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8

TABLE OF RECOMMENDED FEED MM/REV. FOR DRILLS

Drill diameter

0,015

0,020

0,023

0,030

0,035

0,050

0,070

0,090

0,030

0,050

0,080

0,100

0,120

0,150

0,160

0,200

0,038

0,070

0,100

0,160

0,200

0,220

0,250

0,270

0,047

0,085

0,130

0,180

0,250

0,250

0,270

0,300

0,053

0,100

0,150

0,220

0,270

0,320

0,360

0,400

0,060

0,120

0,180

0,240

0,300

0,400

0,470

0,520

0,075

0,150

0,250

0,300

0,350

0,490

0,620

0,750

0,090

0,180

0,270

0,370

0,450

0,620

0,830

1,000

0,100

0,200

0,280

0,400

0,470

0,650

0,900

1,100

0,120

0,230

0,300

0,450

0,500

0,720

0,950

1,200

0,127

0,250

0,330

0,480

0,530

0,850

1,100

1,300

0,160

0,270

0,370

0,500

0,550

0,900

1,200

1,350

Ć

1

Ć

2

Ć

3

Ć

4

Ć

5

Ć

6

Ć

8

Ć

10

Ć

12

Ć

14

Ć

16

Ć

20

a

b

c

d

e

f

g

h

Group

The symbols of feed groups are given in the drills selection table by the recommended cutting speed

SELECTION TABLE

Norm

Tolerance

Strona

External

coolant

Material

Coating

Range of

diameter

Page

number

Geometry

Center drills

WDG

WST

Deburring tools

Countersinks

Deburring tool

PF

with

solid pilot

Taper

reamers

DIN-335

DIN-6537L

Step drill

Drills to romove broken taps

DIN-6537L

DIN-333A

NC

NC

DIN-335

DIN-335

DIN-373

δ90°

δ60°

δ120°

δ90°

δ90°

δ90°

δ90°

δ30/45/60°

VHM

AT

2,5÷10,2

HSSE

TN2

3÷16

HSSE

TN2

2,5÷10,2

-

-

HSS

VHM

AT

4÷20

VHM

AT

4÷20

HSS/

HSSE

HSS/

HSSE

TN2

HSSE-Co8

TC

HSS

-

HSS

-

HSS

-

148

149

150

150

151

152

152

153

153

153

155

156

157

Drilling tools

0,8÷10