Equipped for tough tasks

With compressed air providing the motive force for JDN products, hoists and cranes can safely operate in conditions of high dust laden or other potentially hazardous atmospheric conditions. Products come as fully explosion protected as standard, while still maintaining both high performance and continuous heavy duty operations at loadings up to 100 tonnes or more.

This ensures that products are safe for continuous and long-term operation in potentially explosive chemical atmospheres as well as the more insidiously dangerous conditions where high levels of airborne dusts exist. This can include combustible dusts, high concentrations of airborne dusts, or wherever a dust cloud is confined with an oxidant present (ie typically atmospheric oxygen) and particularly where there is an ignition source. The oxidation of other commonly known materials such as coal and sawdust can also be the source of a dust explosion. However, many other normally inactive materials such as grain, flour, sugar, powdered milk and even powdered metals can form potentially explosive dust cloud suspensions in a busy working atmosphere.  

JDN's Profi TI hoist range is designed as a workhorse for the industrial and commercial world; the operating air supply can be set at 4 or 6 bar pressure, with a standard load lift height of 3m being provided throughout. Other optional lift height requirements can be specified and accommodated as required. The range covers a total of 19 models providing lift capacities from 250kg to 100 tonnes. These incorporate many years of design and development, and have proved a reliable solution in installations within a wide range of light, medium and heavy duty industrial workplaces.

The hoist's compressed air power supply is also utilised for control functions. It does not initiate sparks, so is suitable for use when hoists are operating in potentially explosive atmospheres. Even greater safety can be achieved by the prevention of sparks generated by static discharges or metal-to-metal friction contacts.

Standard versions of JDN hoists and crane systems (which use Profi TI hoists for lift operations) have the explosion protection / classifications and markings EX II 2 GD IIA T4 / II 3 GD IIB T4.

Increased spark protection can be achieved, which involves copper galvanisation plating of the hoist bottom block and load hooks, together with fitting brass safety catches to achieve a rating of
EX II 2 GD IIB T4.

With even further increased spark protection for explosion group IIC, the hoist horizontal movement trolleys incorporate running wheels and travel gearing which are manufactured in bronze for an impressive EX II 2 GD IIC T4 rating.

The easy to use range of Profi TI hoists are 100% duty rated with unlimited duty cycles, so minimising any downtime conditions. Their compact modern design eliminates any protruding control hoses or similar external parts susceptible to damage, emphasising the suitability of the Profi range for even horizontal pulling. These standard hoists are insensitive to atmospheric dust or humidity and can withstand working temperatures from -20°C to +70°C. Their patented, low maintenance vane motor brake systems ensure fail-safe starting and positive braking, while also being low maintenance and suitable for lube-free operation.

Various pendant controls can be fitted for sensitive, single speed, multi-function or remote control operation. Strong, fast and silent operation with high performance efficiency and reliability ensure high operating speeds. These compact hoist designs can also be supplied with manual or motorised overhead trolleys for lateral movements and precise load positioning.

All JDN products are all covered by a worldwide service for annual checks, inspection and repair together with general overhaul and installation.