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Load Cells

A family of industrial load cells from Stellar Technology (Amherst, NY) includes 20 models covering ranges from 5 lb to 1,000,000 lb. These cells are available in pancake, rod end, miniature, through-hole, load pin, beam, and canister designs. The cells incorporate welded stainless steel or high-strength alloy construction. All have strain gage technology and resist shock and vibration.

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Linear Actuators and Amplifiers

Four new series of piezoelectric stacked actuators from Physik Instrumente L.P. (Auburn, MA) are equipped with the advanced PIC 255 PICA(TM) Power piezoceramic stacks. Designated the P-212, P-216, P-225, and P-235, the actuators come with load capacities from 2,000 to 30,000 Newtons and travel ranges from 15 to 180 micrometers. All the actuators provide sub-nanometer resolution and available with position feedback for higher positional accuracy.

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Absolute Encoder

The Acuro(TM) AD34 and AD35 absolute encoders from Dynapar (Gurnee, IL) utilizes the company’s proven OptoASIC engine for reliable absolute positioning and speed feedback up to 10,000 RPM. This high-speed capability, coupled with an operating temperature range of up to 120°C, suits it for servomotors. In addition to its compact 37 mm diameter and short mounting depth, the encoder is available with a Mylar code disc capable of up to 17 bits of single-turn resolution.

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PTFE Bearing Liner

A maintenance-free PTFE bearing liner from Aurora Bearing (Montgomery, IL) provides an alternative to fractured race and light series spherical bearings in hydraulic cylinders in both Metric and inch versions. They are best used in static situations where potential misalignment cannot be accommodated by plane bushings or clevises and pins. Maintenance-free PTFE lined bearings have a close tolerance fit between ball and race, improving precision and life over metal-on-metal fractured race bearings.

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Single-Axis Motion Control

Maxon’s (Fall River, MA) Freedom Series motion control development tool is a motion control package offered with a choice of four brushless motor options sized from 16 to 40 mm in diameter and up to 1/16 hp. It comes with Maxon’s priority Graphical User Interface software and instruction wizards. The plug-and-play package includes all cables and connectors.

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Linear Translation Stages

Linear translation stages from Edmund Optics (Barrington, NJ) are available with travel track distances as long as 24 in. The stages use rack-and-pinion positioning with accuracy of 0.01 in., and are designed to allow easy integration of standard English-unit positioning equipment.

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Linear Actuated Sensor

BI Technologies’ (Fullerton, CA) 400 Series linear actuated sensor is offered with and without end bearings to suit the different grades of various applications. Redundant output is available, and stroke size ranges from 0.5 to 6.0 in. The sensor has been specified for use by a business jet manufacturer and has received FAA approval. It is available with various options in order to meet requirements for a range of sensing applications.

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