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ISO Description – Threading Toolholders 519

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S 1

E 2

R 3

25 4

25 5

M 6

16 7

8

1. Clamp system

2. Outer/inner

E = outer I = inner

S

Cutting Tools 2

Screw

3. Cut direction

4. Shank height

L

R

25 = 25 mm 32 = 32 mm

5. Shank width/diameter

6. Tool length

12 = 12 mm 20 = 20 mm 25 = 25 mm

H = 100 mm K = 125 mm L = 140 mm M = 150 mm P = 170 mm Q = 180 mm

R = 200 mm S = 250 mm T = 300 mm U = 350 mm V = 400 mm

7. Cutting edge length

8. Additional Information

Inclination angle κκ 0 = inclination angle λ 0° 1 = inclination angle λ 1°

Example: Cutting edge length = 16.5 mm Symbol = 16

Machining methods

Cut direction option depends on: • Workpiece (outer or inner thread, right or left thread) • Machine (right or left tool)

Cutting direction to the headstock

Right thread - right tool

Left thread - left tool

ER First option

EL First option

IR

IL

Cutting direction towards tailstock

Left thread - right tool

Right thread - left tool

ER

EL

IR First option

IL First option

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