Lead Screws

We V. V. Mujumdar & Associates are leading manufacturer and supplier of Lead Screws in Pune | V. V. Mujumdar & Associates Pune Maharashtra India.

Lead screws are threaded bars of metal and a threaded nut which is in direct contact with the screw; this generates sliding friction as opposed to rolling friction from other alternative devices (such as a ball screw). Rotational motion will turn the screw, causing the nut to move along in a linear motion. This, therefore, converts the motion from rotary to linear.

Trapezoidal screws are lead screws that use a trapezoidal thread form, thread angle of 30° and are manufactured in metric dimensions. The size of a trapezoidal screw is designated by the screw shaft diameter and the pitch of the lead screw is sometimes referred to as a “power screw” or a “translation screw”. They are used within motion control devices to transform rotary or turning movements into linear movements.

They can be used for either vertical or horizontal movements and can use linear slides for support where necessary. They can be operated either manually or motorised depending on the application in hand.

Lead screws are commonly used as a component within linear motion control systems. They are well suited to instrument grade applications such as;

Laboratory and life science equipment including DNA sampling
Fluid handling devices
Engraving
Rapid prototyping
Data storage
Inspection
Heavy lifting applications – a metallic nut must be used for this type of application

When selecting a lead screw, it is important to take into consideration the speed, thrust, accuracy and repeatability of the application. If you require assistance selecting a lead screw or would like to discuss your application please contact us.

Lead screws have many advantages – some of these are;

High load-carrying capacity
Compact
Easy to design into a system
Minimal number of parts
Smooth operation
Quiet
Require little maintenance

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