⚙️ External Spur/Helical Gears (Displacement cc/rev, Volumetric Efficiency 85%-95%, Hydraulic kW)

External Gear Pump Displacement & Power Calculator

Size external precision spur and helical gear metering pumps (Parker / Haight / Roper): calculate theoretical geometric displacement ($D = 2 pi b (R_a^2 - R_d^2)$ cc/rev), calculate volumetric efficiency ($85% ext{ to }95%$) under operating discharge pressures up to 3,000 PSI, determine required electric motor drive kW/BHP, and fluid power margins.

1. Project & Operating Inputs

Pump Displacement (cc / rev e.g. 45.0 cc/rev Hydraulic Pump)

System Operating Pressure (PSIG e.g. 2,200 PSIG Hydraulic Circuit)

Customer Bid Price for Supplied Hydraulic Power Unit (HPU) ($)

Parker Aluminum Gear Pump, 40 HP Motor, Reservoir Tank, Filters ($)

2. Financial Breakdown & Yield

EXTERNAL GEAR PUMPS

Turnkey External Gear Metering Skid Profit

Precision Hydraulic Equipment Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost