Page 86 - HOLE MAKING CATALOG p001-148

INDEXABLE DRILLS Head and Body Assembly USER GUIDE
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Drilling Limitations

MD-DR-DH Inserts Assembly Flow Rate vs. Pressure & Drill Diameter
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Drill Diameter Pressure (bar) Flow Rate
(mm) (liter/min)

33 20 60
60
34 20 60
60
35 20 60
70
Important: 36 20 70
70
For MD-DR-DH Head 37 20
• A short pre-hole 1XD deep (minimum) with H8
38 20
hole tolerance should be prepared to guide
the long drill (an endmill can be used) 39 20
• Use HD chip breaker for internal insert
40 20
MD-DFN Head Assembly
123 • Internal coolant supply only

4

For MD-DFN Head
Max allowed Δ = 0.04 mm
Axial runout & Radial runout

84 ISCAR