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Workshop reference

Engineering Formula Library

Common formulas used across the Imperametric calculator pages.

CalculationFormula
Bolt torqueT = K × F × d
Surface speedVc = π × D × RPM ÷ 1000
Spindle RPMRPM = 1000 × Vc ÷ (π × D)
Feed rateFeed = RPM × flutes × chip load
Mass from volumem = volume × density
Hydraulic forceF = pressure × area
Electrical powerP = V × I
Ohm's lawV = I × R
Beam central deflectionδ = F L³ ÷ (48 E I)
Pump powerP = pressure × flow ÷ efficiency

Reference values are general. Confirm the specification, standard and material required for the actual job.