11/ Parker Hannifin Corporationģ Content Content Page -8- General information.4 F11 cross section.4 F12 cross sections.5 Specifications.6 Ordering codes F11-CETOP. 1 Hydraulic Motor Fixed Displacement aerospace climate control electromechanical filtration fluid & gas handling hydraulics pneumatics process control sealing & shieldingĢ Basic formulas for hydraulic motors Flow (q) D x n q = 1000 x η v Torque (M) M = D x p x η hm 63 Power (P) q x p x η P = t 600 D - displacement n - shaft speed η v - volumetric efficiency p - differential pressure (between inlet and outlet) η hm - mechanical efficiency η t - overall efficiency (η t = η v x η hm ) Conversion factors 1 kg lb 1 N lbf 1 Nm lbf ft 1 bar psi 1 l US gallon 1 cm cu in 1 mm in 9 / 5 C F 1 kw hp Catalogue HY /UK.
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