JS Series Spring-driven cable reels are equipped with Safetychange spring cartridges. The Metreel spring system includes a unique free-wheeling hub that allows for simple spring pre-tension.
The hub is designed to clutch in one direction and free-wheel in the opposite direction which allows pre-tensioning of spring motors while the cable is connected. It also protects the spring against overwind in the event of a broken or severed cable.
The hub simply de-clutches and free-wheels under this condition.
All springs are contained in disposable cartridges for easy handling and quick safe replacement. Springs are simply replaced by loosening 4 bolts and removing pawl and pawl springs from the free-wheeling hub and replace with a new cartridge. On multiple spring designs, each spring is clutched to the spring shaft. In the event of one spring failure, the other springs will maintain tension on the cable.
All springs are made of high quality spring steel. Most springs are equipped with hinges at both ends to reduce stress at mounting points ensuring maximum life. All springs are enclosed in disposable Safetychange housings, and are lifetime lubricated prior to sealing.
Free Wheeling Hub
Unique free-wheeling spring hub design allows for easy cable installation and spring tension adjustment. Also protects spring motor in the event that the cable is severed.
Safe, Simple Spring Tension Adjustment
Merely remove inspection cover and pretension spring as shown on nameplates. No need to disconnect cable or disassemble reel. Tension spanner provided with each reel.
Designed With Safety In Mind
Safetychange spring motor located outboard on frame for easy accessiblity – power spring sealed in throw-away disposable housing. Spring motor is replaced as a unit, with no need to handle loose springs or remove reel from its mounting. All multi-spring reels are equipped with an inspection hole for visually checking integrity of spring without removing spring motors while reel is in service.
All Steel Chain Case
All steel chain case is dust-tight, weathertight with sealed prelubricated bearings. Chains are equipped with adjustable tensioners for smooth, trouble-free operation and are in a fully enclosed housing, operating in an oil bath to ensure long component life. The gearing arrangement differs in JM Series Reels to allow full utilisation of torque motor characteristics. The case is of similar construction in both JS and JM Series Models.
JM SERIES TORQUE MOTORS…
Provide a reliable solution to the problems of reeling long lengths of cable at high duty cycle rates demanded by today's heavy industry. The torque motor is a specialised motor that can withstand a 100% stall, requiring virtually no maintenance. When driving an electrical cable reel, the torque motor is energised as long as the equipment is in motion. When the reel retrieves the cable, the motor continues to run to provide tension on the cable and match the payout speed. When the torque motor is off, a mechanical holding brake prevents the reel from unwinding.