Constant Force Spring Spool

A constant torque is obtained when the outer end of the spring is attached to another spool and caused to wind in either the reverse or same direction as it is originally wound.

Constant force spring spool.

One of the most common questions about constant force springs concerns the mounting of the spring on a spool. Some constant force springs may implement a drum or spool which can move as part of the spring deflection while other constant force springs do not use a drum at all. Mounting a constant force spring on a spool. 0 50 inch metallic for use with lead aluminum cable sheaths cable screening tapes wires steel aluminum.

When using a spool diameter greater than the i d substitute the spool diameter in place of the i d. 1 50 0 75 inch width. It can be placed in a cavity or on an undersized bushing or pin. Posted by vulcan spring.

The pick up pin is attached to a spool that is connected to a constant force spring sometimes known as a negator spring. For starters the spring doesn t have to be mounted on a spool. Establish the force the force of a constant force spring should be equal to the requirement of the application. If there is a leader on the front of the spring commonly called a pickup that length should also be included.

These spring reels also known as cable retractors provide a fast and economical solution for applications where counterbalancing retrieving or returning functions are required. The force is constant because the change in the radius of curvature is constant this is true if the change in coil diameter due to buildup is disregarded. For more information on spools please see mounting a constant force spring on a spool. Hunter spring offer high quality flat springs such as constant force springs constant torque springs power springs prestressed power springs and more.

The full rated load of the spring is reached after being deflected to a length equal to 1 25 times its diameter. Constant force or clock springs constant force springs a constant force or clock spring is a roll of prestressed strip which exerts a nearly constant restraining force to resist uncoiling. Constant force spring range. Hunter spring offers a great selection of spring powered cable reels with different mounting options.

Coil deflection fixed coil constant force springs have coils that do not travel with deflection. A latch holds the spool with the spring adjacent to the supply reel.