Hydraulics & Pneumatics articles from June 2002

Hydraulics & Pneumatics archives from June 2002

Brush and floss -- the Pneumatic way. (Editor's Page).
June 1, 2002... As editors of Hydraulics & Pneumatics, we rarely have the opportunity to review products directly. Most of the components and machinery we talk about in this magazine would require a rather hefty freight bill, if not a separate truck, to...

Readers' forum.
June 1, 2002... Variety of hydraulic fluids lets you "have it your way." With regard to the article on hydraulic fluids in your May 2002 issue, I offer the following. Any hydraulic fluid has its own particular set of advantages and disadvantages -- whether...

Multiple HSTs run surface-mining equipment. (Ideas & Applications).
June 1, 2002... Designers at Vermeer Manufacturing Co., Pella, Iowa, developed the Terrain Leveler as an attachment for their established T1255 Commander rock trencher. The machine combines toughness with technology. The Terrain Leveler is aimed at the...

Soft-sided tool boxes don't dent or scratch. (Ideas & Applications).
June 1, 2002... Maintenance personnel lug their traditional metal tool boxes around like badges of honor, but over time, it's almost impossible to avoid scratching, gouging, or denting nearby equipment or furniture with those unwieldy old-fashioned containers....

PWM enhances solenoid operation. (Ideas & Applications).
June 1, 2002... Solenoids have been the most popular operators for air valves since pneumatic technology was born. Yet valve designers today still have to deal with the sometimes contradictory operating requirements of the solenoids for the products they...

Pipe and tank wrap is flexible and economical. (Ideas & Applications).
June 1, 2002... CrimpWrap pipe and tank wrap was designed to insulate vessels and large-diameter pipes with internal service temperatures from 350[degrees] to 8500[degrees] F, but also can serve to protect fluid power conductors that must be routed through...

Motion control via electro-servo-pneumatics. (Pneumatic Systems).
June 1, 2002... In contrast to hydraulic pumps and fluids, pneumatic systems rely on relatively low-cost air compressors, components, and readily available plant air. And if a pneumatic system should leak, the return of air into the environment carries much...

Power limiting with the millennium pump. (Motion Control).
June 1, 2002... Power limiting (horsepower limiting) is popular in mobile machinery because it prevents lugging of the prime mover. Figure 1 shows the typical pressure-flow characteristics of a conventional pressure compensated pump superimposed with constant...

Fluid power shines -- down on the farm: from a giant 6-row cotton picker to a gentle cow-milking robot, hydraulics and pneumatics take the tedium out of farm chores. (Agriculture).
June 1, 2002... HST drives 3-speed gearbox to move huge cotton picker Cotton farming is big business -- big as in: if you don't have a lot of acreage, you don't survive. And even though cotton seems inanimate to those of us who only know it as clothing, in...

Pneumatic milking robot gives dairy farmers a vacation. (Agriculture).
June 1, 2002... Dairy farming probably is the most labor-intensive agricultural endeavor. Cows have to be milked every day -- three times for optimum production -- year-round. Milking equipment has replaced the manual procedure on most farms, but someone...

All aboard -- hydraulics in marine applications. (Marine Applications).
June 1, 2002... Steering seems like a simple enough task. That is until Aunt Martha asks you to move her behemoth of a 1974 Lincoln Town Car out of the driveway. Take the difference in maneuverability between a compact car and Aunt Martha's, extend it another...

Pump controls enhance performance: squeeze the most performance and efficiency from your variable-displacement pump by matching its control to the application. (Technology Basics).
June 1, 2002... Pressure compensation and load sensing are terms often used to describe pump features that improve the efficiency of pump operation. Sometimes these terms are used interchangeably, a misconception that is cleared up once you understand the...

The road to recovery: Penton Media's design and engineering group publications recently asked companies for their comments on the economic recovery. The following responses are just a few of the many submissions we recieved.
June 1, 2002... How do you see the remainder of 2002? Our projections for the remainder of calendar 2002 are for slow, steady growth. We liken the "Road to Recovery" much like a trip in the family car. Our customers, vendors and employees are all asking,...

Proportional hydraulic valve. (New Products).
June 1, 2002... OBE-D2 proportional valve has ability to integrate all open- and closed-loop functions that hydraulic drive systems require; controls position, force, and speed. Handles flows to 244 gpm at 73-psi pressure drop. Onboard electronics process...

Foot switches. (New Products).
June 1, 2002... Pizzato Elettrica PX and PA Series foot switches are available in single- or double-switch configuration; slow- or snap-action contact elements, with variety of contact blocks; full- or half-covered or uncovered. Can be used as enabling or...

Compact LSHT motor. (New Products).
June 1, 2002... Series 4000 Compact (4K Compact) low-speed/high-torque Geroler-type motor -- with flange-to-endcap dimension of only 202.2 mm -- has continuous torque range from 460 to 939 N-in. Available in six displacements from 160.0 to 490 [cm.sup.3]/rev,...

Valve drive board. (New Products).
June 1, 2002... Model 509 valve drive board was designed for easy installation and calibration for just about any valve on mobile equipment or other extreme environments. Has 19 adjustable parameters, on-board programming interface (no trim pots), and integral...

Particle Counter. (New Products).
June 1, 2002... ARTI On-line Particle Counter Oil measures, stores, and reports on hydraulic-oil condition parameters - without interrupting equipment operation. Compatible with petroleum and phosphate-ester fluids. Eight size channels are programmable via...

Venturi vacuum pumps. (New Products).
June 1, 2002... Mid-Series single-stage vacuum pumps accept interchangeable cartridges that can use different combinations of nozzles and diffusers to fine-tune vacuum level, flow, evacuation time, and air consumption. Vaccon Co. 156

Solenoid valves. (New Products).
June 1, 2002... Series 310 and 410 1/8 in. ported, 3-and 4-way, direct-acting solenoid valves are compact and reliable. Can mount in-line, on subbase, or mixed on manifold. Short-stroke, balanced-poppet design permits rapid cycling, requires no lubricant,...

Hydraulic hose. (New Products).
June 1, 2002... Models 471TC (synthetic Tough Cover) and 471ST (polymeric Super Tough cover) high-impulse hoses can perform at 15 to 35% higher working pressures than standard SAE 100R2 hose. Construction also includes oil-resistant, nitrile-based,...

Solenoid valve. (New Products).
June 1, 2002... Type 330 direct-acting, 2-way solenoid valve has epoxy-encapsulated coil; uses pivoting armature as switching method. Diaphragm separates fluid from coil chamber. Inlet pressure rating: 150 psi. Cycle rate: 1000/mm. Port connections are 1/4-in....

Proportional valves. (New Products).
June 1, 2002... D1FW and D3FW Series high-response proportional directional control valves are direct-solenoid-operated, with electronic spool position feedback and on-board integrated electronics. Feature precise zero-lapped spool-and-sleeve assembly suitable...

NFPA pneumatic cylinders. (New Products).
June 1, 2002... DNA Series double-acting cylinders feature high-strength aluminum barrel and precision-machined aluminum end and head caps that affix directly to extruded, grooved profile (for mounting sensors) with slim collar screws. Burnished piston rod...

Linear-position transducers. (New Products).
June 1, 2002... Fastar Series non-contacting linear-position transducers incorporate one-coil variable-inductance technology to produce high-speed, high-response measurements. Standard linearity is 0.15% (with 0.10% optional). Consist of 3/4-in. diameter...

Peak-pressure recorder. (News Products).
June 1, 2002... Miniature Kipster peak-pressure indicator is practical alternative to electronic instrumentation for fluid and gas systems. Device has pressure-sensitive disk, which permanently and irreversibly deforms in proportion to pressure. By comparing...

Hydraquip purchases Tulsa distributor. (Industry News).
June 1, 2002... Hydraquip Corp., Houston, has purchased the assets of Air and Hydraulic Components of Tulsa. AHC, founded in 1977, is a full-service distributor with offices in Tulsa and Oklahoma City. Jim Blaylock will stay on as manager, while John Marquis...

2002 SAE Standards Database now available. (Industry News).
June 1, 2002... The 2002 edition of the SAE Publications and Standards Database is now available on the Web and in CD-ROM form. The database contains 77,000 abstracts, covering 95 years of SAE's technical papers, ground vehicles and aerospace standards, books,...

BFPDA reports on Electromagnetic Compatibility of systems. (Industry News).
June 1, 2002... The British Fluid Power Distributors Association has released a report, Guidelines to Electromagnetic Compatibility (EMC) of a Multi-Function Hydraulic Power Assembly. The document has a much wider application than just fluid power systems, as...

Total Design Solutions show a success. (Industry News).
June 1, 2002... Professional Trade Shows, a division of Penton Media, Inc. reports that Total Design Solutions Northeast, held in Hartford this past April, came off without a hitch. Exhibitors were pleased with the location, and attendees liked the show, as...

www.atos.com. (Web Wire).
June 1, 2002... The very detailed website for Italian-based Atos contains specs on a wide variety of pumps, cylinders, valves and related electronics. You'll also find training links; order forms for catalogs, CD-ROMs, and posters; an online catalog; technical...

www.iti.de/simulation/sim_asp_e.htm. (Web Wire).
June 1, 2002... This page, part of the German company ITI's site, allows users to download two tutorials -- one on hydraulic cylinders and one on automotive powertrains.

www.fluidpowerjobs.com. (Web Wire).
June 1, 2002... There are a lot of job sites out there, but this one delivers. Run by Bosco-Hubert & Assoc., an executive search firm, it plainly lists the fluid power-related jobs currently offered. What's more, it has some nice information on interviewing...

www.diynet.com. (Web Wire).
June 1, 2002... For all those do-it-yourselfers and Tim Allen wannabes, this site is definitely well worth a visit. Users can find chats, tips, the latest tools (including pneumatic nail guns), and scores of how-to instructions to build almost anything. It is...

www.boschrexroth-us.com. (Web Wire).
June 1, 2002... Here's the relaunched website for Bosch Rexroth. This slick website presents product and corporate info, as well as "solutions" for a number of different market areas. Easy to navigate, it also contains a nifty events calendar, which users can...

www.mayoclinic.com/findinformation/conditioncenters. (Web Wire).
June 1, 2002... The world-famous Mayo Clinic sponsors this particular web page, which contains links to numerous medical conditions: allergies, diabetes, pain management, high blood pressure, and so on. 4 Users will find plenty of information from articles to...

High-pressure components. (Free Literature).
June 1, 2002... Catalog has 18 pages of information on high-pressure components -- valves, filters, fittings, tubing, gauges, pressure transducers, and hand pumps -- designed for critical service applications. Describes corporate capabilities, design of...

Seals. (Free Literature).
June 1, 2002... Product data guide introduces seals made with spin-cast centrifugal molding process. Compares design with conventional injection-molded products, explains advantages and material differences. Notes worldwide locations. Universal Seal, Inc....

Spin-on filters. (Free Literature).
June 1, 2002... Tri-fold brochure BAFs 1201 covers Build-A-Filter family of spin-on filters, which can reduce total installed cost. Explains ease of use, advantages, typical assembly configurations, how to order. Technical information section contains pressure...

Pressure gauges. (Free Literature).
June 1, 2002... Catalog PG-111 explores line of glycerin-filled pressure gauges, suitable for applications involving severe pulsation, vibration, and corrosive atmospheres. Lists features, options, dimensions, standard ranges, options, accessories. Detachable...

Oil maintenance. (Free Literature).
June 1, 2002... Colorful brochure presents three main reasons for consistent oil maintenance: avoid initial damage to components, save money due to longer service intervals, improve machine reliability. Explores products to help maintain clean oil, including:...

Filters. (Free Literature).
June 1, 2002... Very useful Catalog BB-7 presents complete line of filters and filtration products, including sump strainers, tank-mounted strainers, filler-breathers, pressure gauges and isolators, exhaust mufflers, spin-on filters, in-line filters, and...

Dryers. (Free Literature).
June 1, 2002... Brochure LFG-0901 introduces air drying systems that include dryers, separators, aftercoolers, blowers, and compressors. Notes that nonstandard equipment is company's specialty. Sections cover refrigerant dryers, energysaving chiller design,...

Flared seal. (Free Literature).
June 1, 2002... Brochure examines Flaretite seal, which fits any standard JIC/SAE/JIS flare joint, protects against weeping on new and damaged faces. Explains corporate background, product development, key design features; has specifications, ordering...

Water hydraulics. (Free Literature).
June 1, 2002... Bulletin 10080-A presents variety of water hydraulic products suitable for use in marine, mining, pulp and paper, food processing, automotive, other industries. Components include axial-piston pumps, pressure controls, check valves, and...

Hydraulic repair and remanufacturing. (Free Literature).
June 1, 2002... Brochure contains details on company's repair and remanufacturing services for hydraulic equipment -- pumps, motors, cylinders, control valves, rotary manifolds, and hydrostatic transmissions. Describes expertise, shows photos of testing and...

Protective closures. (Free Literature).
June 1, 2002... Catalog gives part descriptions, features, and uses for line of protective closures. Also details custom dip, rubber, and injection molding services. Color-coded page format allows for quick location of desired products. StockCap 211