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B5.9-C Diesel Engine 6B5.9-C for Cummins Excavator Loader Bulldozer Grader Tractor Truck

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  • B5.9-C

  • Cummins

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Product Description: Cummins B5.9-C Diesel Engine

Overview: Unmatched Reliability for Demanding Work
The Cummins B5.9-C is a cornerstone of the legendary B-Series engine family, offering robust, mechanical simplicity and proven durability for heavy-duty industrial applications. This inline 6-cylinder, 5.9-liter diesel engine is engineered for exceptional longevity and low total cost of ownership. With a power output ranging from 80 to 173 horsepower (60-129 kW), it delivers the dependable power needed to tackle the toughest jobs across multiple sectors, from construction sites to marine environments.

Technical Specifications at a Glance

Feature Specification
Engine Model Cummins B5.9-C / B5.9 Series
Configuration Inline, 6 Cylinder
Displacement 5.9 Liters
Power Output 80 - 173 HP (60 - 129 kW)
Max. Torque (B5.9-173 Model) 786 Nm
Aspiration Naturally Aspirated (NA), Turbocharged (T), or Turbocharged & Aftercooled (TA/TAA)
Fuel System Inline / Rotary Mechanical Injection Pump
Emissions Compliance Tier 2 / BS III CEV
Weight Approx. 452 kg

Primary Equipment Applications

The B5.9-C engine is renowned for its versatility, serving as a trusted power source for a wide array of equipment:

  • Construction Machinery: Excavators, loaders, bulldozers, graders, and compactors.

  • Industrial Power Units: Pumps, compressors, and generator sets for oil & gas and general industry.

  • Marine Applications: Auxiliary power and propulsion for commercial and workboats.

  • Agricultural Equipment: Tractors and other high-duty-cycle farm machinery.

Core Technologies & Design Advantages

  1. Legendary Unitized Design: The B5.9 engine platform utilizes an integrated, unitized design that incorporates approximately 40% fewer parts than traditional diesel engines. This simplicity drastically reduces potential failure points, enhances overall reliability, and simplifies maintenance, contributing to a famously long service life.

  2. Heavy-Duty Engine Architecture: Built for endurance, key components include a forged steel crankshaft and camshaft for superior strength, and a robust parent-bore cylinder block engineered to handle high combustion pressuresPlateau-honed cylinder bores ensure optimal oil retention and near-zero oil consumption over time.

  3. Efficient Air & Fuel Management: Equipped with Holset wastegated turbochargers (on turbo models) for optimized performance and improved torque response. The reliable mechanical inline or rotary fuel injection pump provides precise fuel delivery and is known for its durability and ease of service.

  4. Operational Versatility: The engine platform is offered in multiple aspiration configurations (NA, T, TA) to suit specific power and application needs. Optional features like resistive grid heating enhance cold-start capability in harsh environments.

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KELUO is a company of machinery, engines, used equipment and spare parts founded by Hanhan in combination with HANJIU, Elephant in the industry.
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