Double girder wire rope hoists consist of two parallel girders that provide a robust framework for the hoist, allowing it to handle substantial loads with enhanced stability and efficiency.
Superior Stability & High Capacity: The "crab unit" configuration places the hoisting mechanism between two girders, offering better load distribution ideal for heavy loads from 3.2 tons to 100 tons.
True Vertical Lift (Zero Hook Drift): Utilizes a double reeving system to ensure the hook rises perfectly vertically without lateral movement, critical for precise positioning.
Maximized Hook Height: The top-running design pulls the hook up between the girders, significantly increasing available headroom.
Heavy-Duty Performance: Designed for high duty cycles (ISO M4/M5), featuring high-performance motors with integrated brakes and high-tensile galvanized wire rope.
Advanced Control Options: Available with dual-speed lifting and Variable Frequency Drive (VFD) for smooth operation and minimal load sway.
Common Applications
Manufacturing: Lifting heavy machinery and materials.
Construction: Moving large structural components.
Warehousing: Efficient loading/unloading of heavy goods.
How to Select the Right Double Girder Hoist?
Rail Gauge: Confirm the exact distance between the two main girders to ensure the crab unit fits your crane bridge.
Lifting Height: Specify the exact vertical distance required, as double girder hoists offer higher lifting heights.
Duty Cycle: For continuous operations (e.g., 24/7 production), consult our engineering team for M6/M7 class customization.
WHDD Series Technical Data
Item No.
Capacity
Working Group
Rope Reeving
Lifting Speed
Lifting Motor
Travel Speed
Travel Motor
Wheel Dia. (D)
Hmin
A
W
Rail Gauge
Lifting Height
Product Code
S
(t)
(m/min)
(kw)
(m/min)
(kw)
(mm)
(mm)
(mm)
(mm)
(mm)
(m)
WHD-D2
3.2
M5
4/1
5/0.8
3.2/0.45
0 - 20
2*0.37
125
350
477
65
1200 - 2000
6 - 15
240402032
WHD-D3
5
M5
4/1
5/0.8
6.1/1
0 - 20
2*0.37
125
350
595
65
1200 - 2000
6 - 15
240403050
WHD-D4
10
M5
4/1
5/0.8
9.5/1.5
0 - 20
2*0.55
125
500
619
65
1400 - 2000
6 - 15
240404100
WHD-D4-2
16
M5
4/1
4/0.66
16/2.6
0 - 20
2*0.75
160
600
755
75
1400 - 2600
6 - 18
240404162
20
M4
4/1
4/0.66
16/2.6
0 - 20
2*0.75
160
600
755
75
1400 - 2600
6 - 18
240404202
WHD-D5
20
M5
4/1
3.4/0.53
16/2.6
0 - 20
2*1.1
200
700
817
80
1400 - 2600
6 - 18
240405200
25
M4
4/1
3.4/0.53
16/2.6
0 - 20
2*1.1
200
700
817
80
1400 - 2600
10 - 20
240405250
32
M5
12/2
2.3/0.4
16/2.6
0 - 20
2*1.1
200
1000
867
80
2000 - 3000
6 - 12
240405320
WHD-D5-2
40
M5
8/2D
3.4/0.53
16/2.6
0 - 20
2*1.5
250
1000
1100
85
1700 - 3400
6 - 18
240405402
50
M5
10/2D
2.7/0.4
16/2.6
0 - 20
2*1.5
250
1300
1150
85
2000 - 3400
7 - 14.5
240405502
WHD-D6
32
M5
4/1
0.8-4.9
38
0 - 20
2*1.5
250
1000
1020
85
1700 - 3000
6 - 20
240406320
40
M4
4/1
0.8-4.9
38
0 - 20
2*1.5
250
1000
1020
85
1700 - 3000
6 - 20
240406400
50
M5
12/2
0.5-3.3
38
0 - 20
2*2.2
315
1500
1128
90
2000 - 3200
6 - 15
240406500
63
M4
12/2
0.5-3.3
38
0 - 20
2*2.2
315
1500
1128
90
2000 - 3200
6 - 15
240406630
80
M4
12/2
0.4-2.5
38
0 - 20
2*3
400
2500
1200
105
2000 - 3200
4.5 - 11
240406800
WHD-D6-2
80
M4
8/2D
0.8-4.9
38
0 - 20
2*3
400
1200
1400
105
2000 - 3400
6 - 20
240406802
WHD-D6-2
100
M4
10/2D
0.6-3.9
38
0 - 20
2*4
400
2000
1400
105
2000 - 3400
7 - 18
240406999
Selection Criteria for Electric Wire Rope Hoists
Complete Guide to Choosing the Right Lifting Equipment
Choosing the right electric wire rope hoist is a critical decision for any industrial lifting application. These hoists are powerful, versatile machines designed to lift heavy loads safely and efficiently. To ensure you select the optimal model from H-Lift’s collection, consider the following 10 core criteria.
10 Key Selection Factors
1 Load Capacity (Rated Load)
Identify the maximum weight the hoist will lift. Always choose a hoist with a capacity equal to or greater than your heaviest load (including rigging hardware) to prevent overloading.
2 Lifting Height
Determine the vertical distance the load needs to travel. This influences rope length and drum dimensions. Ensure the hoist matches your required vertical reach.
3 Operating Conditions
Analyze the environment: Indoor/outdoor, temperature extremes, dust, or moisture. Harsh environments may require higher IP protection ratings or corrosion-resistant components.
4 Lifting Speed & Control
Choose High-speed for general productivity or Dual/Variable speed for precision positioning. Select between pendant (wired) or wireless remote controls.
5 Duty Cycle (Classification)
Match the hoist to the expected workload frequency (ISO/FEM class). Proper classification prevents motor overheating and extends service life.
6 Headroom Constraints
Check vertical clearance. Standard headroom fits general spaces, while Low headroom models are essential for facilities with limited ceiling height.
7 Mounting & Travel
Determine if you need a Fixed mounting (stationary) hoist or a Trolley system for horizontal movement along a beam.
8 Power Supply
Ensure electrical requirements match local standards (e.g., 220V/380V/415V, 50/60 Hz). Mismatched power jeopardizes performance and safety.
9 Safety Compliance
Essential features include Overload Protection, Limit Switches (prevent over-travel), and Emergency Stop functions. Verify ISO/FEM standards compliance.
10 Serviceability
Consider ease of maintenance. Accessible spare parts and clear documentation ensure long-term uptime and lower lifecycle costs.
Technical Deep Dive
Load Spectrum & Duty
Understanding the load spectrum determines the correct hoist classification.
Rope Reeving System
Reeving configuration affects lifting capacity, speed, and stability.
Main Components
Key structural components of an electric wire rope hoist.
Final Selection Checklist
What are the operating conditions?
What is the specified safe working load (SWL)?
To what height must the load be lifted?
What is the required lifting speed?
Do the loads require precise positioning?
Is horizontal travel (trolley) necessary?
How is the hoist to be controlled?
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