High quality lead screw assemblies meet your most demanding micro positioning applications. Specify lead accuracies of 10 micro inches per turn and 25 micro inches per inch, the best in the industry. Lead screws, with many built-in features, offer designers distinct advantages compared to ball bearing screws and conventional lead screws.

Major features of lead screws:

1) Smoothness of operation
2) No noise
3) Absolute and repeatable positioning accuracy over a distance
4) Self-aligning nut eliminates side loading of linear bearings and prevents nut binding or positioning error due to misalignment in lead screw installation.
5) Self-compensation for pitch diameter variation extends life expectancy without performance degradation.
6) Minimum helical no linearity within a revolution (drunkenness). Important for equal step size or constant velocity applications.
7) Anti-backlash nut design for bi-directional repeatability.

Lead screws are of three types:
1) Standard thread
2) Fine pitch thread
3) Inch threads lead screws.

Designs & dimensions of lead screw:
Lead screws are made of steel and feature synthetic or brass slide nuts. Standard nuts are machined out of semi fabricates. For higher quantities and eventually mould-injected plastic nuts. Speedy high-helix lead screws are an ideal alternative to conventional hydraulic / pneumatic and mechanical linear transmission solutions. The lead screws, which are available, are rectangular or round nut, pitch diameter of 3/16"-5/8". Our lead screw assemblies are high-helix fast lead, no self-locking or UNC/UNF thread self-locking; or those with precision ball bearing or oil less bronze bearing. We make ant backlash lead screws too. The lead screw is used for thread cutting. It has accurately cut Acme threads along its length that engage the threads of half-nuts in the apron when the half-nuts are clamped over it. The spindle through a gear train drives the lead screw. Therefore, the rotation of the lead screw bears a direct relation to the rotation of the spindle. When the half-nuts are engaged, the longitudinal movement of the carriage is controlled directly by the spindle rotation. Consequently, the cutting tool is moved a definite distance along the work for each revolution that the spindle makes.

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