• Split-Taper-Weld-on-Hubs
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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Item #

Bushing

OD - Outside Diameter

A

B

C - Pilot Diameter

K

Bolt Circle

W

Weight

N/A G N/A 2.00 in N/A 0.174 in N/A 1.168 in N/A 1.875 in N/A 0 in N/A 1.563 in N/A 0 in N/A 0.40 lb
N/A H N/A 2.50 in N/A 0.174 in N/A 1.621 in N/A 2.375 in N/A 0 in N/A 2.000 in N/A 0 in N/A 0.60 lb
N/A P1 N/A 3.00 in N/A 0.292 in N/A 1.938 in N/A 2.875 in N/A 1.094 in N/A 2.438 in N/A 0.375 in N/A 1.4 lb
N/A P2 N/A 3.00 in N/A 1.100 in N/A 1.938 in N/A 2.875 in N/A 1.094 in N/A 2.438 in N/A 0.375 in N/A 2.5 lb
N/A B N/A 3.88 in N/A 0.292 in N/A 2.623 in N/A 3.750 in N/A 1.438 in N/A 3.125 in N/A 0.500 in N/A 2.3 lb
N/A B N/A 4.50 in N/A 0.709 in N/A 2.623 in N/A 4.375 in N/A 1.438 in N/A 3.125 in N/A 0.500 in N/A 4.7 lb
N/A Q1 N/A 4.50 in N/A 0.709 in N/A 2.875 in N/A 4.375 in N/A 1.563 in N/A 3.375 in N/A 0.500 in N/A 4.4 lb
N/A Q2 N/A 4.50 in N/A 1.606 in N/A 2.875 in N/A 4.375 in N/A 1.563 in N/A 3.375 in N/A 0.500 in N/A 6.9 lb
N/A R1 N/A 5.75 in N/A 0.709 in N/A 4.000 in N/A 5.625 in N/A 2.188 in N/A 4.625 in N/A 0.750 in N/A 7.3 lb
N/A R2 N/A 5.75 in N/A 1.606 in N/A 4.000 in N/A 5.625 in N/A 2.188 in N/A 4.625 in N/A 0.750 in N/A 15.0 lb
N/A S1 N/A 6.75 in N/A 0.946 in N/A 4.625 in N/A 6.500 in N/A 2.563 in N/A 5.375 in N/A 0.750 in N/A 17.0 lb
N/A S2 N/A 6.75 in N/A 2.963 in N/A 4.625 in N/A 6.500 in N/A 2.563 in N/A 5.375 in N/A 0.750 in N/A 30 lb
N/A U0 N/A 8.50 in N/A 2.000 in N/A 6.000 in N/A 8.250 in N/A 3.250 in N/A 7.000 in N/A 1.250 in N/A 32.0 lb
N/A U1 N/A 8.50 in N/A 2.963 in N/A 6.000 in N/A 8.250 in N/A 3.250 in N/A 7.000 in N/A 1.250 in N/A 45.0 lb
N/A U2 N/A 8.50 in N/A 6.016 in N/A 6.000 in N/A 8.250 in N/A 3.250 in N/A 7.000 in N/A 1.250 in N/A 69.0 lb
N/A W1 N/A 12.50 in N/A 2.963 in N/A 8.500 in N/A 12.250 in N/A 4.563 in N/A 10.000 in N/A 1.250 in N/A 130.0 lb
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