Which lathe feature provides extra support for long workpieces?

Which lathe feature provides extra support for long workpieces?

• A. Center
• B. Chuck
• C. Collet
• D. Faceplate

Answer: (A)

Long workpieces on a lathe need support at the far end to prevent deflection and vibration during turning, and that support comes from a center in the tailstock. A center supports the end of the workpiece while it rotates, helping keep it true as you machine. A live center spins with the workpiece, reducing friction, while a dead center stays stationary. This end support is especially important for long pieces or when turning between centers. In contrast, a chuck grips the piece in the spindle, a collet clamps around the outside, and a faceplate holds the piece by its surface; none of these provide the extra end support that a center offers for long parts.

Long workpieces on a lathe need support at the far end to prevent deflection and vibration during turning, and that support comes from a center in the tailstock. A center supports the end of the workpiece while it rotates, helping keep it true as you machine. A live center spins with the workpiece, reducing friction, while a dead center stays stationary. This end support is especially important for long pieces or when turning between centers. In contrast, a chuck grips the piece in the spindle, a collet clamps around the outside, and a faceplate holds the piece by its surface; none of these provide the extra end support that a center offers for long parts.