Mini-excavator SK39SR-7

crawlerdieselconstruction

Overview
The SK39SR-7 is a compact mini excavator equipped with a YANMAR 3TNV88 diesel engine compliant with EU Stage V. It is designed for tight-space operation while delivering reliable digging and travel performance.

Product specifications SK39SR-7
General
Engine rated power: 18.9 kW / 2,400 min-1 (ISO14396)
Bucket capacity: 0.10 m3
Fuel tank: 42.0 L
Displacement: 1.642 ml

Engine
Model: YANMAR 3TNV88
Type: Four-cycle, water-cooled, direct injection diesel engine, EU Stage V compliant
Fuel tank capacity: 42.0 L
Rated power output: 18.9 kW / 2,400 min-1 (ISO14396)

Digging force
Bucket digging force (Standard): 32.2 kN
Arm crowding force (Standard): 22.4 kN
Arm crowding force (Long): 19.5 kN
Standard arm length: 1.37 m
Long arm length: 1.67 m

Hydraulic system
Type: Two variable displacement axial piston pumps + one gear pump + pilot pump
Max. discharge flow: 2 x 38.4 L/min, 1 x 19.2 L/min, 1 x 10.8 L/min
Relief valve setting: 23.0 MPa (boom, arm and bucket)
Hydraulic oil capacity: 20.4 L (tank), 44.8 L (system)

Travel performance
Travel motors: Two variable displacement piston motors
Travel shoes: 88 each side
Travel speed: 4.4/2.5 km/h (rubber shoe), 4.3/2.4 km/h (steel shoe)
Swing speed: 8.2 min-1
Drawbar pulling force: 38.2 kN (Cab), 38.3 kN (Canopy) (SAE)
Gradeability: 58% (30°)

Technical specifications

• Model: SK39SR-7
• Type: Mini excavator
• Engine model: YANMAR 3TNV88
• Engine rated power: 18.9 kW / 2,400 min-1 (ISO14396)
• Bucket capacity: 0.10 m3
• Fuel tank capacity: 42.0 L
• Engine displacement: 1.642 ml
• Bucket digging force (Standard): 32.2 kN
• Arm crowding force (Standard): 22.4 kN
• Arm crowding force (Long): 19.5 kN
• Standard arm length: 1.37 m
• Long arm length: 1.67 m
• Hydraulic system: Two variable displacement axial piston pumps + one gear pump + pilot pump
• Hydraulic max. discharge flow: 2 x 38.4, 1 x 19.2 L/min, 1 x 10.8 L/min
• Relief valve setting: 23.0 MPa (boom, arm and bucket)
• Hydraulic oil tank: 20.4 L tank oil level, 44.8 L hydraulic system
• Travel motors: Two variable displacement piston motors
• Travel shoes: 88 each side
• Travel speed: 4.4/2.5 km/h (rubber shoe), 4.3/2.4 km/h (steel shoe)
• Swing speed: 8.2 min-1
• Drawbar pulling force: 38.2 kN (Cab), 38.3 kN (Canopy) (SAE)
• Gradeability: 58% (30°)