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3-cylinder diesel engine D1703 D1703-M-E3B for Kubota Construction Machinery Parts

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  • D1703

  • Kubota

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Product Overview: Kubota D1703 Series Industrial Diesel Engine

The Kubota D1703 is a highly versatile and reliable 3-cylinder diesel engine from the renowned "Super 03-M Series." Engineered for industrial applications, it combines compact design, durable power, and clean operation to serve as a trusted power source for a wide range of compact machinery across construction, agriculture, and industrial sectors.

1. Core Specifications & Model Comparison

The D1703 series offers multiple configurations to meet different power and global emission standards. Below is a comparison of key models.

Feature D1703-M-E3B D1703-M-DI-E4B D1703-M-DI-E2B
Rated Power / Speed 26.1 kW (35.0 HP) @ 2800 rpm 18.5 kW (24.8 HP) @ 2200 rpm 27.4 kW (36.7 HP) @ 2800 rpm
Max. Torque / Speed 104.3 Nm @ 1600 rpm 97.4 Nm @ 1500 rpm 113.0 Nm @ 1700 rpm
Combustion System Indirect Injection (E-TVCS) Direct Injection Direct Injection
Emission Compliance EPA/CARB Interim Tier 4, EU Stage IIIA EPA/CARB Tier 4, EU Stage V, India BS V EPA/CARB Tier 2, EU Stage IIIA
Aftertreatment Not required Not required Not required

Shared Platform Specifications:

  • Configuration: Vertical, water-cooled, 4-cycle diesel engine

  • Cylinders: 3

  • Displacement: 1.647 L

  • Bore x Stroke: 87.0 mm x 92.4 mm

  • Aspiration: Naturally aspirated

  • Dry Weight: Approx. 148 kg

  • Dimensions (LxWxH): Approx. 547 x 495 x 679 mm (excl. fan)

2. Primary Equipment & Applications

The D1703 engine is designed to power a diverse array of compact equipment, known for its adaptability and reliability.

  • Compact Construction Machinery: Frequently used as the power core for mini excavators and skid-steer loaders (e.g., compatible with Bobcat 325, 328 models).

  • Agricultural & Industrial Equipment: Ideal for powering pumps, generators, power-tillers, and various small construction machinery.

  • Versatile Industrial Power: Its robust design makes it suitable for multiple applications in manufacturing, retail, and energy sectors.

3. Core Technologies & Features

  1. Advanced E-TVCS Combustion System (for Indirect Injection Models): This Kubota-original Three Vortex Combustion System optimizes airflow and fuel mixing in the swirl pre-combustion chamber. The result is cleaner combustion with lower particulate matter (PM) levels, significantly reduced engine noise, and minimized vibration for smoother operation.

  2. Durable Engine Design for High Power Density: The cylinder block incorporates Kubota's proprietary casting technology, featuring cooling water passages between the cylinder bores. This unique design effectively manages the heat load from high power density, ensuring superior endurance, reliable performance, and a long service life.

  3. Operator and Service-Friendly Design: The engine is built for ease of maintenance, featuring single-side serviceability where key maintenance points are accessible from one side. It also includes options like a side power take-off (PTO) for direct hydraulic pump mounting and a low fan position for flexible machine integration.

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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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