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Tsubaki offers a complete line ofSplit 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 dimensional hubs are available per your specifications 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 otherwise stated.
Unit of Measure

Bushing

 N/A B

OD - Outside Diameter

 N/A 4.50 in

A

 N/A 0.709 in

B

 N/A 2.623 in

C - Pilot Diameter

 N/A 4.375 in

K

 N/A 1.438 in

Bolt Circle

 N/A 3.125 in

W

 N/A 0.500 in

X - Total Length

 N/A 1.750 in

ANGLE of Hole

 N/A 60 º

Length of Tapped Holes

 N/A 0.813

Number of Tapped Holes

 N/A 3

Screw Size - Tapped Holes

 N/A 5/16-18

Taper per Foot on Diameter

 N/A 3/4

Weight

 N/A 4.7 lb