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Item have no hub step.
U.S. Tsubaki offers the most complete line of QD® and TAPER-LOCK 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 to 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 U.S. Tsubaki hubs are made from steel bar stock (not powdered or sintered metal). The QD and TAPER-LOCK weld-on hubs listed below include appropriate tapered bores and mounting holes.
TAPER-LOCK® is a registered trademark of Rockwell Automation.
QD® is a registered trademark of and is used under license from Tsubaki E&M Co.

All dimensions are nominal values and for reference only
Unit of Measure

Specifications

Weight

 N/A 25.000 lb

Use Bushing

 N/A 4040

D

 N/A 7.750 in

P

 N/A 7.750 in

L

 N/A 4.000 in

T

 N/A 1.000 in

Information

 N/A TAPER-LOCK type W weld-on hubs are designed for use in applications such as welding to plate sprockets, pulleys, and agitators. They are made of steel, drilled, tapped, and taper bored for TAPER-LOCK bushings.

UPC Code

 N/A 097039387257