Products

DC Gearmotor

Midwest Motion Products (Watertown, MN) has released the Model MMP-TM55-12V GPk52-124, a DC gearmotor that accepts any 12-volt DC source including battery power. This gearmotor measures 2.14" in diameter by 7.7" in length, and has a keyed output shaft of 12 mm in diameter by 25 mm in length. Mounting is done with 4 face-mount M5 threaded holes, equally spaced on a 40-mm diameter B.C.

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Slotted Brushless DC Servomotors

AMETEK Technical and Industrial Products (Kent, OH) offers the PITTMAN® Series 1300 slotted brushless DC servomotors that are available in three lengths: 1.5", 2", and 2.5". The servomotors are housed in precision-machined aluminum to promote lightweight designs and to integrate the front-endbell. Optional square flanges can be specified for NEMA 14 mounting. They are suitable for power applications in a variety of industries, including data storage, medical/biotech, semiconductor processing, and automation.

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Rotating Machinery Software

Vector Fields (Aurora, IL) has announced a design software for rotating electrical machinery that is part of the OPERA electromagnetic design tool. The software combines finite element analysis modeling with a design entry system that allows users to create electric motor or generator models. The software provides a front end to the electromagnetic simulator that speeds design entry by means of “fill in the blanks” dialog boxes. Users can select the form of motor or generator they want to design from a list of all common types, including induction, brushless permanent magnet, switched reluctance motors, and synchronous motors or generators. Then, by entering a list of parameters — such as diameters of rotor, stator, shaft, stator tooth width, number of stator slots — to define mechanical geometry, material properties, and electrical data, the model is automatically created. If there are any unusual features that need to be incorporated in designs, OPERA can offer open access to the scripting codes that generate the models, and users can modify them at will to create a proprietary automated design process. A library of material properties is also included in the design software that can be selected from a drop-down menu.

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VHD Assemblies

Kerk Motion Products (Hollis, NH) offers the VHD Series anti-backlash assemblies suitable for eliminating drag and wear associated with high pre-load forces. The VHD assembly uses Kerk’s patented axial take-up mechanism, creating a space that will continually expand to accommodate wear that may occur during use. The self-lubricating VHD Series reduces noise and dust as encountered in the packaging industry. Since airborne paper dust is regularly generated in the cartoning and case packing area, almost everything eventually becomes covered in a light layer of dust. The VHD screw does not require grease to operate and therefore reduces noise and dust.

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Micro-Positioning Stages

LM76 (East Longmeadow, MA) offers micro-positioning stages available in travel lengths from 10 mm to 200 mm. The Micro Stage linear positioning stages are available with 6-mm anti-backlash lead screws or 4-mm lead ball screws. They are suitable for pick-and-place, assembly, sampling, testing, and robotics. The Lead Screw Micro Stage linear positioning stages are available in three travel lengths: 10 mm, 30 mm, and 40 mm. Features include 0.03-mm repeatability, 0.03-mm/full step resolution, and maximum speeds of 50, 80, and 100 mm/sec. The maximum load for all lead screw stages is 4.9 N.

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Direct-Drive Frameless Motors

The ULT Series of direct-drive frameless motors from Applimotion (Loomis, CA) is available in sizes down to 27 mm in diameter with axial length to 8 mm and up to a 20-mm through hole. They operate from traditional three-phase trapezoidal or sinusoidal motor controllers ranging from 12 to 320 volts DC. They can achieve speeds to 10,000 rpm, which may be useful in some scanning applications. Hall devices and cable/connector options are available. ULT motors are suitable for applications needing direct-drive low-profile motors such as optics applications and direct-drive rotary table systems. The ULT motors can be used for precision positioning with the user of a high-resolution encoder or for continuous scanning in medical devices, computer component manufacturing, or optical inspection.

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Flexured Couplings

Helical Products (Santa Maria, CA) offers miniature couplings, u-joints, and machined springs with integrated attachment components. The line includes couplings with an unlimited variety of customized ends. All of these products utilize the HELI-CAL® Flexure. The configuration of attachments can vary from plain bore to pinion gear. These flexured couplings and u-joints are backlash-free and provide constant velocity rotation regardless of misalignment. With proper attachment, the devices may minimize assembly production time, and reduce the total number of parts purchased, inventoried, or assembled.

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