Motion Control

Torque Transducers

HBM (Marlborough, MA) offers the T40B and T40FM torque transducers that include an integrated speed measurement system. They are designed to work in harsh environments such as those that contain humidity, condensation, dust, oil, and grease. The transducers take measurements based on the contactless sensing of an anisotropic magnetoresistive (AMR) sensor, so the transducer signal is more stable than that of an optical system. The transducer integrates both the magnetic technology and the speed measurement sensor.

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Linear Actuators

Zero-Max (Plymouth, MN) offers Roh’lix® linear actuators made from stainless steel for use where cleanliness is a priority. Used to convert rotary motion to linear travel, the actuators carry loads at speeds up to 70 inches per second, depending on size. Stainless steel components make the actuators suitable for food, drug, packaging, and similar applications where cleanliness and frequent system wash-downs are required.

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Linear Motor Stages

The PlanarDL-series stages from Aerotech (Pittsburgh, PA) are available in nine different travel and performance configuration applications ranging from high-accuracy surface profilometry to high-speed semiconductor and LED wafer scribing. The PlanarDL XY design allows for use in applications where straightness and flatness of motion are critical. Capable of achieving 1 m/s velocities and 1.5 g accelerations, the stages enable high-throughput and the company’s proprietary directdrive technology.

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Instrumentation Valves

Brennan Industries (Cleveland, OH) offers a line of compression-end instrumentation valves available with single or double ferrule-style tube fittings. The NVB Series ball valves range in size from 1/8" to 3⁄4 " and are available in either 316 stainless steel or brass construction. These valves can have two- or three-way configurations and are rated to 3,000 psi. NVN-2200 and NVN-2300 Series screwed bonnet needle valves range in size from 1/8" to 1" and are available with either metal-to-metal or soft-seat stem types. The 316 stainless steel valves are rated to 6,000 psi, and the brass valves are rated to 3,000 psi.

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Linear Actuators

Exlar, a business group of Curtiss-Wright Controls (Chanhassen, MN), offers the K Series™ linear actuators with a 75-mm frame size. They combine roller screw technology in varying performance levels, and allow the use of third-party motors. Along with 60-mm and 90-mm frame sizes, the actuators feature dimensions and form-factor consistent with ISO Metric pneumatic cylinder specifications for pneumatic and hydraulic replacement. They are compatible with any type and style of motor such as DC, stepper, and servo, and offer universal mounting configurations. They offer standard stroke lengths up to 48 inches. The standard body design provides an IP54S sealed housing with options available for IP65S sealing. A variety of materials and coatings is also offered, such as Type III hard coat anodizing, electroless nickel plating, and epoxy coating.

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Motor Controller

Fairchild Semiconductor (San Jose, CA) has released the FCM8531 analog and digital integrated motor controller. The 3-phase, hybrid BLDC/PMSM controller offers two parallel processors — an advanced motor controller (AMC) and an embedded microcontroller (MCU) — that provide a one-chip solution for complex motor control applications. The two core processors exchange data through an internal communications interface.

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Drive Module

ACS Motion Con - trol (Eden Prairie, MN) offers SPiiPlusUDMlc compact EtherCAT dual/quad-axis drive for equipment utilizing small motors such as pick/place machines, tabletop motion platforms, and wide-format inspection/ assembly equipment. The universal drives can run servo, stepper, and voice coil motors with a power range of 10W to 200W. The type of motor is selected by the user, and can be set differently for each drive axis. It is available in three current levels (cont./peak per axis): 1.25/2.5A, 2.5/5A, or 5/10A (dual-axis version only); supports motor bus voltages from 15-48Vdc; and has inputs for four digital incremental and up to two absolute encoders.

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