Engine Bedplate Parts - Main Engine and Propulsion

Engine bedplate parts form the rigid foundation of a marine main engine, supporting the crankshaft, main bearings and structural frame. They maintain shaft alignment and transmit combustion and propulsion loads to the vessel's foundation.

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

Last updated: October 11, 2026

Product Information

Product Name	Engine Bedplate Parts
Product Category	Main Engine and Propulsion
Product Reference	321
Brands / Manufacturers	MAN Energy Solutions, WinGD, Mitsubishi Heavy Industries
Unit of Measure	Piece or Set

Key Features

Key Feature
1. High structural rigidity for crankshaft support
2. Precision-machined main-bearing seating surfaces
3. Designed for accurate crankshaft and shaft-line alignment
4. Heavy-duty welded, forged or cast construction depending on engine design
5. Engine-model and serial-number-specific dimensions

Applications of Engine Bedplate Parts

Application
1. Low-speed two-stroke marine main engines
2. Main-bearing and crankshaft support assemblies
3. Main-engine overhaul, damage repair and bedplate restoration

Models & Manufacturers

Model	Manufacturer
MAN B&W S60ME-C10.5	MAN Energy Solutions
WinGD X52	Winterthur Gas & Diesel Ltd.
Wärtsilä RT-flex50	Winterthur Gas & Diesel Ltd.
UEC60LSE	Mitsubishi Heavy Industries

Technical Specifications

Model	Specification	Value	Unit
MAN B&W S60ME-C10.5	Engine cylinder bore	600	mm
WinGD X52	Engine cylinder bore	520	mm
Wärtsilä RT-flex50	Engine cylinder bore	500	mm
UEC60LSE	Engine cylinder bore	600	mm
All models	Part dimensions and tolerances	According to OEM drawing and engine serial number	—

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, welding, machining and inspection must follow the engine OEM specification and applicable class rules. Material certificates are commonly supplied to EN 10204 3.1 or 3.2 when required. Welding procedures may be qualified to ISO 15614.
Class Approval	Acceptance is normally subject to the vessel's classification society and survey scope. Applicable societies may include DNV, ABS, Lloyd's Register, Bureau Veritas and ClassNK; approval or certification must be confirmed for the specific engine, repair and vessel.

Installation, Maintenance & Safety Information

Installation Notes	Confirm engine type, serial number and OEM drawing before supply. Check foundation condition, mating surfaces, main-bearing saddle geometry, crankshaft alignment, chock condition and specified bolt or tie-rod tightening procedure. Final alignment and clearances must follow the engine manual and class requirements.
Maintenance Tips	Inspect for cracks, fretting, corrosion, loose fasteners, bearing-saddle distortion and lubricating-oil leakage. Record crankshaft deflections and main-bearing clearances at OEM intervals. Use approved nondestructive testing and restore damaged surfaces only by an OEM- or class-accepted repair procedure.
Safety Notes	Isolate the engine, engage turning-gear interlocks and secure the crankshaft before work. Bedplate components are extremely heavy; use certified lifting points and equipment. Do not weld, flame-straighten or machine structural areas without approved engineering instructions and required class attendance.