Comment fonctionne un Vis filetées?

In the case of roller screws, the rollers rather than the nut are in direct contact with the screw thread offering greater efficiency. There are three types of manufacturing process for a screw, either rolled, ground or machined using a whirling process. Power Jacks employs all methods in the manufacture of our lead screws.

Lead screws are used in a very broad range of applications, sold as individual products or incorporated into screw jacks and electro-mechanical actuators. As with screw jacks, Industrial Automation, Medical, Defence and Transport applications are particularly popular lead screws.

Through both our experience and machining capabilities, Power Jacks have the ability to offer may thread forms customised to suit your application, multi starts, variable pitch treads, diameter to 300mm and lengths up to 20 metres.

• Trapezoidal thread
• Sharp thread
• Buttress thread
• Knuckle thread
• Course thread
• Diamond thread
• Threaded nuts
• Lead screw repair & reverse engineering