Page 131 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE

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
horizontal milling centers, turning, and multi-task Single Flute INDEXABLE DRILLS
machines. Use of supplementary machine and DR-DH-31.65-0350NC-2FS
setup can be avoided. These drills can be used • Very rigid tool
with the existing adaptations, not requiring any • Designed for easy to cut materials such
special coolant pressure or extra pump capacity. as cast iron and low alloyed steel
DR-DH drills are available as semi-standard items • Patented chip gullet design
in the diameter range of 25.4 to 69.5 mm.
Features
• High feed drilling: up to 0.35 mm/rev for high productivity
• 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 Double Flute
inserts with 4 cutting edges DR-DH-31.65-0350NC-2FD
• No dedicated machine or extra setup needed • Double chip gullet for improved chip flow
• Standard coolant pressure as used in general drilling • Designed for drilling gummy materials such as
• Standard indexable, double-ended guide pads non-alloyed steel and high temperature alloys
• Used for steel (ISO P) and cast iron (ISO K) materials

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

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
DR - DH - 1.500 - 12.00 N C - 2 F D

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