resources
formula
Calculating Bearing Requirements for Oil Lubricants: V = A x T V = volume in terms of lube-oil replacement rate in cubic inches per hour (in³/hr) A = bearing surface area in square inches (in²) (sized differently based on bearing type) T…
Pressure, Force and Horsepower Relationships: Pressure (psi) = force (lbs) / area (in²) Force (lbs) = area (in²) x pressure (psi) Area (in²) = force (lbs) / pressure (psi) Fluid Power Horsepower: Fluid Power Horsepower (hp…
Volts (E): Volts = square root of (watts x ohms) Volts = watts / amperes Volts = amperes x ohms Ohms (R): Ohms = volts / amperes Ohms = volts² / watts Ohms = watts / amperes² Watts (W): Watts = volts²…
Electrical Cost = HP x .746 x hours x Kw cost / motor efficiency Example: 50 HP air compressor that runs 8 hours a day 5 days a week for a year with a $.06 Kw electric rate and a 90% efficient electric motor. 50 HP x .746 x 2,080 hours x $.06…
