Design Multistage External Gear Pumps for Dry Sump Systems: Methodology and Application

Table 7

Input and output parameters for tip clearance calculation.

	Description	Value	Unit
Input	Maximum pump speed	4480	rpm
	Stage 1 max. pressure drop	10	bar
	Minimum temperature	−15	C
	Maximum temperature	130	C
	Dynamic visc. ()	6938.9	mPa s
	Dynamic visc. ()	6.71	mPa s
	Tip circle tooth thick.	0.15	mm
	Tip diameter	48.5	mm
	Pressure gear face width	84.0	mm
Output	Nominal tip clearance	0.063	mm
	Power loss ()	0.181	kW
	Power loss ()	1.742	kW