Lead and acme screws

A great lead nut can’t perform without a top quality lead screw.  Thomson BSA® screws are constructed of 300 series stainless steel and offer a high luster surface finish with excellent corrosion resistance.  Standard sizes are available from 3/16” to 3” diameters.  All lead screws are precision rolled to achieve lead accuracies of up to .003 inch per foot.  We use optimized thread forms on most sizes to achieve the best possible performance when used with our polymer nuts.  We also configure the ends of the majority of the screws we ship to customer requirements. 

 

Trapezoidal Screws

 

The trapezoidal thread form is a common leadscrew thread profile that offers high strength with ease of manufacture.

It is typically found where large loads or high accuracy are required, as in a vise or the lead screw of a lathe.

Standardized variations include multiple-start threads, left-hand threads, and self-centering threads which are less likely to bind under lateral forces. The thread angle is 30°.

• D= 10 – 80 mm
• pitch: 2 – 24 mm
• Lmax: 6000 mm

 

Glide Screws

Part linear bearing, part lead screw, the Glide Screw™ from Thomson combines the best features of these products into an easy to install, one-part solution.

In addition, the Glide Screw eliminates alignment issues and comes standard with Thomson’s patented Lube-for-Life technology for zero maintenance.

Additional high heat, vacuum/cleanroom, and food grade configurations are available.

 If you don’t see a standard model that meets your needs, contact Thomson - we do custom configurations upon request.

 

Motorised Lead Screws

Motorised Lead Screws from Thomson combine a hybrid stepper motor and a precision lead screw together in one compact envelope.

Patent-pending Taper-Lock technology allows quick decoupling and secure, properly aligned connections.

Thomson Motorised Lead Screws come in two basic configurations – rotating screw (S) and rotating nut (N).

Rotating screw assemblies actuate by having the motor rotate a lead screw and translate a load that is attached to the lead nut.

Rotating nut assemblies actuate by rotating a nut within the motor body.

Motion is achieved by constraining the motor and translating a load attached to the lead screw or constraining the lead screw and translating a load attached to the motor.