Slotted Hub Formulas for Metric Calculation

Contact pressure

Minimum hub length

Recommended values: L = (0.6 - 3) d

Force carried by one bolt

Strength check

p ≤ p A

where:

	F_a	acting axial force [N]
	T	torque [Nm]
	d	shaft diameter [mm]
	p	contact pressure in a joint [MPa]
	p_A	allowable pressure [MPa]
	L	hub length [mm]
	υ	clamping factor υ = 0.008 to 0.1 [-]
	k_s	slip safety [-]
	F	force carried by one bolt [N].
	i	total number of bolts [-].