Which spindle can be used to drill deep holes of 1.5 * 47mm for copper parts without cutting? Recommended Nakanishi center water outlet spindle CTS-2630, equipped with an internally cooled drill bit, can complete a deep hole with 2 cuts. The speed can be adjusted from 10-30000 revolutions per minute, and the rotation runout accuracy is 1 μ m. The key is that it can center water outlet, which helps to discharge cutting chips. The drill bit is not easy to hold back.

The most common problem with drilling small diameter deep holes of 1.5X47mm is hole blockage, which can cause the drill bit to break easily and become stuck. This high-pressure water-cooled center water outlet spindle is developed by the Japanese company NAKANISHI for drilling small and deep holes. It is equipped with an EM-3030T-J high torque motor, which greatly improves drilling efficiency.

The coolant for this center outlet spindle can be sprayed from the front end of the drill bit with coolant holes, enabling deep hole drilling and efficient machining. The spindle supports a coolant pressure of up to 20 MPa, and the coolant supply is located at the front. It has a compact appearance and can be installed on automatic lathes or machining centers for use.