Kobelco SK135SR

Key Features:

  • High productivity resulting from lower fuel consumption
  • New ECO mode greatly reduces fuel consumption
  • Low-maintenance design reduces operating costs
  • iNDr technology reduces operational noise
  • New environmentally-friendly engine and energy-efficient hydraulic circuit improve fuel efficiency


The SK135SR has a compact design which allows for continuous 180 degree dig, swing, and load operations with just 3.5m of working space. It has various systems which makes operating easy and accurate. This machine is energy efficient in ECO-mode reducing fuel consumption by 21%. Includes Kobelco's iNDr Cooling System for ultimate low noise and dust reduction.

Equipment Information

Download Spec Sheet (pdf)


Type:Water-cooled, 4 cycle 4 cylinder direct injection type diesel engine with intercooler turbo-charger
No. of Cylinders:4
Bore and Stroke:94 mm x 120 mm
Displacement:3,331 mL
Rated Power Output:74 kW/2,000 min-1 (ISO 14396), 69.2 kW/2,000 min-1 (ISO 9249)
Max. Torque:Net 375 N•m/1,600 min-1 (ISO 14396: Without Fan), 359 N•m/1,600 min-1 (ISO 9249)

Hydraulic System (Pump)

Pump Type:Tandem variable displacement piston pumps
Pump Max Flow at Rated Engine Speed:2 x 130 L/min, 1 x 20 L/min

Hydraulic System (Relief Valve Setting)

Boom, Arm and Bucket:37.8 MPa
Travel Circuit:34.3 MPa
Swing Circuit:28 MPa
Pilot Control Circuit:5 MPa
Pilot Control Pump:Gear type
Main Control Valve:8-spool
Oil Cooler:Air cooled type

Swing System

Swing Motor:Axial piston motor
Swing Brake:Hydraulic
Swing Speed:11 min-1 (rpm)
Tail Swing Radius1,490 mm
Min. Front Swing Radius2,000 mm

Travel System

Travel Motors:2x axial-piston, two-step motors
Travel Brakes:Hydraulic brake per motor
Parking Brakes:Oil disc brake per motor
Travel Shoes44 each side
Travel Speed:5.6/3.4 km/h
Draw Bar Pull:138 kN (14,100 kgf) (ISO 7464)
Gradeability70% (35 deg)

Cab & Control

Cab:All-weather, sound-suppressed steel cab mounted on silicon-sealed viscous mounts and equipped with a heavy, insulated floor mat
Control:2x hand levers & 2x foot pedals for travel, 2x hand levers for excavating and swing, electric rotary-type engine throttle

Boom, Arm & Bucket

Boom Cylinders:100 mm x 1,092 mm
Arm Cylinder:115 mm x 1,120 mm
Bucket Cylinder:95 mm x 903 mm