Maeda MC305C-3 - Principle Specifications List

Section 3 – PRINCIPLE SPECIFICATIONS LIST Mini-Crawler Crane M A E D A
3-4 3/2019 MC305C-3
PRINCIPLE SPECIFICATIONS LIST
Standard and Electric Motor Option Specifications
System / Item
MC305C-3
Standard
MC305C-3
Electric motor option
Mass and
dimensions
Machine mass
3900 kg
4040 kg
Overall length  width  height
4195mm x 1280mm x 1695mm
Distance between idler and sprocket
1750mm
Track gauge
980mm
Track width
300mm
Capacity
Max. rated total load  working radius
2.98t x 2.5m
Max. working radius
12.16m x 0.26t
Max. lifting height (on the ground)
12.52m
Max. lifting height (underground)
-16.09m (4 falls)
Winch system
Method
Swash plate axial piston motor, planetary gear deceleration,
friction plate brake
Winding speed (4 layers, 4 falls)
13.5 m/min
9.125 m/min
Hoisting cable
IWRC 6 x WS (26) 8mm x 73m
Boom telescoping
system
Method
Sequentially telescoping hydraulic cylinder (3 pieces) +
Sheave-embedded wire cable expansion device (1 piece),
(With a hydraulic automatic locking device)
Boom type
Pentagonal section, hydraulic automatic extension,
5-stage boom (Stage 2/3: Sequentially telescoping,
Stage 4/5: Simultaneous telescoping)
Boom length
3.695m – 5.945m – 8.145m – 10.315m – 12.485m
Boom telescoping stroke/time
8.79m/26sec
8.79 m/39.6 sec
Derrick system
Method
Direct push-type hydraulic double-acting cylinder (2 pieces),
(With a hydraulic automatic locking device)
Boom angle/ time
0 to 80 deg./14.5sec
0 to 80 deg./19.9 sec
Slewing system
Method
Slew bearing, hydraulic motor drive,
Reduction gear: Worm + Reduction spur gear,
Brake: Worm-selflock
Slewing angle/ speed
360 deg. (continuous)/
25sec (2.4min
-1
)
360 deg. (continuous)/
36.7 sec (1.6 min
-1
)
Outrigger system
Method
Extension/ground: Direct push-type hydraulic cylinder
(With a hydraulic automatic locking device)
Overall width of extended outriggers
(Lateral) 5171mm x (Front) 4809mm x (Rear) 4706mm
Travelling system
Method
Hydraulic two-speed motor drive, Variable speed, Built-in brake
Travel speed
Forward/backward: 0 – 2.8km/h
Gradeability
23 deg.
Ground pressure
37.3kPa {0.38kgf/cm
2
}
38.6 kPa {0.39 kgf/cm
2
}
Hydraulic system
Hydraulic pump
Double-throw variable piston
pump (13cc/rev x 2)
Double-throw variable piston
pump (8.6 cc/rev x 2)
Rated pressure
Travelling: 20.6MPa {210kgf/cm
2
}
Crane high-pressure relief: 20.1MPa {205kgf/cm
2
}
Crane low-pressure relief: 4.41 to 6.37MPa {45 to 65kgf/cm
2
}
Hydraulic oil tank capacity
56L
Engine
Model
Yanmar 3TNV80F
Type
Vertical in-line 3-cylinder, Water cooled, 4-cycle (special vortex)
Displacement
1.226L (1226cc)
Rated output (continuous)
20.38hp SAE/2500min
-1
(15.2kW/2500min
-1
{20.7PS/2500rpm
-1
})
Fuel tank capacity
Diesel/ 40L