Features

Accelerometers

Wilcoxon Research (Gaithersburg, MD) has introduced the 788A accelerometers that feature a sensitivity of 100 mV/g. The accelerometer is a single-axis sensor with an acceleration range of +50 g. High-frequency response measurements up to 10 kHz identify faults and improper machine operation. Typical noise is 4 mg at 100 Hz. The unit operates at temperatures between -50 and 120 °C. Applications include vibration monitoring of fans, motors, pumps, blowers, compressors, chillers, gearboxes, and mixers.

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Brushless DC Drive

Performance Motion Devices (Lincoln, MA) has announced the ION™ brushless DC drive, a network-connected motion control drive. The fully enclosed compact module provides network connectivity, power amplification, and motion control, and is available for brushless DC, DC brush, and microstepping motors. The module provides CANbus and serial communications, and accepts commands over the network to control trajectory generation, position loop, and current loop. The brushless DC ION controls a three-phase brushless motor using field-oriented control or sinusoidal commutation, and operates at 40 kHz with an output capability of 500 W.

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Accelerometers

The LCM 100 accelerometer from Jewel Instruments (Manchester, NH) is designed for industrial, commercial, and aerospace applications. It is engineered with micro-machined components. The 0.5G to 4.0G device meets the needs of applications requiring 500G shock resistance and up to 500 Hz bandwidth. It is suitable for use in automotive performance testing, seismic monitoring, and machine tool control and flight-testing applications.

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Piezo Motor

New Scale Technologies (Victor, NY) offers the SQL Series SQUIGGLE piezo motor that measures 2.4 × 2.4mm and features a metal/ceramic composite construction. The motor holds position when power is turned off, conserving battery life. Standard models are available in 2.4-mm and 3.4-mm sizes, with customizable shaft lengths and travel ranges. The motor features resolution better than 100 nm, speed up to 10 mm/s, and an ultrasonic design that consumes less power than miniature electromagnetic motors.

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Linear Actuators

Festo Corp. (Hauppauge, NY) has introduced the DMES electromechanical linear actuators that provide a feed force of up to 3000 N. The lead screw of the actuators is non-backdriveable, eliminating the need for an additional braking mechanism in vertical applications. The lead screw is integrated within the actuator body, providing enhanced protection, and minimizing risk of premature failure related to contamination from debris. An external metal sealing strip provides additional protection from dirt and dust.

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Rotary Torque Sensor

The Torkdisc® rotary torque sensor system from the Force/Torque Division of PCB Piezotronics (Depew, NY) is a compact, in-line rotary torque sensor for spindle qualification testing of machining center and other torque measurement applications where space is minimal. The sensor features high torsional stiffness and low sensitivity to axial and thrust bending moments.

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DC Gearmotors

PennEngineering® Motion Technologies (Harleysville, PA) offers PITTMAN® brush-commutated DC gearmotors with output torque to 175 oz-in with standard sintered steel spur gearing, and output torque to 500 oz-in by incorporating select gear ratios and high-strength gears. The Series GM8000 gearmotors are available with a range of 11 standard reduction ratios from 6.3:1 to 1803.6:1. Series GM9000 gearmotors offer 12 ratios from 5.9:1 to 4732.5:1, and Series GM14000 gearmotors feature four ratios from 5.9:1 to 218.4:1.

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