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Motion System Design


Incremental encoders

Leine & Linde incremental encoder model 862 offers resistance to high vibration and shock, and is electrically insulated up to 2.5 kV.

Features & benefits

  • Meets IEC 68-2-6 and IEC 68-2-27 standards

  • Short-circuit protected outputs; reverse polarity protection

  • 1,000, 1,024, 2,048, 2,500, 3,072, 4,096, and 5,000 line counts with high-current HTL and HTL outputs

  • Hollow-shaft diameter comes with three configurations — 12 and 16-mm diameters; 17 mm taper

Heidenhain Corp.
Schaumburg, Ill.
(847) 884-3713
Circle 157

Servo amplifier

The 0.76-oz Castanet analog servo amplifier comes in 60-V model with continuous current to 3.3 A, and 100-V model with current to 2.5 A.

Features & benefits

  • 330 W peak; 180 W continuous power

  • Operates as current mode standalone device or as integral part of multi-axis system

  • Operates from dc power source in current mode; controls dc brush and brushless motors

  • High current loop bandwidth and output linearity

Elmo Motion Control Inc.
Westford, Mass.
(978) 399-0034
Circle 158

Direct-drive rotary stages

ALAR-series rotary stages provide angular positioning sensing and velocity control with large apertures, load capability, and high speeds.

Features & benefits

  • Five aperture sizes — 100, 150, 200, 250, and 325 mm

  • 45 to 300 rpm continuous rotation speed; continuous or limited travel

  • Axial load capacity of 300 to 1,000 lb

  • Zero backlash; no gear wear or vibration

Aerotech Inc.
Pittsburgh, Pa.
(412) 967-6854
Circle 159

String pot transducers

Line of IP68-rated string pots have aluminum or stainless-steel housings for submersible use.

Features & benefits

  • 100 ft molded electrical cable eliminates need for submersed electrical connection

  • Linear measurement ranges from 2 to 1,700 in. and rotary ranges from ⅛ to 200 turns

  • Can be specified with potentiometer, 4 to 20 mA, or 0 to 10 Vdc outputs

Celesco Transducer Products Inc.
Chatsworth, Calif.
(818) 701-2750
Circle 162

Universal joint couplings

Reich Arcusaflex VSK U-joint couplings provide torsional dampening for connections between combustion engines and driven components.

Features & benefits

  • Eight sizes in U.S. and metric; metric, spicer, and mechanics Cardan shaft connections with torques from 3,450 to 141,4000 lb-in.

  • Mount to flywheel; attach through Cardan shaft to power take-off, converter gearboxes, and pump drives

  • Transmit weight of Cardan shaft and absorb and attenuate reactive forces acting on connection

  • Protect drive train from mechanical strain; reduces frequencies below operating speed and limits torque spikes

  • Complete catalog available

Ringfeder Corp.
Westwood, N.J.
(800) 245-2580
Circle 163

Brushless servomotors

MPN brushless servomotors replace N-series motors from Rockwell Automation/Allen-Bradley and offer more torque.

Features & benefits

  • 2,000-line encoder, 24 V brake option, and rated for 340 V dc bus

  • UL and CE rated; sealed to IP65

  • Front motor mount, shaft dimensions, connectors, and electrical Ke identical to N-series

  • Neodymium magnets provide high torque

  • Inertia within 10% of N-series; nearly eliminates need for tuning

Parker Hannifin Corp., Electromechanical Automation Div.
New Ulm, Minn.
(507) 233-2316
Circle 164


Slide-Rite gearboxes come in 3:2 and 2:1 gear ratios and metric versions in 1:1 ratios.

Features & benefits

  • Bores from ¾ to ¼ in.; full and compact metric sizes with bores from 12 to 30 mm

  • Two 45° helical gears mesh at right angles and turn power at 90°

  • Input speeds to 1,200 rpm with only 1° backlash on reversal of input

  • Slide-through shafting allows axial sliding along keyed shafts in either direction, limited only by length of keyway

  • Maintain perfect alignment; eliminate need for chain sprocket drives and adjustments

Tol-O-Matic Inc.
Hamel, Minn.
(800) 328-2174
Circle 165

Multi-axis machine controller

MP2300 machine controller, suitable for routine and complicated processes, eliminates discrete PLC and motion controller components.

Features & benefits

  • Digital network runs at 10 Mbps and handles up to 20 nodes; 16 nodes populated by network servo amplifier

  • Up to three networks can be connected with motion axes synchronization for a total of 48 Sigma series servos

  • Connection to factory supervisor and remote I/O done by serial, Ethernet, DeviceNet, and Profibus/DP

  • Plug-and-play for rotary and linear servomotors makes for easy use

Yaskawa Electric America Inc.
Waukegan, Ill.
(800) 927-5292
Circle 166

Dc gearmotors

Dc gearmotors accept any 24 Vdc source, including battery power.

Features & benefits

  • Low profile — 2.14 × 7.7 in.; keyed output shaft of 12 × 25 mm

  • Mounts with four face-mount M5 threaded holes

  • 80 lb-in. continuous torque at 58 rpm, and 448 lb-in. peak

  • Windings for 24, 36, and 90 V available

Midwest Motion Products
Watertown, Minn.
(952) 955-2626
Circle 167

Microactuator bearing assembly

Pivot ball bearing assembly is 25% thinner than its predecessor at 1.83 mm high to support small systems.

Features & benefits

  • Serves as a support for read/write head on discs in 2.5 mm HDD; thinner than flash memory-type media CF card with larger storage capacity

  • 0.1 mm bearing cage wall made of resin; nano-scale fiber reinforcement boosts impact resistance by 25%

  • Lower torque and reduced friction compared to conventional steel cage

NSK Corp.
Ann Arbor, Mich.
(734) 913-7500
Circle 168

Stepper motor and driver

RoHS-compliant αStep stepping motor and driver uses closed-loop control to eliminate missteps and loss of synchronization.

Features & benefits

  • Four frame sizes — 28, 42, 60, and 85 mm — interface to three drivers as motors or geared motors

  • Dc input (ACS series) with pulse input package and ac input (AS series) with pulse input and built-in controller packages

  • Three driver types and three motor types — standard, IP65, and geared

  • Sensor detects step motor rotor's position by sensing change in inductance between moving rotor and stationary stator teeth

Oriental Motor USA Corp.
Torrance, Calif.
(800) 418-7903
Circle 169

Servo reducers

Three new servo worm reducers are available for high-torque (HT), economy (E-servo), and basic (B-servo) applications.

Features & benefits

  • HT offers 150% the torque capacity of the standard model and reduces backlash to less than 1 arc-min

  • E-servo offers same torque capacity as standard, with backlash of less than 6 arc-min

  • Basic offers 90% torque capacity of standard with backlash of less than 12 arc-min

  • Range of motor couplings and mounting flanges available

  • Hollow-bore output can be used to mount output shafts, pinion shafts, or other drive elements

Atlanta Drive Systems
Farmingdale, N.J.
(800) 505-1715
Circle 170

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