Slotted Hub Formulas for English 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	axial force [lb]
	T	torque [lb ft]
	d	shaft diameter [in]
	p	contact pressure in a joint [psi]
	p_A	allowable pressure [psi]
	L	hub length [in]
	υ	clamping factor υ = 0.008 to 0.1 [-]
	k_s	slip safety [-]
	F	force carried by one bolt [lb]
	i	total number of bolts [-]