Stahl Explosion Protection
- Patented suspension directly on the chain guide
- The most comprehensive explosion-protected chain hoist programme for the load capacity range from 125 kg to 6,300 kg
- Maximum utilisation of space thanks to the extremely short and compact headroom dimensions
- Standard classification in accordance with FEM
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Wheels
The type of protection of all wheels is constructional safety. If travel speeds are high, this also includes brass wheels.
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.
Gear
The types of protection of the gear are constructional safety and liquid immersion. The protective liquid (oil) prevents sparks.
Equipotential Bonding
Equipotential bonding is essential for avoiding incendive sparks when installing crane technology in potentially explosive atmospheres.
Overload Device
The overload devices for Zone 1 and 21 comprise mechanical sensors (LMS), analog sensors (LET) for Zone 2 and 22.
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.
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 dby post-type bushing.
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.
Control Pendant
The type of protection of the housing is IP 66, installed elements protected by flameproof enclosure, increased safety and protection by housing.
Limit Switch
The type of protection of the limit switch combines flameproof enclosure, increased safety and protection by housing.
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.
