CHIARAVALLI
CLAMPING ELEMENTS
C = 1
MINIMUM HUB DIAMETER
CHECK Dm
After choosing the clamping element type with the required
characteristics it is necessary to make a check on the mini-
mum extern diameter of the hub (Dm), which has to resist to
the solicitations caused by the high pressures developed by
夹紧element. The check is purely static and con-
cerns just solicitations caused by the clamping element:
Dm ≥ D x
C = 0.8
C = 0.6
Rs
0.2 + (Pm x C)
Rs
0.2 - (Pm x C)
Where:
Dm
= Extern diameter of the hub (mm)
D
= Extern diameter of the clamping element (mm)
Rs 0.2
= Yield point for permanent elongation
of 0.2% (N/mm
2
)
Pm
= Specific pressure exercised by the clamping
element on the hub (N/mm
2
)
C
= coefficient of the utilization in function of the
hub profile (Look at the pictures below)
MINIMUM HUB DIAMETER CHECK Dm
L1 = L
L
Dm
L1 = 2L
L
Dm
L1 > 2L
L
Dm
L1 > 2L
L
Dm
L1 = 2L
L
Dm
L1 = L
L
Dm
2