Bending Radius

Minimum Bending Radius

When bending the cable, it is necessary to consider the damage of the cable and deterioration in the performance.The minimum bending radius is made as shown in Table-1 and Table-2.

R=屈曲半径

1.Fixed Cable

Table-1
D≦8 8<D≦12 12<D≦20 D>20
Standard bending radius (mm) 4D 5D 6D 6D
Minimum bending radius(mm) 2D 3D 4D 4D

D = Cable diameter(mm)

2.Flexible Cable

Table-2
  D≦8 8<D≦12 12<D≦20 D>20
Minimum bending radius Fixed installation 3D 3D 4D 4D
Free movement 5D 5D 6D 6D
(At inlet of portable appliance or mobile equipment)
Mechanical load on cable
5D 5D 6D 6D
Under mechanical load 9D 9D 9D 10D
Festooned as in gantry cranes 10D 10D 11D 12D
Repeated reeling 7D 7D 8D 8D
Deflected by pulleys 10D 10D 10D 10D

D = Cable diameter(mm)