Calculating Line Pull
Winch and Hoist Application Guidelines
Pulling Application Req's
Required Line Pull = W x (GR + CF)
W = Weight
CF = Coefficient of Friction
GR = Grade Resistance
Coefficients of Friction
~.40-.60 Steel on Steel
~.40-.60 Wood on Concrete
~.30-.70 Steel on Concrete
~.02-.05 Load on Wheels
~.05-.10 Load on Rollers
Grade Resistance
5 | 0.050 |
10 | 0.100 |
20 | 0.196 |
30 | 0.288 |
40 | 0.372 |
50 | 0.448 |
60 | 0.513 |
70 | 0.573 |
80 | 0.624 |
90 | 0.669 |
100 | 0.701 |
200 | 0.896 |
400 | 0.970 |
Vertical | 1.000 |

Allied Power Products, Inc. has specialized in providing winches, hoists, capstans and cranes to meet our customers’ specific application requirements for more than 30 years. Contact us today for a solution to your application needs.