High-Pressure Gear Motors KM 3 Housing Gearing Drive shaft end Flange cover Pressure field sealing for axial clearance compensation Sliding plates Rotary shaft lip-type seal Plain bearing Housing seal Drain port Function The construction (design principle) and materials of the KRACHT KM 3 series external gear motors make them perfect for use under the most extreme operating conditions. The main components form the housing and flange cover (see sectional drawing). They are dynamically highly loadable, making them insensitive to pressure peaks and continuous vibrations. Large-surface-dimensioned,...

High-Pressure Gear Motors KM 3 Materials Housing Grey cast iron / Spheroidal cast iron Multi-compound plain bearing bushes Case hardening steel acc. to DIN 17210 surface hardened and ground NBR rotary shaft lip-type seal and PU pressure field seal ϑ ≤ 90°C FKM rotary shaft lip-type seal and PU pressure field seal ϑ ≤ 100 °C Characteristics Mounting Pipe connection Right, left, right and left Mounting position Ambient temperature Working pressure input pmax = 315 bar (see technical data) Leak-oil pressure Working pressure output Media temperature ϑm max = 90 °C NBR rotary shaft lip-type seal and...

High-Pressure Gear Motors KM 3 Calculation formulas for hydraulic pumps and motors Characteristics, formula signs, units 1. Discharge flow/input flow 2. Geom. discharge volume/input volume 3. Pressure 4. Speed 5. Torque 6. Power 7. Total efficiency 8. Volumetric efficiency 9. Hydr./mech. efficiency 10. Flow velocity 11. Piping diameter General Qth = Vg · n, ηtot = ηvol · ηhm M = 9549 · P , v = 21.22 Q n d2 Power Torque VolumeLeistung Moment Volumenstrom tric flow Förderstrom Discharge flow Drive torque Antriebsmoment M1 = Input Power Antriebsleistung Typical values for KM 3 at nominal operating...

High-Pressure Gear Motors KM 3 Technical data KM 3 … 6DL Input volume nominal size Geom. displacement volume Pressure peak Lowest speed Geom. displacement volume Pressure peak Lowest speed KM 3 … 6VL Input volume nominal size

High-Pressure Gear Motors KM 3 Characteristic curves KM 3/63 Characteristic curves for viscosity ν = 34 mm²/s 250 Input flow Q [l/min] Characteristic curves KM 3/71 Characteristic curves for viscosity ν = 34 mm²/s 240 Input flow Q [l/min]

High-Pressure Gear Motors KM 3 Characteristic curves KM 3/82 Characteristic curves for viscosity ν = 34 mm²/s 300 Input flow Q [l/min] Characteristic curves KM 3/100 Characteristic curves for viscosity ν = 34 mm²/s 400 Input flow Q [l/min]

High-Pressure Gear Motors KM 3 Characteristic curves KM 3/112 Characteristic curves for viscosity ν = 34 mm²/s 315 Input flow Q [l/min] Characteristic curves KM 3/125 Characteristic curves for viscosity ν = 34 mm²/s 450 Input flow Q [l/min]

High-Pressure Gear Motors KM 3 6 D L 1 /… Code number special construction Seal 1 NBR rotary shaft lip-type seal ϑ ≤ 90 °C FKM rotary shaft lip-type seal ϑ ≤ 100 °C Shaft and driven shaft pinion made of casehardened steel (ground tooth flanks) Housing and bearing version D Grey cast iron housing with multi-compound plain bearings Spheroidal cast iron with reinforced plain bearings (Internal allocation) Standard design (without) Shaft end / shaft load capacity Y Cylinder shaft Ø 32; 550 Nmmax Splined shaft profile B 28 x 25; DIN 5482; Z = 15; m = 1.75; 450 Nmmax Splined shaft profile W 35 x 2;...

High-Pressure Gear Motors KM 3 Flange mounting SAE-B-2-hole flange S Connections Housing connection J SAE 1 ¼ standard KM 3 … 6DL deep

High-Pressure Gear Motors KM 3 Shaft ends Shaft end B Splined shaft profile W 35 x 2 DIN 5480 ab Vg 82 800 Nmmax Shaft end W Splined shaft profile B 28 x 25 DIN 5482 z = 15, m = 1.75 450 Nmmax Shaft end Q Splined shaft profile SAE-C z = 14 DP 12/24, α = 30° 500 Nmmax Shaft end Y Cylindrical shaft 550 Nmmax Dimensions, Weight drain line Weight [kg] Input volume nominal size 63 71 Design T-flange Design V-flange Design S-flange

Low and high-pressure gear pumps for lubricating oil, hydraulic, process and test bench applications, fuel and metering systems. I Flow Measurement Gear, turbine and screw type flow meters and electronics for volume and flow, metering and consumption in the chemical industry, hydraulic, process and test bench technology. I Hydraulics Single and multistage high-pressure gear pumps, gear motors and valves for construction machinery, municipal vehicles, agricultural vehicles, special vehicles and truck bodies. I Valves Cetop valves for all requirements stationary and mobile applications. Pressure,...