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Power Transmission and Motion Control

Power Transmission and Motion Control

Bushings

PEL-T(TM)rolled-steel bushings feature a pattern of lubricant cavities, thermochemical surface treatment, and impregnation on all surfaces for good surface hardness and friction. De-signed for heavily loaded joints, the bushings withstand temperatures up to 482F and dynamic pressure to 200 N/mm2. Operating speed is 10 m/sec maximum.

HEF USA , 2860 Fisher Rd., Columbus, OH 43204; FAX (614) 276-6377; www.hef.fr .

Motors

Rugged cast-iron construction and a bearing cavity sealed from moisture let Coolling Tower Multi-Speed motors operate in wet environments. The three-phase, 60 Hz, Class F motor is available from 3 to 100 hp.

Rockwell Automation , 6040 Ponders Ct., Greenville, SC 29615; FAX (864) 281-2433; www.reliance.com.

Transport line

Designed for JIT cell-based manufacturing, the FlexiMate Transport Line consists of individual modular workstations that can be quickly reconfigured. Cells are constructed from anodized aluminum tubing and engineered glass-filled polycarbonate fittings, and support up to 150 lbs. Product flow is manual via track-mounted transport carts, which enables real-time manufacturing flow adjustment.

Worksmart Systems Inc. , 3 Lakeland Park Dr., Peabody, MA 01960; FAX (978) 536-5055; www.worksmartsystems. com.

Stepper driver

The 2.5A CY-45 motor driver works with 2- and 4-phase step motors in full/half step mode. An on-board terminal strip supplies interfaces to the power supply (up to 45V dc), motor, and control signals. The module measures 3.25x2.125x1.15 inches and can mount vertically or horizontally.

Cyberpak Co. , 2508 Wisconsin St., Downers Grove, IL 60515; FAX (630) 493-0956; www.cyberpakco.com.

Actuators

Miniature, ac, and dc clevis-to-clevis Performance Pak actuators have a 25% duty cycle. Miniature units feature corrosion-resistant aluminum tubes and built-in end-of-stroke limit switches. Models are available in 12 and 14V dc with capacities of 25 or 110 lbs, speeds of 0.61 to 2.0 inches/sec, and strokes of 2 to 10 inches. Industrial actuators have powder-coated exteriors and stainless-steel lift tubes for longer life. Ac and dc versions have strokes of 4 to 24 inches and capacities of 250 or 1,000 lbs.

Thomson Saginaw , 2 Channel Dr., Port Washington, NY 11050; FAX (516) 883-9039; www.thomsonindustries.com.

Bearings

The outer race of Hevi-Rail bearings has the high radial capacity of a heavy-duty roller bearing. Within this outer bearing is a perpendicular inner bearing that handles axial or side loads. Bearings are available in fixed and adjustable eccentric versions. Sizes range from 52.5 to 149 mm OD; single bearing capacities range from 5,000 to 33,500 lbs.

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

Servo drive

The 5.09x3.48x0.99-inch BX15A20 PWM servo amplifier provides trape-zoidal commutation using Hall sensors. The drive operates in current or velocity mode, accepts 40 to 190V dc inputs, and is rated for 15A peak, 7.5A continuous output.

Advanced Motion Controls , 3629 Vista Mercado, Camarillo, CA 93012; FAX (805) 389-1165; www.a-m-c.com.

Rotary tables

Monoblock body construction lets Tsudakoma high-speed NC rotary tables accept up to four spindles and offer speeds up to 83 rpm. High-pressure hydraulics increase efficiency for long-run operations.

Koma Precision Inc. , 20 Thompson Rd., East Windsor, CT 06088; FAX (860) 623-4132; www.komaprecision. com.

Drives

Users can program SPEEDMASTER SM Basic drives via buttons on the drive face or by using a removable electronic module. Designed for con-trolling smaller ac motors, the drives are available up to 3 hp and in versions for single- and three-phase input. Features include: forward/reverse, slip compensation for 1% speed regulation, and multiple speed presets.

Leeson Electric Corp. , Box 241, Grafton, WI 53024-0241; FAX (262) 377-9025; www.leeson.com.

Brakes

Power-off brakes mount to the front end of a stepper or servo motor as an added safety feature or for holding the load in place. Models FEB, RFEB, and SSB fit NEMA 23, 34, and 42 frames and offer several torque ranges.

Electroid Co. , 45 Fadem Rd., Springfield, NJ 07081; FAX (973) 467-5656; www. electroid.com.

Gear parts

Forged gear parts-including gear blanks, single and double hubs, couplings, flanges, rings, and shafts-are available for producing helical, spur, bevel, hypoid, and other gear products. Users can specify parts "as forged," rough machined, heat treated, and tested. A range of gear-quality alloys meets material specifications for through hardening, carburizing, H Band, AMS, MIL-S-5000, and AGMA.

Scot Forge, Box 8, Spring Grove, IL 60081; FAX (847) 587-2000; www.scotforge.com.

Load cells

Environmentally sealed, piezoelectric load cells are available in English and metric versions with measuring ranges up to 5,000 lb (22,000N) compression and 500 lb (2,200N) tension. The square, low-profile 9222 has a radially positioned electrical connector and two axially located threaded mounting holes. Model 9208 has both the electrical connector and mounting stud concentric with the axis of the cell body.

Kistler Instrument Corp. , 75 John Glenn Dr., Amherst, NY 14228; FAX (716) 691-5226; www.kistler.com.

Brushless motors

EC series brushless "pancake" motors are electronically commutated, which is said to provide extremely long motor life due to the absence of mechanical brushes. The design is also said to achieve good heat dissipation and high overload capability through the placement of coils outside the rotor. The weight of the motor is 57 g, continuous output power is a reported 6W, with a maximum speed of 10,000 RPM.

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

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