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Electro-mechanical actuators are packaged linear actuators in a ram style format with integral motors. They are used in applications where sealed, compact actuators are required with high power to weight ratios for precise actuation and positioning. Actuator load ratings range from 0.5 kN to 400 kN for light to high duty applications.
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Electromechanical actuators becoming more and more the preferred drive technology in the field of linear motion. That is because they can handle a wide range of payloads, provide the desired controlled motion and are cost competitive.
The rotational movement produced by the electric motor will be converted into linear movement by trapezoidal thread spindles installed within the thrust unit as basic design. The selection of spindle lead guarantees self locking for RACO´s electric actuators. Static loads, which can be higher than the nominal thrust, can be maintained in any intermediate position.
Benefits:
High efficiency of the mechanical system generate high power output
Long lasting operation through wear and tear resistant thrust unit components
High reliability even under worth ambient conditions
Full electromechanical principle without any leakage issue (does not ice up or freeze)
Fulfill actual safety and environmental requirements
Does not consume energy when stopped
Easy to install and putting in operation
Low operating and maintenance costs
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Electromechanical actuators becoming more and more the preferred drive technology in the field of linear motion. That is because they can handle a wide range of payloads, provide the desired controlled motion and are cost competitive. The rotational movement produced by the electric motor will be converted into linear movement by trapezoidal thread spindles installed within the thrust unit as basic design.
Benefits:
High efficiency of the mechanical system
Long lasting operation
Easy to install and putting in operation
High reliability even under worth ambient conditions
Full electromechanical principle without any leakage issue
Does not consume energy when stopped Low operating and maintenance costs
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Venture DC Linear Actuators are available in both Acme Screw or Ball Screw versions and combine our Quality Linear Actuators with a DC voltage electric gearmotor providing a ready to install electric linear drive system.
Standard strokes 4, 8, 12, 18, 24, 32, 36, 40 and 52 inches (custom lengths available)
30% duty cycle motor rating
Optional features include;
Clutch
Limit switches
Reed, Hall Effect, Potentiometer and other sensor options
3000 lb static capacity / up to 1500 lb dynamic load
Lifetime lubrication
Designed for outdoor use
Compression or tension loads
Trunnion, Clevis, or Tube clamp mounting
High strength steel tube assembly with all-steel load support members
Long Life Acme or Ball Screw
12VDC, 24VDC, 36VDC, 90VDC, or 120VDC for rectified 120VAC Gearbox Designs
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SPECIAL DESIGNS FOR CANAL SLUICE GATES AND WIRES
Performance potential of hydraulics - combined with
Low assembly costs
Low maintenance costs
Compact construction
Environmentally friendly in accordance with the Federal Water Act
High mechanical efficiency
Integrated spring buffer
Design:
with trapezoidal screw drive
with ball screw drive
with planetary roller screw drive
torque monitoring
integrated limit switches
integrated path-measuring system
Integrated analogue force measurement
protection class: up to IP68 (protected against flooding)
sound emission up to minimum 60dB(A) possible
Numerous references in the field of hydraulic engineering fully document our high standards. These have been compiled in co-operation with the responsible departments of Water and Shipping Administrations.
We offer customised designs and economically priced solutions, which will be adapted to the specific needs of our customers.
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The ELIMINATOR HDL™ replaces hydraulic and pneumatic linear actuators with an electromechanical linear actuator with an Optional Load Cell. This combines force measurement with heavy duty and precise linear motion. It provides a clean, simple, rugged, and economical capability to directly and continuously monitor axial force while simultaneously applying that force.
This ball screw actuator can measure force in both tensile and compressive modes. The heavy wall steel construction and high dynamic capacity components ensure longevity and durability for production processes. Bearing press, component insertion, and product testing, are typical applications where this would be useful. As an integral package, the ELIMINATOR HD™ with load cell is less expensive and much easier to align than traditional ball screw component systems. As a sealed assembly, it is far less susceptible to contamination and physical damage.
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Electromechanical Linear Actuators are electromechanical cylinders able to transform a rotary movement into a linear motion.
Developed and manufactured for industrial application. Linear Actuators can offer higher linear speeds and loads at up to 100% duty cycle, even in the most extreme conditions and arduous applications.
Able to work under push or pull load
According to their features they can be
Statically self-locking : able to sustain static load keeping the same position when the motor is switched off
Statically non self-locking: the load can be sustained with a brake motor
They are capable of maintaining constant speed with a varying load, at a very low noise level.
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Joyce/Dayton - Established 1873
Joyce/Dayton Linear Actuators are the newest addition to our extensive line of lifting and positioning equipment. Available in machine and ball screw designs these heavy-duty linear actuators can handle loads of up to 2000 pounds. Joyce linear actuators are offered in two distinct versions Motorized and Integrated.
All Joyce Motorized and Integrated Linear Actuators are designed for long service life and have been tested at full capacity for thousands of cycles to ensure trouble free operation. The lifting mechanisms consist of either a high tensile aluminum-bronze lifting nut or heat-treated ball nut connected to a heavy wall stainless steel lifting tube. The linear actuator housings are cast from rugged yet lightweight aluminum and include a cast mounting clevis or clevis option.
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The new series of electromechanical actuators with ball screw from Rexroth enables high feed speeds even with heavy loads.
All important components come from Rexroth's service-proven range of standard products, including three different stepping and servo motors with various performance profiles.
The mechanism is based on the tried and tested rolling precision ball screw drives in all common combinations of diameter and pitch. Performance characteristics such as precision of positioning, axial load and speed can be optimized in accordance with the requirements of the individual application.
Using a screw drive rules out the stick-slip effect associated with other designs and increases the repeat accuracy of the overall system.
By using ideally-dimensioned inclined axial roller bearings, the load rating of the ball screw drive can be utilized to the maximum. There is an extensive range of possibilities to choose from in the drive configuration and the fastening elements.
The new components fully comply with protection class IP65, and thanks to the use of corrosion-resistant material are ideal for applications in packaging systems with frequent cleaning cycles. Similarly, the robust combination of power and speed promise substantial benefits in dosing and processing systems, in machine tools and woodworking machines, and in general automation.
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Acme or ball screw linear actuators.
Right Angle Design - High efficiency worm gear drive.
Parallel design - Timing belt drive to perform high linear speeds.
Lifelong grease lubricant. Minimum axial backlash.
Performing noiseless and running with high accuracy.
AC or DC motors.
Linear speed up to 500 mm/sec
Load up to 80 kN
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At last, an all electric SKF cylinder performing with the power of hydraulics and the velocity of pneumatics.
SKF cylinders using SKF planetary roller screws are expanding the limits of linear cylinders. They are designed for long life, high acceleration and high force applications. The cylinders use brushless servomotor technology, with an in line or parallel drive as standard.
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Electromechanical Linear Actuators (ELA) consist of a completely enclosed aluminium housing with worm gearing and axial bearing driven by a standard supplied electric motor as well as a thrust and shaft tube construction. Trapezoidal or ball screws. It is possible to install ELAs in any position and the thrust and guide mechanism is designed for both compressive and tensile loading. Other distinguishing features include robust construction and reliability giving ELAs a wide range of applications.
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Recent sales of Zwick’s electro-mechanical testing actuator have provided unique solutions for customers carrying out diverse mechanical testing. For example, in the automotive industry it has been used to test seat head rests, foams, steering columns, gearshifts, brake pedal assemblies, switches, connectors, and solenoids. In the medical industry components such as needles and bone have been successfully evaluated, whilst for sporting equipment the system has carried out tests on skis, and snowboards.
This wide variety of tests is possible due to a truly impressive specification, and a reliable testing system based on many core components from the Zwick Roell Group product portfolio. The EM Actuator is the obvious solution for many different and complex testing applications.
The electro-mechanical testing actuator is quite unique as it can be directly assembled, at any angle, into a production line and controlled via dedicated I/O control systems, or it can be used in stand-alone mode with a dedicated test stand. In addition it can be fitted to any standard Zwick universal test frame thereby adding an additional test axis for tests which require side loads All standard Zwick attachments can easily be attached.
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LTA’s are designed to fit into your existing manual stages and other opto-mechanical components as a direct replacement for manual micrometers. The LTA series features a space-saving design with the motor and lead screw side-by-side. This reduces the actuator length by 50% and minimizes the negative effects of long cantilever loads on micro-positioning equipment. The non-rotating tip prevents wear and avoids periodic motion variations which can be caused by variable contact made between a rotating tip and the mating surface.
LTA’s are designed to fit into your existing manual stages and other opto-mechanical components as a direct replacement for manual micrometers. The LTA series features a space-saving design with the motor and lead screw side-by-side. This reduces the actuator length by 50% and minimizes the negative effects of long cantilever loads on micro-positioning equipment. The non-rotating tip prevents wear and avoids periodic motion variations which can be caused by variable contact made between a rotating tip and the mating surface.
- Up to 50 mm travel in a space saving design
- Non-rotating tip improves motion smoothness and has no wear
- Exceptional position sensitivity
- Adjustable limit switch prevents damage from over-travel
- Convenient manual positioning knob
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- Precision linear actuator
- Travel Ranges 10, 25 and 50 mm
- Min. Incremental Motion to 0.05 µm
- Non-Rotating Tip
- Closed-Loop DC-Motors
- Sub-nm Resolution with Optional PZT Drive
- MTBF >5,000 h
M-227 are ultra-high-resolution linear actuators providing linear motion up to 50 mm with sub-micron resolution in a compact package. They consist of a micrometer with non-rotating tip, driven by a closed-loop DC-motor/gearhead combination with motor-shaft-mounted high-resolution encoder. The combination of an extremely low stiction/friction construction and high-resolution encoder allows for a minimum incremental motion of 50 nanometers at speeds up to 1 mm/sec.
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MT PRECISION™ Ball screw Linear Positioner
The MT PRECISION™ is a machine tool grade ball screw linear actuator developed to provide a precise, strong, and durable linear motion solution for high accuracy positioning applications.
MT PRECISION™ is more efficient, easier to align, and provides superior control of position and velocity compared to less expensive, hydraulic or pneumatic solutions.
As an integral package, the MT PRECISION™ linear positioner actuator is less expensive and much easier to align than traditional ball screw component systems. As a sealed assembly, the MT PRECISION™ hydraulic replacement is far less susceptible to contamination and much easier to maintain than accordion style or sheet metal covers.
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Electric linear actuators
