cummins engine oil pump , Iran

The Cummins engine oil pump is manufactured as an internal gear type (Gerotor) with an inner and outer rotor. The rotor material is powder metallurgy steel with a density of 7.4 grams per cubic centimeter. The number of teeth on the inner rotor in the 6BT model equals 7 and on the outer rotor equals 8 teeth. The outer diameter of the complete rotor assembly in this model is 65 millimeters and the thickness is 20 millimeters. The radial clearance at the tooth tips (tip clearance) in the original sample is set between 0.08 and 0.12 millimeters. The axial clearance between the rotor and pump housing (end play) is 0.04 to 0.08 millimeters. The oil displacement volume per pump revolution in the 6BT model equals 22 cubic centimeters. The KTA19 model features a larger rotor with a diameter of 95 millimeters and a thickness of 32 millimeters. The displacement volume in the KTA19 reaches 65 cubic centimeters per revolution. The pump housing is cast from grey cast iron GCI-250 with a pressure tolerance of 14 bar.

The Cummins oil pump supplies oil pressure of 2.5 to 5.5 bar at rated engine speed. The volumetric flow rate in the 6BT model at 2500 RPM equals 65 liters per minute. The QSL9 model has a flow rate of 110 liters per minute and the KTA19 model has a flow rate of 180 liters per minute. A pressure relief valve is installed at the pump outlet to regulate maximum pressure. The set pressure of this valve in the 6BT model equals 5.0 bar and in the KTA19 equals 6.5 bar. The rotor clearance tolerance in the original sample is 0.02 millimeters and reaches 0.12 millimeters after 10,000 hours. The volumetric efficiency of a new pump is 92 percent and decreases to 75 percent at end of life. The minimum allowable pressure at idle speed (700 RPM) for the 6BT is 1.0 bar. A pressure drop below 0.7 bar at idle is considered a serious warning to stop the engine. The pump drive gear is manufactured from hardened steel with 25 teeth and a module of 2.5 millimeters.You can order and buy cummins engine oil pump from Iran by contacting us through whatsaap and email.
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