Allowable Torque of a Solid Shaft
Mediumtorsionallowable torque
A solid 50-mm-diameter shaft has an allowable shear stress of 60 MPa. Its allowable torque is most nearly:
- A0.74 kN·m
- B1.47 kN·m
- C2.95 kN·m
- D5.89 kN·m
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Answer: B. 1.47 kN·m
T = τπd³/16 = 60 × 10⁶ × π × 0.050³/16 = 1473 N·m ≈ 1.47 kN·m. Using 32 in the denominator halves the answer to 0.74 kN·m.
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