Recommended values:

d = (0.2 - 0.3) D

D 1 = (1.5 - 2) D - for steel and cast steel

D 1 = 2.5 D - for gray cast iron

Active Pin Length

The pin active length l f is a length reduced by chamfering and filleting. The active length usually carries loading.

Formulas in metric units

Bending stress

Pressure in rod

Pressure in clevis

Shear stress

where:

	F	force [N]
	σ 0	bending stress [MPa]
	σ 0D	allowable bending stress [MPa]
	M 0	bending moment [N mm]
	W 0	bending section modulus [mm 3 ]
	τ	shear stress [MPa]
	τ D	allowable shear stress [MPa]
	d	pin diameter [mm]
	p 1	pressure in rod [MPa]
	p 2	pressure in clevis [MPa]
	p 1D	allowable pressure in rod [MPa]
	p 2D	allowable pressure in clevis [MPa]
	b	rod width [mm]
	a	clevis arm width [mm]
	D	shaft diameter [mm]

Formulas in English units

Bending stress

Pressure in rod

Pressure in clevis

Shear stress

where:

	F	force [lb]
	σ 0	bending stress [psi]
	σ 0D	allowable bending stress [psi]
	M 0	bending moment [ln ft]
	W 0	bending section modulus [in 3 ]
	τ	shear stress [psi]
	τ D	allowable shear stress [psi]
	d	pin diameter [in]
	p 1	pressure in rod [psi]
	p 2	pressure in clevis [psi]
	p 1D	allowable pressure in rod [psi]
	p 2D	allowable pressure in clevis [psi]
	b	rod width [in]
	a	clevis arm width [in]
	D	shaft diameter [in]