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Motor Design Software

Cobham Technical Services

(Aurora, IL) has introduced the 3D Advanced Machines Environment that combines finite-element analysis simulation with a design entry system to create 3D models of electric motors or generators. The electromagnetic design tool for rotating electrical machines is an application-specific toolbox of the Opera electromagnetic simulator. The software provides a front end to the electromagnetic simulator that uses “fill in the blanks” dialog boxes. Users select the form of motor they want to design from a list of common types. By entering a list of parameters to define mechanical geometry, material properties, and electrical data, the 3D models are automatically created.

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Compressor

The 2450 Series WOB-L® compressor from Thomas Division, a Gardner Denver Co. (Sheboygan, WI) features a footprint of 8.3 × 4 × 6.4" and sound levels of 50 dBA @ 20 PSIG. The compressor features a monolithic head that reduces leak paths, optional intake locations on the side and bottom, boltless construction to reduce vibration and noise, and center line-of-gravity mounting options. Maximum flow for the 115V/60 Hz compressor is 3.0 CFM, and maximum pressure is 30 PSIG.

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Speed Regulator

The Super-K Model Kinecheck speed regulator from Deschner Corp. (Santa Ana, CA) provides a 4" or 6" stroke unit in a short overall length. The leakproof models can handle loads of up to 1,200 pounds. The unit features a hardened tool steel highpressure cylinder with an adjustable flow control passage. The mirror-finished cylinder is mated to an all-metal piston with no sliding seals, which makes the plunger rod move smoothly at a constant rate through the entire stroke.

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Tilt Sensor Switches

NKK Switches (Scottsdale, AZ) has introduced the DSB Series of mercury-free tilt sensor switches. The through-hole, PCB-mounted devices use a photo interrupter for sensitivity to very small angle changes. The switches contain two solid-state devices: an infrared light-emitting diode and a photo transmitter. A nickel-plated ball rests at the focus point when the switch is level. The internal ball movement allows 360° circumference rotation. The switch is triggered when tilted beyond ±30° from horizontal.

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DC Gearmotor

Midwest Motion Pro ducts (Watertown, MN) offers the Model MMP-TM55-36-28V GP52-195 DC gearmotor that accepts any 24- 28V DC source, including battery power. The motor measures 2.14" in diameter and has a keyed output shaft of 12-mm diameter by 25 mm long. Mounting is accomplished with four facemount M5 threaded holes, equally spaced on a 40-mm-diameter B.C. Output is rated for 196 lb/in continuous torque at 12 RPM, and 443 lb/in peak. The motor requires 2.1 amps at 28V DC to generate full-load torque. Motor windings for 12, 36, 48, 60, and 90V are available. The design is rated at IP54 for operation in harsh environments.

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Motor Drive Integrated Circuit

International Rectifier (El Segundo, CA) has released the AUIRS2301S 600V integrated circuit for automotive motor drives, micro-inverter drives, and three-phase inverter applications. The rugged, general-purpose driver IC features independent high- and low-side referenced output channels and a gate drive supply range from 5 to 20V. The output drivers feature a high-pulse current buffer stage for minimum driver cross-conduction. The floating channel can be used to drive N-channel power MOSFETs or IGBTs in the high-side configuration operating up to 600V.

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Reciprocating Linear Drive

The Amacoil-Uhing Kinemax reciprocating linear drive from Amacoil (Aston, PA) features pitch adjustment and automatic reversal without requiring clutches, cams, or gears. A ten-toone pitch adjustment range is possible by turning the dial on the front of the drive unit. The unit reverses direction automatically without reversing the drive motor. A mechanical reversal device changes drive nut travel direction with no interruptions in operation and without adjusting any controls.

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Linear Motor Stages

Dover, a Danaher Motion Co. (Salem, NH), has introduced the MMG Mini-Mag linear motor stages available in four models that deliver 25, 50, 100, and 150-mm travel. They provide uncompensated accuracy ranging from 2 um to 8 um, and resolution ranging from 1.0 um to 5 nm. Each model delivers repeatability to ±0.4 um and is rated for 8 kg load capacity. Features include an integral anti-creep linear guideway that eliminates the need for homing moves typically required to reset standard crossed roller bearing retainer cages.

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Linear Stepper Motors

Johnson Electric (Vandalia, OH) offers the Saia® UAL series of linear stepper motors that deliver constant positioning force up to 30N over the full travel distance of up to 15 mm, at speeds up to 4.16 mm/s at 200 Hz. They feature a removable bayonet-style flange for mounting, a flexible design that accommodates custom requirements, and a 20 × 30-mm footprint for space-restricted applications. The motors are available in unipolar or bipolar models for use in instrumentation, valve control, dispensing, metering pump, auger, and medical automation applications.

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Magnetic Lifting Tool

Bunting Magnetics (Newton, KS) offers the MagFORKLift that works with any type of forklift to move up to 1,100 pounds of material. It attaches to the two forks of a forklift and works in conjunction with four different sizes of Bunting® MagLift™ hand-controlled lifters, which hold, carry, and release loads. The lifters attach to the lifting tool and use permanent magnets to hold. They do not require special cables or electrical hookups. The system can safely handle different shapes and sizes of loads, and concentrate magnetic energy to hold through air gaps and surface coatings. The magnet is “turned on” by rotating the control handle, and a mechanical locking mechanism ensures that it cannot be released accidentally.

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