The installation height of the cable drum≤ 3m.
Based on the specification (overall dimension, cable core number for power, cable capacity length, the voltage, ) selected the cable drum which are required from various table.
The installation height of the cable drum>3m.

1. Counting the torque which the cable drum is needed based on the formula T=h. D. W. 1/J
Note: The output torque of the cable drum must be great than torque counted.
T: Torque
H: Installation height of cable drum
D1: Coil bar diameter of the cable drum
W: Length unit of the cable
J: Capacity is 0.85

2. Based on torque counted, cable specification (cable core number for power, cable core number for control, voltage, and the model designation), thus, confirmed the cable drum model.
Special purposes of products can be noted the requirements as cable data, cable capacity length, voltage, cart operating speed and installation height of the cable drum should be specified when ordered, so we can assist customer to confirm the cable model.

Pattern selection attention:
1. Coiling up in single row, the value W of coil bar width confirmation: Round cable width is l. 1 times of the diameter, flat cable width is1.2 times of cable' s.
2. Cable drum for control, increasing one phase, and the total length should rise 25 mm accordingly.

Features:
JMD series is a kind of long-timely hindered rotation torque motor type cable drum. Which is widely used in large scale mechanical equipment that need to horizontal move such as the material fetching machine, door pedestal crane, loading ship machine, the container hoist, tower crane, etc. Power source and signal source lie in middle or ends of distance. It transmits power source and control signal through cable drum to be coiling up and spooling off cable.