China Machinery International Trading Co., Ltd. is one of the leading manufacturers and suppliers of 70 ton crane in China. With abundant experience, we warmly welcome you to buy cheap 70 ton crane made in China here from our factory. For price consultation, contact us.
Hydraulic System for Precise Control
5-section main boom with large U-shaped cross-section (100T class), fully extended length 50.5 m;standard 17.5 m jib, optional 9.5 m extension, maximum lifting height up to 78 m
Electronically controlled dual-swing, three-stage reduction system, combined with a large-displacement hydraulic pump;smooth start/stop without impact, torque increased by 35%, load capacity improved by 10%,minimum stable slewing speed 0.08°/s, ensuring powerful slewing for long-radius operations
H-type low-position outriggers, span 8 × 6.53 m;standard 20.5 t counterweight, optional 2 × 2.5 t side counterweights (80T universal)
Max lifting moment (basic boom): 3469 kN·m (59 t × 6 m)
Max lifting capacity with full boom: 16 t, working radius up to 44 m
Advanced Hydraulic & Control System
New electro-proportional dual-pump intelligent flow distribution system
Independent luffing + combined boom extension, improving compound operation efficiency by over 50%
Variable displacement piston motor winch, noise reduced by 7 dB,minimum stable hoisting speed 0.8 m/min
Innovative automatic lowering compensation technology, ensuring smoother luffing-down operations
Human-Centered Operation System
Brand-new "Lingzhi" dual-cabin design, equipped with upgraded ergonomic seats
(150 mm sliding adjustment, 140° reclining angle)
20% larger upper cabin operating space, with sliding track doors for easy access
Sliding step + foldable front pedal for smooth entry/exit
New interior design with multi-channel 3D airflow system, panoramic sunroof, adjustable seats, and softened trim materials
Equipped with electric wipers and standard winch monitoring system, ensuring more comfortable and easy operation

Powerful Chassis Performance
Equipped with Yuchai K09 high-torque engine + 12-speed synchronizer gearbox
(optional Weichai WP10H engine + 10-speed gearbox)
Heavy-duty axle design, max travel speed 80 km/h, max gradeability 45%
7-inch HD LCD instrument panel in chassis cab, with co-driver seat for improved usability
Second-generation heavy-duty suspension system, allowing transportation with 20.5 t counterweight without unloading for short distances
Tire configuration: Front 4 × 385/95R25 + Rear 8 × 325/95R24,
enabling counterweight transport while leaving space for outrigger pads
450 L large-capacity fuel tank, increasing endurance by 30%






Technical Specification
| Model | STC800C5-8 | |||
|
CATEGORY |
ITEM |
UNIT |
VALUE |
|
|
CAPACITY |
Max.lifting capacity |
t |
80 |
|
|
WEIGHT |
Grossweight |
kg |
46000 |
|
|
POWER |
Engine model |
- |
DF CUMMINS ISLe975 30 (Euro III) |
|
|
Max. engine power |
kW/rpm |
275/2100 |
||
|
Max. engine torque |
N·m/rpm |
1550/1200 |
||
|
DIMENSIONS |
Overall length |
mm |
35000 |
|
|
Overall width |
mm |
2800 |
||
|
Overall height |
mm |
3010 |
||
|
TRAVEL |
Max. travel speed |
km/h |
90 |
|
|
Steering radius |
Min.steering radius |
m |
12 |
|
|
Min.steering radius of boom tip |
m |
15.4 |
||
|
Wheel formula |
- |
8×4×4 |
||
|
Min.ground clearance |
mm |
38 |
||
|
Approach angle |
° |
17.2 |
||
|
Departure angle |
° |
12.9 |
||
|
Max.gradability |
- |
44% |
||
|
Fuel consumption per100km |
L |
45 |
||
|
MAIN PERFORMANCE |
Working temperature range |
℃ |
-25~+45 |
|
|
Min.rated lifting radius |
m |
3 |
||
|
Tail swing radius |
m |
4.238 |
||
|
Boom sections (Qty.) |
- |
5 |
||
|
Boom shape |
- |
U shape |
||
|
Max. lifting moment |
Basic boom |
kN·m |
2940 |
|
|
Full-extension boom |
kN·m |
1685.5 |
||
|
Full-extension boom +jib |
kN·m |
608.5 |
||
|
Boom length |
Basic boom |
m |
12.9 |
|
|
Full-extension boom |
m |
50.5 |
||
|
Full-extension boom +jib |
m |
66.5 |
||
|
Full-extension boom +boom extension + jib |
m |
76 |
||
|
Max. lifting height |
Basic boom |
m |
13.4 |
|
|
Full-extension boom |
m |
51 |
||
|
Full-extension boom +jib |
m |
66.5 |
||
|
Full-extension boom +boom extension + jib |
m |
76 |
||
|
Outrigger span (Longitudinal × Transverse) |
m |
6.48×8 |
||
|
Jib offset |
° |
0,15,30 |
||
|
AIRCONDITIONER |
In operator's cab |
- |
Cooling |
|
|
In driver's cab |
- |
Heating &cooling |
||
Axle Load
|
Axle |
1 |
2 |
3 |
4 |
Grossweight |
|
Axle load/t |
10 |
10 |
13 |
13 |
46 |
|
Remark |
Main hook tied on the frame tail,aux. hook block placed in the bracket,with outrigger floats,spare tire,one person in driver's cab and full of water and oil. |
||||
Hook
|
Rated load |
Number of sheaves |
Rope rate |
Hook weight/kg |
|
60 |
6 |
12 |
550 |
|
6 |
0 |
1 |
100 |
Operations
|
Item |
Max.single rope lifting speed |
Rope diameter/length |
Max.single line pull |
|
|
Main winch |
130m/min |
18mm/260m |
6.6T |
|
|
Auxiliary winch |
130m/min |
18mm/145m |
6.6T |
|
|
Slewing speed |
0-1.7r/mim |
|||
|
Full/lifting up/down time of boom |
60s/90s |
|||
|
Full extension/retraction time of boom |
100s/110s |
|||
|
Outrigger jack |
Retraction |
35s |
||
|
Extension |
35s |
|||
|
Outrigger beam |
Retraction |
20s |
||
|
Extension |
25s |
|||
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