). The explosion potential of dust laden atmospheres can be high where handling powdered chemicals, but with more innocuous food based components or metallic powders all being susceptible to ignition where critical air/dust content conditions are reached.
The JDN big-bag handling hoists are purpose designed and feature twin overhead trolleys connected with rigid spacer beams, and the whole unit running on an overhead support beam. The hoists are dust-proof and explosion protected, designed for full 24/7 operation within extreme low headroom conditions. Individual handling capacities 1100 and 2200kg are available in two configurations of either single or twin lift/load hooks. The single hook unit is designed for operation with a standard cruciform lifting beam. The twin load hook models operate with more complex beam designs, or for standard lifting beams featuring twin suspension points. They can also be operated with synchronised lifting operation. Each hoist is fitted with a chain box, which is sited to eliminate the risk of collisions between loads and the chain box. The hoist low-headroom designs are also compatible with the handling of a wide variety of bulky or unusual loads. These big-bag hoists have 100% duty ratings, so eliminating downtimes. They can also be supplied with a wide variety of beam sizes and profiles, with optional hook centres located as required. The compact, modern design incorporates many JDN standard components to guarantee reliable operation combined with cost effective manufacture. No additional motor lubrication is required and only a small number of wear-free moving parts are incorporated for minimum maintenance. The hoists can be supplied with optional explosion protection ratings of: EX II 2 GD IIA T4 / II 3 GD IIB T4 and EX II 2 GD IIB T4 or II 2 GD IIC T4.