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Stober servo ball screw motors available in two versions

Stober (www.stober.com), the geared motor and drives specialist from Germany, has introduced its latest range of compact servo ballscrew motors that directly drive spindle nuts or rotating spindles. Based on the PipeDrive Technology of the company, the high-torque motors are dynamic.

Offered in two versions, the first version, which is known as type EZS, has been specifically designed to drive screw drives using a rotating screw shaft. It will drive a screw nut that is usually attached to a linear slide. The screw is fitted by inserting it into the blind-hole hollow-shaft of the motor, and attaching it to a clamping set. In addition, screws measuring four diameters from 20 mm to 40 mm can also be used, depending on the size of the frame. The EZS motors have been equipped with special axial angular contact ball bearings, enabling it to effectively absorb high axial thrust.

The second version, which is known as type EZM, has been developed to drive screw drives using driven nuts. It features large flanged hollow shaft that can be used to directly drive flanged spindle nuts.

The new motors accomplish short lengths with the help of an orthocyclic tooth winding system that features a high copper fill factor, delivering around 80 percent more power compared to traditional winding. Both versions are offered in three lengths, two sizes and four spindle pitches (from 10 mm to 32 mm). The motors can also be supplied with liquid cooling and as brake motors. Forced cooling is offered as an option in the EZS models.

Haydon Kerk’s Programmable Linear Actuator features 20 in. stroke length

Haydon Kerk Motion Solutions (www.HaydonKerk.com) has released the Haydon RoHS compliant IDEA Size 23 Non-captive Linear Actuator, which combines programmable control and high-output force, rotary to linear motion, stepper drive in a single integrated package. The linear actuator delivers an output force of up to 200 lb ft (890 N) and linear travel per step ranging between 0.000125″ (0.0031 mm) and 0.005″ (0.127 mm).

Featuring an easy-to-use graphic user interface, the configuration of the IDEA programmable linear actuator offers a stroke length of up to 20 inches with various screw pitches, effectively enabling fine-resolution linear motion. The programmable linear actuator is ideally suited for precision fluid dispensing, motion systems for optics and lasers, small gantry robots, high-resolution imaging as well as in other applications demanding precision linear motion.

Instead of using proprietary programming languages or other complicated command sets, the actuator is programmed using an on-screen graphic buttons. Using interactive debug feature, the software enables the system designer to troubleshoot programs easily through multiple-line or line-by-line program execution. Inputs and outputs can also be simulated in the software before connecting actual I/O hardware.

The IDEA programmable linear actuator also features eight opto-isolated general purpose I/O, 3.85 Arms max rated current per phase with a 30 percent boost current capability for ramping and a single supply voltage of 12 to 75 VDC. The inputs are rated for five VDC to 24 VDC, 4mA maximum per input, while the outputs are open collector, five VDC to 24 VDC, 200mA max per output.

Nanotec’s electrical linear actuator comes in 56 mm

Nanotec Electronic (en.nanotec.com) has expanded its electrical linear motor’s upper range with the addition of the new L5918 model (56 mm, Nema 23).

The new model features a low-friction threaded drive bushing that consists of high-performance thermoplastic material. Its distinctive compatibility with Plug and Drive motors allows for simplified designing of efficient, built-in linear systems.

Offering step resolution of 0.01 mm in full step, the L5918 can also achieve resolutions of up to 0.001 mm in micro-step and with an encoder.

The L5918 linear actuator is available in 200 mm long lead screw with two mm pitch, making it suitable with an anti-rotational-safeguarded pushrod or for external clamping system, for rigid and highly dynamic machine designs or multi-rotor operation, and as a ready-to-install linear positioning drive.

Closed loop-capable, the new linear actuator can also be used as an appropriate controller together with field-oriented control, and high-pole servomotor with an encoder, which is offered as a standard option.

This highly customizable product can also be combined with an integrated controller, like the PD4-N Plug & Drive motor.

Its motor, linear axis, controller coupling and encoder help create a compact package for linear positioning — which is a major advantage, especially if manual format adjustment will be automated in current machinery.

The threaded bushings of Nanotec’s hybrid linear actuators are made of polyetheretherketone high-performance plastic. This makes the linear actuators extremely wear resistant, even when exposed to high mechanical and thermal loading.

Aside from providing better sliding features than traditional bronze threaded bushings, Nanotec’s thermoplastic nuts are twice as efficient and offer lesser friction. The self-lubricating nuts require less maintenance while offering extended life cycle to the motor.

Nook Sensor System offers precision position control

Nook Industries (www.nookindustries.com), one of the world’s leading manufacturers of linear motion control systems and components, has launched its latest patent-pending Nook Sensor System (NSS), which was designed to offer precision position control for translating screw jack systems.

Specifically developed for the ActionJac, the NSS delivers a highly accurate repeatability of up to +0.004 inches (0.1MM). The sensor features a simple design that is unique to the screw jack world. Its custom aluminum stem cover offers a housing shroud for certain position as well as on travel limit sensors mounted with custom profiles and utilized to detect ring magnets integrated on the translating screw. The operation of the sensors is based on a state-of-the-art, patented electronic magnetic circuit.

The system’s sensors are manufactured utilizing a polypropylene over-molding technology, which enables the sensor to be fully sealed into small sizes without sacrificing durability. To meet a vast array of position sensing requirements, the system can be added with an unlimited number of sensors since configurations with the ActionJac are only limited by the stem cover length.

With its simple aluminum stem housing design providing the functionality of position sensing, the cost efficient NCC serves as an alternative to expensive rotary limit switches. Its ease-of-use design can also be integrated to effectively meet the demands of various industrial applications such as in material handling, aerospace, defense, stamping, medical devices, sorting and conveying.

Exlar expands its planetary roller screw portfolio

Exlar (www.exlar.com) has expanded its component planetary screw portfolio to offer two new performance capacities, available in PRR and PRS models.

The PRR models feature G9 lead accuracy, deliver static load ratings up to 18,000-lbf and are offered in screw diameters ranging from 12 mm to 27 mm. Meanwhile, the PRS models offer static loads up to 218,000-lbf, G5 lead accuracy and comes in screw diameters of eight mm to 80 mm.

Providing a mechanism for easy conversion of rotary torque into linear motion, Exlar’s roller screws operates just like ball screws or acme screws, featuring a nut traveling on a threaded shaft. Unlike ball or acme screws, however, Exlar roller screws can support heavy loads, at high speeds, and with high duty cycles for longer hours during the most difficult conditions. This effectively makes them an ideal substitute for ball screws.

The roller screw actuators offer a superior alternative to pneumatic or hydraulic solutions in applications that anticipates high loads and require faster cycling. Electromechanical systems employing roller screws provide great advantages, since they do not demand a complex support system of pumps, valves, sensors and filters. Hence, aside from demanding lesser space, roller screw based systems also offer minimal maintenance and longer working lives. These systems also deliver highly efficient operation as they reduce noise levels, eliminate hydraulic leaks and provide increased flexibility.

Exlar’s new planetary roller screws are specifically designed with more contact points on sizes similar to ball screws. The increased contact points allow the roller screws to deliver higher load capacities and optimized stiffness.

Festo unveils new DNCE electromechanical rod actuators

Festo (www.festo.com), one of the world’s leading suppliers of pneumatic and electrical automation technology, has expanded its extensive portfolio of electromechanical actuators to include its latest electromechanical rod actuators, DNCE.

A screw-driven linear actuator, the DNCE electromechanical rod actuator comes with a nonrotating round piston rod. It also serves as a drop-in alternative for the Festo DNC as well as to other pneumatic cylinders compliant with ISO standard 6431 during conversions from pneumatic to electromechanical automation.

Providing high precision and flexibility, the new electromechanical rod actuators is an ideal solution for motion control applications that demands critical positioning accuracy.

The new electromechanical rod actuator is offered either as part of a Festo solution seamlessly combined with an MTR-DCI intelligent controller and motor, or as an independent mechanical axis to be mounted to a third party motor or a Festo motor. The DNCE electromechanical rod actuator is also available either with a ball screw or a lead screw, which enables it to meet the demands of varying performance requirements.

The lead screw driven DNCE electromechanical rod actuator is self-braking for safety, while the ball screw-driven DNCE offers higher feed velocities, higher precision and repeatability. It also has longer duty cycles as compared to pneumatic actuators. Repeatability of lead screw driven actuator is – +/- 0.07 mm, while that of the ball screw is – +/- 0.02 mm.

The motor mounting of the new DNCE electromechanical rod actuator can be configured as a reverse parallel mount (U) or axially (A).

With proximity sensors that can be easily mounted into sensor slots, the new electromechanical rod actuator is also available in custom and standard stoke lengths of up to 600 mm.

SplineRail™ Linear Actuator from Haydon Kerk

Haydon Kerk Motion Solutions, Inc. introduces the motorized SplineRail™ Linear Actuator with an integrated connector. Offered alone or with a harness assembly, the connector is RoHS compliant and features a positive latch for high-connection integrity. The integral connector is rated for up to 3 amps, and the mating connector will handle a range of wire gauges from 28 to 22 gauge. This configuration is ideal for users who want to plug directly into a preexisting wire harness.

The SplineRail combines mechanical drive, guidance, and a stepper motor actuator in a single, compact component. The system uses a Size 17 single stack or double stack stepper motor with either a 1.8 or 0.9 degree motor step angle. Screw leads are available from 0.05” to 1.2” per revolution, providing a wide range of performance profiles that include self-locking threads, which can support a load without external power or breaks.

The SplineRail technology utilizes a Kerk® precision rolled lead screw, supported by bearings and contained within a concentric aluminum spline, driving an integrated Kerkite® composite polymer nut/bushing. The extruded aluminum spline offers excellent torsional stability. KerKote® TFE coating and self-lubricating Kerkite nut/bushing material ensure long life and zero maintenance.

Typical applications include pick-and-place mechanisms and robotic assemblies in life sciences instrumentation, semiconductor equipment, business machines, packaging and assembly, and a wide range of factory automation applications. Combined with Haydon Kerk’s broad offering of motion control components, the programmable SplineRail can be used to create custom systems for many types of motion.

Haydon Kerk Motion Solutions, Inc.
www.haydonkerk.com

SRA04 Motorized ScrewRail linear actuator’s design conserves space

Haydon Kerk Motion Solutions (www.haydonkerk.com) has unveiled the SRA04 Motorized ScrewRail Linear Actuator that features an integrated size 11 stepper motor.

Unlike traditional two rail system, this motorized ScrewRail saves space by as much as 80 percent. The simplified design, assembly and manufacture of its motion system eliminate the need for an external rail-to-screw alignment.

The ScrewRail is comprised of a Kerk precision rolled lead screw contained in a concentric steel guide rail and supported by sealed ball bearings. Its self-lubricating nut/bushing material and KerKote TFE coating guarantees zero maintenance and longer life. Capable of simultaneously lifting and rotating (Z-theta motion) when mounted vertically, the ScrewRail is suitable for pick-and-place mechanisms. It is available both in anti-backlash (SRZ) and freewheeling (SRA) nut assembly and is offered in up to 72-inch stroke length.

It utilizes a size 11 Haydon hybrid double stack stepper motor, which comes with an integral connector or flying leads. Its RoHS-compliant connector that is rated up to three amps, provides a positive latch to deliver high connection integrity. Meanwhile, its mating connector supports various wire sizes that range from 22 to 28 gauge.

Aside from pick-and-place mechanisms, the SRA04 motorized ScrewRail is also ideal for robotic assemblies in semiconductor equipment, life sciences instrumentation, packaging and assembly, business machines, and a vast array of factory automation applications. Used together with the company’s extensive offering of motion control components, customers can create their own custom systems for numerous kinds of motion.

Electric vehicle barriers features GSX40 actuato

With linear actuators from Exlar (www.exlar.com), Robotic Security Systems (www.rssi.com), a vehicle security barriers manufacturer, has launched the RS-2000, an electric barrier that is reliable, simple to install and operate, and cost-effective to maintain.

“The main difference between a hydraulic barrier and an electric barrier is performance. With electric motors, the barrier can operate faster—with more duty cycles and operations in a given time period—without sacrificing reliability,” said Bill Jempty, RSSI VP of Sales and Marketing.

Exlar’s GSX40 actuator provided RSSI the advantages of brushless servo design and roller screw technology. Featuring planetary rollers fitted around the extending rod of the actuator that follow threads, the roller screw mechanism converted electric motor power within the actuator into linear motion.

“The GSX40 … allowed us to move our barrier up and down faster with a higher number of duty cycles,” said Jempty. “The servomotor was especially helpful because it knows where the barrier is at all points in its operation. With the old style you only knew if the barrier was up or down.”

Aside from its capacity to support heavy loads at high speeds, GSX40’s roller screw mechanism provided it with longer functional life attributed to its larger cumulative contact surface.

Delivering high speeds of 3000 rpm that translates into 10in/sec for the barrier, the actuator’s compact system permits for high torque even at the speed of 0. K-12 certified, RSS-2000’s actuator back-up battery system allows for 300 more uses even after its power has gone out.

New Ball Screw and Guide Options for Tolomatic Actuator Series

Hamel, Minn. - Tolomatic has expanded its new line of ERD electric rod-style actuators to make the line more flexible than ever before. Enhancements such as ball screws, motor mounts for NEMA and metric stepper and servo motors, plus a guide option, make it possible to employ ERD actuators in many more types of motion control applications. Originally designed as an affordable replacement for pneumatic cylinders, the ERD has become a very economical actuator solution for applications such as product changeovers, pick-and-place, sorting and diverting, heat-staking and more.

The addition of ball screw choices improves the force range of the ERD up to 200 lb. The combination of NEMA and metric motor mounts allows users to select their preferred brand of servo or stepper motor. All three sizes of the ERD are available with an optional external guide system that prevents rod deflection and rotation during operation. The guide also features a tooling plate for mounting hardware.

www.tolomatic.com

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