The BJ worm gear screw jack was created in several different versions and happens to be found in countless solutions within Healthcare, the Food Industry and other industries.
All worm gear screw jacks may as standard be given easy-to-clean and yellow chromated surfaces with stainless spindles and food approved lubricants.
If there are particular requirements for the design, we are pleased to offer adaptations even in smaller quantities.
The spindles could be protected from dirt and water through the use of protecting tubes.
Ball-screw jacks include a high-effectiveness ball screw and nut that reduces the mandatory input torque to about one-third the torque required for machine-screw jacks. 300 Series Stainless-metal screw jack are for environments where corrosion resistance is essential. Stainless-metal lifting threads are precision formed to Course 2-C (centralizing) thread profiles.
The design is compact, simple and its own modular construction allows great versatility in the decision of gear, installation options, flanges, oil types and surface treatments. The modular style is also ideal when there is a need for customisations where in fact the gearbox must be optimized for specific needs. That is the reason why we can produce worm equipment screw jacks adapted to your wants at an attractive price.
The worm gear screw jack allows for axial positioning and as well as our other products within the field of encoders, couplings and connecting shafts, it permits running more axial movements synchronously.
By connecting individual screw jacks with drive shafts lifting systems can be realized in a simple way. With the wealthy accessories many problems could be solved with the standard program.
There are two basic types of screw jacks which a few additional styles originate. 1st, there are translating screw jacks. These kinds of screw jacks use a lift shaft or screw that travels into or right out of the worm gear container. The lift shaft can either protrude from the installation flange side of the gearbox or from the top side of the worm gear box. Secondly, are rotating type screw jacks. In this style, the lift shaft continues to be 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 must be secured to prevent 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 supported 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 precision is approximately 0.004 in./ft.