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  • Users: eduvillela
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  1. eduvillela

    clearance between shaft and shaft hub

    hello all! Can a high clearance between the shaft and the shaft hub lead to high vibration levels? And does it appear in the espectrum as 1x only ? thank you in advance!
  2. eduvillela

    real pump curve

    Hello All Let's suppose I've got in hands the pump theoretical curve (given by the Euler equation) and the efficiency pump curve. Can I estimate the real pump curve simply by multiplying the theoretical curve by the efficiency at any flow point? Thank you in advance
  3. eduvillela

    shaft material

    Hello! The company I work designs water pumps. The water (usually at 104 ºF) is sealed by a rubber sealing. The problem is that within short amounts of time of running the shaft gets worn by the action of the rubber lips. The shaft material is AISI 304. I think it's not hard enough to...
  4. eduvillela

    rubber seal leakage

    Hello, Here in my company we design and manufacture small pumps, among other equipments. But we're having troubles with the pump sealing. After one year of running, the fluid (usually water - 86°F) starts to leak through the rubber seal. After disassembling the pump to fix the problem, we find...
  5. eduvillela

    leakage through the seal

    Hello, Here in my company we design and manufacture small pumps, among other equipments. But we're having troubles with the pump sealing. After one year of running, the fluid (usually water - 86°F) starts to leak through the rubber seal. After disassembling the pump to fix the problem, we find...

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