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Deep hole drilling excellence

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Deep hole drilling excellence


- toolholder meeting the challenges of deep hole drilling.

Efficient production of deep holes can present workshops with a number of challenges. To produce a final product of great qualitywhile keeping your costs under control, you must achieve accuracy, repeatability, a good surface finish as well as a reasonable and predictable tool life. Choosing the best drill for the job is one thing, selecting the best toolholder another.

Runout challenge

Deep-hole drilling challenges may include the evacuation of chips as well as correct choice of coolant. However the most important challenge of deep hole drilling is maintaining control of the runout, which increases with cutting tool length. A moreaccurate method of toolholding, using the adjustable ETP ECOGRIP ER holder can help you compensate for the increasing runout from longertools.

Lowered production costs

Our customer manufacturing high quality valve components was faced with ever increasing cost due to breakage of expensi- ve drills. Using an ER32/CAT40 collet holder in combination with a 3 mm SC drill with 30xD machining length resulted in bad runout values up to 10 microns. After initial drill setting the runout would increase during turret tool changes. Also every time the drill had to be changed in the collet chuck, the setup process would
start all over again, taking up to 30 min each time.


With the introduction of the adjustable high precision toolholder from ETP, ECOGRIP ER, tool setup time and changes are now heavily reduced. Tools are set to 2.5 microns of runout within 5 min. Runout accuracy is
maintained after several drill changes in the holder and after drilling over 2 000 holes.

With the help of the 3 adjustments screws in ETP ECOGRIP ER the tool runout can easily and accurately be set within a few minutes. The hydraulic centering and fastening helps to achieve perfect repeatability.

All in all allowing the customer to benefit from improved hole and part quality, eliminated drill breakages resulting in longer tool life, reduced set-up times and lowered production costs!


Benefits and features

  • Compact holder design
  • For long over-hang applications -
    possibility to dial in the requsted TIR
  • Quick and Easy handling

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Anders Halldan

Anders Halldan

Press contact Marketing 00 46 (0)13 24 71 00

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- leader in hydraulic clamping and centering products

About ETP Transmission AB:

ETP Transmission AB, after being in business for more than 40 years, has successfully developed products for 3 business or application areas.

• Metalworking • Woodworking • Power Transmission

under the registered trademarks ETP® and ETP HYDRO-GRIP®.

Our business concept and all products are based upon the hydraulic principle. The ETP high precision
products offer quick assembly and disassembly. With other words, you can fit your tools or components quick, easy and precise and run at high speeds. Within a few seconds you achieve perfect centering and fastening, simply by tightening of only one screw. Saving you time and money.

We are a global company and our customers are the leaders within their segments. This is the way we likeit, working with companies that expect the absolute best from us. Your challenges drive us forward!

ETP Transmission AB

Roxtorpsgatan 22
S-582 73 Linköping