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| Ningbo Zhonghuang Machine & Electrics
Co.,Ltd. Add: NO.12 Chenxin Road.Xikou
Industrial Zone,Ningbo
City,Zhejiang,China
315502
Tel: 0086-574-88859333
88845111
Contact Person: Mr. Keding Cao
Fax: 0086-574-88862111
Email: ckd@zhme.com |
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Choosing Winch Tips |
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General Winch Selection
Because the high forces generated when using a winch create potential
safety hazards, careful consideration should be given the winch
selection process.
When selecting a winch you need to consider the gross vehicle weight
and winch’s line pull.
Gross vehicle weight contains your vehicle’s curb weight and
the weight of the supplies and equipments carried.Generally speaking,
you need a winch with a maximum line pull of at least 1.5 times
greater than the gross vehicle weight
Rolling Pull
The winch can pull up a slope of a particular gradient and surface
resistance.The rolling pull varies with gradient and the resistance
of the wheels on the surface.
How steep is the slope or ramp? To determine the grade of the incline,
measure the height and the length of the ramp.
Height / Length = % Grade
Our common surface resistance are as below: |
|
Friction Factor/Surface resistance |
Sand |
0,18 |
Gravel |
0,20 |
Mud |
0,32 |
Marsh |
0,52 |
Loose sand |
0,22 |
Metal |
0,15 |
Maximum Rolling Pull=Maximum Line Pulling/(G+F)
G=Gradient Factor F=Friction Factor
Example how to calculate the maximum Rolling Pull of 4 tons pulling
winch for a loose sand with a 70% gradient. |
| Gradient |
5% |
10% |
20% |
30% |
50% |
70% |
100% |
Angle |
3 |
6 |
11 |
17 |
26 |
35 |
45 |
G.vaiue |
0,06 |
0,11 |
0,2 |
0,3 |
0,44 |
0,58 |
0,71 |
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Vinches For Vehicles
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12500lbs |
12000lbs |
10000lbs |
9500lbs |
9000lbs |
8500lbs |
8000lbs |
6000lbs |
Land Cruiser100 |
B |
A |
A |
A |
A |
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Land Cuiser90 prado |
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B |
B |
B |
B |
A |
A |
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Land Cruiser70(long) |
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B |
B |
A |
A |
A |
A |
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Safari(long) |
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B |
B |
A |
A |
A |
A |
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Terrano |
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A |
A |
B |
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Datsun |
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B |
B |
A |
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Pajero(long) |
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B |
B |
A |
A |
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Challenger |
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A |
A |
B |
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Paijero(io) |
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A |
A |
A |
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Bighom |
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B |
B |
A |
A |
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Rodeo |
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A |
A |
B |
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Grand Cherokee |
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A |
A |
B |
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Cherokee |
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A |
A |
B |
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Wrangler |
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A |
A |
B |
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Explorer |
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B |
B |
A |
A |
A |
A |
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F150 |
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B |
B |
A |
A |
A |
A |
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Blazer |
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B |
B |
B |
B |
A |
A |
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Hummer |
A |
B |
B |
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Range Rover |
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B |
B |
A |
A |
A |
A |
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Discovery |
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B |
B |
A |
A |
A |
A |
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Mercedes G class(long) |
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B |
B |
A |
A |
A |
A |
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Mercedes M Class |
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A |
B |
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| A=The
First Choice B=The Second Choice |
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ATV/UTV Winch
