Cranes and Hoists

Rotomatik’s cranes and monorails systems together with Stahl’s certified crane components are constructed to minimise explosions in potentially explosive environments of:

  • Gas – Zone 1 and Zone 2
  • Dust – Zone 21 and Zone 22

Our equipment are designed with the aim of containment of explosion by two methods:

  • Mechanical – all motor and electrical enclosures are designed to repress explosion
  • Electrical – Energy limiting methods (like intrinsically safe and non-incendive circuits) that ensure that if a spark is generated, there is not enough energy in the spark to ignite the atmosphere

The distinct features are of Rotomatik’s cranes and hoists are:

  • Wheels constructional safe; brass wheels for very high speeds
  • Rope guide nodular graphite casting GJS constructional safe
  • Gear liquid immersed constructional safe
  • Equipotential bonding preventing invendive sparking
  • Overload devices for Zones 1 & 2, Zones 21 and 22
  • Panel boxes flameproof and increased safety
  • Flameproof bushing
  • For Zone 1 and 21, motor casing cast iron; for Zone 2 and 22, motor casing aluminium
  • Control pendant IP66, flameproof and increased safety
  • Limit switches flameproof enclosure and increased safety
  • Bottom hook constructional safe; bronze-coated hook for high speeds