SR-300L Rough Terrain Crane

Crane Specification

Maximum rated lifting capacity30ton×3m
Boom length9.35m ― 30.5m (4 section)
Fly jib length7.9m ― 13.0m (2 section, offset 5°,25°,45°
Maximum rated lifting height31.2m (Boom)
44.8m (jib)
Hoisting line speed (winch up)Main winch: 125m / min. (at 4th layer)
Auxiliary winch: 116m / min. (at 3rd layer)
Hoisting hook speed (winch up)Main winch: (Parts of line; 9) : 13.8m / min. (at 4th layer)
Auxiliary winch: (Parts of line; 1) : 116m / min. (at 3rd layer)
Boom derricking angle0° ― 83°
Boom derricking time40s / 0° ― 83°
Boom extending speed9.35m ― 30.5m / 93s
Slewing speed2.9min-1
Tail slewing radius3,500mm

Equipment and Structure

Boom typeBox-shaped, 4-section hydraulically telescopic type
(Boom section 3 / 4 simultaneously operated)
Jib type2 sections (2nd section of draw-out type)
(offset angles 5°,25°and 45°)
Boom extension/ retraction equipmentTwo hydraulic cylinders and wire ropes used together
Boom derricking/lowering equipmentOne hydraulic cylinder of direct acting type with pressure compensated flow control valve
Winch system Main & Auxiliary winchesDriven by axial plunger type hoisting motor through planetary gear reduction.

Controlled independently by respective operating lever. Equipped with automatic brake.

Slewing equipmentBall bearing type

Hydraulic Equipment

Oil pump4 pumps, plunger and gear type
Hydraulic motorHoisting motor: Axial plunger type
Slewing motor: Axial plunger type
Control valveDouble acting with integral check and relief valves
CylinderDouble acting type
Oil reservoir capacity500L

Carrier Specification

Maximum traveling speed49km/h
Grade ability (tan θ)57% (computed at G.V.W. = 26990kg)
Minimum turning radius
(center of extreme outer tire)
8.2m (2 wheel steer)
4.9m (4 wheel steer)


ModelMitsubishi 6M60-TL
Type4 cycle, 6 cylinders, water cooled, direct injection turbo-charged
diesel engine with intercooling
Piston displacement7.545L
Max. power200kW at 2,600min-1
Max. torque785N・m at 1,400min-1