Products

Voice Coil Actuator

Gee Plus (Elgin, SC) has announced the VM2436 voice coil actuator that provides bi-directional linearity over a maximum linear stroke of 0.59". It develops a peak force of almost 11 ounces in a package size of 0.94" outside diameter by 1.49" long. The actuator is constructed using a Teflon-impregnated coating on the core of the magnet assembly, with the coil assembly running directly against the surface. The actuator is suited for individual equipment requiring a z-axis drive.

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Servo Motor

Nanomotion (Ronkonkoma, NY) offers the MM industrial servo motor that provides unlimited rotary or linear motion with 0.17 N of driving force and velocity to 235 mm/sec. The motor measures 9 × 17 × 5 mm and weighs 5 grams. It works with the company’s standard amplifiers and any servo control, and can be integrated into most bearing structures.

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Direct Drive Actuator

Copley Controls (Canton, MA) offers the ServoTube actuator with twin outrigger bearings designed for applications subject to high side loading. A ball-bushing option with steel bearing rails provides maximum side-loading support. Optional polymer bushings, which use aluminum rails, are suitable for vertical loads. The new bearing structure minimizes jamming and simplifies actuator integration into rugged industrial equipment.

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Motor Driver

Allegro MicroSystems (Worcester, MA) has announced the A1441 full-bridge motor driver designed to drive single-phase, low-voltage, bipolar brushless DC motors. Commutation of the motor is achieved by the use of one Hall element to detect the position of an alternating pole ring magnet. The IC semiconductor process enables the integration of Hall element on the same IC as the motor control circuitry.

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Vibration Analyzer

Datastick Systems (Campbell, CA) offers the VSA-1212 vibration spectrum analyzer, a PDA-based vibration analyzer that uses off-the-shelf ICP®-type piezoelectric accelerometers for machine condition monitoring and maintenance. The system includes the Datastick® analyzer module that attaches to PDAs running Palm OS, the Datastick Spectrum handheld software that collects and displays vibration measurements, and Datastick Reporting System™ software that receives the data from the handheld into a Microsoft® Excel® workbook on the PC.

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Collet Chuck

Lexair (Lexington, KY) has announced the Lexair/ Production Dynamics Full Bore® chuck, a mechanical-grip, air-release, front-mounted collet chuck designed to make the full spindle bore available to handle larger bar stock. The design eliminates the conventional draw tube and external actuator. Air is used only to open the chuck. Spring force holds the workpiece while it is being machined, and the part remains clamped even if air pressure is lost. Since clamping force is constant regardless of spindle speed, higher speeds can be reached during machining. Clamping force is adjustable by tightening or loosening the collet using the spanner holes.

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Brushless DC Motors

Pittman® Brushless DC servomotors from PennEngineering® Motion Technologies (Harleysville, PA) feature a slotless stator design for applications in data storage, medical, semiconductor, and automation. Features include low inductance and high current bandwidth for control during rapid acceleration in incremental motion applications, and a large magnetic air gap that minimizes viscous torque losses.

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