding, depending on the level of wear. This restores the surface geometry and ensures compliance with OEM tolerances.

KIMI combines advanced machining, strict quality control, and adherence to OEM standards to deliver reliable, high-precision reconditioning. This ensures improved component lifespan, optimal engine performance, and reduced operational risk.