BIG DAISHOWA Product Guide Vol 3

TAP HOLDERS

R

BCV BBT

HSK

BIG CAPTO

CKB

COOLANT

THROUGH

MGT 6-MGT 20 Tapping Range: ANSI: No.0-NPT1", JIS/DIN/ISO: M1-M36

54 bodies and 276 tap holders available to improve thread quality and tool life during rigid tapping. Reduces thrust loads caused by synchronization errors up to 90%. Super slim nuts and varied length tap holders provide optimal access to confined areas which eliminates the need for special length taps.

Coolant-Through Center Capability for All Models Coolant is supplied through the tool and to the tool periphery simultaneously.

12

Through Tools

Jet Through

Also available in straight shank & N/C lathe type. See pg. 17.

Coolant is Supplied Through Both the Tool and Slits of the Tap Holder

Coolant is Supplied Through Slits of the Tap Holder

MGT 3 Tapping Range: ANSI: No.0-No.6, JIS/DIN/ISO: M1-M3

MGT 36 Tapping Range: ANSI: AU13/16-AU1-1/2, JIS/DIN/ISO: M20-M36

Secure Drive The body and tap holder are fixed with a drive key in the rotation direction as well as the square of the tap.

Time (sec.)

Load To Tap

0

.2

.4

.6

.8

1.0

1.2

1.4

1.6

-90 -68 -45 -22 0 22

BIG MEGA SYNCHRO

Approx. 13.2 lbs

BIG MEGA SYNCHRO reduces load to approx. 13.2 lbs. This is less than 1/10th of the load compared to a collet chuck.

Drive Key

SPIRAL TAP AU:1/4-20, N=1,000 RPM

-180 -160 -135 -110

Spiral grooves on spiral tap cause loading in the reverse direction, similar to an end mill. •Measured by Kistler Dynamometer

Approx. 165 lbs. of reversal load is applied to a tap held with a collet chuck.

Approx. 165 lbs Collet Chuck

forward

stop

reverse

Powered by