Features

Non-Contact Magnetic Encoder

Avago Technologies (San Jose, CA) released the AEAT-60xx series of non-contact magnetic encoders. Coming in a cylindrical package (23 mm in both diameter and height), the unit is for industrial applications. It can provide absolute angle detection upon power-up, with a resolution of 0.0879 degrees (12-bit versions) or 3.5 degrees (10- bit versions), which are equivalent to 4,096 and 1,024 positions per revolution, respectively. There is no upper speed limit. Housings are included with the encoders, and they are available in 4-, 6-, and 8-mm diameters. Other features include direct connectivity through PCB, synchronous serial interface (SSI) output, RoHS compliance, single 3.3 or 5 V supply, and a temperature range of -40 to 125°C.

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Timing Belts

BRECOflex Co., LLC (Eatontown, NJ) introduced the Standard Plus Technology line of BRECOFLEX Truly Endless timing belts for high-precision positioning applications using bifilar cable arrangements. The product features lessened pitch tolerance deviations and augmented belt length tolerance and accuracy. Other features include a higher degree of stiffness and rigidity, and increased power transmission.

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Paver Bearing

Emerson Power Transmission (Ithaca, NY) released Sealmaster® paver bearings for applications dealing with abrasive paving conditions and asphalt materials. A four-barrier seal protects the product’s inner components from contaminants. The barrier, comprising a ductile iron end cap, rotating shield, self-adjusting washer, and high-temperature seal, filters out asphalt particles, resists asphalt erosion, and withstands high temperatures. Other features include a brass retainer.

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Commutated Motor

From Maxon Motors (Fall River, MA), the EC-max 16 2-wire brushless motor features ironless winding, and its turns are detent-free. The commutation electronics are integrated, and allow direct control with an operating voltage of between 5 and 15 V. The motor turns proportionate to the applied voltage with the relevant speed in a given direction. The unit generates continuous torque of up to 3.4 mNm. The housing features, when combined with a metal flange, include temperature stability, heat elimination, and shielding against electrical fields. Dimensions are 16 mm in diameter and 33.6 mm long. The nominal output is 5 W. A 16-mm-diameter planetary gearhead can be added to increase inertia up to a maximum of 0.3 Nm.

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Compact Linear Actuator

The LCB Series from Parker Hannifin Corp. (Cleveland, OH) is a line of compact linear actuators featuring a low-friction, dry running, sliding bearing carriage. An external sliding guide, with dry-film lubricant, is incorporated as part of the aluminum profile. A sliding carriage is available in three sizes to increase load capacity and sliding blocks ensure smooth travel motion without detensioning the timing belt. Low carriage mass and a steel-reinforced timing belt augment acceleration and velocity. With acceleration at 20 m/s2 and speeds up to 8 m/s, two profile sizes are available: LCB040 and LCB060. Options cover R/L drive orientation, drive shaft type (single/double), free drive shaft, or as equipped with coupling kit.

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Motorized Linear Stage

Zaber Technologies (Richmond, BC, Canada) released the T-LSR series of computer-controlled, motorized linear stages, which travel up to 300 mm and have a resolution down to 0.25 μm. The device can handle loads up to 20 kg at speeds up to 20 mm/s. Multiple units may be mounted in X-Y or X-Y-Z configurations without any additional hardware. Integrated motors and controllers let the devices be daisy-chained with other T-series products and controlled from a single USB or RS232 serial port. A knob at the end of each stage allows for manual control (for manual operation, the stage need not be connected to a computer). They are compatible with the company’s T-LS motorized ball bearings.

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EtherCAT Servo Drive

Copley Controls (Canton, MA) offers two open-standard, EtherCAT-compatible Accelnet servo drives that deliver 18A and 36A peak, respectively. The drives are designed for centralized control of multi-axis automation or distributed motion control systems. The AEP-90-18 and AEP-90-36 drive brushless and brush motors and run on 20−90V DC power. Operating modes include torque, velocity, trajectory tracking, point to point, and homing. Multiple choices for encoder feedback include Endat 2.2, Hiperface, incremental, and analog encoders. The drives measure 7.7 × 3.9 × 1.2".

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