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  • Medical Device Link .
    not need maintenance for the first 20,000 hours. An optional soft-start speed control automatically slows the pumps when gas loads are small and increases speed if the pressure starts to rise. 2419 Smallman St., Pittsburgh, PA 15222. High-flow dry vacuum pumps are available in pumping speeds of 3.1...
  • The anatomy of a large hydraulic power system
    Large hydraulic-system basics, shock-absorber lessons, air-hydraulic pumps, and more are included in this hydraulics reference guide. The Lifco power unit, built for an 800-ton upstroking press, uses Denison valves and pumps. The design and construction of a large central hydraulic system involves...
  • MICRO:Product Technology News (July '99)
    ) Compound Molecular Pumps Osaka Vacuum San Jose, CA Designed for low-k dielectric and CVD processes, Mag-Lev compound molecular pumps use optimal hydrogen and argon pumping speeds for rugged operation. Pumps operate from 700 to 3400 L/sec. They accommodate both 200- and 300-mm wafer processes...
  • Compressors
    and pressures to 8 psi. Helical compressors look like two giant screws meshing together; they work much like hydraulic screw pumps. Maximum pressure from these machines is approximately 125 psi in single-stage configurations. Helical compressors may be either oil flooded or dry. Dry helical...
  • PAT Advances Freeze Dryer Control
    technique but "reflectivity and depth are issues," says Oregon Freeze Dry's Pebley. "It's more a surface, than a penetrating technique." "RGA is usually done with mass spec analysis, to see vapor in the chamber," adds Joe Brower, director of Operations at Cardinal Health in Raleigh, N.C. However...
  • Frosty reception for unprepared robots
    . Plastic enclosures can become brittle in extreme cold and thus susceptible to breakage. Kuka also advises use of vacuum actuators for end-of-arm tools. Compressed air is expensive to dry and can cause condensation and water crystals that foul lines, actuators and valves. Positive-displacement...
  • MICRO:Archive:Back Issue TOC
    low-k material integration through low-ion plasma dry strip processes Improving work-in-progress visibility with active product tags Using bitmap analysis to help identify yield-critical issues in the fab Using laser-based patterned-wafer inspection for. MICRO:Archive:Back Issue TOC. MICRO Advertiser...
  • MICRO:Product Technology News (April '99)
    on hands, elbows, face, knees, and legs to soothe dry, irritated skin. The lotion is static, nongreasy, and hypoallergenic. Cleanroom Robots Motoman West Carrollton,OH The SK6CR six-axis robot has a 13.2-lb payload capacity, a 52.2-in. reach, and repeatability of +-0.004 in. A short-arm model has...
  • MICRO: Product Tech News
    lens. Dry Vacuum Pump. Pfeiffer Vacuum. Nashua, NH. A low-cost, positive-displacement dry pump features a simple piston-style design, which does not expose the bearings to high-vacuum conditions. The XtraDry pump provides a hydrocarbon-free vacuum and does not generate particles that can contaminate...
  • Controls help harmonic spray do OK removing residues
    frequency ac drives to control pumps bringing water into the machine. Allen-Bradley 1398 Ultra 100 and 200 servodrives and motors rotate 25 silicon wafers in the clean and spin-dry modules. AllenBradley photoelectric sensors note wafer position and communicate this information via DeviceNet...

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