The BJ worm gear screw jack was created in several different versions and is currently found in countless solutions within Healthcare, the meals Industry and other industries.
All worm equipment screw jacks may as standard be given easy-to-clean and yellowish chromated areas with stainless steel spindles and meals approved lubricants.
If there are unique requirements for the design, we are very happy to offer adaptations also in smaller quantities.
The spindles can be protected from dirt and water by using protecting tubes.
Ball-screw jacks include a high-performance ball screw and nut that reduces the required insight torque to about one-third the torque required for machine-screw jacks. 300 Series Stainless-steel screw jack are for environments where corrosion resistance is essential. Stainless-steel lifting threads are precision shaped to Class 2-C (centralizing) thread profiles.
The design is compact, simple and its modular construction allows great flexibility in the choice of gear, installation options, flanges, oil types and surface treatments. The modular style is also ideal if there is a need for customisations where the gearbox must be optimized for particular needs. That’s the reason why we are able to produce worm equipment screw jacks adapted to your wants at an attractive cost.
The worm equipment screw jack permits axial 
positioning and together with our other products within the field of encoders, couplings and connecting shafts, it allows for running more axial actions synchronously.
By connecting individual screw jacks with drive shafts lifting systems can be realized in a simple way. With the wealthy accessories many problems can be solved with the typical program.
There are two basic types of screw jacks which a few additional styles originate. Initial, there are translating screw jacks. These types of screw jacks use a lift shaft or screw that travels into or out from the worm gear package. The lift shaft can either protrude from the installation flange aspect of the gearbox or from the top side of the worm gear package. Secondly, are rotating type screw jacks. In this style, the lift shaft remains stationary and a lifting nut techniques along the lift shaft. Similar to the translating screw jacks the screw can also protrude down from the mounting flange or up from the top of the jack. To create translation of the lift shaft or nut, both configurations must 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 gear (drive sleeve). The worm shaft is backed on antifriction tapered roller bearings with external seals to prevent lack 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 approximately 0.004 in./ft.