The Min.
Clamping length
Air-bleeding hole
SET SCREW(accessory)
(For BBT shank)
Adjusting Screw
（
Option
）
The Min.
Clamping length
Adjusting Screw
（
Option
）
COOLANT
Reduction Sleeve
Face Contact
Slide the exclusive MEGA
WRENCH over the nut to leave
the face marked
" LOCK " nearer the cutting
tool.
Tighten by rotating the MEGA
WRENCH in the direction of the
arrow (clockwise) until the nut
achieves absolute contact with
the body.
Slide the MEGA WRENCH over
the nut to leave the face
marked "OPEN" nearer the
cutting tool. Rotate the MEGA
WRENCH in the direction of the
arrow ensuring the nut
achieves its free position.
Then disassemble the cutting
tool.
・
・
・
Before clamping or unclamping clean the outer diameter of the Nut with a cloth or similar to prevent slipping.
Be careful not to touch the cutting tool with the MEGA WRENCH when applying to the nut.
Always release the nut at least a further revolution after removing the cutting tool.
Failure to do so could result in reduced gripping force on the subsequent tightening and possible failure during
cutting.
CAUTION
CAUTION
ASSEMBLE
DISASSEMBLE
L
O
C
K
L O C K
L
O
C
K
O
P
E
N
O P E N
OPERATION MANUAL
When using reduction sleeves,
care must be taken to insert fully
into the chuck to obtain sleeve to
chuck face coantact.
When using coolant together with a reduction sleeve, the exclusive
sealed sleeve is required.
[Standard type]
For adjusting the projection length of the
cutting tool.
Please refer to the catalog.
[Jet-through type]
HOW TO USE MEGA WRENCH
SPECIFICATION
USE WITH REDUCTION SLEEVE
(OPTION)
AXIAL LENGTH ADJUSTING SCREW
(OPTION)
NEVER USE any chuck which has been damaged or has cracks.
Remove any flaws and traces of oil and particles from both the
inside of the chuck and cutting tool shank.
DO NOT USE any cutting tool which shows wear to its second rake
of more than 0.4mm(.016").
The cutting tool should always be held via a
cloth or similar to avoid injury on the cutting
edges.
Use a shank of cutting tool with the tolerance
within h7.
DO NOT USE the side-lock type of cutting tool
which has notches on the shank.
1.
2.
3.
4.
5.
6.
DO NOT continue if vibration / chatter is experienced.
DO NOT touch the chuck or cutting tool while the spindle is
revolving.
1.
2.
ASSEMBLY OF THE CUTTING TOOL
in the NEW Hi-POWER MILLING CHUCK
DURING OPERATION
NEVER clamp the nut without a cutting tool being inserted.
recommend our own make of pullstud to be compatible with
the NEW Hi-POWER MILLING CHUCK. It should be replaced
every two years.
DO NOT USE any pullstud which has damage marks to its draw
head area or is deformed.
1.
2.
3.
OTHERS
Before clamping, please clean the contact faces on the end faces of the nut and the body. Otherwise It influences the runout accuracy.
Spindle Speed is related to the regularity of the machine, safe speed must be ensured by increasing gradually from the lower one.
4.
1.
For BBT Shank
When using spindle through coolant, plug M4 Set Screw (accessory) applied with sealing compound in air-bleeding hole.(Set Screw is
attached to the top of the body packed.)
2. For use of Jet-through type with coolant,
always leave 1 mm or more gap between
the end of cutting tool shank and the bottom
of the chuck bore. Failure to do so blocks
flow of coolant. When used with the
LENGTH ADJUSTING SCREW, coolant is
not blocked.
3. The length of the cutting tool shank which
is inserted into the chuck must be longer
than the min. clamping length.
Body
Cutting
Tool
With gap
Body
Cutting
Tool
Without gap
BBT40, HSK-A63, F63, C5 and C6 models should carry “A” at the end of the model numbers.
CAUTION
MEGA DOUBLE POWER CHUCK
®
Please read these instructions before use and keep them where
the operator may refer to them whenever necessary.
OPERATION MANUAL DOWNLOAD SITE
http://big-daishowa.com/manual_index.php
Model
Min. Clamping Length(mm)
50(52)〈BBT30･50,BDV50,HSK-A40･50･100,
HSK-A63-MEGA16D-80,HSK-F63, C4･8〉
55(57)〈BBT/BDV40,HSK-A63,C5･6〉
50(52)〈BBT30〉
51(53)〈HSK-A50, C4〉
56(58)〈BBT/BDV40･50,HSK-A63･100,
HSK-F63,C5･6･8〉
57(59)〈BBT/BDV40,HSK-A63,HSK-F63,
C5･6〉
65(67)〈BBT/BDV50,HSK-A100,C8〉
64(66)〈BBT/BDV40,HSK-A63,HSK-F63, C6〉
71(73)〈BBT/BDV50,HSK-A100,C8〉
71(73)〈BBT/BDV50,HSK-A100〉
75(77)〈BBT/BDV50〉
MEGA
.625DS
MEGA
.750DS
MEGA
1.000DS
MEGA
1.250DS
MEGA
1.500DS
MEGA
2.000DS
2.1〈BCV50, HSK-A100〉
2.3〈BCV40, HSK-A63, C6〉
2.3〈BCV40･50,
HSK-A63･100, C6〉
2.3〈BCV40, HSK-A63, C6〉
2.4〈HSK-A100〉
2.7〈BCV50〉
2.6〈BCV40, HSK-A63, C6〉
2.9〈BCV50, HSK-A100, C8〉
2.9〈BCV50, C8〉
3.1〈BCV50〉
MEGA
16D(DS)
MEGA
20D(DS)
MEGA
25D(DS)
MEGA
32D(DS)
MEGA
42D(DS)
MEGA
50D(DS)
Model
Min. Clamping Length(mm)
