Hydraulics & Pneumatics articles from January 2002

Hydraulics & Pneumatics archives from January 2002

More than just Window Dressing. (Editor's Page).
January 1, 2002... I hope you have noticed by now that Hydraulics & Pneumatics has a new, more contemporary look. The redesign has been a lot of work, but, more importantly, we've also tweaked the content to make it easier to find information of interest. ...

Rotary flow divider adds regeneration to HST. (Ideas & Applications).
January 1, 2002... Hydraulic system designers are continually looking for ways to obtain broader ranges of speed and torque from a hydrostatic drive with a given pump, motors, and prime mover. The existing successful schemes can be summarized as: * using a...

Actuators convert rotary motion into linear motion. (Ideas & Applications).
January 1, 2002... Roh'lix linear actuators from Zero-Max, Plymouth, Minn., convert rotary motion to linear travel and carry loads thrust loads to 200 lb at speeds up to 70 in./sec -- depending on size. The unit's thrust capacity is adjustable so that the system...

Calorimetric sensor responds to air flow. (Ideas & Applications).
January 1, 2002... The vent-captor -- a product from weber Sensors Inc., Woodstock, Ga. -- measures the velocity of air or gaseous media, using a calorimetric principle that the company pioneered. The vent-captor, with no moving parts, can measure flow velocities...

Enlighten sensors and actuators with CAN. (Ideas & Applications).
January 1, 2002... The computerized world in which we live tends to distribute and decentralize. This is not only true for the Internet, where many of the hottest applications during 2001 were based on distributed systems, but also is true for embedded and...

Simulator tests control system. (Ideas & Applications).
January 1, 2002... With the RMC-SS servo-system simulator from Delta Computer Systems, designers can conduct initial precision testing of control systems -- even though actual hydraulic or mechanical systems are not yet in place, the machinery is not yet...

Interface web-enables new and existing products. (Ideas & Applications).
January 1, 2002... In a world that is increasingly driven by net-work connectivity, an emerging trend in industrial controls involves arrangements that allow equipment to be monitored and supervised remotely via an internet connection. Z-World's DeviceMate...

Hydromechanical aspects of the millennium pump. (Motion Control).
January 1, 2002... As described in previous issues, the millennium pump was constructed as a basic hydromechanical energy conversion kernel surrounded by an extensive set of electronic controls. It was a simple kemel that now needs more detail. One of the aims of...

[C.sub.V] -- an essential design and diagnostic tool. (Pneumatic Systems).
January 1, 2002... Every pneumatic device possesses a specific conductance identified as [C.sub.v]. Because [C.sub.v] is perceived as a complex expression, many designers avoid learning about it and, hence, become ignorant of its importance and proper...

Rotary seals. (Innovations).
January 1, 2002... Family of high-performance rotary seals suits applications such as hydraulic motors, crankshaft seals, vacuum pumps, gearboxes, and compressors. Low-friction PTFE compound bonded to rubber seal lip provides flexiblity under changing operating...

Reservoir compensators. (Innovations).
January 1, 2002... Inflatable compensators deal with variations in fluid volume due to heat or operational state; avoid tubulence and condensation, reduce contamination. Envelopes are heavy-duty, synthetic-fiber fabric, coated and vulcanized on both sides with...

Power units. (Innovations).
January 1, 2002... Vickers System-Pak power units have 3000-psi vane or piston pumps driven by TEFC continuous-duty electric motors via elastomer coupling. Units have straight-thread porting, spin-on return filters, D03 bar-stock manifold. Other features: 3- to...

Leak-Detection instrument. (Innovations).
January 1, 2002... Sentinel C-20 pressure-decay leak-detection instrument measures just 7 7/8 X 5 1/2 X 3 1/2 in., features automatic calibration by internal leak orifice. Includes 6-button keypad and 40-character display.

Compact power units. (Innovations).
January 1, 2002... Stone Hydraulic Micro-Pack MP90 Series power units are designed to fit into limited space -- as small as 3.6 X 5.5 in. Gear pumps deliver pressures to 3000 psi, flows to 1.6 gpm. (Manual pumps also are available.) Polyethylene reservoirs range...

Rotary timing valve. (Innovations).
January 1, 2002... Valve can have multiple supply ports and individual circuits for 4 to 25 stations. Suitable for pressures to 3000 psi, speeds as high as 100 rpm. Design has no pressure seals -- for reliability and extended service life.

Axial-piston pump. (Innovations).
January 1, 2002... Patented APIS PV 3K-10 pump has cylinder barrel, pistons, slipper retainer, and pressure plate manufactured with bi-metal casting process; parts have mechanical load-bearing properties of steel plus low-friction characteristics of Tocat lead...

Rotary unions. (Innovations).
January 1, 2002... RU-Series rotary unions in single-, double-, 4-, and 6-passage versions are rated for 7000 psi. Internal ball bearings and low-drag seals reduce starting torque requirement, thus enabling high rotational speeds (about 100 rpm). Unions have SAE...

Pneumatic fittings. (Innovations).
January 1, 2002... Compact fittings have ODs 20% smaller than standard types. Rated for 150 psi; operating temperature range from 32[degrees] to 140[degrees] F. Metric versions for 3-, 4-, and 6-mm tube diameters, with M3, M5, M6, or 1/8 RPT threads. Inch...

Pressure sensor. (Innovations).
January 1, 2002... Programmable piezoresistive sensor has 4-digit, 7-segment display that provides continuous pressure data -- in psi or bars. Monitors pressures to 5800 psi; runs on 10-to 30-V DC. Dual set points and hysteresis are programmable; switch point...

Foot-operated valves. (Innovations).
January 1, 2002... Five series of foot-operated valves come in wide variety of configurations: 2-, 3-, and 4-way, 2- and 3-way proportional, double 3-way, and 4-way momentary or maintained contact. Rated for millions of cycles for flow to 30 cfm, pressure to 150...

Hydraulic power units. (Innovations).
January 1, 2002... Models HE 2000 AC and DC power units offer wide range of standard and pressure-balanced pumps, motors, switches, mounting surfaces, steel or plastic reservoirs, and bolt-on manifolds with integrated valves, which allow for most commonly used...

Motorized flow controls. (Innovations).
January 1, 2002... SFP25370 package includes pair of motorized flow-control valves and priority divider-type compensation elements; provides electrical remote control of two hydraulic functions. Accommodates either 10 or -16 size valves for system flows to 50...

Compact hydraulic cylinders. (Innovations).
January 1, 2002... EM and EP Series cylinders with electronic sensing are compact, offer high-precision control, bore sizes from 1 through 8 in., piston rod diameters from 5/8 through 5 1/2 in. Pressure ratings extend to 3000 psi.

Cartridge valves. (Innovations).
January 1, 2002... PowrFlow line of valves fits standard cavities, is rated for continuous full flow at 5000 psi. Port sizes: SAE 10, 12, and 16. Oversize seating surface accepts high-torque tightening during installation, eliminating need for lock mechanisms or...

Tube benders. (Innovations).
January 1, 2002... Numerically controlled rotary-draw tube benders for low-volume production offer 3-axis part operation. Model RD19 has 3/4-in. capacity; Model RD35, 1 3/8-in. Additional features: powered bend head, plane-of-bend changer. Mandrel extractor is...

Electronic regulators. (Innovations).
January 1, 2002... Series P3P-R electronic regulators provide precise control of pneumatic pressure from remote location via 4- to 20-mA or 0- to 10-V signals. Ports sized from 1/8- to 1/2 in.

Pneumatic valves. (Innovations).
January 1, 2002... Pneumatic closed-loop proportional valves feature on-board electronics, are 5/3 closed-center directional control type. Pneumatic control element consists of spool/sleeve assembly with metallic sealing. Position transducer connected to armature...

Radial-Piston motor. (Innovations).
January 1, 2002... Heavy-duty ML06 motor -- designed for use on skid-steer loaders with capacities from 1700 to 2600 lb -- has 38.4-in. (3) displacement and is rated at 5800 psi, while delivering 330-rpm speed. Two-speed feature (with patented Soft-Shift)...

Proportional valves. (Innovations).
January 1, 2002... SP Series screw-in cartridge valves, in 3-position, 4-way, spool solenoid types, provide proportional speed and directional control of cylinders and motors. Flow capacity: 3 gpm (08 size) and 6 gpm (10 size) -- both rated 3500 psi....

Piston/bearing/seal. (Innovations).
January 1, 2002... Integrated Piston for hydraulic cylinders combines piston, injection-molded bearing, and seal in self-contained package that simplifies assembly, resists drift and side loading. Standard piston is machined from cold-drawn carbon steel (other...

Digital pressure gage. (Innovations).
January 1, 2002... Merigauge has 4 1/2-digit, 0.6-in. high display; 0.25% accuracy. Pressure range: 0 to 6000 psi; liquid or gas service. Shows pressure in real time numerically, maximum and minimum concurrently as bar graphs. Variety of mountings, 24-V DC power,...

Indexing actuator. (Innovations).
January 1, 2002... Indexing rotary actuator drives shaft in accurate steps in one direction, each to hard stop, with no accumulated error. Uses overrunning clutches to allow drive and reset; ratchet and pawl define angular steps. Will index over angles from...

On-Line particle counter. (Innovations).
January 1, 2002... Measuring unit detects, records solid particles in hydraulic fluids or lubricating oils by continuous monitoring process. Results are displayed, printed according to ISO 4406 or NAS 1638 standards. Measured data is stored, can be transferred to...

Rod-End bearings. (Innovations).
January 1, 2002... Corrosion-resistant Minimatic spherical rod-end bearings for stainless-steel cylinders screw onto end of rod; allow cylinder to operate when mating hardware is slightly misaligned. Body is carbon steel, ball is case-hardened carbon steel; both...

Power units. (Innovations).
January 1, 2002... Chief power units -- custom-configured to buyer's specifications -- are available with AC or DC drives to generate flows from 1/2 to 5 gpm, pressures to 5000 psi. Reservoir sizes range from 3 qt to 14 gal. Valve options: manual and...

Pneumatic mufflers. (Innovations).
January 1, 2002... Muffler housings are molded from nylon 6,6 and fiberglass for high strength and abrasion resistance; material withstands temperatures to 240[degrees] F. Replaceable inserts are constructed of porous composite (for low backpressure) or acoustic...

Water sensor. (Innovations).
January 1, 2002... Water-sensing instrument can be installed in fluid lines or reservoirs. LED display indicates fluid temperature as well as percentage of saturation; flashes at 90% and higher. Electrical circuit includes output relay that can trigger alarm.

Low-Friction seals. (Innovations).
January 1, 2002... CoolPac low-friction rod and piston seals for hydraulic and pneumatic cylinders are cast from liquid polyurethane containing a low-friction additive for high abrasion resistance. Result is long seal life, lower demand for lubricant in air...

Differential-Pressure gages. (Innovations).
January 1, 2002... Line of highly accurate differential-pressure gages covers wide range of scales in English, metric units. Materials of construction include aluminum alloys, stainless steel, brass. Integral switches are optional.

Portable indicator. (Innovations).
January 1, 2002... Model DP1705 pressure indicator measures differential, gage, and absolute pressure with combined -- linearity, hysteresis, repeatability -- full-scale error of [+ or -]0.1%. Indicates pressures to 10,000 psi at temperatures from 0[degrees] to...

Directional control valves. (Innovations).
January 1, 2002... Designed for manifold mounting (individually or with connector blocks), hydraulic valves incorporate spring-loaded balls as sealing elements for zero leakage. Available in 2/2 and 3/2 configurations for operating pressures to 10,000 psi....

Motor-Pumps. (Innovations).
January 1, 2002... DC motor/gear pump packages are designed for mobile hydraulic applications, such as electric manlifts and articulating boom lifts. The units combine permanent magnet DC motors with pressure-balanced gear pumps to provide output flows to 9 gpm...

Piston pumps. (Innovations).
January 1, 2002... Model NT10 hydrostatic closed-loop piston pumps come in 14-cc, 19-cc displacements, rated for continuous pressures of 210 bar, peak pressure of 250 bar. Feature integral charge pump, relief valves, servo control. Single or tandem configuration...

Fittings take the pressure to boost performance. (High Pressure Systems).
January 1, 2002... To the uninformed, high-pressure hydraulics systems -- those rated for operation above 3000 psi -- might seem to simply use components with higher strength than their conventional counterparts. True, high-pressure components do require higher...

German fluid power conference reaches out: Established, successful congress on fluid technology plans its first all-English program for this Spring. (Conference Preview).
January 1, 2002... This March, the 3rd International Fluid Power Conference will take place at the Eurogress in Aachen, Germany. While there are many regional conferences in the United States, Europe, and Asia, this is shaping up to be a major international...

Pressure transmitter. (New Products).
January 1, 2002... Economical CE-listed PSI-5000 transmitter offers ranges from vacuum to 10,000 psi (gage or absolute), all-stainless-steel construction, high burst pressure, light weight (3 oz), accuracy to [+ or -]0.25% FS. Features hybrid compensation unit,...

Rotary actuator. (New Products).
January 1, 2002... Model RR-76 rotary actuator -- for pneumatic or hydraulic applications -- has bearing-supported flange that can carry payloads up to 200 lb. Zero backlash, pre-loaded ball bearings and slip-fit dowel pins add to precision and repeatability....

Rod-Lock device. (New Products).
January 1, 2002... Pneumatically controlled Series RI rod-clamping device produces mechanical holding force between 120 and 1800 lb from space efficient design. Can be used with pneumatic actuators and in non-actuator applications. Works with five metric rod...

Polyethylene tubing. (New Products).
January 1, 2002... Lightweight Zelite low-density polyethylene tubing for pneumatic lines withstands repeated flexing exhibits inertness, has good dielectric properties, forms barrier to gases, vapors, moisture. Semi-rigid, non-toxic material mates well with...

Directional valves. (New Products).
January 1, 2002... Seated valves use spring-loaded elements for zero-leakage sealing. Available in 2/2-, 3/2-, 3/3-, and 4/3-way configurations rated to 10,000-psi pressure. Actuation choices: electrical, mechanical, hydraulic, pneumatic, manual. May be...

Sensor array. (New Products).
January 1, 2002... Series F620OA/F220A Activa sensor array accepts threaded flow, pressure, and temperature sensors to simultaneously measure those parameters in hydraulic systems and components -- from single hydraulic line break. Output signals can be...

Valve stacking system. (New Products).
January 1, 2002... PVLC1O Valvetronic system of stackable single- and double-solenoid valve modules with internal electronic interconnections allow custom valve arrangements using standard components. (These larger modules complement existing PVL systems.) As...

Servovalve. (New Products).
January 1, 2002... High Flow single-stage servovalves are designed to serve closed-loop applications with flows to 45 gpm. Integrated electronics monitor spool position, reduce hysteresis to

Pressure transducers. (New Products).
January 1, 2002... Intrinsically safe transducers and transmitters for hazardous locations include Series 443 5-V transducer, Series 445 4- to 20-ma transmitter, and Series 446 10-V transducer. All offer EMI, ESD, and RFI protection. Pressure ranges from 0 to 15...

Air compressors. (New Products).
January 1, 2002... Designed for plants with large fluctuations in air demand, Model VS240 eXactRPM variable-speed, rotary-screw air compressor will operate continuously at full load (240 cfm) or deliver as little as 43 cfm. Has small footprint and easy-to-reach...

Dryer upgrade kit. (New Products).
January 1, 2002... Blower-purge upgrade kits convert heatless desiccant compressed-air dryers into externally heated regeneration dryers, thereby freeing more air for use downstream. Company's technicians can provide installation.

Pneumatic valve. (New Products).
January 1, 2002... Inexpensive 4-way solenoid valve saves space without sacrificing performance. Balanced-spool design in 5/2 configuration produces 0.4 CV; handles pressures to 150 psi or vacuum with external pilot supply. Porting: 1/8-in. NPT. Built-in...

Air-Preparation units. (New Products).
January 1, 2002... Olympian Plus 68 Series of air-preparation units includes general-purpose and coalescing filters, oil-vapor removal filters, pressure regulators, filter/regulators, lubricators, pressure-relief valve, soft-start/dump valves, shut off valves,...

Push-In protective plugs. (New Products).
January 1, 2002... Convenient, reusable Series PIP push-in plugs protect SAE and NPT threads. (Series PIP-Tab has side tab for easier removal.) Material is tough, flexible, low-density polyethylene -- imperious to most chemicals and solvents; resists impact and...

Stainless-Steel bar. (New Products).
January 1, 2002... Stainless-steel product line shipped from stock includes 300 Series, Type 416, and Type 630 (17-4) round bar; cold-drawn hexagon and square bar; as well as hot-rolled products in flats and angles.

Pressure transducer. (New Products).
January 1, 2002... Lightweight, compact 100 Series transducers handle extreme environments. Available in pressure ranges from 0 to 15 psi through 0 to 10,000 psi. Full-scale combined error -- including linearity, hysteresis, and repeatability -- is better than [+...

Tube supports. (New Products).
January 1, 2002... Four types of tube supports for tubing, piping, and hose -- up to 1 in. (25 mm) OD -- are available in variety of materials. Simple, economical P clamps install easily on wall or equipment frame Tube-support strip organizes multiple tube or...

Gage with switch. (New Products).
January 1, 2002... Model 120 pressure gage -- with one or two integral switches in SPST or SPDT configurations -- comes with aluminum or 316 stainless-steel pressure-containing components, wide variety of elastomers to accommodate hositle environments. Working...

Inductive sensor. (New Products).
January 1, 2002... Self-contained Long Ranger inductive sensor has 1-mm range; measures only 3-mm diameter 3 27-mm long. Operates on 10- to 30-V DC; has reverse-polarity protection and status LED. PNP and NPN outputs available. Requires no external amplifier....

Gems Sensors acquires Setra Systems. (Industry News).
January 1, 2002... Gems Sensors, Inc., Plainville, Conn., has announced its acquisition of Setra Systems, Inc., of Boxborough, Mass., a designer and manufacturer of capacitance pressure transducers and related devices. Setra's manufacturing and service operations...

Lubrication Institute announces certification. (Industry News).
January 1, 2002... The Lubrication Institute, LLC, is holding several three-day Certified Lubricants and Lubrication Analyst Courses at their headquarters in Overland Park, Kans. Course fee is $985, with a $125 fee for certification. Dates for 2002 are: March...

Canadian utility/engineering trade show renamed for 2002. (Industry News).
January 1, 2002... The Canadian Utilities Equipment & Engineering Show, formerly the MEA Utility Equipment Show, will be held May 14-15, 2002, at the International Centre in Toronto. Over 100 exhibitors are expected. For more details, or to register for the show

Trombetta and camdec complete merger. (Industry News).
January 1, 2002... Trombetta Motion Technologies, Menomonee Falls, Wis., has completed its merger with Camdec Corp., Germantown, Wis., a manufacturer of DC contactor solenoid switches. All operations are now fully integrated into a single location in Menomonee...

People.
January 1, 2002... Schroeder Industries, McKees Rocks, Pa,, has announced the promotion of Theodore H. Kijanka as president, following the unexpected death of Augustus Oliver Schroeder, who had been the company's president since 1988. Kijanka has been with...

Accumulators. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Accumulators Fluid Petroleum base Synthetic Water Accumulators, Inc. * * * Air-Dro...

Actuators, rotary. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Actuators, rotary Service Hydraulic Petroleum Pneumatic base ...

Air logic devices. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Air logic devices Type Principle of operation MPL Fluidic Spool Poppet Air...

Clutches & brakes. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Clutches & brakes Engaging element Cluch Brake Combination Mechanical Auburn Gear...

www.kokogiak.com/megapenny. (Web Wire).
January 1, 2002... Sometimes, when visiting a site, you leave with the feeling, "why did anyone bother to do that?" This site, the Megapenny Project, may bring about that thought in some, but others may appreciate its attempt to explain the concept of large...

Compressors, vacuum pumps & blowers. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Compressors, vacuum pumps & blowers Function Compressor Mechanical vacuum pump Air-Vac Engineering Co., Inc. Anver Corp. ...

Couplings, quick connect, hydraulic. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Couplings, quick connect, hydraulic Fluid Type Petroleum Single base Synthetic Water shut-off ...

Couplings, quick connect, pneumatic. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Couplings, quick connect, pneumatic Type Single Double Straight shut-off shut-off through ...

Cylinders. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Cylinders Service Hydraulic Pneumatic Petroleum base Synthetic ACE Hydraulics *...

Dryers. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Dryers Dellquescent desiccant Drying medium ...

End effectors & cylinder slides. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... End effectors & cylinder slides End effectors Grippers Angular jaw Parallel Jaw Radial AGI...

Filters, air line. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Filters, air line Type Bowl Canister Coalescing Adsens Technology, Inc. AlRman, Inc. * Airtec...

www.webpal.org/list.htm. (Web Wire).
January 1, 2002... Holy cold war, Batman! Here is a creepy site that contains state maps showing nuclear targets, based on a 1990 FEMA report. However, the additional information provided on survival groups may be creepier still.

Filters, hydraulic. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Filters, hydraulic Fluid Petroleum base Synthetic Arrow Pneumatics, Inc. * * ASL Technologies, LLC * ...

Fittings, tube & port, hydraulic. (46th Annual Designer's Guide to Fluid Power Products).
January 1, 2002... Fittings, tube & port, hydraulic Use Industrial Aerospace ACE Hydraulics * ADACONN...