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Thomson Industries – Linear Motion Systems, Actuators, Ball/Lead Screws, Profile Rail

Thomson Brand LogoISC Companies and Adams-ISC can supply the Thomson products listed on this page and others found on the Thomson website. For more information or for a product quote, please contact us by phone 763-559-0033, by email custserv@isccompanies.com, or by filling out our online contact form.

Thomson invented anti-friction linear technology over 70 years ago and has continued to lead the industry ever since. The brand is recognized and trusted as the global leader in mechanical motion technology.

Since being acquired by Altra Industrial Motion in 2018, Thomson has the ability to provide complete system solutions through control, drive, motor, power transmission, and precision linear motion technologies. The Thomson family of motion products also includes BSA, Neff, Tollo, Micron, Deltran, and Cleveland.

Product Groups


Linear Actuators

Electric Linear Actuators

Thomson is the market leader for electric linear actuators used in the most demanding applications. Electric linear actuators are versatile, easy to use and affordable compared to most alternatives. There are many reasons to switch from a pneumatic or hydraulic actuator solution to an electric one. Better controllability, reduced complexity, and better performance with a smaller footprint are the main ones. Other advantages of linear actuators include:

  • Cost Effective: Electric power costs less than hydraulic or pneumatic power and cables are less expensive than tubes and hoses
  • Less Energy Consumption: Electric actuators only need energy when moving; at a standstill, they are self-locking and need no power to keep the position
  • Faster Assembly: Cables are a lot quicker and easier to install and commission
  • Smaller Footprint: An electric actuator system is lightweight and requires little space
  • Reduced Maintenance/Downtime: Less maintenance = lower total cost of ownership

At Thomson, the most advanced actuator models are known as “smart”. They have integrated onboard controls that enhance controllability and allows the user to monitor performance and diagnostics to help increase efficiency and productivity.

The full line of Thomson electric actuators can equip your applications with a variety of capabilities and smart features:

  • Stroke lengths from 1 – 40 in. (25 to 1000mm)
  • Dynamic load ratings from 25 – 3596 lbs. (100 N – 16 kN)Thomson Linear Actuators
  • Speeds from 0.2 – 2.0 in./sec (5 – 50mm/sec)
  • Voltage choices:
    • 12 VDC, 24 VDC, 36 VDC, 90 VDC
    • 115 VAC, 230 VAC, 400 VAC
  • Duty cycle minimum of 25%
  • IP ratings of: IP65, IP66, IP67, IP69K
  • Available with overload clutches, electronic load sensing, limit switches, analog and digital feedback, J1939 CAN bus, LIN bus

Precision Linear Actuators

Thomson Precision Linear ActuatorsThomson precision linear actuators are designed to deliver high performance in applications requiring continuous duty operation. They provide the highest thrust and speed of any electric actuator and allow you to design more compact machinery with maximum throughput. Often chosen as a clean and efficient alternative to fluid power solutions, precision linear actuators draw energy only on demand and operate more quietly than pneumatics.

Stepper Motor Linear Actuators

Thomson Stepper Motor Linear ActuatorsThomson stepper motor linear actuators combine a hybrid stepper motor and a precision lead screw in one compact envelope. Thomson stepper motor linear actuators are offered in three basic configurations – rotating screw (MLS), rotating nut (MLN), and actuator (MLA).

The open rotating screw and rotating nut assemblies suit applications where external guidance is present or a high level of design flexibility is required. The closed assembly is ideal to further simplify the design process and remove requirements for external guidance.

Worm Gear Screw Jacks

Thomson Screw JacksThomson’s worm gear screw jacks MULI and JUMBO set new engineering standards for precision and reliability. Pre-assembled modules can be customized to your application’s specifications.

  • Trapezoidal screw for rough conditions and good price/performance ratio
  • Ball screw for long duty cycle, high efficiency, and high positioning accuracy

Linear Bearings and Guides

Linear Ball Bushing Bearings

Thomson offers several families of inch or metric linear bearings including the Super Smart Ball Bushings, with load capacities up to 7760 lb. When used with RoundRail linear guides, the inherent self-aligning design allows for ultra-smooth travel when mounted to wider-toleranced prepared surfaces. When used with Thomson 60 Case shafting, linear bearings last up to 50% longer than conventional bearings.

  • Most extensive product offering in the industry
  • Pre-assembled, ready-to-install stages provide low friction and smooth, accurate motion

RoundRail Shafting

RoundRail shafting is manufactured to the highest quality standards to provide industry leading surface finish, roundness, straightness, and cylindricity. Thomson offers the widest selection of linear shafting in the industry to ensure optimal performance, minimal maintenance, and long life.

Profile Rail Linear Guides

Thomson has a complete offering of rails and carriages in a broad range of styles, sizes, and unique features produced to industry-standard dimensions.

  • Profile Rail 400 Series: Wide product offering featuring double-faced ball bearing design
  • Profile Rail 500 Series: Exceptional straightness, rigidity, load capacity, and accuracy
  • MicroGuide Series: Miniature linear guides as small as 5mm in 440C stainless steel
  • T Series: Lightweight rail made from aircraft-grade aluminum
  • AccuMini: Reduced friction to provide smooth, quiet operation at high speeds

RoundRail Linear Guide Systems

Pre-assembled, ready to install stages providing low friction, smooth, accurate motion for a wide range of moment or normal loading configurations. The ability of a RoundRail Ball Bushing bearing system to accommodate torsional misalignment (caused by inaccuracies in carriage or base machining or deflection) with little increase in stress to the bearing components.


Glide Screws, Lead Screws, Ball Screws

Glide Screws

The patented Thomson Glide Screw combines the features of a linear bearing and a lead screw in one smooth operating package that delivers high performance, fast installation, and less complexity.

  • Easy and fast to install and maintenance freeThomson Glide Screw
  • Reduced footprint, improved equipment uptime and lower cost of ownership
  • Metric and inch options available
  • Integrated lubrication block

Lead Screws Supernuts

Thomson BSA precision lead screws are an excellent economical solution for your linear motion requirements. Thomson BSA designs and manufactures the highest quality lead screw assemblies in the industry. Precision rolling machines ensure accurate positioning to 0.003 in/ft and a PTFE coating process produces assemblies that have less drag torque and last longer.

  • Rolled precision stainless steel screws
  • V-threads available for fine positioning resolutions
  • Lead nuts come in a standard threaded or flanged mounting configuration
  • Anti-backlash nuts for the best positional repeatability
  • Bronze nuts for heavy duty applications

Motorized Lead Screws and Ball Splines

Thomson Motorized Lead ScrewThomson Motorized Lead Screws are high-quality, precision lead screw assemblies that provide an excellent economical solution for your linear motion requirements.

  • Rolled precision stainless steel screws
  • V-threads available for fine positioning resolutions
  • Lead nuts come in a standard threaded or flanged mounting configuration
  • Anti-backlash nuts for the best positional repeatability
  • Bronze nuts for heavy duty applications

Thomson Ball Splines feature high speed, anti-friction linear motion under high torsional loads. They have high reliability and a predictable life expectancy.

  • Thomson Ball SplineAnti-friction linear travel by ball recirculation
  • Resistance to radial displacement resulting from torque loads
  • Minimal lash resulting from wear and elimination of stick-slip
  • Minimized friction reduces heat, preventing seizure
  • Custom machined keyways are available for both inner and outer race

Ball Screws

The ball screw drive is an assembly that converts rotary motion to linear motion (or vice versa).  It consists of a ball screw and a ball nut packaged as an assembly with recirculating ball bearings.  With rolling elements, the ball screw drive has a very low friction coefficient and is typically greater than 90% efficient. The forces transmitted are distributed over a large number of ball bearings, giving a low relative load per ball comparatively.

  • High Load Series: handles maximum dynamic loads up to 1440 kN
  • Miniature Precision Rolled Series: efficient, cost-effective solution in a small envelope
  • Precision Rolled Series: a comprehensive offering of low-cost, high-precision metric and inch ball screws
  • Precision Plus Metric Ground Series: high repeatability, accuracy, and stiffness

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ISC Companies and affiliate Adams-ISC are industrial distributors of bearings and mechanical power transmission parts. We have many different models and brands in stock for fast delivery. Our sales professionals are happy to assist you in the selection process to ensure the correct part is specified for your application. Get a quote by clicking below on “Request Pricing” and filling out the contact form or give us a call at 1-800-627-9434.

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