Allowable Shaft Torsion Stresses in Pin Joints

Material of HB Hardness and R m Strength [MPa]

Type of Torsion Load

Values of Allowable Stresses τ At [MPa]

145< HB< 250

constant

40

500< Rm< 850

repeating

28

-

alternating

20

250< HB< 350

constant

56

850< Rm< 1200

repeating

40

-

alternating

28

HB> 350

constant

80

Rm> 1200

repeating

56

-

alternating

40