Global Marine Engine Crankshaft Market Growth 2025-2031

The global Marine Engine Crankshaft market size is predicted to grow from US$ 841 million in 2025 to US$ 1111 million in 2031; it is expected to grow at a CAGR of 4.8% from 2025 to 2031.

A marine engine crankshaft is a key component in the powertrain of a marine propulsion system. It serves a similar function to crankshafts in other internal combustion engines, converting the reciprocating motion of pistons into rotational motion to drive the ship's propeller.

The marine engine crankshaft is a vital component in ship propulsion systems, converting the linear motion of engine pistons into rotational motion to drive the propeller or auxiliary equipment. As the global maritime industry undergoes technological advancements and adapts to stricter environmental regulations, the demand for more efficient, durable, and high-performance crankshafts is on the rise.

Based on manufacturing techniques and structural differences, marine crankshafts can be categorized into Marine Integral Crankshaft and Marine Assembled Crankshaft, each serving distinct applications with varying performance requirements and production complexities.Marine Integral Crankshaft is typically manufactured through a single forging process, where a solid block of high-strength alloy steel is forged and precisely machined to enhance its durability and resistance to wear. This type of crankshaft is commonly used in medium and high-speed diesel engines found in yachts, fishing vessels, offshore support vessels, and some mid-sized commercial ships. Its advantages include superior strength, excellent dynamic balance, and low maintenance requirements, ensuring long-term operational stability. However, the high cost of precision forging and machining, along with size limitations imposed by manufacturing constraints, makes integral crankshafts less viable for ultra-large low-speed marine engines.Marine Assembled Crankshaft, on the other hand, is primarily used in large low-speed marine engines, such as those in bulk carriers, oil tankers, and large container ships. It is manufactured by forging individual crank webs, main journals, and connecting rod journals separately and then assembling them using shrink-fitting, bolt connections, or welding techniques. The key advantage of an assembled crankshaft is its scalability, allowing for the production of larger, more powerful crankshafts while reducing the difficulty of machining single large components. Additionally, damaged sections can be replaced individually, lowering maintenance costs and extending service life. However, compared to integral crankshafts, assembled crankshafts require highly precise manufacturing and assembly processes to ensure structural integrity under heavy loads.

Key players in the global marine crankshaft market are concentrated in Japan, Germany, South Korea, and China. Additionally, with the International Maritime Organization (IMO) enforcing stricter emissions regulations (such as IMO 2020 low-sulfur fuel rules), there is a growing demand for crankshafts designed for cleaner and more efficient engines, driving innovations in alloy materials, surface treatments, and friction-reducing coatings.

LP Information, Inc. (LPI) ' newest research report, the “Marine Engine Crankshaft Industry Forecast” looks at past sales and reviews total world Marine Engine Crankshaft sales in 2024, providing a comprehensive analysis by region and market sector of projected Marine Engine Crankshaft sales for 2025 through 2031. With Marine Engine Crankshaft sales broken down by region, market sector and sub-sector, this report provides a detailed analysis in US$ millions of the world Marine Engine Crankshaft industry.

This Insight Report provides a comprehensive analysis of the global Marine Engine Crankshaft landscape and highlights key trends related to product segmentation, company formation, revenue, and market share, latest development, and M&A activity. This report also analyzes the strategies of leading global companies with a focus on Marine Engine Crankshaft portfolios and capabilities, market entry strategies, market positions, and geographic footprints, to better understand these firms’ unique position in an accelerating global Marine Engine Crankshaft market.

This Insight Report evaluates the key market trends, drivers, and affecting factors shaping the global outlook for Marine Engine Crankshaft and breaks down the forecast by Type, by Application, geography, and market size to highlight emerging pockets of opportunity. With a transparent methodology based on hundreds of bottom-up qualitative and quantitative market inputs, this study forecast offers a highly nuanced view of the current state and future trajectory in the global Marine Engine Crankshaft.

This report presents a comprehensive overview, market shares, and growth opportunities of Marine Engine Crankshaft market by product type, application, key manufacturers and key regions and countries.

Segmentation by Type:
Marine Integral Crankshaft
Marine Assembled Crankshaft

Segmentation by Application:
Small and Medium-Sized Ships
Large Ships

This report also splits the market by region:
Americas
United States
Canada
Mexico
Brazil
APAC
China
Japan
Korea
Southeast Asia
India
Australia
Europe
Germany
France
UK
Italy
Russia
Middle East & Africa
Egypt
South Africa
Israel
Turkey
GCC Countries

The below companies that are profiled have been selected based on inputs gathered from primary experts and analysing the company's coverage, product portfolio, its market penetration.
Kobe Steel
HD Hyundai Heavy Industries
Doosan Enerbility
Bharat Forge
NSI Crankshaft
Maschinenfabrik Alfing Kessler
Shanghai Electric Group
Tianrun Industry Technology
Hisea Heavy-Duty Machinery
Liaoning 518 Internal Combustion Engine Fittings
Dalian Huarui Heavy Industry Group

Key Questions Addressed in this Report

What is the 10-year outlook for the global Marine Engine Crankshaft market?

What factors are driving Marine Engine Crankshaft market growth, globally and by region?

Which technologies are poised for the fastest growth by market and region?

How do Marine Engine Crankshaft market opportunities vary by end market size?

How does Marine Engine Crankshaft break out by Type, by Application?

Please note: The report will take approximately 2 business days to prepare and deliver.