
Use Loctite.
The appropriate clamping torque is important in order to prevent the
pullstud loosening and the taper shank form distorting.
1
TO ASSEMBLE PULLSTUD
Confirm the model of the pullstud.
Clean the thread and location diameter to which
the pullstud is to be fitted.
Remove any traces of oil or particles from the pullstud.
Apply Loctite.
2
3
4
5SHANK No.
CLAMPING TORQUE(N m)
BT/DV/CV 30
BT/DV/CV 40
BT/DV/CV 45
BT/DV/CV 50
25
-
30
77
-
89
100
-
120
140
-
160
INSPECTION OF PULLSTUD
A pullstud is subjected to tons of drawbar force and force exerted by heavy
duty machining and vibration. For this reason the pullstud should be regarded
as an expendable item and regular replacement is recommended for safety.
Please inspect the pullstud at every change of the cutting tool as described.
APPLYING A TORQUE WRENCH
NEVER TIGHTEN AS FOLLOWS
Ensure to calibrate the torque wrench
on a regular basis in order to achieve
the appropriate torque.
Re-clamp the pullstud to ensure it is firmly fitted at every
change of the cutting tool or index or replacemant of inserts.
Please be aware that removing the pullstud from a #30 shank
may lead to insufficient taper contact since the cross section is
thin at the small end.
TOOL BODY
PULLSTUD
OPERATION MANUAL
Please read and follow the manufacturers instructions.
Should the torque wrench be applied at an inappropriate
angle to the pullstud then the correct tightening torque will not
be achieved.
The torque wrench should be examined regularly for safety.
LOCTITE
NEVER use an extension bar.
DAMAGE
LOOSENESS
This is particularly possible in spindle types with ball clamping mechanism. The pullstud
is apt to have an indentation mark. Please note this indentation could lead to breakage
of the pullstud.
The pullstud is subjected to forces during ATC and vibration in operation. Please
confirm the pullstud is tight and re-tighten at least on every occasion the cutting tool or
inserts are changed or indexed.
FOR HIGH SPEED CUTTING OR HEAVY CUTTING
TORQUE WRENCH
EXTENSION BAR
NEVER tap the tightening wrench.
HAMMER
WARNING
CAUTION CAUTION
Thank you for purchasing PULLSTUD.
Please read these instructions before use and keep them where the operator may refer to them whenever necessary.
Tighten the pullstud.
Ensure to use a torque
wrench in order to
tighten the pullstud
within the torque range
shown below.
The small end of the taper will be distorted,
so that only partial contact will be made with
the machine spindle.
This will cause chatter and vibration.
The small end of the taper will be distorted,
so that only partial contact will be made with
the machine spindle.
This will cause chatter and vibration.
No.0711PDF
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TEL (+81)-72-982-8277
Toolholders may be pulled out of the machine
spindle at high speeds due to strong centrifugal
forces.
Strong MEGA PULLSTUDS are recommended
to protect against this possibility.