Supernuts & Lead Screws
Ball Screws
3/8" to 3/4" - Spec's
3/8" to 3/4" - Nut Dim's
3/8" to 3/4" - Preloaded Dim's
1" to 1 1/2" - Spec's
1" to 1 1/2" - Nut Dim's
1" to 1 1/2" - Preloaded Dim's
2" to 4" - Spec's
2" to 4" - Nut Dim's
2" to 4" - Preloaded Dim's
4mm to 14mm Miniature
16mm to 38mm Ground
25mm to 50mm Ground
Drive Assemblies
NEMA 17 Motor Mount
NEMA 23 Motor Mount
NEMA 34 Motor Mount
NEMA 42 Motor Mount
Flange Mount Bearing
Base Mount Bearing
Stock Stages
T23 Stock Stage
T34 Stock Stage
T42 Stock Stage
Round Rail Guides
Full Support - Std Block
Full Support - Twin Block
End Support - Std Block
End Support - Twin Block
Profile Rail Guides
Beam Style Couplers
Three Piece Couplers
Mounting Flanges

Offering smooth, precise, cost effective positioning, our lead screws are the right solution for your application. Thomson BSA precision lead screws are an excellent economical solution for your linear motion requirements. Our precision rolling process ensures accurate positioning to 0.003 in/ft and our PTFE coating process produces assemblies that have less drag torque and last longer.
Lead Screws
When load capacity and efficiency are of paramount importance, Thomson BSA ball screws can get the job done. With standard accuracies available from .010 in/ft to .0003 in/ft, you know you’ll be able to get to the right position also.
Ball Screws
Let Thomson BSA supply your screw already mounted in bearing supports or also with a NEMA ready motor mount. Why worry about end machining configurations and bearing selection when you can purchase a pre-configured screw assembly to meet your needs.
Drive Assemblies
Our Stock Stage assemblies offer a complete mechanical solution for your motion application. These units are ready to attach a load to, complete with linear guides, a ball or lead screw, bearing supports and a NEMA ready motor mount. Simply attach your motor and you’re ready to go.
Stock Stages
Every screw needs a good linear guide by its side. Round rail bearings And shafts provide design flexibility, ease of installation and smooth operation. They work well with either our lead screw or ball screw assemblies.
Round Rail Guides
For applications requiring the utmost in stiffness and load capacity, try our profile rail guides. They offer high moment capacities in all axis so they can be used in pairs or as a single rail with one or two blocks.
Profile Rail Guides
Whether you need a coupler, some grease or a flange for your screw, Thomson BSA has the right products. Check out our accessories and remember, a quality lubricant goes a long way to extending the life of your linear motion system.

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