This range of robust cable-drums all have steel drums, with steel tube cage-style frames. All have a friction drum-brake incorporated into the frame to prevent movement in transit. The drums are available with two different styles of side flange - plain or with cable tail supports. The core of the drum on types CD4822 and CD4823 is a solid steel tube with an aperture to allow the cable tail to go into the drum core. On the other types, the core of the drum is formed from a number of steel bars welded between the flanges.
The drums are available with four different styles of side flange - plain, with blanking-plate, with cable tail supports or with cable tail supports plus an additional flange.
‘Plain’ types have a solid steel flange. ‘Blank plate’ versions have a removeable plastic blanking-plate over the hub, which can be punched to accept connectors as required, or removed for access to the inner tail of the cable. ‘Cable tail’ types have an open hub plus four brackets on the flange face to enable the cable tail to be brought out from the hub of the drum at a gentle angle (important for coaxial and essential for fibre cables) and coiled and secured around the brackets. ‘Cable tail flange’ types have cable tail supports plus an additional flange, forming an 80mm wide extra section on the side of the drum to protect the tail.
This series of drums are stackable. Types CD4700, CD4730 and CD4822 use the same size frame and stack with each other. The larger types CD4701, CD4731 and CD4823 use the same size frame and stack with each other.
Heavy-duty wheeled trolleys are available to suit all the drums in this series, see Canford cable drum trolleys.
Capacities (tight pack)
All figures given are based upon a theoretical ‘tight pack’ and do not take into account any maximum weight loadings for drums being exceeded. It is recommended that an allowance of up to 30% be made to accommodate loose winding. A lower percentage could be used if the crew are known to always wind the drums neatly!