1. Load and Speed Calculation
Radial Load Formula:
- P=F/d.L
P: Surface pressure (MPa)
F: Radial force (N)
d: Shaft diameter (mm)
L: Bushing length (mm)
Safety margin: Actual PV ≤ 0.7 × Material limit PV
2.Fit tolerance design
Interference amount recommendation (press-fit installation):
Metal-based bushing: Interference amount = (0.001~0.002) × aperture
Plastic bushing: Interference amount ≤ 0.5% (to avoid stress cracking)