•    ROTARY   ROTARY
    • Rotary Actuators

      Compact

      Torque: 9 in-lb*
      Shaft: 1/4" or 3/8"
      Diameter
      *80psi

      Torque: 7-14 in-lb*
      Shaft: 1/4"
      Diameter
      *80 psi

      Torque: 35 in-lb*
      Shaft: 3/8"
      Diameter
      *80 psi

      Single Rack Tie-Rod

      Torque: 6 in-lb*
      Shaft: 3/16" or 1/4"
      Diameter
      *80psi

      Torque: 12 in-lb*
      Shaft: 1/4" or 3/8"
      Diameter
      *80 psi

      Torque: 39 in-lb*
      Shaft: 1/2"
      Diameter
      *80 psi

      Torque: 119 in-lb*
      Shaft: 3/4"
      Diameter
      *80 psi

      Torque: 277 in-lb*
      Shaft: 1" or 1 1/8"
      Diameter
      *80 psi

      Dual Rack Tie-Rod

      Torque: 24 in-lb*
      Shaft: 1/4" or 3/8"
      Diameter
      *80psi

      Torque: 78 in-lb*
      Shaft: 1/2"
      Diameter
      *80 psi

      Torque: 238 in-lb*
      Shaft: 3/4"
      Diameter
      *80 psi

      Torque: 545 in-lb*
      Shaft: 1" or 1 1/8"
      Diameter
      *80 psi

  • MULTI-POSITIONMULTI-POSITION
  •    INDEXING   INDEXING
    • Indexing Actuators

      Single Rack

      Torque: 9 in-lb*
      Shaft: 3/8*
      Diameter
      *60psi

      Torque: 29 in-lb*
      Shaft: 1/2"
      Diameter
      *60psi

      Torque: 89 in-lb*
      Shaft: 3/4"
      Diameter
      *60psi

      Torque: 208 in-lb*
      Shaft: 1"
      Diameter
      *60psi

      Dual Rack

      Torque: 18 in-lb*
      Shaft: 3/8"
      Diameter
      *60psi

      Torque: 59 in-lb*
      Shaft: 1/2"
      Diameter
      *60psi

      Torque: 179 in-lb*
      Shaft: 3/4"
      Diameter
      *60psi

      Torque: 415 in-lb*
      Shaft: 1"
      Diameter
      *60psi

  • STEPPINGSTEPPING
    • Stepping Actuators

      Single Rack

      Torque: 12 in-lb*
      Shaft: 3/8"
      Diameter
      *80psi

      Torque: 39 in-lb*
      Shaft: 1/2"
      Diameter
      *80psi

      Torque: 119 in-lb*
      Shaft: 3/4"
      Diameter
      *80psi

      Torque: 277 in-lb*
      Shaft: 1"
      Diameter
      *80psi

  • P & PP & P
  • NITPICKERNITPICKER
  • SMASMA

rotary actuator

  • A12 3-Pos Rotary Actuator

    A12 3-Position Rotary Actuator

    a12 3-position rotary actuator
    A12 Dual RAck 3-Position Rotary Actuator

    Overview

    With internal stops for an intermediate position, our A12 three-position actuator has overall dimensions that are similar to those of its two-position counterpart, the A12 rotary actuator. Output torque is that of a single rack unit but it can rotate to any of its 3 positions in any sequence by simply activating the proper directional control valve.

    Specifications:

    • 3-Position Rotary Actuator
    • Bore Size = 5/8"
    • Standard Rotations = From 30 to 730 total
    • Shaft Sizes = Standard: .375" dia., Options: .250" dia., D .375" dia., & HS .375" I.D.
    • Torque at 80 psi = 12 in-lbs.
    • Ball Bearing Ratings = Radial: 305 lbs., Axial: 76 lbs.
    • Port Size = 10-32 or 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Hollow Shaft
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A12 3-Position Rotary Actuator Part Numberpage for detailed configuration and option information.

    But if you're looking for precise unidirectional sequential steps, consider our X1 Indexing Actuator.

    For increased torque output, consider the A22 3-Position Actuator.

    Compare All 3-Position Rotary Actuators

  • A12 Rotary Actuator

    A12 Rotary Actuator

    A12 rotary actuator

    Overview

    The A12 rotary actuator can be configured into over two billion standard configurations that can be assembled to order and shipped within a few days. The A12 shares many of the same construction features and options with its bigger counterparts. The A12 has been tested to 20 million maintenance-free duty cycles. Ball bearings and a one piece, heat treated alloy steel pinion shaft complete the rugged, flexible dual rack construction of this proven workhorse.

    Specifications:

    • 2-Position Rotary Actuator
    • Bore Size = 5/8"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .375" dia., Options: .250" dia., D .375" dia., & HS .375" I.D.
    • Torque at 80 psi = 24 in-lbs.
    • Ball Bearing Ratings = Radial: 305 lbs., Axial: 76 lbs.
    • Port Size = 10-32 or 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Hollow Shaft
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A12 Rotary Actuator Part Numberpage for detailed configuration and option information.

    Looking for the 3-Position version, see A12 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X1 Indexing Actuator.

    For increased torque output, consider the A2 Rotary Actuator.

    Compare All Dual Rack Tie Rod Rotary Actuators

  • A2 Rotary Actuator

     

    A2 Rotary Actuator

    a2 rotary actuator
    A2 Tie Rod Pneumatic Rotary Actuator

    Overview

    The A2 incorporates all the design features that have made our 1 to 2-inch bore actuator line the standard in the industry for reliability and configurability. Floating pistons and a precision ground rack riding in replaceable sintered bronze bearings provide enhanced durability. The one piece, heat treated alloy steel pinion shaft is supported by large sealed ball bearings and it can be customized to suit your load. 

    Specifications:

    • Bore Size = 1"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .500" dia., Options: D .500" dia. & HS .375" I.D. dia.
    • Torque at 80 psi = 39 in-lbs.
    • Ball Bearing Ratings = Radial: 1,030 lbs., Axial: 257 lbs.
    • Port Size = 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A2 Rotary Actuator Part Number page for detailed configuration and option information.

    Looking for a three-position version, see A22 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X2 Indexing Actuator.

    For double the output torque and zero backlash, consider our Dual Rack A22 Rotary Actuator.

    Compare All Single Rack Tie Rod Pneumatic Rotary Actuators

  • A22 3-Pos Rotary Actuator

    A22 3-Position Rotary Actuator

    a22 3 position rotary
    A22 3-Position Dual Rack Rotary Actuator

    Overview

    With internal stops for an intermediate position, our A22 three-position actuator has overall dimensions that are similar to those of its two-position counterpart, the A22 Rotary Actuator. Output torque is that of a single rack unit but it can rotate to any of its 3 positions in any sequence by simply activating the proper directional control valve.

    Specifications:

    • 3-Position Rotary Actuator
    • Bore Size = 1"
    • Standard Rotations = From 30 to 730 degrees total
    • Shaft Sizes = Standard: .500" dia., Options: D .500" dia. & HS .375" I.D.
    • Torque at 80 psi = 39 in-lbs.
    • Ball Bearing Ratings = Radial: 1,030 lbs., Axial: 257 lbs.
    • Port Size = 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A22 3-Position Rotary Actuator Part Numberpage for detailed configuration and option information.

    But if you're looking for precise unidirectional sequential steps, consider our X2 Indexing Actuator.

    For increased torque output, consider the A32 3-Position Actuator.

    Compare All 3-Position Rotary Actuators

  • A22 Rotary Actuator

    A22 Rotary Actuator

    a22 rotary actuator
    A22 Dual Rack Rotary Actuator

    Overview

    The A22 rotary actuator can be configured into over two billion standard configurations that can be assembled to order and shipped within a few days. It shares many of the same construction features and options with its bigger counterparts. Its dual rack construction allows for expanded options combination flexibility. Ball bearings and a one-piece, heat-treated alloy steel pinion shaft make this rugged, flexible actuator one of the favorites. 

    Specifications:

    • 2-Position Rotary Actuator
    • Bore Size = 1"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .500" dia., Options: D .500" dia. & HS .375" I.D.
    • Torque at 80 psi = 78 in-lbs.
    • Ball Bearing Ratings = Radial: 1,030 lbs., Axial: 257 lbs.
    • Port Size = 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Washdown Protection
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A22 Rotary Actuator Part Number page for detailed configuration and option information.

    Looking for the 3-Position version, see A22 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X2 Indexing Actuator.

    For increased torque output, consider the A3 Rotary Actuator.

    Compare All Dual Rack Tie Rod Rotary Actuators

  • A3 Rotary Actuator

    A3 Rotary Actuator

    a3 rotary actuator
    A3 Tie Rod Pneumatic Rotary Actuator

    Overview

    The A3 incorporates all the design features that have made our 1 to 2-inch bore actuator line a standard in the industry for reliability and configurability. Floating pistons and a precision ground rack riding in replaceable sintered bronze bearings provide enhanced durability. The one piece, heat treated alloy steel pinion shaft is supported by large sealed ball bearings and it can be customized to suit your load. 

    Specifications:

    • Bore Size = 1 3/8"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .750" dia., Options: D .750" dia., HS .750" I.D., & HS .625" I.D.
    • Torque at 80 psi = 119 in-lbs.
    • Ball Bearing Ratings = Radial: 2,020 lbs., Axial: 500 lbs.
    • Port Size = 1/4 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

     See the A3 Rotary Actuator Part Number page for detailed configuration and option information.

    Looking for the three-position version, see A32 3-Position Actuator.

    If you need precise unidirectional sequential steps, jump to X3 Indexing Actuator.

    For double the output torque and zero backlash, consider our Dual Rack A32 Rotary Actuator.

    Compare All Single Rack Tie Rod Rotary Actuators

  • A32 3-Pos Rotary Actuator

    A32 3-Position Rotary Actuator

    a32 3 position rotary
    A32 3-Position Dual Rack Rotary Actuator

    Overview

    With internal stops for an intermediate position, our A32 three-position actuator has overall dimensions that are similar to those of its two-position counterpart, the A32 rotary actuator. Output torque is that of a single rack unit but it can rotate to any of its 3 positions in any direction, in any sequence by simply activating the proper directional control valve.

    Specifications:

    • 3-Position Rotary Actuator
    • Bore Size = 1 3/8"
    • Standard Rotations = From 30 to 730 degrees total
    • Shaft Sizes = Standard: .750" dia., Options: D .750" dia., HS .750" I.D., & HS .625" I.D.
    • Torque at 80 psi = 119 in-lbs.
    • Ball Bearing Ratings = Radial: 2,020 lbs., Axial: 500 lbs.
    • Port Size = 1/4 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Washdown Protection
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A32 3-Position Rotary Actuator Part Number page for detailed configuration and option information.

    But if you're looking for precise unidirectional sequential steps, consider our X3 Indexing Actuator.

    For increased torque output, consider the A42 3-Position Actuator.

    Compare All 3-Position Rotary Actuators

  • A32 Rotary Actuator

    A32 Rotary Actuator

    a32 rotary actuator

    Overview

    The A32 can be configured into over two billion standard configurations that can be assembled to order and shipped within a few days. It shares many of the same construction features and options with its bigger counterpart, the A42. Its dual rack construction allows for expanded flexibility of options combination. Ball bearings and a one-piece, heat-treated alloy steel pinion shaft make this rugged, versatile actuator an excellent choice for the most demanding applications.

    Specifications:

    • 2-Position Rotary Actuator
    • Bore Size = 1 3/8"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .750" dia., Options: D .750" dia., HS .750" I.D., & HS .625" I.D.
    • Torque at 80 psi = 238 in-lbs.
    • Ball Bearing Ratings = Radial: 2,020 lbs., Axial: 500 lbs.
    • Port Size = 1/4 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A32 Rotary Actuator Part Number page for detailed configuration and option information.

    Looking for a 3-Position version, see A32 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X3 Indexing Actuator.

    For increased torque output, consider the A4 Rotary Actuator.

    Compare All Dual Rack Tie Rod Rotary Actuators

  • A4 Rotary Actuator

    A4 Rotary Actuator

    a4 rotary actuator
    A4 Tie Rod Pneumatic Rotary Actuator

    Overview

    The A4 incorporates all the design features that have made our 1 to 2-inch bore actuator line the standard in the industry for reliability and configurability. Floating pistons and a precision ground rack riding in replaceable sintered bronze bearings provide enhanced durability. The one piece, heat treated alloy steel pinion shaft is supported by large sealed ball bearings and it can be customized to suit your load. 

    Specifications:

    • Bore Size = 2"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: .1.000" dia. or 1.125" dia., Options: D 1.000", dia., D 1.125" dia., & HS .750" I.D.
    • Torque at 80 psi = 277 in-lbs.
    • Ball Bearing Ratings = Radial: 2,020 lbs., Axial: 500 lbs.
    • Port Size = 1/4 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A4 Rotary Actuator Part Numberpage for detailed configuration and option information.

    Looking for the three-position version, see A42 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X4 Indexing Actuator.

    For double the output torque and zero backlash, consider our Dual Rack A42 Rotary Actuator.

    Compare All Single Rack Tie Rod Rotary Actuators

  • A42 Rotary Actuator

    A42 Rotary Actuator

    The A42 is our biggest rotary actuator and it features a one-piece heat-treated alloy steel pinion shaft, two racks for zero backlash at end of stroke, and billions of flexible standard configurations

    Overview

    With over 60 times more torque capacity than our A032 Rotary Actuator, the A42 is our largest rotary actuator. Its tie rod construction provides for a virtually unlimited number of possible combinations of standard, readily available options that could be installed either on the top or bottom cylinders as needed. With oversized ball bearings and a one-piece, heat-treated alloy steel pinion shaft, this extremely rugged, versatile actuator is an excellent choice for demanding medium to large applications.

    Specifications:

    • 2-Position Rotary Actuator
    • Bore Size = 2"
    • Standard Rotations = 15 Angles from 30 to 730 degrees
    • Shaft Sizes = Standard: 1.000" dia. or 1.125" dia., Options: D 1.000" dia., D 1.125" dia., & HS .750" I.D.
    • Torque at 80 psi = 554 in-lbs.
    • Ball Bearing Ratings = Radial: 2,020 lbs., Axial: 500 lbs.
    • Port Size = 1/4 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Double Ended Shafts
      • Flow Controls
      • Heavy Duty (Aluminum Cylinders, Option A or Steel Cylinders, Option K)
      • Hollow Shaft
      • Washdown Protection
      • Mount Plates
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A42 Rotary Actuator Part Number page for detailed configuration and option information.

    Looking for the 3-Position version, see A42 3-Position Rotary Actuator.

    If you need precise unidirectional sequential steps, jump to X4 Indexing Actuator.

    Compare All Dual Rack Tie Rod Rotary Actuators

  • A752 Rotary Actuator

    A752 Compact Rotary Actuator

    a752 rotary actuator
    A752 Compact Rotary Actuator

    Overview

    The A752 is designed to produce substantial amounts of torque in a small package. Its dual rack construction also eliminates gear lash at the ends of the stroke for precise positioning of parts. Its standard ball bearings, roller burnished cylinder bores and one-piece heat treated alloy steel pinion shaft contribute to its unparalleled resilience and long life.

    • Bore = 3/4"
    • Standard Rotations = 30, 45, 60, 90, 100, 120, 180, 190 degrees
    • Shaft sizes = Standard: .375" dia., Options: HS .375" I.D. & D .375" dia. 
    • Torque at 80 psi = 35 in-lbs.
    • Ball Bearing Ratings - Radial: 305 lbs., Axial: 76 lbs.
    • Port Size = 10-32 or 1/8 NPT
    • Available Options:
      • Adjustable Rotation
      • Cushions
      • Hollow Shaft 
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers
      • Hydraulic Service Seals
      • Fluorocarbon Seals
      • Fluorocarbon Hydraulic Service Seals

    See the A752 Compact Rotary Actuator Part Numberpage for detailed configuration and option information.

    If you need larger rotation angles and space isn't a limitation, you may want to consider the A2 Rotary Actuator.

    Compare All Compact Rotary Actuators

  • Addressing Common Challenges in Pneumatic Rotary Actuator Operation

    Addressing Common Challenges in Pneumatic Rotary Actuator Operation

    Pneumatic rotary actuators play a pivotal role in the world of automation, bringing a blend of high torque and robust construction packaged in a cost-effective, compact component. External controls are very simple, consisting primarily of a directional control valve, butgetting good performance from these actuatorsrequires careful attention to some details. 

     

    Controlling Inertia 

    In numerous applications, the static torque of the actuator isn't thelimiting factor; the challenge lies in achieving a smooth, controlled motion with a gentle stop to prevent both noise and potential damage to the actuator and surrounding components. This underscores the importance of sizing the actuator properlywith the load's inertia and fine-tuning the operating parameters accordingly. 

    Essentially, the actuator should be sufficiently sized (displacement) to effectively manage the load's inertia. Since air is compressible, an insufficient displacement in the actuator is like having overly soft springs in a car. The consequence? Sluggish performance and perilous collisions at the end of the rotation. 

     

    Flow Controls 

    Meter-out flow controls play a crucial role in pneumatic actuator applications, enhancing both efficiency and safety. These controls create the buildup of back pressure in the exhausting cylinder, proportional to the square of the load velocity.With an adequately sized actuator, this means that it will accelerate the load quickly and then reach a steady speed. Without the flow control, the load will accelerate continuously, causing a high-speed crash at the end. A properly sized actuator with flow control can move the load in a shorter time with lower terminal velocity. 

     

    Cushions 

    Most pneumatic rotary actuators can be configured with pneumatic cushions to decelerate the load in the final thirty or so degrees of rotation. This minimizes the cycle time for a given amount of shock at the end of stroke. A built-in needle valve acts as a second stage of flow controls, allowing precise adjustment of airflow restriction. 

    When adjusting, ensure the actuator is in motion, carrying the standard load at the target speed with the standard operating air pressure. If the needle doesn't restrict the airflow sufficiently, the cushion won't have much impact. On the flip side, if it's too restrictive, the cushion pressure builds too quickly, risking a load bounce-back. But hit that sweet spot in adjustment, and the load will decelerate smoothly without unnecessarily extending the cycle time. 

    For optimal cushion effectiveness, always pair these cushions with meter-out flow controls. Start by adjusting the flow controls first, though be prepared for some back-and-forth fine-tuning. This tag team ensures a seamless, controlled performance. 

     

    Bumpers 

    Bumpers, those resilient pieces of elastomer, typically affixed to the actuator's pistons, play a nifty role in softening the blow – quite literally. As the stroke concludes, these bumpers undergo a gentle compression, siphoning off a chunk of the load's kinetic energy. On their own, bumpers have a modest capacity, but they're a step up from having nothing at all. Excelling at absorbing energy during low-speed maneuvers, they make a perfect match for cushions, which are more effective when dealing with higher speeds. 

     

    Hydraulic Shock Absorbers 

    Some actuator manufacturers offer a solution tailored for high-energy applications: built-in hydraulic shocks. These shocks often outperform pneumatic cushions, thanks to their internal progressive metering. This feature dynamically adjusts fluid restriction throughout the stroke, resulting in a more consistent deceleration force. 

    However, this approach brings forth several challenges. The shock must be designed to withstand the air pressure within the actuator and efficiently absorb a substantial amount of energy during low-speed, short strokes. Additionally, hydraulic shocks might exhibit a shorter cycle life than the actuator, potentially leading to failure through leakage into the actuator. This leakage can go unnoticed and contaminate both the actuator and the air system, all while leaving the actuator vulnerable to a crash. 

    To circumvent these issues, a strategic solution involves externally mounting the shocks. Placing them in direct contact with the load at a distance from the center of rotation increases both speed and stroke, creating more favorable conditions for most shocks. This external setup minimizes exposure to the compressed air environment, mitigating potential problems. 

     

    Lash 

    A rack and pinion rotary actuator must have some clearance between the mating teeth of the rack and pinion.This clearance, often referred to as lash, introduces a degree of free play in the shaft. When an external object, like an arm connected to the shaft, is in play, this free movement restricts the precision of its positioning – a factor of significance in certain applications. 

    The amount of lash can be minimized by the actuator design. Those featuring rackslocated precisely with respect to the pinion can be made with smaller clearances.While the absolute amount of lash might seem minor, its impact is magnified by the radius of the object undergoing rotation. 

    There are several solutions to the lash problem:  

    • Dual rack actuators:Most manufacturers of rack and pinion actuators offer dual rack versions. By building some extra stroke into one rack, it will take up the lash at the end of the stroke. Be aware that the resistance to movement in the last fraction of a degree is only the torque of a single rack actuator.  
    • Vane Actuators:Vane-type actuators offer high torque in a compact package and are naturally lash-free. They are typically less robust and configurable than rack and pinion type but are suitable for many applications.  
    • External stops:If the actuator is built with more rotation than needed and the load is designed to come up against an external stop, the lash will be eliminated. The stop may have energy-absorbing features such as a bumper or hydraulic shock absorber, shielding the actuator from the shock at the end of the stroke.  

     

    Conclusion: 

    When applied appropriately, pneumatic rotary actuators can offer exceptional functionality in automation. 

  • AL75 Rotary Actuator

    AL75 Compact Rotary Actuator

    Compact, unique, adaptable AL75 rotary actuator with patented mechanism.
    AL75 Compact Rotary Actuator

    Overview

    Unlike our other actuators, the AL75 is not a rack and pinion actuator; it features a patented drive mechanism that is both unique and durable. It can operate at very high speeds with light loads and its characteristic slow start/stop motion reduces noise and shock. It can easily be made in various alternative materials and with its ingress protection capabilities, it is ideal for washdown environments.

    • Standard Rotations = 50, 95 degrees
    • Shaft sizes = Standard: .250" dia., D .250" dia., R .250" dia., Options: None 
    • Torque at 80 psi = Varies 7-11 in-lbs.
    • Ball Bearing Ratings - Radial: 77 lbs., Axial: 19 lbs.
    • Port Size = 10-32
    • Available Options:
      • Adjustable Rotation 
      • Washdown Protection
      • Magnetic Switches Installed & Tested Prior To Shipping
      • Bumpers

    See the AL75 Compact Rotary Actuator Part Numberpage for detailed configuration and option information.

    If you need higher torque, consider our A752 Rotary Actuator or for larger rotation angles, consider our A01 Rotary Actuator.

    Compare All Compact Rotary Actuators

  • Home Page Content

    Why Choose Rotomation?

    Delivering engineered solutions since 1967 Rotomation is dedicated to providing reliable, extremely configurable, and fully rebuildable pneumatic actuators for automation. Custom and special actuators are our specialty.

  • Indexing Drives For Automation

    Indexing Drives For Automation

    There are many applications in automation calling for repetitive rotary indexing. Some examples:

    • star wheels
    • conveyors
    • escapements
    • parts positioning for labeling, machining, inspection, etc.
    • dispensing

    There are at least three types of indexing drives that the engineer can choose between for these applications:

    • Mechanical cam based drive
    • Electrical servo based drive conveyors
    • Pneumatic indexing drive

    Cam Drives

    Cam drives have been used for many years and are capable of good accuracy and dynamic control, high speed, and heavy loads. They are typically driven by a gearmotor, with one revolution of the input for each incremental motion of the output. They are best suited for continuous indexing which does not require the motor to be started and stopped for each cycle.

    Example of a Cam Drive Indexer

    PROS:
    • Good dynamic control
    • Good accuracy
    • Large load capacity
    • Durable, rugged construction
    • Energy efficient
    CONS:
    • High cost
    • Not ideal for index-on-demand
    • Inflexible operation

    Servo Based Indexing Drives

    A servo based indexing drive for such an application will include a servomotor with or without a gearbox, an encoder for position feedback, a motion controller, and an amplifier. Some of these components may be combined into integrated packages. There is normally a system controller overseeing the motion control, including human interface.

    Example of a Servo Based Indexing Drive

    PROS:
    • Fully programmable speed, index, direction, acceleration, etc.
    • High resolution
    • Good dynamic control
    • Flexible; can be repurposed easily
    CONS:
    • Relatively complex and expensive
    • Sensitive electronics and wiring must be shielded from adverse environments
    • High level of know-how to design and repair

     

    Pneumatic Indexing Drives          

    Pneumatic indexing drives, such as our indexing actuators, are simple, mechanical components capable of repetitive rotary indexing with no accumulating error. They are based on rack-and-pinion rotary actuators with the addition of one-way roller clutches and a ratchet and pawl system for stopping and registration. The motion is initiated by a directional control valve, so they are well suited to flexible automation where the index must occur on demand. They are robust and durable, but cannot match the controlled motion characteristics of the servo or cam drives.

    Rotomation's X2 Indexing Drive

    PROS:
    • Low cost
    • Very simple to design, implement, and maintain
    • Robust construction can support the rotating load with its own bearings
    • Operate in harsh environments
    CONS:
    • Poor dynamic control of load
    • No programmability
    • Air consumption (only when moving)

    Energy Consumption

    The relative amount of energy these drives consume will depend on the duty cycle of the application. Cam and servo drives are both quite efficient but differ in that the servo uses full power to hold the load in place whereas the cam drive uses power only when driving the load. A pneumatic indexer uses compressed air, which is less efficient than an electric motor drive, but also uses no power when in the locked condition. So, if the duty cycle includes a high percentage of dwell time, the advantage shifts toward the cam and pneumatic systems.

    If you have any questions for our engineers regarding our indexing actuators, call us at 386-676-6377 or CONTACT US to discuss your specific requirements. 

  • Rugged, Reliable Construction Rotary Actuators from Rotomation

    Rugged, Reliable Construction Rotary Actuators

    At Rotomation, we focus on adding value for our customers and thrive when they succeed. Our operations are customer-centric, ensuring we are always accessible to both distributors and end users.

    Maximum Reliability: Rotomation actuators are built for high cycle rates and long-life expectancy, backed by our basic 2-year limited warranty. Typically, our actuators run for tens of millions of cycles. Key features include: 

    Pinion Shafts:Made from quenched and tempered 4150 steel, ensuring extreme impact resistance, accuracy, and long life. 

    Floating Pistons and Racks:Designed for maximum reliability and fault tolerance. 

    Replaceable Sintered Bronze Rack Bearings:Offer long life and easy repairability. 

    Oversized Ball Bearings:Capable of handling heavy loads, allowing for substantial hollow shafts and special applications. 

    Robust and Efficient Design:Our fully machined body, oversized bearings, and rugged shafts allow the actuator to serve as the bearing for your load. This design reduces the number of parts, simplifies design efforts, and saves space. We keep blank pinion shafts with full bearing bore diameter and extra length in stock, enabling us to quickly create custom shafts tailored to your design needs. 

    Long-Lasting and Rebuildable:Rotomation actuators are built to endure millions of operations under heavy loads and are fully rebuildable. We offer a fast rebuild service or provide parts for self-repair. 

    Longevity and Support: Our customers often share stories of Rotomation actuators that have been in service for 10, 20, or even 30 years. They are pleased to learn that we support nearly all our old products and that our current models are compatible with older versions, despite continuous improvements for longer life. Each unit is serialized, and we maintain detailed records indefinitely. 

    For more information about our rotary actuator products and services, please CONTACT US to discuss your specific requirements.

  Actuator Motion Options

Choose your motion then configure the unit to suit your needs exactly.

Rotary Actuators Configured for Your Application
At Rotomation, we manufacture high-speed, heavy-duty pneumatic, and low-pressure hydraulic rotary actuators with various shaft motions. Our design and engineering team will get you the product that fits your requirements. Choose rotation options from a bidirectional rotation between two, three, four, or five positions, and unidirectional rotation in steps. Each rotary motion can be combined with linear motion in a single, independently-controlled actuator.
Our actuators are used in applications for metalworking, assembly, testing, and packaging machinery for automotive, semiconductor, food, pharmaceutical, and other industries.
Their customization and configurability mean you can specify an actuator that will optimize the design of your machines.

Actuator Motion Options

Choose your motion and then configure the unit to suit your needs.

Special Actuators

Rotomation welcomes requests for special actuators because we understand how they can save our customers money by reducing cost of extra parts or engineering time and/or improving their product or process.

View Special Actuators

Like a rotary actuator but with unidirectional rotation

Customized Actuators

If your application requires a simple modification to one or more parts on one of our standard units.

Learn More

Like a rotary actuator but with unidirectional rotation

Custom Material Actuators

If your application requires one of our standard actuator to be made from a different material, including stainless steel, due to specific environmental requirements.

Learn More

Like a rotary actuator but with unidirectional rotation

Custom Designed Actuators for OEM

If your application would be optimized by having an actuator designed from the ground up to suit your exact needs.

Learn More

Our Customers

For over 50 years, Rotomation has been the go-to choice for businesses in need of top-notch actuators and drives to meet their manufacturing requirements. Our success is a direct reflection of our customers' triumphs – by offering them high-quality, rugged products tailored to their exact specifications, we ensure unrivaled reliability. But that's not all; our unwavering commitment to exceptional service and support means we all reap the benefits. And here's just a glimpse into our satisfied clientele

Rotomation News!

Join Our List!

When you sign up for Rotomation News, you'll get our special whitepaper "What are Multi-position Actuators and Where Do They Excel."