Page 131 - HOLE MAKING CATALOG p001-148

USER GUIDE INDEXABLE DRILLS

DR-DH Deep Drills for Milling Centers and Lathe Machines

DR-DH are drills for a drilling depth-to-diameter ISCAR offers two drill versions:
ratio of 7xD and up, to be used on standard Single Flute
horizontal milling centers, turning, and multi-task DR-DH-31.65-0350NC-2FS
machines. Use of supplementary machine and • Very rigid tool
setup can be avoided. These drills can be used • Designed for easy to cut materials such
with the existing adaptations, not requiring any as cast iron and low alloyed steel
special coolant pressure or extra pump capacity. • Patented chip gullet design

DR-DH drills are available as semi-standard items Double Flute
in the diameter range of 25.4 to 69.5 mm. DR-DH-31.65-0350NC-2FD
• Double chip gullet for improved chip flow
Features • Designed for drilling gummy materials such as
• High feed drilling: up to 0.35 mm/rev for high productivity non-alloyed steel and high temperature alloys
• Excellent surface quality: Ra = 0.6 – 2.0 [µm]
• Good hole cylindricity: 50-80 [µm]
• Hole tolerance: IT10
• Large drilling depth: L=7xD and higher – up to 800 mm
• Carries standard SOMX/SOMT indexable

inserts with 4 cutting edges
• No dedicated machine or extra setup needed
• Standard coolant pressure as used in general drilling
• Standard indexable, double-ended guide pads
• Used for steel (ISO P) and cast iron (ISO K) materials

Designation N C -2 F D
Metric
DR - DH - 31.65 - 0350

Family Drilling depth (mm) Shank dia. F=Cartridge
R= No cartridge

Dia. (mm) Shank Type No. of Pads D=Double flute
S=Single flute

Inch N C- 2 FD
DR - DH - 1.500 - 12.00

129