Research Article
[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·Sn | 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 × 107 | Pressure gradient əp/əx | Pa/m | 4.49 × 109 |
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