Pump Noise Calculator

Estimate hydraulic pump noise levels from pressure ripple, speed, and displacement.

Input Parameters

Results

--
Noise Level
dB(A)
--
Pressure Ripple
%
--
Structure-Borne
dB
--
Fluid-Borne
dB
Note: Piston pumps are quietest per unit of power. Noise doubles perception every +10 dB. OSHA limit: 85 dB(A) for 8 hrs.

Reference

Noise = Base_dB + 10×log10(P/1000) + 10×log10(Q/5) + 10×log10(RPM/1500) Base dB: Gear=78, Vane=72, Piston=70 Structure-borne ≈ Total - 3 dB Fluid-borne ≈ Total - 6 dB