Drill and reamer each play different roles, are using cutting edge were drilling; bottom hole drill bit, reaming drill the bottom hole drill bit to be expanded. Reamer is the use of the side cutting edge, the drill bit out of the dimensional accuracy is not high, the hole wall finish is not high hole cut through the reamer cutter, make hole accuracy, finish meet the requirements.

Drill: the drill tip, cutting edge and the chip flutes (spiral or straight groove), used primarily for pre-cast hole no hole machining workpieces, machined holes are generally cylindrical and roughness poor.

Reamer: the cutting edge and the flutes constitute (welding blade reamer), mainly used to have holes or pre-cast bottom in the cylindrical holes expanded and improved and roughness, but this time the hole is still not It can be used as a pin hole.

Reamer: flutes the cutting edge and the configuration (usually solid carbide), mainly used to improve the bottom outlet of the cylinder and roughness;

It can be seen that the drill bit and reamer between differences in the structure and precision there are some differences. When you purchase should pay attention to distinguish Oh! Tools Co Ltd Changzhou too good drill, step drill, spiral groove drilling products, please contact us Oh! We sincerely look forward to working with you!