Correct option is C
A pilot in a reamer is a guiding section that helps in maintaining alignment and concentricity while reaming a hole. It ensures that the reamed hole remains perfectly aligned with the pre-existing hole, improving accuracy and surface finish.
The pilot is commonly found in hand reamers, adjustable reamers, and some machine reamers, particularly when reaming deep or already partially machined holes. It helps prevent misalignment and ensures that the reamer follows the existing hole axis.
Key Functions of a Pilot in a Reamer:
· Maintains concentricity and prevents hole misalignment.
· Provides better guidance during reaming.
· Ensures uniform material removal, improving hole accuracy.
· Used in precision machining applications such as engine cylinder reaming and aerospace component manufacturing.
