Stahl "ST Ex" ATEX Certified Electric Chain Hoists, with Optional Suspension Type, Range from 125kg to 6300kg

• Capacity from 125kg to 6.3t.
• Available for Zone 1, Zone 21 or Zone 21.
• Available with Hook, Eye, Push Travel Trolley or Electric Travel Trolley.
• Available as 'Low Headroom' if required.

Available in 13 load capacity brackets from 125kg to 6,300kg, the ST Ex explosion-protected chain hoists from STAHL Crane Systems meet the European product directive 2014/34/EU (ATEX 95) and the international IECEx regulations. They are specially constructed for use in Zone 1 or Zone 21, however they can also be used in Zone 22. The mechanical design is prototype-tested: TÜV10ATEX7642x.

This series of chain hoists belongs to the most distinctive and comprehensive on offer in the world. In use in thousands of applications for decades, modernised and optimised again and again, this chain hoist is a classic, powerful, reliable and undemanding as regards maintenance and power consumption.

The ST Ex chain hoist is used as stationary hoist with suspension hook or eye, rigid attachment or with push or electric trolley and is particularly suitable for rugged use in industry. The innovative and pioneering design of the chain hoist brings considerable economic advantages.

The extremely short headroom available as an option for every type of chain hoist optimises the effective hook height. In addition to standard versions, further off-standard versions and customer-specific solutions are available.

• „„Patented suspension directly on the chain guide.
• „„The most comprehensive explosion protected chain hoist programme for the load capacity range from 125kg to 6,300kg.
• „„Maximum utilisation of space thanks to the extremely short and compact headroom dimensions.
• „„Standard classification in accordance with ISO.

Standard classifications in accordance with ISO

Explosion Protection

Stahl: Experts in Explosion Protection

As one of the leading manufacturers of explosion-proof lifting and crane technology, STAHL CraneSystems offers a broad and complete portfolio of products as well as comprehensive services in this field. Explosion-protected products from STAHL CraneSystems meet not only German national laws and European ATEX directives but also international standards and laws for the American and Asian market. For example, all products are certified both to ATEX and IECEx.

Stahl product types are certified after passing an EC prototype test and undergo the conformity assessment procedure specified in the directives. Development and manufacture of the series products are subject to our strict quality management monitored by independent European inspection authorities. The test certificates from the notified European inspection authorities are recognised throughout the EU.

The rating plates indicate in addition to the usual data (manufacturer, type, serial number, electrical data) the data relevant to explosion protection. CE marking of the products, declaration of conformity in writing and detailed operating instructions and documentation confirm that all valid EU directives applicable to the apparatus are observed.

Decades of experience in the field of explosion protection, responsible, expert staff and production in accordance with the latest directives and standards guarantee quality down to the last detail for every piece of
explosion-protected equipment from STAHL CraneSystems.

The components and electrics, which also meet the European product directive 2014/34/EU (ATEX 95) and the international IECEx regulations, are the perfect complement to explosion-protected lifting technology from STAHL CraneSystems.

The correct functioning and high performance of a crane system depend on the quality of all its components. These are developed down to the last detail by STAHL CraneSystems and supplied from our own production. Forward-looking, high-quality modules complement one another in the system and ensure both safety and cost-effectiveness. Using the modular components, our crane manufacturing partners in your region are able to adapt the crane system individually to customer-specific requirements and wishes. Mature, cost-effective electronics, drive technology to meet the highest demands, innovative modules and field-proven, robust standard components are available for these adaptations. The expert crane manufacturing partners and experienced system manufacturers are trained by STAHL CraneSystems’ explosion protection experts so that they are always up to date as regards the status of national and international regulations and state-of-the-art technology.

Bottom Hook Block

For high and very high travelling speeds the load hook and the solid parts of potential impact surfaces are bronze-coated. In addition, all other exterior surfaces of the bottom hook block can be bronze coated to prevent sparking.

Panel Box

Flameproof enclosure for Zone 1 and Zone 2: the sheet steel or aluminium housings can be used as individual housings or in combination. All components required such as transformers, contactors, fuses, measuring instruments and tripping devices can be installed in the modular-design housing. Post-type bushings provide the connection
to the terminal box (in increased safety Ex e).

Travel Drive

The explosion-protected travel drives Zone 1 and Zone 21 are designed for intermittent operation. They have a sliding rotor motor with conical brake and centrifugal mass for smooth starting and braking characteristics. All motors are pole-changing providing two travel speeds. The particularly quiet gear requires little maintenance thanks to its long-term oil bath lubrication.

Crane End Carriages

Crane systems up to a safe working load of 50,000 kg and a span of 30 m can be built with explosion-protected end carriages for underhung and overhead travelling cranes. For particular applications, at customers’ request and for increased safety all wheels can be supplied in brass.

Control Pendants

The SWH 5 Ex control pendants are designed specifically for controlling hoists and cranes in hazardous areas. Activation is generally 2-step and permits a quick changeover from ›fast‹ to ›slow‹ and vice versa. All control pendants are equipped with an EMERGENCY STOP slam button meeting the requirements of IEC/EN 60947-5-5.

Explosion Protected End Carriages

• for single girder overhead travelling cranes, 7 wheel diameters and 5 wheel bases.
• for double girder overhead travelling cranes, 7 wheel diameters and 6 wheel bases.
• for single girder underhung cranes, 4 wheel diameters and 3 wheel bases

Explosion Protected Drive Technology

• Supplied as standard with 2-step speeds 20/5 m/min or 40/10 m/min, other speeds on request.
• As an option, stepless speed control.

Explosion Protected Control Technology

• SWH 5 Ex wired control pendant.
• Panel box in explosion-protected design.

Explosion Protected Electrics

• Festoon cables in conjunction with control pendants or radio remote controls

In lifting, drive and control technology both electrical and non-electrical components and parts can trigger an explosion. STAHL CraneSystems therefore offers apparatus specially designed for use in areas subject to gas or dust explosion hazard. All hoists and crane components without exception are from Stahl's own production, from motor and brake to controls and switchgear, and meet the latest European (ATEX) and international (IECEx) construction and safety regulations for potentially explosive atmospheres.

1. Wheels: The type of protection of all wheels is constructional safety ›c‹. If travel speeds are high, this also includes brass wheels.	2. Rope guide / Chain Guide: The wear-resistant rope guide in nodular graphite casting GJS (previously designated GGG) is extremely durable and not subject to temperature limitations. The same applies to the chain guide, type of protection used: constructional safety.	3. Gear: The types of protection of the gear are constructional safety ›c‹ and liquid immersion. The protective liquid (oil) prevents sparks.
4. Euipotential Bonding: Equipotential bonding is essential for avoiding incendive sparks when installing crane technology in potentially explosive atmospheres.	5. Overload Cut Off: The overload cut-off operates with a dual channel load sensor supplying analog signals. Various sensors are used depending on reeving (LCD, LSD).	6. Panel Box: The type of protection for panel boxes for Zone 1, 2 and 21 on cranes and hoists combines types of protection flameproof enclosure, increased safety and protection by housing.
7. Cable Entry: Indirect cable entry, very high safety level from type of protection increased safety and flameproof enclosure. Connection of the Ex e connection box to Ex d by post-type bushing.	8. Motors: Motors for Zone 1 and 21 are made of grey cast iron, the type of protection combines flameproof enclosure, increased safety, and protection by housing. For Zone 2 the motors are made of aluminium and in type of protection non-sparking equipment. For Zone 22 the motors are manufactured in IP 66 and protection by housing.	9. Control Pendant: The two-step SWH Ex control pendants in IP 66 protection are used on explosion protected wire rope hoists for Zone 1.
10. Gear Limit Switch: The protection class of the gear limit switch is IP 66. The elements installed are protected by flameproof enclosure, the housing by increased safety.	11. Bottom Hook Block: The type of protection employed is constructional safety, no aluminium is used. If travel speeds are high, individual parts, such as the load hook, are bronze coated.