Z-Axis Module with Cover is designed from a very rigid aluminium structure, resistant to vibrations, made of extruded and structured aluminum profile to withstand high stresses and vibrations, HGR linear guideways enable high precision and long service life, and the Ballscrew SFU2005 is able to withstand high loads with minimal positioning tolerances and a long service life. All moving parts are standard and subject to replacement for other parts in case of repair or others. Z-Axis Module with Cover is designed from a very rigid aluminium structure, resistant to vibrations, made of extruded and structured aluminum profile to withstand high stresses and vibrations, HGR linear guideways enable high precision and long service life, and the Ballscrew SFU2005 is able to withstand high loads with minimal positioning tolerances and a long service life. All moving parts are standard and subject to replacement for other parts in case of repair or others. This Z-axis module is an excellent solution for routers for engraving, aluminum milling, processing wood and plastic materials and more.Rigid and durable structure of the moving and static part of the module. 1*) Here are double bearings in the housing and the Ballscrew is fixed with a nut in the axial direction. 1) From back side , there are 6pcs of T-Nut M6 for assembly , it can be removed or added more of them. From both sides, there are 4pcs of T-Nut M4 , it can be removed or added more of them. The cover is extremely rigid and can withstand a lot of impact and pressure. You can install a NEMA34 or NEMA23 stepper motor, the coupling is fi14mm but coupling can be changed for any other shaft diameter. THE MOTOR IS NOT INCLUDED On the above drawing there are 6 holes for threading M6*12mm, that part is intended for the mounting plate that carries the motor spindle SHIPPING DELIVERY: WARNING: We ship every day Monday - Friday in our timezone GMT+2. All deliveries take place within one working day after received/confirmed payment. All items are located and sent from Bulgaria. We carefully pack all orders and if possible use ecologically environmentally friendly packing. Please note the estiminated shipping time by country and postal service due our experience below: International Tracked: Europe: usually 5 - 10 working days. USA, Hong Kong, Singapur, Israel: usually 15 - 25 working days. Australia, Canada, Asia, Africa, South America, Rest of the world: usually 20 - 45 working days MONEY-BACK GUARANTEE RETURNS: In case there are any issues, please contact us upfront before leaving a neutral/negative feedback or opening a case. We will do always our very best to resolve any issue/situation as fast as possible. Please note! To be eligible for a return, your item must be unused and in the same condition that you received it. Please make sure the product is unopened, unused and the seals fully intact. It must also be in the original packaging and you have to send it back before we can issue a replacement or refund. If the returned product complies with the above rules we will process the refund. If 30 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. Before returning any product please contact us using messaging system. Note! If you have any problems with your shipment, please do not hesitate to contact us. Our customer support is always responsive to your problems and questions. We also expect positive feedback after you are satisfied with your purchase.