Lead Screws
Offering smooth, precise, cost effective positioning, this is the “just right” solution for your application.
Thomson BSA precision lead screws are an excellent economical solution for your linear motion requirements. For more than 25 years, Thomson BSA has designed and manufactured the highest quality lead screw assemblies in the industry. Our precision rolling machines ensure accurate positioning to 0.003 in/ft and our PTFE coating process produces assemblies that have less drag torque and last longer.
Thomson BSA provides a large array of standard plastic nut assemblies in anti-backlash or standard Supernut® designs. All of the standard plastic nut assemblies use an internally lubricated Acetal —providing excellent lubricity and wear resistance with or without additional lubrication. With the introduction of the new unique patent pending zero backlash designs, Thomson BSA provides assemblies with high axial stiffness, zero backlash and the absolute minimum drag torque to reduce motor requirements. These designs produce products that cost less, perform better and last longer. Both designs automatically adjust for wear, insuring zero back-lash for the life of the nut.
For significantly higher loads, standard bronze nuts are available. Thomson BSA uses SAE 660 bearing bronze, which provides high load capacity with good PV performance. We also offer end machining to your specification or can provide you with stock bearing mounts or motor mounts.
Simplify the complexity of design and integration on your compact devices
Integrated clutch on our miniature lead screws allows quick and easy connection to the shaft of your motor
As the demand for ever more compact devices in various industries grows, so does the need for smaller and smaller components. To help engineers meet these stringent design requirements, the Thomson range of miniature lead screws, well known for their high quality and linear motion accuracy, are available in diameters from 2mm with integrated coupling. Devices that traditionally could not be made portable or mobile can now be reduced in size and weight without compromising accuracy, durability, function or ease of integration.
Miniature. Small diameters are complemented by tiny anti-backlash nuts that are pre-designed and cataloged as standard.
Configurable. Part of an extensive product offering of standard bolts and nuts, these bolts provide an easily configurable solution for many small or space-constrained applications.
Simple installation. A quick release integrated coupling allows for quick and easy installation using basic hand tools.
Stainless steel lead screw Diameters starting from 2 mm are available!
Did you know that we offer high precision stainless steel lead screws, not only in imperial sizes that are smaller than 5/8" diameter, but in metric sizes down to 2mm diameter? These screws meet very fine levels of precision and can be machined for printing in various custom geometries.
While Thomson's full selection of standard lead screws and nuts continue to meet the needs of countless linear motion designs, the requirements of some applications require customization of these components. Whether it's material or geometry, our proprietary guide bolts and nuts provide great flexibility to help you achieve the 'right' solution.
Our experienced engineers can help ensure that parts selection is right the first time, while our support staff oversees the correct initial application and comprehensive post-installation support.
Customization options available
Geometry of lead matrices
- Assembly features (flange, thread, pressed fit, etc.)
- Body shapes and special elements (cylindrical, rectangular, integrated with adjacent components, etc.)
Nut materials
- Various machined or injected bearing plastics, high PV compounds, etc.
Forms of threads
- Modified ACME and trapezoidal, custom molds with non-standard flange angles, radii, etc.
Bolt configurations/magazines
- Bearing studs, external/internal threads, flats, cross holes, oversized end studs, etc.
