[Retracted] Steady-State Flow Characteristics and End Clearance Optimization of Internal Gear Grease Pump

Table 4

Calculation parameters of power loss of end clearance.

Parameter	Unit	Value
Yield strength,	Pa	283
Consistency coefficient, k	Pa·S^n	43.25
Shear thinning index, n	1	0.48
Root circle radius of internal gear, r1	mm	30.45
Outer circle radius of internal gear, r2	mm	36
Addendum circle radius of internal gear, r6	mm	24.66
Root circle radius of external gear, r3	mm	15.01
Gear shaft radius, r4	mm	12.5
Addendum circle radius of external gear, r5	mm	20.1
Leakage envelope angle of internal gear, φ1	rad	0.732π
Leakage envelope angle of external gear, φ2	rad	0.88π
Variation in pressure, Δp	Pa	2.49 × 10^7
Pressure gradient əp/əx	Pa/m	4.49 × 10^9