Liebherr D9512 A7 engine for construction equipment

The Liebherr D9512 A7 is a renowned V12 diesel engine. As part of Liebherr’s premium power platform, it delivers exceptional performance in heavy-duty mining machinery, large-scale construction equipment, and high-output industrial power generation. The D9512 series is distinguished by its high power density, robust construction, and outstanding reliability in extreme operating environments.

Engine Configuration: V12, 4-stroke, 24.24-liter displacement

Cooling System: High-efficiency water cooling (large-circuit design to meet temperature control requirements under high loads)

Air Intake System: Turbocharged and intercooled (optimized boost management ensuring constant power output even at high altitudes)

Rated Power: Approx. 600 – 750 kW (800 – 1000 hp) @ 1800 – 1900 rpm (depending on specific application and emissions calibration)

Fuel System: Liebherr common-rail fuel injection system featuring high-pressure, high-precision injection control, balancing performance with environmental compliance

Nominal Dimensions:

Length: Approx. 1,600 mm – 1,700 mm

Width: Approx. 1,200 mm – 1,300 mm

Height: Approx. 1,300 mm – 1,400 mm

Weight:

Dry Weight: Approx. 2,200 kg – 2,400 kg (depending on specific configuration, attachments, and flywheel housing specifications)

Key Features:

Excellent Power-to-Weight Ratio: The V12 configuration ensures top-tier power output within a compact installation footprint, making it an ideal choice for heavy-duty engineering equipment.

High Reliability: Critical components (such as pistons and cylinder heads) utilize premium materials and manufacturing processes, ensuring an exceptional B10 service life even during continuous 24-hour high-load mining operations. Easy-to-Maintain Design: Liebherr’s modular design philosophy facilitates the servicing of key components, effectively minimizing unplanned downtime.

Key Applications: Liebherr large excavators (e.g., R984C models), heavy-duty mining trucks, and large industrial generator sets.

Guangzhou Jianming Machinery Equipment Co., Ltd.
With 20 years of solid practical experience, we are experts in the field of machinery power systems and components.

We began as a small machinery repair shop. Over the past two decades, we have accumulated a wealth of successful global case studies and maintenance expertise. Drawing on our frontline experience in solving complex mechanical issues, we have earned widespread acclaim and grown into a comprehensive enterprise employing over 200 professionals.

We deeply understand the challenges equipment faces under extreme conditions and possess extensive practical experience and expertise in the following areas:

Heavy Machinery Power Upgrades & Retrofitting: We provide customized engine repair and replacement solutions for large-scale construction and mining machinery. We are proficient in working with top-tier power platforms, including Liebherr systems.

Mining & Industrial Equipment Maintenance: We offer professional power optimization and fault diagnosis strategies to ensure continuous operation under heavy-load conditions.

Agricultural & Irrigation Power Systems: We provide power unit upgrades and comprehensive troubleshooting services for various agricultural machines and irrigation equipment.

Leveraging our extensive technical experience, we are also a robust supplier of spare parts:

Comprehensive Machinery Parts Supply: We offer a wide, carefully curated range of heavy machinery parts—including fuel systems, turbochargers, cylinder head assemblies, piston assemblies, engine overhaul kits, and electronic control modules—to meet all your one-stop procurement needs.

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