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Power Transmission and Motion Control

Power Transmission and Motion Control


DL Bearings are designed to allow oil directly onto the rolling contact surfaces of the spindle bearings to optimize performance. According to the company, they allow high speeds, up to 2.8x10 6 mm/min, to be reached. O-rings are used to concentrate the lubricant into the critical bearing areas. The bearings are aimed at high-speed applications such as machine tool spindles and pumps.

Barden Corp. , Plymbridge Rd., Estover, Plymouth England, PL6 7LH; FAX 44 01752 73348.

Digital servo drives

En-series digital servo drives are designed primarily for OEM use and are recommended by the company for packaging and automated assembly. They can reportedly be configured in less than two minutes and will operated with up to a 10:1 load to motor inertia ratio right out of the box. However, inertia, friction, and response can be custom set to permit operation with an inertia mismatch of up to 50:1.

Control Techniques , Sundon Business Park, Dencora Way, Luton, Beds UK LU3 3HP;

Metric gears

An expanded line of metric gears and accessories is now available from this company. Products available include spur gears, internal gears, screw (crossed helical) gears, helical gears, racks, miter gears, bevel gears, worms and worm gears, and gear couplings. Materials available include case hardened steel, stainless steel, brass, aluminum, bronze, Nylon, and Duracon.

Quality Transmission Components , 2101 Jericho Tpke., Box 5416, New Hyde Park, NY 11042; FAX (800) 737-7436; .

Belt driven slides

A series of five belt driven slides from this company are said to offer speeds of up to 5 meters per second in a wide variety of motor and carriage configurations. The slides, designated as Blue Line 1, Blue Line 3, and ZF 1, 2, and 3, all feature an HTD timing belt and home position switches with a reported accuracy of under 0.1 mm and repeatability of less than 0.2 mm.

Techno-Isel , 2101 Jericho Tpk., New Hyde Park, NY 11042-5416; FAX (516) 358-2576; .

Spur gearheads

NEMA size 34 spur gearheads from this company are said to offer a lower cost alternative to more complex planetary designs. The products feature simple clamp-on pinions which are said to allow easy field installation, and provide torque multiplication, speed reduction, inertia matching, and resolution enhancement for dc servo, stepper, and brushless servo motors.

Stock Drive Products , Box 5416, New Hyde Park, NY 11042-5416; FAX (516) 326-8827; .

Modular motor drive

Magnum Motor Drive Series(TM)products consist of three half-bridge drives rated at 600V and 65A, and are designed to drive brushless dc, induction, and brush motors. Products include the basic Model 75, which contains an isolated power supply and a pair of gate drivers; the current sense Magnum 75, which adds an isolated current sense circuit, and the regen Magnum 75, which has an isolated regenerative clamp circuit.

Data Device Corp. , 105 Wilbur Place, Bohemia, NY 11716-2482; FAX (631) 567-7358; .

Motion modules

S2K series brushless servo and stepper modules are said to feature DeviceNet(TM)communications, all digital-drive technology, and control capabilities in a standalone integrated package. The products are available in servo amplifier, servo controller/amplifier, and stepper controller/amplifier configurations, and feature a two-character LED which displays real-time diagnostic updates.

GE Fanuc Automation , Box 229, Whitehall, PA 18052; FAX (610) 437-5212; .

Stepper/servo brakes

FEB (Front End Brake) is said to be a failsafe, power-off brake designed to be mounted on the front end of stepper or servo motors as a safety feature, or for holding loads in place by acting as a parking brake. The brakes are available in NEMA 23 and 34 sizes, offer torque ranges from 4 to 106 in-lbs., and are said to be compact, powerful, and cost-efficient.

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

Rotary tables

Monoblock body construction lets Tsudakoma high-speed NC rotary tables accept up to four spindles andoffer 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; .

Motion control kit

This bundled Developer's Kit version of the company's PCI bus-based motion controller, NextMove PCI. It provides programming software, manuals, cables, and motion control and I/O interfacing hardware. The kit also includes an I/O adapter that allows users to users evaluate the upgraded performance of the new controller.

Baldor UK Ltd. ; 6 Bristol Distribution Park, Hawkley Dr., Bristol BS32 0BF, UK; FAX +44 0 1454 859001;


When fitted at the floating end of the shaft, CARB(TM)toroidal roller bearings are said to improve performance of the bearing systems and the spherical roller bearing at the fixed end. They also reportedly offer greater shaft misalignment tolerance, elimination of fretting corrosion, reduced heat, lower maintenance costs, and the elimination of the need for shaft coatings or sleeves.

SKF UK Ltd. , Sundon Park Rd., Luton, Bedfordshire UK LU3 3BL;

Servo actuator

Exlar PSA series geared servo actuators are designed to combine the security of single source supply with the advantages of compact size and the ability to be used with most commercial servo amplifiers, according to the company. They provide 3, 5, and 10:1 reductions in a single unit. Reportedly no pinion clamps are necessary, because the company delivers the actuators already assembled.

INMOCO , 4 Brunel Close, Drayton Fields, Daventry, England NN11 5RB; .

Magnetic clutch bearings

Magnetic clutch bearings are designed with double row bearings, a one-piece inner ring, a 2-point contact, low torque sealing systems, and special grease. They are usually located within the clutch of an automotive air conditioner compressor at the drive end of the unit. They are intended to cope with heavy loads, severe operating environments, high temperatures, vibration, and contaminants.

NSK-RHP UK Ltd. , Mere Way, Ruddington, Notts, UK NG11 6JZ.

Safety couplings

DMK/L torque-limiting safety couplings are designed to provide electric-powered plastic injection molding machines with protection against damage caused by disengagements. The products are available in torque ranges from 30 Nm to 1,600 Nm, bore sizes from 1/2 to 31/2 inches, and in mechanical or magnetic styles. The product is said to provide backlash-free torque transmission, and protection from speed surges.

Rimtec Corp. , 825 N. Cass Ave., Westmont, IL 60559; FAX (630) 325-1404; .

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; .

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