Who doesn’t know this situation, it is important to attach a great tool; without expensive special tools or a very strong man hardly conceivable. The following scenario is likely to be familiar to every manufacturing employee: With a long lever, a strong worker collares to close the nuts, sweaty, back-injurious and especially expensive work later, the first of four nuts is closed.
For this problem, the company ENEMAC from Germany has found a cost effective mechanical solution. The power clamping nuts ESB and ESD.
The clamping nuts operate with a hidden planetary gear in an outer casing that can be driven easily and without much effort by a small nut on the top of the casing. Thereby, the internal thread will be slightly retracted so that the counter-piece is clamped. The principle is simple, the effect is very large, because by this concept, a force of 6 – 20 t can easily be manually achieved.
Simply screw the nut onto the existing bolt, then turn the small nut on the top with a standard torque wrench, in individual cases with a normal socket wrench up to the specified torque and the will securely and especially fast strain your work piece or tool.
The Type ESB is intended for consistently large work pieces or tools, since the screw is limited by the blind hole. When changing sizes, decision should be made to ESD series with through hole threads, as this has an unlimited stroke.
Both types can be used almost everywhere, e.g. for tensioning of belt conveyors, tools in presses and punches, work pieces, during welding, etc.
At the request of many special variants, such as high temperature designs for the foundry industry, or lubrication with food grade grease for food and laboratory technology are feasible here.
The power clamping nuts are used at any time, whether as original equipment, or as a retrofit item.
