Tsubaki offers a complete line of Split Taper style weld-on hubs for insertion and welding to produce “B:” style sprockets, sheaves and other applications without hub protrusion. To provide greater strength for this type of shaft locking mechanism and reduce heat distortion caused by welding, these hubs are dimensionally the same as our sprocket items. Special dimension hubs are available on a made-to-order basis. All Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The Split Taper style weld-on hubs listed below include appropriate tapered bores and mounting holes.

All dimensions in inches unless noted.
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Unit of Measure
Items
Split-Taper-Weld-on-Hubs_G_H

Split Taper Hubs
Split-Taper-Weld-on-Hubs_G_H

Split Taper Hubs
Split-Taper-Weld-on-Hubs_P_B_Q_R_S_U

Split Taper Hubs
Split-Taper-Weld-on-Hubs_P_B_Q_R_S_U

Split Taper Hubs
Split-Taper-Weld-on-Hubs_P_B_Q_R_S_U

Split Taper Hubs
Bushing N/A G N/A H N/A P1 N/A P2 N/A B
OD - Outside Diameter N/A 2.00 in N/A 2.50 in N/A 3.00 in N/A 3.00 in N/A 3.88 in
A N/A 0.174 in N/A 0.174 in N/A 0.292 in N/A 1.100 in N/A 0.292 in
B N/A 1.168 in N/A 1.621 in N/A 1.938 in N/A 1.938 in N/A 2.623 in
C - Pilot Diameter N/A 1.875 in N/A 2.375 in N/A 2.875 in N/A 2.875 in N/A 3.750 in
K N/A 0 in N/A 0 in N/A 1.094 in N/A 1.094 in N/A 1.438 in
Bolt Circle N/A 1.563 in N/A 2.000 in N/A 2.438 in N/A 2.438 in N/A 3.125 in
W N/A 0 in N/A 0 in N/A 0.375 in N/A 0.375 in N/A 0.500 in
X - Total Length N/A 0.625 in N/A 0.875 in N/A 1.313 in N/A 2.313 in N/A 1.313 in
ANGLE of Hole N/A 0 º N/A 0 º N/A 60 º N/A 60 º N/A 60 º
Length of Tapped Holes N/A 0.625 N/A 0.875 N/A 0.625 N/A 0.625 N/A 0.813
Number of Tapped Holes N/A 2 N/A 2 N/A 3 N/A 3 N/A 3
Screw Size - Tapped Holes N/A 1/4-20 N/A 1/4-20 N/A 5/16-18 N/A 5/16-18 N/A 5/16-18
Taper per Foot on Diameter N/A 3/4
Weight N/A 0.40 lb N/A 0.60 lb N/A 1.4 lb N/A 2.5 lb N/A 2.3 lb