NAKANISHI CTS-3030 Coolant Through Spindle Instruction Manual

: June 3, 2024
: NAKANISHI

Table of Contents

NAKANISHI CTS-3030 Coolant Through Spindle
Outside View
Specifications
Example of Recommended Combination
What is a “Coolant Through Spindle”
External Coolant vs Through Coolant
Advantages of the Internal Coolant
Problem Solved by CTS-3030
Drilling Data
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NAKANISHI CTS-3030 Coolant Through Spindle

Outside View

$NAKANISHI-CTS--3030-Coolant-Through-Spindle-fig- $1$$

Specifications

Max. rpm| 30,000 min-1| Shank diameter of corresponding tool| ct:,3.0, ct:,3.175, ct:,4.0 mm
---|---|---|---
Coolant pressure| 3.0 – 20.0 MPa| Spindle Accuracy| Within 1 µ m
Standard accessories| Wrench (8 x 5), (9 x 11), (22 x 27): 1 pc. each

Options*1

| ****

Collet*2

| CHA-3.0AA (91494), CHA-3.175AA (91496), CHA-4.0AA (91495)
CHA-3.0 (91430), CHA-3.175 (91493), CHA-4.0 (91440)
ollet nut| CHN-CTA-3.0 (7798), CHN-CTA-3.175 (7799), CHN-CTA-4.0 (7800)

Example of Recommended Combination

High-pressure pump, Intake filter, Intake hose/ filter,
High-pressure coolant hose, High-pressure coolant fitting, Coolant hose, Hose fitting, Manifold block $NAKANISHI-CTS--3030-Coolant-Through-Spindle-fig- $2$$ $NAKANISHI-CTS--3030-Coolant-Through-Spindle-fig- $10$$

What is a “Coolant Through Spindle”

A spindle that uses an oil hole drill to inject coolant from it’s tool tip for drilling. There are several advantages, such as improved discharging of chips, reduced drilling time, extended tool life, and high precision when performing deep hole drilling with a Coolant Through Drill.

External Coolant vs Through Coolant

System	Method		Image	Tools

External Coolant

|

The coolant is applied to the drill tip and flutes.

|
Through Coolant| The coolant is provided through the drill center and injected to the tip of the drill.| |

Advantages of the Internal Coolant

Improved Chip Discharge

By delivering the coolant through the drill and injecting it from the tip of the drill bit, the drill chips are minimized to short pieces to realize a higher level of chip discharging.

Extended Tool Life

The CTS-3O3O enables cooling of the drill tip, which was difficult with the coolant on the outside, thereby improving tool tip durability.
Chip jamming is less likely to occur because of the improved level of chip evacuation, which minimizes the chance of tool damage.

Reduced Drilling Time

Drilling efficiency is improved by non-peck drilling.

High Precision

Since it is not possible to drill a deep through-hole at once with drilling on both sides, unevenness and gaps easily occur. However, non-peck drilling from one side does not lead to unevenness and achieves good hole quality.

Problem Solved by CTS-3030

High coolant pressure is required when using a small-diameter oil hole drill. However, a high-speed spindle capable of high-pressure coolant through did not exist.

CTS-3030 is the Solution! Capable of handling 20 MPa of high-pressure coolant.

Results Achieved using CTS-3030
Using 20 MPa of high-pressure coolant, straight drilling with a <1>3.0, 20 X Diameter Drill is possible. Coolant can now be injected through a minimum diameter O.5 drill, which was very difficult to perform.