BIG DAISHOWA High Performance Tooling Solutions Vol 3

MILLING CHUCKS

CYLINDRICAL SHANK WITH FLAT SECTION JIS B 4005 (ISO3338-2) The following standard shank is required for MEGA PERFECT GRIP.

W

L 1

Ø16/Ø20

Ø25/Ø32

L

ØD

W

K

L

L 1

Nominal

Tolerance

Nominal

Tolerance

Nominal

Tolerance

0 -.011 0 -.013 0 -.016

16

48mm

24mm

10

14.2

20 25

50mm 56mm

25mm 32mm

11 12

18.2

+.2 0

0 -.4

23

32

60mm

36mm

14

30

• JIS Standards require sizes Ø25 or higher to be double-flat types. The MEGA PERFECT GRIP does not use a rear flat surface, but is capable of clamping double flat shanks • JIS B4005 has the same dimensions as International Standard ISO3338-2 and German Standard DIN1835-1 If adding your own flat, the tool projection length in the MEGA PERFECT GRIP will be decided by the flat position. Refer to H 1 in the MEGA PERFECT GRIP chart, decide the flat position to add, and then cut the cutter at L 1 on cutter shank. ! CAUTION

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