Sumitomo Excavator SH250-6 | 24.8 ton

Description

Sumitomo Excavator SH250-6 | 24.8 ton

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The Sumitomo SH250-6 is a highly efficient, 24.8-ton crawler excavator engineered to bridge the gap between heavy-duty performance and outstanding fuel economy. It is powered by a reliable Isuzu engine mated to Sumitomo’s signature “SIH:S+” hydraulic system to lower fuel consumption by up to 12% compared to earlier models.

Technical Specifications

The core specifications for the standard configuration (fitted with a 5.85 m boom and 3.00 m arm) are broken down below:

1. Engine & Power

• Make & Model: ISUZU GH-4HK1X (Tier III Compliant)

• Type: 4-cylinder, common-rail fuel injection with cooled EGR and turbocharger

• Rated Output: 132.1 kW (approx. 179.6 HP) at 2,000 rpm

• Displacement: 5.193 liters

• Maximum Torque: 622 Nm at 1,800 rpm

2. Operating Weight & Dimensions

• Standard Operating Weight: 24,800 kg (up to 25,400 kg depending on shoe/attachment configuration)

• Transport Length: 9.93 m

• Transport Width: 3.19 m (standard 600 mm shoe width)

• Transport Height: 3.02 m

• Ground Pressure: 49 kPa

3. Working Ranges & Force

• Bucket Capacity Range: 0.8 to 1.3 m³ (Standard: 1.1 m³ ISO heaped)

• Maximum Digging Depth: 6,900 mm (6.9 m)

• Maximum Horizontal Reach: 10,280 mm (10.28 m)

• Bucket Digging Force: 162 kN (reaches up to 174 kN with Auto Power Boost)

• Arm Digging Force: 120 kN (reaches up to 129 kN with Auto Power Boost)

4. Hydraulics & Performance

• Main Pump System: 2 variable displacement axial piston pumps with an integrated regulating system

• Max Hydraulic Pressure: 34.3 MPa (boosts to 36.8 MPa under high loads)

• Travel Speed: High: 5.5 km/h | Low: 3.5 km/h

• Swing Speed: 11.0 rpm

• Drawbar Pull: 201 kN

• Gradeability: 70% (35 circ)

5. Fluid Capacities

• Fuel Tank: 410 liters

• Hydraulic Reservoir: 147 liters (system total fluid is larger)

Core Technologies & Efficiency Features

• Spool Stroke Control (SSC): Automatically monitors and adjusts the control valve spool port flow based on operating conditions. This matches engine and hydraulic output seamlessly for a 4% faster cycle time in SP (Super Power) mode.

• Energy Saving Modes: Features Boom-down Energy Save (BES) and Auto Energy Save (AES), which drop the engine idle and pump speed during tasks that do not demand heavy oil flow.

• Auto Power Boost: Automatically engages when the excavator meets high digging resistance, providing a surge of hydraulic force for 8 seconds to clear obstacles.

• Easy Maintenance System (EMS): Specially treated brass bushings with solid lubricant and plated pins extend greasing intervals for joints up to 1,000 hours (and up to 250 hours for the bucket joint).

Engine

Model : ISUZU GH-4HK1X
Type : Water-cooled, 4-cycle diesel, 4-cylinder in line, high
pressure common rail system (electric control),
Turbocharger with air-cooled intercooler.
Rated output : 132.1 kW (179.6 PS) at 2,000 min-1(rpm)
Maximum torque : 622 N-m at 1,800 min-1(rpm
Piston displacement : 5.193 ltr
Bore and stroke : 115 mm x 125 mm
Starting system : 24 V electric motor starting
Alternator : 24 V, 50 A
Fuel tank : 410 ltr
Air filter : Double element

Hydraulic Pumps

Two variable displacement axial piston pumps provide power for
boom/arm/bucket, swing, and travel. One gear pump for pilot controls.
Maximum oil flow : 2 x 234 ltr/min
Pilot pump max. oil flow : 20 ltr/min

Hydraulic Motor

For travel: Two variable displacement axial piston motors
For swing: One fixed displacement axial piston motor

Working circuit pressure

Boom/arm/bucket : 34.3 MPa (350 kgf/cm2 )
Boom/arm/bucket : 36.8 MPa (375 kgf/cm2 ) with auto power-up
Swing circuit ” 28.9 MPa (295 kgf/cm2 )
Travel circuit : 34.3 MPa (350 kgf/cm2

Control valve

With boom/arm holding valve
One 4-spool valve for right track travel, bucket, boom and arm acceleration
One 5-spool valve for left track travel, auxiliary, swing, boom acceleration and arm

Oil filtration

Return filter : 6 microns
Pilot filter : 8 microns
Suction filter : 105 microns