In all types of cranes, equipped with two set of motor reel (i.e. electric hoist), each reel is provided with two wire rope where in the two into a group were rooted in the grab balance rack ends support, another group of wire rope through the upper
beam and the lower cross beam of the pulley pulley, pulley set up consisting of, close combat unit effect of.
At the beginning of the operation, to support the rope grab lifting in the proper position, and then down to open and close the rope, then on the lower beam deadweight force fighting department following beam shaft as the center will open when the bucket of bucket, a touch block to two ear plates collide, namely the bucket open to a maximum. Bucket opening. upper crossbeam and a lower cross beam pulley pulley center distance is increased, then the support wire rope fall, will open the grab, fall in to grab the loose deposit above, and then close around the opening and closing of steel wire rope, the pulley and the lower cross beam on the central distance of the pulley is restored to its original position, so that finished capture material process.In the closed and fights the Ministry had been filled with material, finally enhance the open-close rope, the grab is also liftedby crane, moved to the unloading area,opening bucket unloading place capture material.
With a 20 cubic meter large capacity design, this grab bucket features a high-strength structure, excellent wear resistance and reliable mechanical operation. It requires no hydraulic power, resulting in low maintenance costs and high working efficiency, making it an ideal choice for bulk cargo handling operations.
| Models |
Volume (m³) |
Duty Type |
Material Specific Gravity (t/m³) |
Grabbing Capacity (t) |
Pulley Multiplier |
Number of Opening/Closing Ropes |
Number of Supporting Ropes |
Steel Wire Rope Diameter (mm) |
Pulley Diameter (mm) |
Opening/Closing Time (s) |
Grab Dead Weight (t) |
Rated Crane Capacity (t) |
Total Grab Height (mm) |
Bucket Length × Width × Height (mm) |
Maximum Opening Size (mm) |
| U1 |
1 |
Heavy Duty |
>1.8~1.9 |
1.8~1.9 |
5 |
2 |
2 |
Φ14 |
Φ350 |
14 |
2.065 |
5T |
2635 |
1850×1150×673 |
2544 |
| U2 |
1.5 |
Medium Duty |
>1~1.8 |
1.5~2.1 |
5 |
2 |
2 |
Φ14 |
Φ350 |
12.5 |
2.235 |
5T |
2765 |
2150×1250×745 |
2700 |
| U3 |
2.5 |
Light Duty |
>0.5~1 |
1.25~2.5 |
3 |
2 |
2 |
Φ14 |
Φ350 |
8 |
2.285 |
5T |
2985 |
2350×1500×927 |
3200 |
| U27 |
2 |
Medium Duty |
>1~1.2 |
2~2.4 |
5 |
2 |
2 |
Φ16 |
Φ400 |
12 |
2.5 |
5T |
2860 |
2150×1500×820 |
3000 |
| U21 |
2.5 |
Light Duty |
0.86 |
2.15 |
4 |
2 |
2 |
Φ16 |
Φ400 |
10.3 |
2.83 |
5T |
3350 |
2150×1500×920 |
3150 |
| U99 |
0.5 |
Heavy Duty |
>1.7~2.5 |
0.85~1.25 |
5 |
2 |
2 |
Φ16 |
Φ350 |
9.5 |
2.05 |
5T |
2276 |
1450×950×416 |
1800 |
| U100 |
0.5 |
Overload Duty |
>2.5~4 |
1.25~2 |
5 |
2 |
2 |
Φ16 |
Φ400 |
10 |
2.35 |
5T |
2450 |
1450×950×420 |
1850 |
| Z1 |
1 |
Heavy Duty |
>1.8~1.9 |
1.8~1.9 |
5 |
2 |
2 |
Φ16 |
Φ350 |
12.22 |
2.524 |
5T |
2708 |
1930×1050×798 |
2170 |
| Z15 |
1.5 |
Medium Duty |
>1~1.2 |
1.5~1.8 |
5 |
2 |
2 |
Φ16 |
Φ350 |
13 |
2.35 |
5T |
2710 |
2130×1250×830 |
2770 |
| Z25 |
2.5 |
Light Duty |
>0.6~1.0 |
1.5~2.5 |
4 |
2 |
2 |
Φ16 |
Φ350 |
10.3 |
2.493 |
5T |
2890 |
2330×1500×920 |
3150 |
| U4 |
2 |
Heavy Duty |
>1.8~2.9 |
3.6~5.8 |
5 |
2 |
2 |
Φ18 |
Φ500 |
15 |
3.898 |
10T |
3184 |
2410×1320×826 |
3070 |
| U5 |
3 |
Medium Duty |
>1~1.8 |
3~5.4 |
5 |
2 |
2 |
Φ18 |
Φ500 |
15 |
4.4 |
10T |
3301 |
2650×1550×900 |
3200 |
| U6 |
5 |
Light Duty |
>0.5~1 |
2.5~5 |
3 |
2 |
2 |
Φ18 |
Φ500 |
10 |
4.62 |
10T |
3549 |
2950×1900×1019 |
3800 |
| U23 |
2 |
Heavy Duty |
>2~3 |
4~6 |
5 |
2 |
2 |
Φ18 |
Φ500 |
11 |
4.63 |
10T |
3172 |
2400×1550×780 |
3400 |
| U25 |
3 |
Medium Duty |
>1~1.7 |
3~5.4 |
5 |
2 |
2 |
Φ18 |
Φ500 |
11 |
4.868 |
10T |
3172 |
2400×1748×780 |
3400 |
| Sz3 |
3 |
Medium Duty |
1.1~2.0 |
3.3~6 |
5 |
2 |
2 |
Φ19.5 |
Φ410 |
13.4 |
4.718 |
10T |
3250 |
2800×1684×1650 |
3200 |
| U7 |
3 |
Heavy Duty |
>1.8~2.9 |
5.4~8.7 |
5 |
2 |
2 |
Φ21.5 |
Φ610 |
15.3 |
6.3 |
15T |
3726 |
2616×1700×886 |
3326 |
| U8 |
4.5 |
Medium Duty |
>1~1.8 |
4.5~8.1 |
5 |
2 |
2 |
Φ21.5 |
Φ610 |
15.3 |
6.98 |
15T |
3946 |
2956×1800×1041 |
3756 |



