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March 2011

Hydraulics & Pnuematics March 2011 Issue

Features

  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    Hydraulics goes off spring brakes

    Hydrostatic transmissions are widely used to drive and decelerate just about every type of mobile equipment. But when a machine is at rest, any of several spring-applied brakes can be used to ensure that the machine remains at rest....More
  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    Pneumatics moves hard-to-handle foods

    Air-operated piston pumps put the squeeze on viscous liquids....More
  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    13's a lucky number

    Industrial, motion, drive and automation exhibits top the list at this year’s Hannover Fair....More

Ideas & Applications

  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    How to get the big guys started

    Starting an engine with a displacement of 5000 cu-in. requires the high power density, durability, and reliability of hydraulics....More
  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    Meeting demands in die casting

    It’s hard to beat die casting for spitting out metal components rapidly and with consistent quality. The challenge comes in achieving both simultaneously. For machines powered by hydraulics, this requires precise control of speed and position for high ......More
  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    Increase return flow from cylinders

    A PO check valve provides a second flow path to speed up retraction of cylinders having a large OD rod. Large-bore cylinders, with relatively large rods for handling large compressive loads, frequently are hampered by inadequate conductor or ......More

Motion Control

  • Mar. 10, 2011
    article
    Hydraulics & Pneumatics

    Digital resolution of rotational transducers, part 4

    By Jack L. Johnson, P.E. Editor's note: This is the fourth installment in a seven-part series on digital resolution and other subjects. Read the rest now: Part 1, Part 2, Part 3, Part 5, Part 6, and Part 7. A variety of issues is associated with the ......More

Tech Pneus

Products

  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Heat-resistant seals

    UH05 / U641 hydraulic seals with heat-resistant urethane material are designed for cylinder sealing and operate in extreme temperature ranges for long service life under severe and extended operation (e.g., construction equipment). UHO5 seals are ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Cylinder wear-rings

    Manufactured from a blend of premium nylon, glass fiber, and PTFE, Powerbands offer a high strength wear-ring for cylinder applications, including those with minimal lubrication. They are fully machined with cross-section tolerances of only ±0.001 ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    PEEK seals

    Seals made of PEEK (polyetheretherketone) with custom joints handle thermal expansion forces in hydraulic and pneumatic applications. They provide long operating life with chemical resistance and high retention of mechanical properties up to 570 F. ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Food-grade lubricant

    Omnilube family of food-grade synthetic oils and greases for incidental food contact are designed for long life. They are available for compressor, hydraulic, and other equipment. They meet USDA and FDA H-1, 21 CFR 178.3570, and conform to NSF and ......More
  • Nov. 15, 2011
    article
    Hydraulics & Pneumatics

    Planetary gear reducers

    YMPG series speed reducers come in torque ratings from 1500 to 500,000 N-m; most have four planet gears surrounding a sun gear. Modular system permits combining subassemblies. Configurations include in-line male or female spline output, ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Oil-over-air valves

    Hydraulic-over-air relay valves convert hydraulic modulated input pressure to proportional output air pressure in on- and off-highway applications. A common use would be to control an air-braked trailer with a hydraulically braked towing vehicle that ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Digital hydraulic tester

    HFP-110/120 digital hydraulic tester is a compact, lightweight, self-contained, and portable unit with laboratory accuracy. Designed for fast diagnostic troubleshooting of all types of mobile or stationary hydraulic systems and components, it makes ......More
  • Nov. 15, 2011
    article
    Hydraulics & Pneumatics

    Pressure transducer

    A-10 industrial pressure transmitter withstands harsh operating conditions, such as shock and heavy vibration. It resists mechanical damage and eliminates stress on the pins of its piezo-sensor. It is rated for measuring vacuum to pressure ranging ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Air hose and tubing

    Nitra pneumatic hose and tubing comes in new styles, including bonded polyurethane tubing, which is available in 532 to 12-in. and 4 to 12-mm sizes in 50-ft lengths. Polyurethane coiled tubing comes in single, double, and triple bonded configurations ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Seal flange adapters

    Dual seal flange adapters improve the reliability and safety of high-vibration, high-shock hydraulic four-bolt connections in critical subsea oil and gas applications. They are an alternative to traditional SAE Code 62 flanges. They are available in ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Food-grade suction cup

    SPG 33 SI-45 “candy suction cup” is bell shaped and made of food grade silicone for handling chocolate and other soft materials without damaging their surface. It is capable of handling various shapes, textures, and surfaces that may not yet be fully ......More
  • Mar. 11, 2011
    article
    Hydraulics & Pneumatics

    Air hose cutters

    TC-1 chrome-plated metal tube and hose cutters make square cuts quickly and easily. The V-shaped head ensures straight cuts and prevents jagged edges. They cut many types of plastic tubing and hose up to about 1 in. OD. Blade indexes provide two ......More
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