EATON | Cutler-Hammer Long Range Hunting Tooth Limit Switches
Long Range Hunting Tooth Limit Switches from EATON permit the various limit switch functions on a single machine to be conveniently grouped close to the drive mechanism, avoiding the need for individual limit switches dispensed about the machine or p...
Long Range Hunting Tooth Limit Switches from EATON
Features and benefits: These switches permit the various limit switch functions on a single machine to be conveniently grouped close to the drive mechanism, avoiding the need for individual limit switches dispensed about the machine or plant, each with it‘s own mechanical operating mechanism and sometimes lengthy cable runs. Designed for use with reversing drives, the switch is particularly suitable for applications involving arduous duty.
EATON single switches are available with up to six modules, each module being adjustable completely independently of the others. Most applications require a minimum of two modules to function as final forward and reverse limit switches and additional modules may be used, for example, to control accelerating and decelerating contactors, to switch indicating lamps to denote the position of the controlled limit, or to provide electrical interlocking between the controlled drive and other processes.
Applications requiring more than six units can be met by coupling the double shaft extension version of the 4 unit switch with combinations of 4 and 6 unit switches. An approved coupling is available for connectingthe switches and is supplied as required.
Each module is operated from the switch input shaft by its own gear mechanism. This mechanism works on the hunting tooth principle in which two gear wheels having different numbers of teeth rotate at slightly different speeds, when driven by identical drive pinions rotating at the same speed. This slow relative rotation is utilised to operate the positive robust snap action contact mechanism. Each module resets to its pre-operated condition with approximately a quarter of a turn of the switch input shaft.