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Electric Rod Actuators

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Tolomatic offers a wide variety of electric rod actuator/cylinder solutions from low cost to high performance.

Product Lineup

RSA-ST Electric Linear Rod Actuators

Tolomatic RSA-ST Electric Linear Rod Actuators
The RSA-ST electric linear rod actuator combines excellent accuracy with a low-to-medium thrust capacity
RSA-ST electric linear rod actuators feature accurate, medium force performance making them ideal for replacing pneumatic cylinders. High thrust bearings and internal bumpers deliver heavy duty performance. A rigid, strong aluminum housing allows for easy mounting of switches and sensors. These electric linear rod actuators are suitable for pneumatic replacement, general motion control applications and many more.

  • 6 body sizes with built-to-order stroke lengths of 12 to 60 inches (305 to 1,524 mm)
  • Maximum thrusts of up to 4,038 lbf (40,257 N)
  • Solid, ball and bronze screw/nut combinations
  • Available with low-backlash ball screw/nut
  • Multiple mounting options

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RSA-HT Heavy Duty, High Force Electric Rod Actuators

Tolomatic RSA-HT Heavy Duty, High Force Electric Rod Actuators
Heavy duty electric rod actuator ideal for applications requiring high force performance in tough environments.
The RSA-HT heavy duty electric rod actuator accommodates larger motors and delivers high force with excellent accuracy. These high force electric linear actuators feature ball or roller screw selections, an enhanced high thrust bearing and heavy duty internal bumpers. The standard grease zerk extends screw life by making relubrication easy and convenient without dissassembly. RSA-HT actuators are suitable for valve actuation, punch press, injection molding applications and many more.

  • 4 body sizes with stroke lengths from 18 to 60 inches (457 to 1,524 mm)
  • Maximum force/thrust up to 13,039 lbf (58,001 N)
  • Positional accuracy of +/- 0.0004″/ft (+/- 0.0102mm/300mm) for roller screw actuators or +/- 0.002″/ft (+/- 0.051mm/300mm) for ball screw models
  • Optional IP67 linear actuator configuration available to protect against dust and moisture

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GSA Linear Slide Actuators

Tolomatic GSA Linear Slide Actuators
The GSA linear slide actuator is ideal for medium- to high-thrust applications.
GSA Linear Slide Actuators combine an electric rod actuator with guide rods, mounting blocks and bearings. A complete selection of sizes, options and system components are available. The GSA Linear Slide Actuator offers high performance, dependability and mounting flexibility for pivotal applications.

  • 4 U.S. customary and metric body sizes
  • Thrust capacities range from 0.31 to 4.2 kN (70 to 950 lbf)
  • Wide tooling plate for end effector mounting
  • Choice of linear ball or composite bearings with internal lubrication of guide rods for increased bearing life
  • Standard or oversized guide rod diameter for increased rigidity and lower deflection
  • Strokes in any incremental length up to 914 mm (36 in) depending on body size

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RSX Extreme Force Electric Linear Actuators

Tolomatic RSX Extreme Force Electric Linear Actuators
Replace hydraulics to eliminate messy leaks and increase system performance
The RSX family of extreme force electric linear actuators are more efficient and offer increased precision compared to hydraulic cylinders. Tolomatic precision ground planetary roller screws are utilized to achieve long life and precision. The RSX platform is designed and tested for long life and reliable performance in demanding conditions including cold weather operation. The RSX family includes two frame sizes capable of achieving 18,000 lbf to 30,000 lbf (80 kN to 133 kN) max force.

RSX extreme force electric linear actuators offer these features:

  • Planetary roller screw driven for long consistent life
  • Type III hard coat anodized aluminum housing to withstand demanding environments
  • Standard thrust rod anti-rotation feature
  • IP67 rated for water, dust and corrosion resistance
  • Compatible with servo motors and gearboxes up to 215mm frame sizes
  • Available with white epoxy coating and stainless steel thrust rod (Contact Tolomatic)

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RSX096 Press Electric Linear Actuators

Tolomatic RSX096 Press Electric Linear Actuators
Designed for Pressing, Punching, Clinching, Joining & other applications requiring extreme force
The RSX Press is an extreme force electric linear actuator that is more efficient, reliable and precise than hydraulic cylinders used in pressing (extend force) applications. Tolomatic precision ground planetary roller screws are utilized to achieve long life and precision. The RSX platform is designed and tested for long life and reliable performance in demanding force and duty cycle applications.

RSX extreme force electric linear actuators offer these features:

  • Forces up to 50,000 lbf (222 kN) in the extend direction
  • Upgrades: Oversized tie-rods, optimized bearing system & higher strength front flange
  • Planetary roller screw driven for long consistent life
  • Type III hard coat anodized aluminum housing to withstand demanding environments
  • Standard thrust rod anti-rotation feature
  • IP67 option to protect against dust and water ingress
  • Compatible with servo motors and gearboxes up to 215mm frame sizes

RSH Hygienic Electric Rod Style Actuators

Tolomatic RSH Hygienic Electric Rod Style Actuators
RSH hygienic electric actuators feature 316 stainless steel construction and IP69K
Tolomatic’s line of hygienically designed all stainless steel electric actuators offer up to 7,943 lbf (35.3 kN) and they are the perfect solution for food and beverage applications where higher forces are required for pressing, pumping, cutting or slicing. Use the Tolomatic Your Motor Here® database to select from a wide variety of stainless steel motor manufacturers for a complete all stainless package.

  • 3 body sizes with 316 series stainless steel construction
  • Ball and roller screw options
  • Force/thrust capabilities up to 7,868 lbf (35 kN)
  • Stroke lengths up to 48 inches (1.2 m)
  • IP69K, clean in place compatible

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ERD-SS2 Stainless Steel Electric Actuators with Integrated Motor

Tolomatic ERD-SS2 Stainless Steel Electric Actuators with Integrated Motor
ERD stainless steel electric actuators are IP69k rated and are washdown ready.
The all stainless steel ERD actuator with integrated motor in protective enclosure (ERD-SS2) accommodates both servo (23-frame) and stepper (NEMA 17 and NEMA 23-frame) motors. Combine any ERD-SS2 with the Tolomatic ACS servo or stepper drive and get a complete motion control system with high performance at a very competitive price.

  • 3 body sizes
  • Ball and acme screw choices
  • Force/thrust capabilities up to 500 lbf (2.2 kN)
  • Stroke lengths up to 24 inches (610 mm)
  • Choice of stepper and servo drive/controller and motor solutions
  • Clean-in-place compatible
  • Simplifies and lowers cost of machine design by eliminating protective guards around standard actuators

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ERD Low-cost Electric Cylinders for Pneumatic Cylinder Replacement

Tolomatic ERD Low-cost Electric Cylinders for Pneumatic Cylinder Replacement
ERD low-cost electric cylinder series are the perfect alternative to pneumatic cylinders for automating manual processes.
The ERD is an economical electric cylinder and is compatible with many NEMA & metric mount stepper and servo motors to create a flexible, powerful, yet cost-effective electric cylinder solution over traditional pneumatic cylinders.

Perfect for gating, sorting, diverting and product change overs, ERD electric cylinders offer these features:

  • 4 body sizes
  • Ball and acme screw choices
  • Force/thrust capabilities up to 500 lbf (2.2 kN)
  • Stroke lengths up to 24 inches (610 mm)
  • Guide and anti-rotate options
  • Stepper and servo drive/controller and motor solutions
  • IP67 and IP69K options
  • All stainless steel body options

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ERD Hygienic (3A/USDA approved) Electric Actuators

Tolomatic ERD Hygienic (3A/USDA approved) Electric Actuators
ERD hygienic electric actuators are approved by 3A and USDA for food and beverage applications.
Tolomatic’s line of hygienically designed all stainless steel electric actuators offer up to 7868 lbf (35 kN) and they are the perfect solution for food and beverage applications where higher forces are required for pressing, pumping, cutting or slicing. Use the Tolomatic Your Motor Here® database to select from a wide variety of stainless steel motor manufacturers for a complete all stainless package.

  • 3 body size
  • Ball, acme and roller screw choices
  • Force/thrust capabilities up to 7,868 lbf (35 kN)
  • Stroke lengths up to 39.4 inches (1 m)
  • IP69K with all stainless steel construction is standard
  • USDA and 3A (#14159-1-2010) approved hygienic option for over food operation
  • Standard 15-day built-to-order shipping
  • Clean-in-place compatible
  • Simplifies and lowers cost of machine design by eliminating protective guards around standard actuators

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IMA-S Hygienic Integrated Stainless Steel Servo Actuators

Tolomatic IMA-S Hygienic Integrated Stainless Steel Servo Actuators

Designed for the most demanding food and beverage applications
The IMA-S is a hygienically designed integrated electric servo actuator for the food and beverage processing industry. The IP69K hygienic design features all 316 stainless steel construction and hygienic fasteners/cord grips which allows for open machine designs and effective clean-in-place.

Supports Third Party Drive Integration

Tolomatic’s integrated motor products (IMA & IMAS) support integration with a wide range manufacturers’ servo drives. Check back often to our Drive Integration Resource page as we will continue to add supporting documentation and motor files. Tolomatic also supports seamless integration with Rockwell Automation through the use of approved custom motor files (CMF) and as a Technology and Encompass partner. See our Tech Notes on using the CMF import tool and interfacing the IMA actuator and absolute encoder with Rockwell Automation servo drives.

The product line also includes the IMA-SA model which incorporates an internal anti-rotate feature eliminating the need for an external guidance mechanism making it a perfect actuator for applications such as volumetric filling and pumping.

Feedback options include multi-turn absolute encoders (Hiperface DSL, Hiperface Sin-Cos, EnDat 2.2), incremental encoder, and a resolver to integrate with most PLC or control systems. IMA-S servo motor has simple integration with Rockwell Automation (Allen-Bradley) Kinetix platform through pre-existing motor files (CMF/BLB) for easy drive and PLC integration.

Improve your hygienic machine design with IMA-S food grade actuators

  • Provides complete control over speed and position at all times
  • Hygienic design to allow for food grade cleaning and sanitizing
  • Resists corrosion with 316 stainless steel body
  • Provides IP69k wash-down protection with blue seals/o-rings and hygienic fasteners/cord grips
  • Improves performance, flexibility and efficiency in comparison to fluid power technologies

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IMA Food Grade Servo Actuator


The IMA food grade servo linear actuator offers sanitary protection in wash-down applications.
IMA food grade servo actuators offer a white epoxy food grade coating, food grade grease and are available with stainless-steel fasteners, rod and rod ends. Using the same integrated servo motor design as IMA servo linear actuators they offer a compact footprint. Available in both ball and roller screw configurations, IMA food grade servo actuators provide forces up to 30.6 kN (6875 lbf) even in high duty cycle applications. The standard servo motor is available with many feedback types to integrate with most servo drives.

Seamless integration with Rockwell Automation Kinetix platform with approved custom motor files (CMF/BLB) for the PLC and integrated motor actuator. See our Tech Notes on using the CMF import tool and interfacing the IMA actuator and absolute encoder with Allen Bradley servo drives.

Get sanitary protection and long service life with IMA food grade servo actuators

Tolomatic’s patented re-lubrication design offers easy re-lubrication with food grade grease and do not require disassembly for reduced maintenance.

Tolomatic IMA food grade servo actuator design eliminates:

  • Contamination from air or oil
  • Hydraulic systems
  • Pneumatic systems
  • Forced air or water cooling
  • Need for multiple vendors
  • Unneeded assembly labor
  • Motor couplers, adapters, timing belts and gear boxes

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IMA Linear Servo Actuators

Tolomatic IMA Linear Servo Actuators
The IMA servo linear actuator has a unique integrated servo motor design.
The IMA is an integrated linear servo actuator design in a compact, heavy duty package. Available in both ball and roller screw configurations, the IMA servo linear actuators provide forces up to 30.6 kN (6875 lbf) even in high duty cycle applications. The IMA utilizes a standard servo motor available with many feedback types. Available in food-grade coating for sanitary wash-down applications.

Seamless integration with Rockwell Automation Kinetix platform with approved custom motor files (CMF/BLB) for the PLC and integrated motor actuator. See our Tech Notes on using the CMF import tool and interfacing the IMA actuator and absolute encoder with Allen Bradley servo drives.

Get extremely long service life with IMA linear servo actuators

Utilizing Tolomatic’s patented re-lubrication design, the IMA heavy duty linear servo actuators can easily be re-lubricated without disassembly for extremely long service life.

IMA linear servo actuator simplifies mechanical design.

Tolomatic’s unique integrated linear servo actuator design eliminates:

  • Hydraulic systems
  • Pneumatic systems
  • Contamination from air or oil
  • Motor couplers, adapters, timing belts and gear boxes
  • Forced air or water cooling
  • Need for multiple vendors
  • Unneeded assembly labor

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Roller Screws

Tolomatic Roller Screws

High Force and Efficient Operation in a
Compact Package
Roller screws (also called planetary roller screws) have precision-ground screw threads that match multiple precision-ground rollers in the nut. These rolling elements transmit force very efficiently. Roller screw components provide more points of contact allowing for higher force capability and longer life. Tolomatic roller screws have a very deep case (surface) hardness and high Dynamic Load Rating (DLR*).

For many years, Tolomatic has manufactured thousands of roller screws per year for actuators and installed them in applications around the world. Tolomatic now offers these roller screws for sale as component parts as well as incorporated in actuators.

Manufactured in the United States using state-of-the-art equipment to ensure strict tolerances and the highest quality standards confirming that each roller screw provides top-tier performance

Tolomatic Planetary Roller Screws:

  • Verified and tested extensively in Tolomatic’s research & development lab
  • Proven long, reliable life in thousands of demanding applications world-wide
  • Configurable stroke lengths
  • Allows for smaller, lighter weight designs and machine concepts
  • Industry best lead times

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ServoPlace™ Precision Nut Placement

Tolomatic ServoPlace™ Precision Nut Placement

The ServoPlace System is a smart high speed electric solution specifically designed for precision nut & bolt (stud) placement in projection welding applications.

Replacing pneumatic cylinders provides:

  • Increased line speed and extended life
  • Dramatic reduction in misplaced parts
  • Simplified system setup

ServoChoke® SVC Electric Choke Valve Actuator / Operator

Tolomatic ServoChoke® SVC Electric Choke Valve Actuator / Operator
ServoChoke® SVC is a high performance linear integrated electric choke valve actuator that meets the rigorous needs of the oil and gas industry. The SVC provides a more reliable, high-speed, precision electric choke operator in performance drilling applications vs. conventional hydraulics or jack screw assemblies. The ServoChoke SVC is perfect for Managed Pressure Drilling (MPD), Set-point choke control and Choke & Kill for well control applications.
The actuator’s integrated servo motor, gear box and planetary roller screw enables the ServoChoke SVC to quickly and continuously modulate with the highest accuracy and repeatability. With global certifications for ATEX, IECEx, and Class I Div. 1 together with a temperature rating of -40° C to +60° C, the all steel, SVC actuator is designed to perform in the harshest environments.

  • Globally certified: CID1 • ATEX • IECEx
  • Worry-free performance in the most hazardous location environments
  • Speeds up to 19.6 mm/sec (0.77″/sec) – open/close choke in less than 3.2 seconds
  • 3 mm (0.125″) adjustments happen in less than 0.5 second
  • Temperature range: -40° to +60°C (-40° to +140° F)
  • Positional repeatability to within 0.08% of span or better
  • Planetary roller screw for long life and no maintenance
  • Fully integrated motor/actuator/feedback in a single, sealed housing
  • Rugged NACE MR0175 compliant steel body

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