STAHL CraneSystems expands its chain hoist programme: SCF chain hoist now supplied with standard frequency inverter

Increased productivity with Extended Speed Range (ESR)

The SCF''s electronic gear sensor continually registers the load on the hook and from this calculates the permissible hoisting speed. When the hoist is unloaded, or is lifting up to 30% of the maximum working load, the control permits the hoisting speed to be increased to 200% of its normal rate. At 50% maximum working load the hoisting speed can be increased to 150%. As many chain hoists operate only rarely at full load under normal circumstances, many ESR can accelerate many hoisting cycles, this saves time and makes work more cost-effective.

Smoother and longer-lived

The 5-pocket chain sprocket developed for the SC chain hoist, and an active vibration-damping system, ensure that the chain runs more smoothly and reduce the load on the motor. The system counteracts the design-related vibrations arising from the chain sprocket by actively modifying the speed of the drive shaft. Another new feature is the intelligent motor control with shock damping. If the load is "ripped" with slack chain, the load is reduced at the "moment of shock" by reducing the motor speed, resulting in increased safety and a longer life for chain, hoist and crane bridge.

The modular design of the SC chain hoist platform permits the frequency inverter to be integrated directly into the housing. Thanks to its well-thought out design, on the SCF too all the chain hoist components are easily accessible for maintenance.

All chain hoists in STAHL CraneSystems'' SC series will be supplied in the future with high-end premium equipment: hard-wired controls instead of PCBs, wear-resistant chain guide and manual brake release for lowering the load safely during a power cut or system downtime are supplied as standard as of 2014. STAHL CraneSystems'' SC and SCF chain hoists astand out clearly against comparable chain hoists on the market.