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. Tsubakimore
Unit of Measure

Specifications

Weight_SYN

25.000 lb

Bushing Series_SYN

4040

Flange Outside Diameter_SYN

7.750 in

Pilot Diameter_SYN

7.750 in

Total Length_SYN

4.000 in

T

1.000 in

Information

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

097039387257