Lead screw (Precision)

Whether it is a simple lead screw or acme thread, Abssac has one of the largest linear product ranges to choose from. Combine this with a fast turnaround machine shop that can supply end journals that are ready to fit directly into your application, which ultimately reduces your scrap rate. Abssac is ready to help you find the right product for the right price.

Employing a traditional hands on approach to business, Abssac has expanded its lead screw ranges further by adding more diameters and leads per product range in 2009.  We now supply miniature diameters from 2mm up to the power screw ranges that start at 12mm and go up to a maximum of 200mm in diameter . We supply both metric and imperial leads per diameter in both right and left hand formats. Supplying, cold rolled, whirled, machined or ground style lead screw formats in stainless steel, low carbon steel and exotic materials if required, means that we have the linear device to suit all applications.

If you require multi-start, high helix for high linear traversing speeds or ultra fine Vee thread format screw for positional accuracy Abssac can supply all of your linear requirements.

All our antibacklash nut designs compliment the complete ranges of lead screws and in some cases can be tapped to run on ball screw threads. Primarily Abssac uses Delrin as the base material for the plastic nuts. Delrin is an acetal resin engineering plastic and is often used as a metal substitute. Delrin is lightweight, has a low coefficient of friction, is extremely wear-resistant and capable of operating in temperatures in excess of 90 degrees Celsius (approx 200 degrees Fahrenheit). Other plastic materials we use are: polyoxymethylene (POM), acetal resin, polytrioxane and polyformaldehyde. Bronze nuts are normally machined from SAE660 bronze but also employed aluminium bronze hybrids for certain applications.

Quick delivery, competitive pricing and a knowledgeable sales team add to the Key product features..

Please scroll down the pages to see available sizes;

• Rolled & whirled low carbon steel and stainless steel lead screws
• Standard & Precision grade rolled tolerances
• 0.1875 inch (3.20mm) through to 7.0 inch (178mm) diameter lead screws
• Trapezoidal, Acme, V thread form, Multi start high helix and custom made to order designs
• 316 and 317 stainless steel products certificated to 3.1 B
• Vast choice of metric and imperial leads
• High helix and multi start products
• Left hand and Right hand lead products
• Self reversing screw designs
• Custom nut designs in engineering plastics, (Peek, Torlon, Turcite, Delrin)
• Variety of antibacklash nut designs
• Low drag/high load antibacklash nuts
• End journal machining to your exact requirements
• Radial and thrust bearings sets to suit diameter (Bearings)
• ISO9001 approved

Anti backlash nuts

Eliminating backlash from lead screw nut designs has always been a demanding task. Removing the backlash has often meant a sacrifice in drag torque, however we have a number of solutions to this age old problem.

For example, one new nut design utilises a revolutionary cam collar, which will eliminate the backlash, maintain a high axial stiffness and simultaneously reduce drag friction. Other designs enable lighter loads (up to 4.5kg) smooth movement and low drag torque. Some nut designs utilise the latest technology in injection moulding techniques to produce the precision form complete with an integral three holed attachment flange for ease of connection to the application. An external spring and collar arrangement creates the axial preload to eliminate the backlash when on the screw.

All our antibacklash nut designs compliment the complete range of lead screws and in some cases can be tapped to run on ball screw threads.

Primarily we use Delrin as our base material for the plastic nuts. Delrin is an acetal resin engineering plastic and is often used as a metal substitute. Delrin is lightweight, has a low coefficient of friction, is extremely wear-resistant and capable of operating in temperatures in excess of 90 degrees Celsius (approx 200 degrees Fahrenheit). Other plastic materials we use are: polyoxymethylene (POM), acetal resin, polytrioxane and polyformaldehyde. Bronze nuts are normally machined from SAE660 bronze but we have also machined in aluminium bronze hybrids for certain applications.

 Please do not forget to ask for our competitive support bearing prices !

Linear Guides and rails

If you are interested in the using the lead screw products, please do not forget that we also supply the full range of linear guides and rails which can provide the load support in your linear mechanism. Offering excellent rigidity and parallelism during operation the guides can be used in both vertical and horizontal planes.

Following the link to that product page GUIDES

If you require further technical information, please do not hesitate to contact our sales engineers who will be more than happy to help you with your selection. Alternatively download the relevant linear catalogue from the download button at the top of this page or use the following link to request a printed catalogue or a CD version. CD/Catalogue