BASIC ARBORS
MORSE TAPER HOLDER Precise finish of the Morse taper bore provides stable runout accuracy.
L
L 1
MT No.
Fig. 1
L
L
L 1
L 1
L 2
MT No.
MT No.
Fig. 2
Fig. 3
R
S P I N D L E S Y S T E M DUA L CON T AC T
BIG-PLUS Taper Catalog Number
Standard Taper Catalog Number
Weight (lbs.)
Reference Drill Dia. (JIS B4302 1)
Fig.
MT
øD
øD 1
L
L 1
L 2
BBT30-MTA1-60
BT30-MTA1-60
1 2 3
.984
2.36 2.36 3.15 1.77 4.72 1.77 4.72 2.95 5.31
1.50 1.50 2.28
1.1 1.2 1.6 2.2 2.9 2.2 3.5 2.2 3.7 3.5 8.6 9.3 9.5 9.7
.118-.551 .571-.906 .925-1.240
-MTA2-60 -MTA3-80
-MTA2-60 -MTA3-80
1
1.260 1.575
—
—
BBT40-MTA1-45
BT40-MTA1-45
1 2 1 2 1 2 2 1
.71
1
.984
—
—
.118-.551
-120
-120
3.66
-MTA2-45
-MTA2-45
.71
2
1.260
—
—
.571-.906
-120
-120
3.66 1.89 4.25 2.48
-MTA3-75
-MTA3-75
3
1.575
—
—
.925-1.240
-135
-135
-MTA4-90
-MTA4-90
4
1.969
— 3.54
—
1.260-1.969
BBT50-MTA1-45
BT50-MTA1-45
1.77 4.72 7.09 8.27 9.84 1.77 5.31 7.09 8.27 9.84
.28
-120 -180 -210 -250
-120 -180
—
3.23 5.59 6.77 8.35
—
2
1
.984
.118-.551
1.614 1.693
—
3
3.35
10.6
-MTA2-45
-MTA2-45
1
.28
8.6 9.5
-135 -180 -210 -250 -300
-135 -180
3.82 5.59 6.77 8.35
—
—
2
10.1 10.6 11.5 12.8
2
1.260
.571-.906
1.791 1.909 1.949
—
3
3.74
11.81
10.31
136
Powered by FlippingBook