Page 92 - HOLE MAKING CATALOG p001-148

INDEXABLE DRILLS USER GUIDE

Cutting Condition Recommendations Indication of Drill Head Wear

CHAMIQDRILL Wear Limit
Feed vs. Drill Diameter
0.2-0.3
D=33.0-40.0
Mtl. No. V m/min mm/rev

1 80-110-140

2 80-105-130

3 80-100-120 0.30 0.40 0.50

4 70-90-110 Diameter Change
Ø > D nominal + 0.15 mm
5 50-70-90
D nominal
6 80-100-120 Ø < D nominal - 0.03 mm

7 70-90-110 0.30 0.40 0.50 Power Restriction
8 50-70-90 P(1) Px1.25(2)

9 40-55-70 0

10 50-70-90 0.25 0.30 0.35 (1) New drilling head
11 40-60-80 (2) Worn-out drilling head

15 90-125-160 Surface Finish Declines
Ra
16 80-110-140

17 90-135-180 0.40 0.50 0.60
18 80-110-140

19 90-125-160

20 80-110-140

Recommended cutiing data

Flow Rate vs. Pressure and Drill Diameter

Drill Diameter (mm) Pressure (bar) Flow Rate
(liter/min)

33 20 60

34 20 60

35 20 60

36 20 60

37 20 60

38 20 70

39 20 70

40 20 70

Achievable Hole Tolerances

5xD Drills 400 mm Modular Drills Alloy and

Alloy and Carbon Steel and Cast Iron Carbon Steel and Cast Iron

Hole Geometrical Feature What Should You Expect Hole Geometrical Feature What Should You Expect

Ø Diameter tolerance +0.06 mm Ø Diameter tolerance +0.06 mm

Circularity 0.035 Circularity 0.035

Hole axis straightness (/100mm) 0.03-0.10 Hole axis straightness (/100mm) 0.03-0.15

Surface finish 0.6-3.2Ra Surface finish 0.6-3.2Ra

90 ISCAR