Piston Rods - Main Engine and Propulsion

A piston rod connects the piston to the crosshead in large low-speed marine propulsion engines, transmitting combustion force while maintaining alignment. It passes through the piston-rod stuffing box and is manufactured to engine-specific OEM dimensions and tolerances.

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

Last updated: October 11, 2026

Product Information

Product Name	Piston Rods
Product Category	Main Engine and Propulsion
Product Reference	5
Brands / Manufacturers	MAN Energy Solutions, WinGD, Japan Engine Corporation
Unit of Measure	Piece

Key Features

Key Feature
1. Forged high-strength alloy-steel construction
2. Precision-machined bearing and connection surfaces
3. Hardened or coated stuffing-box running surface
4. Engine-specific threads, flanges and oil passages
5. Designed for high cyclic, thermal and compressive loads

Applications of Piston Rods

Application
1. Low-speed two-stroke marine main propulsion engines
2. Crosshead diesel and dual-fuel engines
3. Main-engine piston and crosshead overhaul

Models & Manufacturers

Model	Manufacturer
MAN B&W S60ME-C series piston rod	MAN Energy Solutions
WinGD X62 series piston rod	WinGD
UEC60LSE-Eco series piston rod	Japan Engine Corporation

Technical Specifications

Model	Specification	Value	Unit
MAN B&W S60ME-C series piston rod	Compatible engine architecture	Low-speed two-stroke crosshead engine	—
WinGD X62 series piston rod	Compatible engine architecture	Low-speed two-stroke crosshead engine	—
UEC60LSE-Eco series piston rod	Compatible engine architecture	Electronically controlled low-speed two-stroke crosshead engine	—
Marine crosshead-engine piston rod	Typical base material	Forged alloy steel according to OEM drawing	—

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 and inspection are governed primarily by the engine OEM drawing and specification. Material certificates may be supplied to EN 10204 Type 3.1 or 3.2 when required. Dimensional inspection, hardness testing and non-destructive examination requirements depend on the OEM and class-approved repair procedure.
Class Approval	For classed vessels, replacement or reconditioned piston rods may require material traceability, NDT reports and acceptance by the vessel's classification society, such as DNV, ABS, Lloyd's Register, Bureau Veritas or ClassNK. Requirements depend on engine criticality, repair scope and class rules.

Installation, Maintenance & Safety Information

Installation Notes	Confirm the exact engine type, serial number, cylinder position and OEM drawing revision. Check straightness, dimensions, threads, flange faces and oil passages before installation. Use specified tightening tools, locking arrangements, clearances and alignment procedures.
Maintenance Tips	Inspect the stuffing-box running surface for scoring, corrosion and wear. Check rod straightness, threads, flange faces and oil passages during overhaul. Perform dye-penetrant, magnetic-particle or ultrasonic examination as specified by the OEM, and record dimensional readings.
Safety Notes	Isolate starting air, fuel, hydraulic power and turning gear before work. Secure the piston and rod with certified lifting equipment. Piston assemblies are extremely heavy; follow approved lifting plans, confined-space procedures and OEM tightening instructions.