Products

Ceramic Linear Motor Actuator

The N-310 NEXACT ceramic linear motor actuator from Physik Instrumente L.P. exhibits a 10 Newton push-pull force with 20 mm travel and a maximum speed of 10 mm/sec. It provides picometer resolution, millisecond response time, and high bandwidth. The actuator measures 25 × 25 × 12 mm and weighs 50 g (1.7 oz.).

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Vibration Motor Driver IC

The Melexis MLX90283 vibration motor driver IC from Melexis Microelectronic Integrated Systems (Concord, NH) is designed to overcome the problem of single-phase brushless dc motors starting in the incorrect position, which could lead to unreliable start-up or a locked rotor condition and prevent functioning of a vibrating alert in a mobile phone or PDA.

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Rotary Motion Simulators

The ARMS series direct-drive rotary motion simulators from Aerotech (Pittsburgh) can provide resolutions as fine as 0.02 arcsecond, with accuracy to +/-2.5 arcsecond and repeatability to +/-0.5 arcsecond. The motor and high-performance rotary encoder and directly coupled to a common shaft. The ARMS provides rate resolution down to 0.0002 deg/s and rate stability to 0.0001%.

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Spring Brake

The BFK458-L stopping and holding brake from Lenze-AC Tech (Uxbrdige, MA) is guaranteed to run for 10,000,000 cycles or two years of service life. The spring-applied brake has a cast iron casing and carries a two-year warranty.

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Hybrid Linear Actuators

Haydon Switch & Instrument Inc.’s 35000 series double stack hybrid linear actuators measure 1.4 square in. and are available in captive, non-captive, and external linear versions. The size 14 actuators are available in various resolutions ranging from 0.0158 to 0.127 mm per step and deliver thrust voluntarily limited to 222 N to avoid compromising long life. The actuators can be microstepped for even finer resolution.

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Piezoelectric amplifier

DSM (Franklin, TN) has introduced the VF-90 linear photoelectric amplifier for space-constrained and OEM applications. Compatible with National Instrument’s CompactRIO and CompactDAQ modular chassis, the amplifier is suited for both open-and closed-loop motion control applications.

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Variable Speed Motor

The DynaMotor from DynaMotors Inc. (Cleveland, OH) is designed to produce more torque than motors of comparable size. For instance, a NEMA 56 frame TEFC DynaMotor generates 11 foot-lb. of torque at 600 rpm — three times that of a comparably sized PWM inverter and AC motor, according to the company.

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