Connecting Rods - Main Engine and Propulsion

Connecting rods transmit combustion force between the piston or crosshead and crankshaft in marine propulsion engines. They are precision-forged, highly loaded components manufactured and matched to specific engine types and serial configurations.

ProShipWorks provides end-to-end support to source and supply Connecting Rods for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Connecting Rods
Product Category	Main Engine and Propulsion
Product Reference	6
Brands / Manufacturers	MAN B&W, Wärtsilä, WinGD
Unit of Measure	Piece

Key Features

Key Feature
1. Forged high-strength alloy-steel construction
2. Precision-machined big-end and small-end bores
3. Designed for cyclic compressive and tensile loads
4. Engine-specific geometry, balance and bearing arrangement
5. Replaceable bearing shells, bushes and fitted fasteners where applicable

Applications of Connecting Rods

Application
1. Low-speed two-stroke crosshead main engines
2. Medium-speed four-stroke propulsion engines
3. Marine diesel-electric and auxiliary engine installations

Models & Manufacturers

Model	Manufacturer
MAN 48/60CR connecting rod	Everllence
Wärtsilä 46F connecting rod	Wärtsilä
WinGD X62 connecting rod	WinGD

Technical Specifications

Model	Specification	Value	Unit
MAN 48/60CR connecting rod	Applicable engine bore	480	mm
MAN 48/60CR connecting rod	Engine type	Medium-speed four-stroke	—
Wärtsilä 46F connecting rod	Applicable engine bore	460	mm
Wärtsilä 46F connecting rod	Engine type	Medium-speed four-stroke	—
WinGD X62 connecting rod	Applicable engine bore	620	mm
WinGD X62 connecting rod	Engine type	Low-speed two-stroke crosshead	—

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Manufacture, material traceability, heat treatment, dimensional inspection and nondestructive testing must comply with the engine maker's approved drawings and applicable classification-society machinery rules. Material certificates are normally required; exact EN, ASTM or maker specifications vary by engine.
Class Approval	Connecting rods are normally accepted as part of the class-approved engine design rather than by standalone type approval. New or repaired parts may require maker documentation, material certificates, NDT records and survey acceptance by DNV, ABS, Lloyd's Register, Bureau Veritas or ClassNK.

Installation, Maintenance & Safety Information

Installation Notes	Confirm engine model, serial number, rod identification, mass group and mating parts. Check bearing clearances, alignment and journal condition. Use specified lubricants, calibrated hydraulic or torque tools, new locking parts and the maker's tightening sequence.
Maintenance Tips	Inspect for cracks, fretting, corrosion, distortion and overheating. Measure big-end and small-end bores, bearing clearances and bolt elongation. Perform magnetic-particle testing at maker-specified intervals and renew bearings, bushes and fasteners at prescribed limits.
Safety Notes	Stop and isolate the engine, engage turning-gear interlocks and prevent unintended rotation. Support the piston, crosshead and rod with certified lifting equipment. Connecting rods are heavy matched components; never reuse damaged fasteners or exceed maker tightening limits.