Timberline 630-708 High Speed Steel (HSS) DIN 338 Fully Ground Slow Spiral 1/2 D x 5-15/16 Inch Long Drill

Brand: Timberline

SKU: #630-708

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DDiameter	dShank	LOverall Length	Type	Use with Tool #
1/2	1/2	5-15/16	Slow Spiral	55144, 55145		Timberline 630-708 High Speed Steel (HSS) DIN 338 Fully Ground Slow Spiral 1/2 D x 5-15/16 Inch Long Drill More info

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Overview

Slow Spiral, HSS M2 Fully Ground Replacement Drill Bits

For use with Drill Adapters, Counterbores and Adjustable Depth Stop Countersinks*.

CNC Countersink

Drilling countersinks with these bits on the CNC machine is a great way to save time and have your pieces look great every time!

With the adjustable depth drill bit you can adjust them for whatever size material you’re working with. They are best used with a drilling toolpath, utilizing the peck drill option at 0.25” per pass with a 0.125” retract height.

For best results run at 3,000 RPM with a 30 Inches Per Minute (IPM) plunge rate. No feed rate needs to be set with these as they only move up and down with the Z axis, not side to side. If your software doesn’t allow a 0 feed rate, you can enter 1 IPM in the feed rate as a placeholder.

*For 5/16" dia. round shank use a 7-8mm Spring Collet. For 3/8" dia. round shank use 9-10mm Spring Collet.
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