A lead screw is a screw which translates rotary motion into linear motion. Normally used as the driving mechanism in horizontal or vertically driven applications aided by linear guides for supports. They are described by diameter and pitch or lead. The pitch or lead is the amount of travel you get, or distance the nut travels along the screw for every complete revolution. They can be operated manually or motorised.
As specialists in linear motion systems we offer you a choice of materials and sizes. So whether you need lightweight aluminium rails for use in aviation applications or stainless steel components for when exposure to water or corrosive chemicals is a factor, our knowledgable technical engineers are always on hand to provide assistance.
Make sure you request a free Linear Motion Handbook here and utilise our free CAD to help you save time planning your projects.
Rolled trapezoidal C45 steel lead screws, right hand thread. Lengths of up to 6 meters can be provided. Tr 10 to Tr 120.
Rolled trapezoidal C45 steel lead screws, left hand thread. Lengths of up to 6 meters can be provided. Tr10 to Tr 120.
Rolled trapezoidal A4 stainless lead screws, right hand thread. Surface Hardness 280HB. Lengths of up to 6 meters can be provided. Tr 10 to Tr 120.
Rolled trapezoidal CK40 steel or 303 stainless lead screw. These have a left and right hand thread on either end of the screw for applications requiring a scissor type movement.
Anodized aluminium or 416 stainless steel screw with square acetal resin nut. High precision, tight axial clearance. Nut fitted to screw to ensure anti-backlash.
Anodized aluminium or 416 stainless steel screw with round acetal resin nut. It is suited to dry atmospheres, fresh water and mild alkalis and acids. Nut fitted to screw to ensure anti-backlash.
Steel square nuts for lead screws. Standard nuts are right hand thread, single starts.
Easy to install. Allows for some misalignment at installation. Compact system, small footprint compared to other rail systems. Preload adjustable by hand.
Although it can take very large loads it cannot take anywhere near as much load as the linear guideways rail system.
Cheaper alternative to the compact rail. Use of T and U rails allows for misalignment at installation. Preload adjustable by hand.
Available in AISI 316L stainless steel suitable for use in applications requiring a high level of corrosion resistance, including sea water.
Cannot take as much load as other systems. Not suitable for moment loads.
Can take extremely high loads including moment loads. Very smooth in operation.
Must be aligned very accurately which costs time and money preparing the mounting surface properly.
Available in a range of materials and sizes. A length of shaft bar is typically cheaper than the cost of an equivalent size precision linear rail.
A larger diameter shaft would be required when there are long lengths and high loads involved compared with the size of an equivalent shaft support rail you would need. This is because they would only be supported at the ends and the shaft ends could bend in the middle if the diameter was too small.
Shaft support rail systems have a shaft support along the full length so are less likely to flex.
Similar to linear guideways, must be aligned very accurately otherwise any mis-alignment may cause the system to ‘snatch’.
We are pleased to say our products have never been so popular; we are experiencing unprecedented levels of demand.
Unfortunately our normal levels of customer service and timescales for despatch are being impacted. We are making every effort to bring despatch times back to normal levels, and would ask you to bear with us while we integrate and train new staff.
Currently despatch of in-stock parts are running at 48 to 72 hours from receipt of order - if you do have goods requiring most urgent delivery, we would ask you to contact us with your express requirements and we will do our best to accomodate your requirements.
Many thanks for your continued business