Drilling Holders

Jacobs Taper Arbors

Order Retention Knob separately. [+]
  • Constructed of alloy steel for long, durable service life.
  • Hardened to RC 56-60 for long service life.
  • Shiny taper with black oxide finish for the best combination of accuracy and durability.
  • Taper T.I.R. ≤.0002”.
  • Parsymmetry™ design for high-speed operation.
  • Plastic bumper protects spindle and holder during tool changes. Available on NMTB 40 and 50 arbors only.
JACOBS TAPER 1
Part Number Taper Type A (Dia.) C G
B30-01JT118 BT 30 .384 1.18 .18
JACOBS TAPER 2
Part Number Taper Type A (Dia.) C G
B30-02JT118 BT 30 .559 1.18 .18
B40-02JT1 BT 40 .559 1.18 .12
C40-02JT1 CAT 40 .559 1.50 .12
C50-02JT1 CAT 50 .559 1.50 .12
N30-02JT1 NMTB 30 .559 1.00 .12
N40-02JT1 NMTB 40 .559 1.00 .12
PC4-02JT1 PC4 - 6.25 .12
PC6-02JT1 PC6 - 6.25 .12
JACOBS TAPER 3
Part Number Taper Type A (Dia.) C G
B40-03JT1 BT 40 .811 1.18 .12
C40-03JT1 CAT 40 .811 1.50 .12
C50-03JT1 CAT 50 .811 1.50 .12
N30-03JT1 NMTB 30 .811 1.00 .12
N40-03JT1 NMTB 40 .811 1.00 .12
N50-03JT1 NMTB 50 .811 1.50 .12
PC4-03JT1 PC4 - 6.25 .12
PC6-03JT1 PC6 - 6.25 .12
JACOBS TAPER 4
Part Number Taper Type A (Dia.) C G
B40-04JT1 BT 40 1.124 1.18 .12
C40-04JT1 CAT 40 1.124 1.50 .12
C50-04JT1 CAT 50 1.124 1.50 .12
N30-04JT1 NMTB 30 1.124 1.00 .12
N40-04JT1 NMTB 40 1.124 1.00 .12
N50-04JT1 NMTB 50 1.124 1.50 .12
PC6-04JT1 PC6 - 6.25 .12
JACOBS TAPER 6
Part Number Taper Type A (Dia.) C G
B40-06JT1 BT 40 .676 1.18 .12
C40-06JT1 CAT 40 .676 1.50 .12
C50-06JT1 CAT 50 .676 1.50 .12
N30-06JT1 NMTB 30 .676 1.00 .12
N40-06JT1 NMTB 40 .676 1.00 .12
PC6-06JT1 PC6 - 6.25 .12
JACOBS TAPER 33
Part Number Taper Type A (Dia.) C G
B30-33JT218 BT 30 .624 1.18 .22
B40-33JT1 BT 40 .624 1.18 .12
C40-33JT1 CAT 40 .624 1.50 .12
C50-33JT1 CAT 50 .624 1.50 .12
N30-33JT1 NMTB 30 .624 1.00 .12
N40-33JT1 NMTB 40 .624 1.00 .12
N50-33JT1 NMTB 50 .624 1.50 .12
PC4-33JT1 PC4 - 6.25 .12
PC6-33JT1 PC6 - 6.25 .12