The BJ worm gear screw jack is designed in several different versions and happens to be used in countless solutions within Healthcare, the meals Industry and other industries.
All worm equipment screw jacks may as standard be supplied with easy-to-clean and 
yellowish chromated surfaces with stainless steel spindles and meals approved lubricants.
If there are unique requirements for the design, we are pleased to offer adaptations also in smaller quantities.
The spindles can be protected from dirt and water through the use of protecting tubes.
Ball-screw jacks include a high-performance ball screw and nut that reduces the required input torque to about one-third the torque necessary for machine-screw jacks. 300 Series Stainless-steel screw jack are for conditions where corrosion resistance is essential. Stainless-metal lifting threads are precision formed to Class 2-C (centralizing) thread profiles.
The look is compact, simple and its own modular construction allows great versatility in the choice of gear, mounting options, flanges, oil types and surface treatments. The modular design is also ideal if there is a dependence on customisations where in fact the gearbox should be optimized for particular needs. That is the reason why we are able to produce worm gear screw jacks adapted to your wishes at an attractive price.
The worm gear screw jack permits axial positioning and together with our other items within the field of encoders, couplings and connecting shafts, it allows for running more axial movements synchronously.
By connecting individual screw jacks with drive shafts lifting systems could be realized in a straightforward way. With the rich accessories many problems could be solved with the standard program.
There are two basic types of screw jacks of which a few additional styles originate. Initial, there are translating screw jacks. These kinds of screw jacks use a good start shaft or screw that travels into or right out of the worm gear package. The lift shaft can either protrude from the installation flange aspect of the gearbox or from the very best part of the worm gear box. Secondly, are rotating type screw jacks. In this design, the lift shaft remains stationary and a lifting nut moves along the lift shaft. Similar to the translating screw jacks the screw can also protrude down from the installation flange or up from the top of the jack. To produce translation of the lift shaft or nut, both configurations should be secured to avoid rotation. Where that is unfeasible, keyed screw jacks are an option.
Each model’s worm-gear-set arrangement uses an alloy-metal worm, which drives a high-strength bronze worm equipment (drive sleeve). The worm shaft is supported on antifriction tapered roller bearings with exterior seals to prevent loss of lubrication. Machine-screw jacks feature a lifting shaft made of alloy steel with a minimum tensile strength of 95,000 psi. Lead accuracy is around 0.004 in./ft.