Motion Control

Electric Actuators

Warner Linear (Belvidere, IL) has announced the ITrack linear actuators for light- and medium-duty applications where parallel motor type actuators won’t fit in limited space requirements. The actuators feature a release clutch that allows the actuator rod to float when power is off. When the clutch is disengaged, much less force is required for manual movement. The clutch also provides overload protection and can be driven through in case of obstruction. The actuators have a load capacity up to 200 pounds, and stroke lengths up to 12". Gaskets are nitrile-impregnated for sealing, and steel components are nitrotec-coated for corrosion resistance. Models feature a ball screw, a steel rod, and are IP66 capable. Operating temperature ranges from -40 °F to 185 °F.

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Torque Control Hinges

Reell Precision Manufacturing (St. Paul, MN) offers the TI-100 and TI-200 Series torque control hinges that provide pivoting capabilities without the standard appearance of conventional hinges. Depending on model, the torque inserts press-fit into a variety of materials via a keyed cavity, or can be plastic over-molded. They feature patented ReellTorq® clip technology, which eliminates the need for adjustment, and provides precise position control and torque.

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Gearmotors

Applimotion (Loomis, CA) has introduced custom gearmotors for high-torque, low-speed, and low-profile applications. The assemblies combine gearing and direct drive frameless motor kits. The ULT, UTH, and UTS low-profile frameless motors are combined with the appropriate gearing solution. Custom gearmotor assemblies range in size from 25 mm to 800 mm diameters. A 150-mm diameter unit can produce 50 NM of continuous torque and up to 150 NM peak torque.

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Stepper Motor Driver

Lin Engineering (Morgan Hill, CA) offers the R1025 stepper motor driver that can be used with stepper motors ranging from NEMA 8 to NEMA 42. The driver is capable of output currents ranging from 0.8 to 10 amps peak while handling 12 to 80VDC of input voltage. With selectable step resolutions from full stepping to 256x microstepping, the driver is capable of stepping a typical 1.8 degree motor over 51,000 steps per revolution. It features a small footprint and accessible mounting holes. The driver includes three selectable damping modes, as well as onboard DIP switches, eliminating the need to connect it to a computer.

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DC Compressor

Designed for air seats, light-duty air suspension, and other mobile applications, the Thomas 135 Series DC WOB-L® compressor from Thomas Division, a Gardner Denver Company (Sheboygan, WI), is a compact, lightweight intermittent-duty pump. The compressor is 1.16 pounds and 3.6 × 1.66 × 4.34". Avail able in 12V or 24V, the compressor features an oil-less piston and cylinder, stain tless steel and silicone valves, and a built-in inlet filter. All models are balanced for low-vibration operation, and are dust- and moisture-resistant.

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DC Accelerometer

Measurement Specialties (Hampton, VA) has introduced a rugged, triaxial DC accelerometer for steady-state, low-g vibration measurements and high-g transient shock measurements. The piezoresistive, MEMSbased Model 3803A provides triaxial measurement under harsh operating conditions. Hermetically sealed in a welded, stainless steel housing, the IP65-rated sensor is used for testing applications in harsh, high-performance installations. The unit is offered in dynamic ranges from ±2 g’s to ±2,000 g’s, and is gas-damped to provide a wide frequency response across all three axes. The unit’s MEMS sensing elements include overrange stops for protection to shock levels greater than 5,000 g.

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Encoders

Heidenhain Corp. (Schaumburg, IL) offers the Leine & Linde DRIVE-CLiQ encoder platform for operation in harsh drive environments where they are exposed to vibration, shock, and mechanical loads. The encoder can be installed to the motor mechanics typically found in heavy-duty applications without any adaptation needed. DRIVE-CLiQ is Siemens’ communication protocol for motor feedback in a SINAMICS drive system. It is an Ethernet-based interface for connection of different kinds of components like motors, frequency converters, and encoders.

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