المحرك Komatsu 4D105

Komatsu 4D105 Engine: A classic, reliable 4-cylinder diesel engine widely utilized in Komatsu’s mid-sized construction and industrial machinery. Known for its mechanical simplicity and durable architecture, the 4D105 series has long been favored for its ease of maintenance and ability to perform consistently in demanding work environments.

Engine Configuration: Inline 4-cylinder, 4-stroke, 4.2L–4.5L displacement (varies by variant)

Cooling System: Liquid-cooled

Rated Power: Approx. 55 – 85 kW (74 – 114 hp) @ 2200 – 2400 rpm

Fuel System: Mechanical direct injection

Dimensions: Standard compact industrial footprint

Key Advantage: High durability and parts longevity; its mechanical design allows for straightforward field repair without the need for complex diagnostic software.

Primary Applications: Komatsu excavators (e.g., PC100/120-1/2/3 series), bulldozers, small loaders, and forklift power units.

Guangzhou Jianming Machinery Equipment Co., Ltd.
With 20 years of solid practical experience, we are experts specializing in mechanical power and spare parts.

We started as a small mechanical repair shop. Over the past 20 years, we have accumulated extensive successful practice cases and maintenance experience worldwide. This first-line experience in solving complex mechanical problems has earned us widespread acclaim globally and propelled our growth into a comprehensive enterprise with over 200 professionals.

We deeply understand the difficulties faced by equipment under extreme conditions and possess rich practical experience and professional skills in the following areas:

Heavy Machinery Power Upgrades & Retrofitting: Providing custom engine retrofitting and replacement solutions for excavators, bulldozers, loaders, and other heavy equipment. We are highly proficient in mainstream power systems, including Komatsu, Caterpillar, Cummins, Isuzu, Perkins, Deutz, and Volvo.

Mining Equipment Maintenance & Optimization: Offering professional repair, maintenance, and power optimization strategies specifically designed for heavy mining equipment operating under high-load conditions.

Agricultural & Irrigation System Solutions: Assisting farms in efficiently designing and assembling irrigation systems, as well as troubleshooting and upgrading power units for various agricultural machinery.

Leveraging this wealth of technical experience, we are also a strong supplier of spare parts:

Comprehensive Mechanical Parts Supply: Because we understand repair, we know the importance of quality. We provide a complete range of carefully selected parts for excavators and heavy machinery, covering hydraulic systems, fuel systems, internal engine components, and electrical systems, fully meeting your one-stop procurement needs.

Our rich practical experience and comprehensive supply chain system are our most valuable assets. Whether you are facing complex mechanical challenges or need reliable spare parts, Jianming Machinery has the expertise to help you succeed!