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QD Hubs and Bushings

Chains

Timing Belt Pulleys

QD Bushings

QD bushings are precision machined and split on one side. They fit over a sprocket or pulley. Once installed, QD bushings are easy to remove.
QD bushings are one of the most common bushing designs used in industrial applications. They feature a taper of approximately 3/4 inch per foot, which offers double the gripping force of other bushing mounting systems. They are also made of high-grade steel with a single split through the bushing’s length.
QD bushings are available in several different sizes. They range in size from JA to M. They also feature a convenient mounting system that makes installation and replacement easy. These bushings are also available in reverse, allowing you to use them on either side of the axle.
QD bushings are ideal for power transmission and shaft attachment applications. They have a tapered grip that allows for quick removal without damaging the shaft.

QD Bushings Types

QD bushings are interchangeable, tapered bushings that offer flexible installation and exceptional holding power. These are available in a variety of shaft bore diameters.. These bushings are available in sizes N through S and come loosely installed. When installing these bushings, be sure to follow the installation instructions.

QD bushings are also called quick detachable bushings. They have a flange on their outer diameter that fits over the sprocket or pulley. These bushings are often split through the flange and taper, making installation easier. They also provide more holding power when tightening the cap screws. Other QD bushing types include SD QD Busings, SK QD Bushings, J QD Bushings, F, E, and SF etc. Check below and get more!

QD Bushing Catalog

What Is a QD Bushing?

A QD bushing is a style of bushing used for connecting two pieces of gearing. It has a 4 degree taper, a flange on its outer diameter, and a mounting system using cap screws. These bushings are the most common style in the industry.

The split tapered flange on a QD bushing creates a strong clamping force on the shaft. This kind of bushing can be interchangeable across different manufacturers, and is most often used on pulleys and sprockets. They are available in fifty-percent-inch to 1-inch dimensions.

The main benefit of this style of bushing is its quick-release ability. and QD style bushings are commonly used in Power Transmission Drives.

QD Bushings

How Does a QD Bushing Work?

The QD type bushing has a straight flange around the tapered outside diameter and the entire flange is completely separated from the bushing. The QD type also uses a hex head screw through the flange to pull the mounted part tightly onto the bushing and compress the bushing’s inner diameter onto the key shaft.

 

QD Bushing Installation Tips

QD bushing installation involves a series of steps and precautions. First, check for contaminants. Next, use the torque wrench to tighten the bushing. It is important to use gradual tightening while maintaining an even torque. If the bushing is too tight, it may cause premature failure. Lastly, make sure to leave a gap of about 1/8″ to 1/4″ between the sprocket hub and the QD bushing flange to prevent damaging pressures on the hub.

To install a QD bushing correctly, make sure to choose a bushing with the appropriate shaft bore size and hub type. Also, make sure to follow the installation instructions carefully.

QD Bushing Vs Taper Lock Bushing

When choosing between a QD bushing and a taper lock bushing, it is important to note that there are differences between the two styles. The former is designed for quick removal and installation, while the latter is designed to be permanently attached to a shaft. Both bushings are available in several shafts bore diameters. Consider the dimensional requirements of the component before selecting which one to use.

Browning QD Bushing
Taper Lock Bushing