2000 New Products Bonanza

August 21, 2000


Designed to carry high loads generated by a cantilevered enclosure, the Power-Core(TM)roller with integrated roller bearing is quiet enough to be designed into incubators for neonatal wards. The precision-machined roller generates low rolling resistance. The tire material doesn't absorb moisture, is dimensionally stable, absorbs shock and vibration, and resists wear. The part suits indoor and outdoor applications and has a temperature range of -40 to 120F.

Intech Corp., 250 Herbert Ave., Closter, NJ 07624; FAX (201) 767-7797; www.intechpower.com.

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Offering peak torque ratings of 12.5 to 225 ft-lbs, the GOLDLINE DDR (direct drive rotary) brushless servomotor comes in frame sizes from 6.9 to 11.2 inches. The motor mounts directly on a machine, and a large-diameter hollow shaft allows for fluid, pneumatic, or electrical feed-throughs. Applications include rotary tables, robots, and semiconductor processing equipment.

Kollmorgen Motion Technologies, 201 Rock Rd., Radford, VA 24141; FAX (540) 731-0847; www.kollmorgen.com.

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The PSCAL pneumatic cylinder continuously monitors piston position for the full cylinder stroke. The aluminum unit incorporates a noncontact, absolute-position-sensing transducer, which has high immunity to shock and vibration and comes with analog or digital outputs. Standard bore sizes are 1.5 to 8.0 inches; standard stroke is 2.0 to 60 inches.

Miller Fluid Power, 800 N York Rd., Bensenville, IL 60106; FAX (630) 766-1098.

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The EM1000 industrial-grade modem connects RS-232 devices to Ethernet networks. Features include RS-232 data and configuration ports, 10BaseT Ethernet port, remote configuration via Telnet, multi-slave networking ability, and restricted security-access mechanism. The device suits factory floor setups in plants that have existing Ethernet networks.

Z-World, 2900 Spafford St., Davis, CA 95616; FAX (530) 753-5141; www.zworld.com.

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The Stepping Motor Cube integrates a NEMA 23 stepping motor, drive, and control. DeviceNet communication maintains a simple interface to the main controller while enabling easy loading of new position and velocity commands from the network scanner. Three motor frame sizes and several motor windings are available with a 3A rms continuous rating to manage torque levels of 50 to 175 inch-oz.

Whedco Inc., 1050 Highland Dr., Ann Arbor, MI 48108; FAX (734) 665-6694; www.whedco.com.

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More than 3,000 sizes of iglide(R)engineered-polymer bearings are available from stock. Offered in 13 material grades, the self-lubricating bearings resist corrosion and help dampen vibration. Recent additions to the line are the iglide H370, which features 0.0% radial swelling for underwater applications, and iglide D, an economical version that offers a low coefficient of friction and high abrasion resistance.

igus inc., Box 14349, East Providence, RI 02914; FAX (401) 438-7270; www.igus.com.

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Linear motion

Two pre-assembled, twin-track linear motion systems feature polyurethane-coated nylon bellows to protect bearings and lead screws in debris-laden environments. System 9B has a 3/4-inch suspended shaft and a 1/2-inch-diameter lead screw. Five travel lengths are available from 2.9 to 15.4 inches. System 10B incorporates precision-machined, supported rails that are integral to the base plate. Ten travel lengths range from 3.5 to 29.6 inches.

PIC Design, Box 1004, Middlebury, CT 06762-1004; FAX (203) 758-8271; www.pic-design.com.

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This company offers three models of front-end brakes that are designed to work on stepper and servo motors. They come in a variety of sizes and torque ranges. The FEB, FREB, and SSB models are all power-off units that mount to a motor's front end as an added safety feature or for holding the load in place. Custom designs-including special mounting flanges, shaft configurations, wire terminations, and voltages-are also available.

Electroid Co., 45 Fadem Rd., Springfield, NJ 07081; FAX (973) 467-2606; www.elec-troid.com.

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A linear slide system based on FrelonGOLD(R)plane bearing material, Dolphin Guides offer multiple drive choices. Options include ball screw, belt drive, lead screw, and cylinder. Repeatability can be as low as 0.0002 inch, depending on drive mechanism. The guides use ceramic-coated rails instead of rolling elements

Pacific Bearing, Box 6980, Rockford, IL 61125; FAX (815) 389-5790; www.pacific-bearing.com.

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High-capacity, spring-engaged Eclipse servo motor brakes provide positive stopping torque with enough holding force to stall a servo motor. The flange-mounted device attaches directly between the servo motor and industry-standard NEMA outputs, such as gearboxes. Models are available for 2-, 3-, 4-, and 5-inch servo motor frames.

Nexen Group Inc., 560 Oak Grove Pkwy., Vadnais Heights, MN 55127; FAX (651) 286-1099; www.nexengroup.com.

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Econo Series single-axis controllers include an integrated PWM amplifier. The DMC-1416-Brush can drive a brush-type motor at up to 12A continuous, 60V; the DMC-1416-Brushless can power a brushless motor at up to 6A continuous, 60V. Both models feature an extra encoder input for electronic gearing, program memory with multitasking, and uncommitted I/O.

Galil Motion Control, 203 Ravendale Dr., Mountain View, CA 94043; FAX (650) 967-1751; www.galilmc.com.

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Packaged as a compact panel-mount assembly, the MicroLYNX motion control system integrates a bipolar stepper motor, programmable indexer, expandable I/O, and multiple communications ports. Two power ranges are available: MicroLYNX4 runs from 12 to 48V dc with 3A rms output, and MicroLYNX7 uses 24 to 75V dc with 5A rms output. Features include: 6 general-purpose I/Os, 2 communications ports, open- and closed-loop stepper control, and programmable current settings.

Intelligent Motion Systems Inc., Box 457, Marlborough, CT 06447; FAX (860) 295-6107; www.imshome.com.

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These NEMA size 23 high-torque stepping motors provide holding torques up to 250 inch-oz. Position accuracy of the 1.8-degree motor is plus or minus 3% of one step. Several windings are available for bipolar and unipolar drives with four and six leads, respectively. Motors to match existing systems can be furnished with five or eight leads. Other options include: connector type, feedback devices, mountings, and shaft modifications.

EAD Motors, 1 Progress Dr., Dover, NH 03820-5450; FAX (603) 742-9080; www.eadmotors.com.

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An alternative to slotless and brush-commutated motors, the ELCOM ST(TM)slotted brushless dc servomotor delivers speeds up to 8,000 rpm and power up to 107W. Continuous torque output is 32 inch-oz max. The 2.3-inch-diameter motor has standard stack lengths of 1/2 and 1 inch. Applications include imaging, medical diagnostic devices, and computer peripherals.

Pittman, 343 Godshall Dr., Harleysville, PA 19438-0003; FAX (215) 256-1338; www.pittmannet.com.

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TS4plus conveyor modules use power-and-free roller chain technology to achieve payload capacities up to 550 lbs. Edge-guided pallets come in sizes ranging from 460x460 to 1,260x1,260 mm. The modules also accommodate user-supplied pallets or carriers, and are part of the company's TSplus flexible assembly conveyor product line.

Bosch Automation Products, 816 East 3rd St., Buchanan, MI 49107; FAX (616) 695-3446; www.boschat.com.

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Available in six ratios from 7.3:1 to 38:1, GNM Series right-angle drives have motors that measure 34 to 45 mm in diameter. The assembled motor-gearhead units are about 6 inches long and weigh 18 to 28 oz. Backlash is typically 1.2; gearhead efficiencies are up to 79%. Maximum continuous output torque is rated at 149 inch-oz, while 283 inch-oz is the maximum intermittent torque.

Micro Mo Electronics, 14881 Evergreen Ave., Clearwater, FL 33762-3008; FAX (727) 573-5918; www.micromo.com.

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The RC-0411 servo system combines a controller, amplifier, encoder, and motor in an 89x42x61-mm housing. Termi-BUS(TM)technology gives the system unified control of mix-and-match brushless and stepping motors, which allows a single command controller to drive both simple and high-performance actuators. Maximum motor speed is 4,500 rpm; rated output is 80W.

Star Micronics, 1150 King Georges Post Rd., Edison, NJ 08837-3729; FAX (732) 623-5590; www.starmicronics.com.

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The Power Ring helps improve torque control in motor and drive gear assemblies and can replace conventional slip clutches in some applications. The ring's modified corrugation profile results in better deformation, allowing accurate control of the torque at which mating components are allowed to slip. An optional factory-applied solid lubricant eliminates the need for separate high-pressure greases.

USA Tolerance Rings, Box 7509, West Trenton, NJ 08628-0509; FAX (609) 538-1110; www.usatolerancerings.com.

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Brakes and

Electronically operated ZF Hysteresis brakes and clutches provide contact-free torque transmission. Users can adjust slip torque and synchronous torque to any level between zero and the maximum by altering the magnet coil current. An electronic control unit is available for controlling the torque of the brakes and clutches in an open- or closed-loop circuit.

ZF Industries, 777 Hickory Hills Dr., Vernon Hills, IL 60061; FAX (847) 478-6885; www.zf-group.com.

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Caged-ball(TM)technology lets SSR, SNR, and SHS linear motion guides offer smooth, consistent gliding motion. A retainer separates and aligns the recirculating ball bearings, eliminating the heat of ball-to-ball friction and the noise of ball-to-ball contact. Grease pockets within the cages should minimize long-term maintenance.

THK America, 200 E Commerce Dr., Schaumburg, IL 60173; FAX (847) 310-1182; www.thk.com.

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A line of self-centering dampers allow controlled movement in extension and compression while providing a controlled rate of return from either direction to a neutral position. The dampers consist of an oil-filled inner damping tube wrapped by counteracting torsion springs, all encased in a zinc-plated outer tube. Models SCD09 and SCD12 provide centering forces of 9 and 12 pounds, respectively. Both extend or compress 1.2 inches from a neutral length of 8.80 inches between mounting centers.

H. A. Guden Co., 99 Raynor Ave., Ronkonkoma, NY 11779; FAX (631) 737-2933; www.guden.com.

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Suitable for hydraulic or pneumatic applications, the 2MA cylinder with linear position sensor senses a piston's position in relation to its stroke to the nearest one-thousandth of an inch. Bore sizes range from 2 to 8 inches; multiple mounting configurations are available.

Parker Hannifin-Hydraulics, 6035 Parkland Blvd., Cleveland, OH 44124; FAX (216) 896-4031; www.parker.com/cylinder.

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A smart battery charger is integrated in the HESC104 dc-to-dc converter. Outputs are 5, 12, -5, and -12V; output power is up to 60W. A flash-based microcontroller manages a 4A multistage battery-charger output and stores charging algorithms for SLA, NiCd, and NiMH batteries. Adding a battery pack lets the PC/104-compliant unit operate as an uninterruptible power supply.

Tri-M Systems, 6-1301 Ketch Ct., Coquitlam, British Columbia V3K 6- 6X7; FAX (604) 527-1110; www.tri-m.com.

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HOLO-ROL(TM)cylindrical roller bearings use hollow rollers instead of solid ones. This gives the devices greater radial stiffness and vibration damping than conventional bearings, reduces weight for lower centrifugal forces at high speed, and allows lubricant to flow through the rollers to dissipate heat. Rollers are preloaded to maintain constant contact with the rings.

Kaydon Corp., 2860 McCracken St., Muskegon, MI 49443; www.kaydoncorp.com.

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A frictionless, limited-rotation cross-spring bearing, the Free-Flex(R)Pivot provides angular travel up to plus or minus 30 degrees . The part reportedly requires no lubrication or maintenance. The pivot has high radial and axial stiffness to maintain repeatability to plus or minus 0.000001 inch in one plane of motion with low hysteresis, center shift, and thermal drift.

TRW Aeronautical Systems, Box 457, Utica, NY 13503; FAX (315) 793-1273; www.lucasutica.com.

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Ball screw
and linear guide technology

Plastic retaining pieces placed between traveling balls are reported to increase life and decrease friction by eliminating direct contact. The plastic retainers position, secure, and cushion balls as they travel through the grooves, providing reduced noise and vibration levels. Torque characteristics, especially at low speeds, are also said to be improved. The technology increases load carrying capacity and rigidity to provide superior smoothness over systems utilizing spacer balls. Long-term benefits include reduced maintenance and longer product life.

NSK Corp., 250 Covington Drive, Bloomingdale, IL 60108-3116; FAX (630) 924-8197; www.nsk-corp.com.

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Designed for brushless motors, the DES 50/5 digital servo-amplifier uses 50-kHz sinusoidal commutation to ensure smooth velocity and torque control even at low speeds. The 4-quadrant unit requires motors to have both Hall effect sensors and a digital encoder, and has integrated motor chokes for use with low-inductance motors. The amplifier requires 12 to 50V dc and can deliver 90% of the supply voltage to the motor at 5A continuous or 15A peak.

Maxon Precision Motors, 838 Mitten Rd., Burlingame, CA 94010; FAX (650) 697-2887; www.mpm.maxonmotor.com.

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Miniature and instrument bearings come in a wide range of inch and metric sizes. Bore diameters are as small as 0.0236 inch (0.6 mm). Bearing materials include 52100 chrome steel, 440C stainless steel, 400 Series Martensitic stainless steel, ceramics and hybrid ceramics. Some sizes are also available with thin dense chrome-plated rings with various retainer materials. Open shielded and sealed types are available in standard, extended-inner-ring, and flanged versions.

AST Bearings, 115 Main Rd., Montville, NJ 07045; FAX (973) 335-6987; www.astbrgs.com.

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