Page 126 - Republic Drill

The Multi-Tool System "D" Exclusively
™
By

HOLE MAKING "D" Piloted Holders DH1 3/4" Watch our instructional videos on

1/2" Reduced Shank w/ 3 Equal Flats
www.RepublicDrill.com/videos

5/8" Diameter Shank* - 21/32" Pilot DH20

21/32

3/4" Lathe Shank w/ 4 (5/8") Sq. Flats** DHS23
Drill Pilot Hole With Insert Blade For Insert Blade & Attach
3/4"
Pilot Drill or Conventional Drilling Without Auxiliary Pilot For
Twist Drill Auxiliary Pilot Larger Diameter Hole
With the use of auxiliary pilots, holes may be drilled up to 2-1/2"
3/4" Straight Shank DH23 diameters in steel while maintaining optimum rigidity with low horsepower.
3/4" Step 1 Drill first pilot hole with a conventional 3/4" twist drill or the 3/4"
Multi-Tool threaded pilot drill.
Step 2 For Finish Hole 1-1/2" or Less
3/4" Diameter Shank* - 13/16" Pilot DH24 Insert finish size blade into piloted holder and drill hole to size.
For Finish Hole Over 1-1/2" to 2"
13/16"
Insert 1-1/2" blade in piloted holder and enlarge hole to 1-1/2".
Next, insert finish size blade into holder, attach 1-1/2" auxiliary
pilot and drill hole to size.
No. 2 Morse Taper Shank DH2T For Finish Hole Over 2”
Insert 1-1/2” blade in piloted holder and enlarge hole to 1-1/2”.
3/4" Next, insert 2” blade in piloted holder, attach 1-1/2” auxiliary pilot,
and enlarge hole to 2”. Finally, insert finish size blade into holder,
attach 2” auxiliary pilot and drill hole to size.
R-8 Bridgeport Shank DHR8 Note: When drilling certain non-ferrous metals, it may be possible to
drill up to a 2-1/2” hole in one pass without the use of one or
both auxiliary pilots.
3/4"
Cutting fluids are always required when machining metals
(except for cast iron) for safe operation and longer tool life.
Select the appropriate fluid for the material to be machined.
Select the same cutting speeds and feed rates as you would for drills of same size.
Pilot
Shank Style Diameter Overall Depth Tool No. Price
Each
Length
of Cut
1/2" Reduced Shank – with 3 Equal Flats 3/4 6 4 DH1 84.24
5/8" Diameter Shank* 21/32 7-1/2 5-1/4 DH20 73.07
3/4" Lathe Shank – with 4 (5/8") Sq. flats** 3/4 7-1/2 5-1/4 DHS23 102.38
3/4" Straight Shank 3/4 7-1/2 5-1/4 DH23 82.52
3/4" Shank* 13/16 7-1/2 5-1/4 DH24 102.38
#2 Morse Taper Shank 3/4 7-1/2 4-3/8 DH2T 90.51
R-8 Bridgeport Shank 3/4 8-1/4 4 DHR8 146.13
* DH20 and DH24 are not offered in 3/4” pilot diameter and cannot be used with pilot drill or auxiliary pilot.
** DHS23 is designed for use in tool post with power feed

Auxiliary Pilots
D Series Standard Duty
For Producing Holes in Steel Holder & Auxiliary Screws
Larger than 1-1/2" in Diameter

Diameter Blade Dia. Range Tool No. Price Each Description Tool No. Price
Each
1-1/2" 1-17/32" – 2" DX15 31.40 Set Screw for "D" Series Holders Part SS51624-38 0.75
2" 2-1/32" – 2-1/2" DX20 34.37 Auxiliary Pilot Screw for "D" Series Part CF51624-58 0.75
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