SPINDLE SPEEDERS
HIGH SPINDLE CLAMPING RANGE: ø.059"-.630" For Higher Spindle Speeds
MAX 20,000 RPM
COOLANT
THROUGH
L
Drive Key Slot
.0004"
L 1
= 0º-360º
K 1
4D
BBT No.
A
COOLANT
Stop Block
.236 Stroke
R
S P I N D L E S Y S T E M DUA L CON T AC T
Catalog Number
Speed Ratio
Max RPM
Weight (lbs.)
ød
L
L 1
øD 1
øD 2
K 1
S
A
BBT40-GTG5-10-140-65 BBT50-GTG6-10-158-80
.059-.394 .059-.394 .098-.630
5.51 6.22 6.97
.79 .79
1.181 3.150 1.181 3.937 1.654 4.331
1.69 2.28 2.28
2.559 -.354 +.236 3.150 -.354 +.236 3.150 -.354 +.236
4.67 5.67 3.80
20,000 20,000 15,000
10.6 19.4 23.4
-GTG4-16-177-80
1.00
A Stop Block is required. ! CAUTION
• NEW BABY COLLET, nut and 2 tightening wrenches are included • The allowable torque is a calculated value of the drive system, and not the actual torque in cutting • The maximum diameter when using an endmill is ø8mm (GTG5, GTG6) and ø12 (GTG4) • A Stop Block is required when mounting on machines • For continuous rotation of over 30 minutes, the spindle speed should be set within 80% of the maximum speed
ACCESSORIES
COLLET PG. 338
WRENCH PG. 350
STOP BLOCK PG. 385
APPLICATION EXAMPLE
GTG5
GTG6
GTG6
GTG4
Solid carbide end mill ø.315"/ 2 flutes
Solid carbide end mill ø.236"/ 2 flutes
Solid carbide drill ø.079"
Solid carbide end mill ø.630"
Cutter
Workpiece
Duralumin (A-2017)
1055
Duralumin (A-2017)
Duralumin (A-2017)
Spindle Speed Cutting Feed
20,000 RPM
16,000 RPM
20,000 RPM
15,000 RPM
118.1 IPM
137.8 IPM
78.7 IPM
39.4 IPM
High metal removal rate 5.5 cu.in./min.
High metal removal rate 2.1 cu.in./min.
Extended tool life 1,200 holes by 1 drill
Surface roughness RMS max. .00008"
Results
ø.079"
.787"
.394"
.394"
.394"
.039"
.118"
.004"
• Results will vary depending on workpiece, cutting tool, machine model and other conditions • The rigidity and concentricity are often affected by the projection length of a cutting tool, it is recommended to keep the projection as short as possible
160
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