Wire Rope Hoists

SHA wire rope hoist – fast, cost-effective, frequency-controlled

STAHL CraneSystems presents in the SHA wire rope hoist a new, flexible motor concept for light industrial cranes.

The wire rope hoists in the SHA range combine the advantages of frequency-controlled hoist and travel motors (FU) with an adaptive speed range (ASR):

Stepless speed adjustment and smooth starting make work easier and reduce the stress on the crane system.

The adaptive speed control speeds up the lifting and lowering process to three times standard speed if the load is 10 % maximum load or less.

With higher loads, the hoisting speed is adapted to the actual load on the hook. The SHA uses less power due to the lower output, reducing stress on the power supply and conserving valuable resources.

The SHA comes into its own in production environments where lower loads are lifted frequently, however, higher lifting capacity is required for occasional applications. A flexible range of applications and an excellent price-performance ratio make the SHA wire rope hoist an attractive alternative to the SH series of wire rope hoists.

ASR 7 wire rope hoist – the cost-effective standard hoist

The ASR 7 wire rope hoist has been especially developed for the load capacity range from 20 to 32 tonnes. It closes the gap between the field-proven wire rope hoist series SH and AS 7. Thanks to the lower load capacity and in some cases lower classification, smaller motors and long-life ropes with smaller diameters can be used. The bottom hook block and rope return sheave have been adapted to the smaller diameter of the rope. The result is a price saving of around 25 % compared with comparably dimensioned AS 7 with double rail crab.

Depending on load capacity and application, the ASR 7 is available in three different FEM classifications. It can be used in combination with double rail crabs on double girder overhead traveling cranes, or as stationary lifting or towing equipment. The new wire rope hoist is also available as ASRF 7 with frequency-controlled hoist motors for smooth hoisting and step-less speeds.

The accessories too are convincing:

For the first time on the AS 7 series, load measurement is at the rope anchorage as standard. This permits the lifting and lowering motions to be measured accurately and the load to be indicated on a display.

AS 7 wire rope hoist – the compact powerhouse

The AS 7 range supplements the SH series in the upper S.W.L. range up to 125,000 kg. Its compact construction makes it particularly suitable for systems building and applications in restricted spaces. The AS 7 wire rope hoist is used either as stationary hoisting or towing equipment or mounted on crabs on double girder cranes and systems.

On the AS 7 wire rope hoist, motor, gearbox and rope drum are arranged in line on a common axis. This central gear concept permits high outputs and loads.

The AS 7 wire rope hoist is also available as a twin hoist for higher S.W.L.s, hoisting speeds and heights of lift.

The AS 7 wire rope hoist programme from STAHL CraneSystems is optionally available in explosion-protected design in compliance with ATEX for use in Zone 1, Zone 2, Zone 21 and Zone 22.

Higher, stronger, faster – the AS 7 twin wire rope hoist

STAHL CraneSystems upgrades its heavy-duty class with the AS 7 ZW.

The combination of two AS 7 wire rope hoists as a twin hoist offers an interesting alternative to comparable hoists in a similar load class as regards technology and price. As a twin hoist, the AS 7 wire rope hoist has a higher hoisting speed than conventional hoists. It differs from its “little brother” AS 7 in its considerably greater lifting height and above all its maximum safe working load of 125 tonnes which it owes to a modified rope reeving.

TDC Twin Drive Concept – doubly safe and reliable

Particular safety regulations apply for transporting molten metal. The German Industrial Standard EN 14492-2 requires hoists to be designed in such a way that the load can’t fall if a component in the power flux should fail.

The Twin Drive Concept from STAHL CraneSystems meets all these requirements.

Wire rope hoists with Twin Drive Concept are equipped as standard with two redundant motor-gear-units. Both motors are always activated synchronously. The brakes fitted to both motors are calculated so that each one is capable of braking or holding the load by itself in an emergency. Both brakes are activated together and act as operational and holding brake.

All drives on hoists with Twin Drive Concept are monitored by condition monitoring systems from STAHL CraneSystems.

Explosion-protected wire rope hoists – no compromises on safety

Explosion-protected hoists are needed on oil rigs, in gas liquefaction plants (LNG), in mines or in the chemical industry: wherever explosive gases or dusts predominate.

STAHL CraneSystems is world market leader for explosion-protected hoists. Experience, expertise and the insights gained from decades of fundamental research and development converge in our company. STAHL CraneSystems occupies an exceptional position in this field enjoying approvals from the Federal Physico-Technical Institute (PTB) and many international inspection authorities.

All the wire rope hoist components are of our own production: from motor and brake to control and switchgear. In this way we can guarantee optimum explosion protection.

The rigorous ATEX regulations on mechanical explosion protection are of course met. STAHL CraneSystems was the first builder of overhead material handling technology to implement the ATEX directive throughout the product programme.