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
SPINDLE SYSTEM DUAL CONTACT
BIG-PLUS Taper Catalog Number BBT30-MTA1-60 BBT30-MTA2-60 BBT30-MTA3-80 BBT40-MTA1-45 BBT40-MTA1-120 BBT40-MTA2-45 BBT40-MTA2-120 BBT40-MTA3-75 BBT40-MTA3-135 BBT40-MTA4-90 BBT50-MTA1-45 BBT50-MTA1-120 BBT50-MTA1-180 BBT50-MTA1-210 BBT50-MTA1-250 BBT50-MTA2-45 BBT50-MTA2-135 BBT50-MTA2-180 BBT50-MTA2-210 BBT50-MTA2-250 BBT50-MTA2-300
Standard Taper Catalog Number BT30-MTA1-60 BT30-MTA2-60 BT30-MTA3-80 BT40-MTA1-45 BT40-MTA1-120 BT40-MTA2-45 BT40-MTA2-120 BT40-MTA3-75 BT40-MTA3-135 BT40-MTA4-90 BT50-MTA1-45 BT50-MTA1-120 BT50-MTA1-180
Weight (lbs.)
Reference Drill Dia. (JIS B4302 1)
Fig.
MT
ØD
ØD 1
L
L 1
L 2
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
1
1.260 1.575
—
—
1 2 1 2 1 2 2 1
.71
1
.984
—
—
.118-.551
3.66
.71
2
1.260
—
—
.571-.906
3.66 1.89 4.25 2.48
3
1.575
—
—
.925-1.240
4
1.969
— 3.54
—
1.260-1.969
1.77 4.72 7.09 8.27 9.84 1.77 5.31 7.09 8.27 9.84
.28
—
3.23 5.59 6.77 8.35
—
2
1
.984
.118-.551
1.614 1.693
—
3
3.35
10.6
BT50-MTA2-45 BT50-MTA2-135 BT50-MTA2-180
1
.28
8.6 9.5
—
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
144
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