The general duty mini series air hoists, with lift capacities from 125 to 1,000 kg, are rated Ex  II 3 GD IIA T4(X). All units, including the larger capacity handling products with lift capacities up to 115 tons, are suitable for lube-free operation with easy maintenance. They feature sensitive, infinitely variable speed control for precise load positioning, with overload protection as standard. They are also insensitive to dust, humidity, fumes and other generally poor working conditions and can operate in a temperature range of  20°C to 70°C.