Our direct supply chain to Martin Sprockets factories gets a wider range of QD Bushings delivered at the right time at the right price.
Taper bushing are widely used together with sprockets, v-belt pulleys, timing pulleys, coupling and other mechanical parts with taper bore connections.
Taper bushing series are made of high quality engineered components with great tolerance. The feature is usually easy to use and needs no additional alteration. These bushings can match almost all kinds of assemblies and sizes. They are the best choice in style for mechanical connections.
No costly re-boring: full selection of both metric and imperial obtainable.
Standard range suits up to 125mm/5″ shafts & Hub diameter required depends on the application.
Complete brief reach range obtainable, for compact lightweight assemblies & Clean, Compact Style.
Simple installation and removal.

Our immediate supply chain to Martin Sprockets factories gets a wider selection of QD Bushings delivered at the right time at the proper price.
Taper bushing are trusted together with sprockets, v-belt pulleys, timing pulleys, coupling and other mechanical parts with taper bore connections.
Taper bushing series are made of high quality engineered components with great tolerance. The feature is easy to make use of and needs no extra alteration. These bushings can suit almost all sorts of assemblies and sizes. They will be the best choice in design for mechanical connections.
No costly re-boring: full range of both metric and imperial obtainable.
Standard range matches up to 125mm/5″ shafts & Hub diameter required depends on the application.
Complete brief reach range available, for compact light-weight assemblies & Clean, Compact Design.
Simple installation and removal.
The original sheave and pulley mounting system developed to facilitate installation and alternative of components.
The QD (Quick Detachable) design provides for both conventional (flange outboard) and invert (flange inboard) installation configurations.
1. Be sure the tapered cone surfaces of the bushing and the inside of the driven item are clean and free from anti-seize lubricants.
2. Slide QD bushing on shaft, flange end initial. Assemble key.
3. Position QD bushing on shaft. Tighten arranged screw over key “hand tight” with standard Allen wrench only. Usually do not use excessive force.
4. Slide huge end of sheave or sprocket taper bore into placement over cone aligning drilled bolt holes in sheave or sprocket with tapped holes in flange of bushing. Assemble pull-up bolts and lock washers.
NOTE: Install M thru S bushings in the hub so that the two extra holes in the hub are located as far as possible from the bushing’s noticed cut.
5. Tighten pull-up bolts alternately and evenly to tightness indicated in torque desk on back. Do not use extensions on wrench handles. There must be a gap between your face of the sheave or sprocket hub and the flange of the QD bushing to insure a satisfactory cone grip and press fit.
CAUTION: THIS GAP SHOULD NOT BE CLOSED.
Use a tapered or QD bushing from Ever-Power with sheaves, pulleys, sprockets and many other power tranny applications. Flanged quick-disconnect bushings include a completely split design to greatly help provide easy installation and disassembly. A tapered bushing with straight edges uses an internal screw to help drive the bushing into the shaft, while a split taper has a flange and a key on the bushing to greatly help provide more drive.
QD bushings (” and metric sizes) have a flanged style and show a 4° taper with standard or reverse installation. They are stocked in popular completed bore sizes and minimum plain bore for custom qd bushing china reboring.
Many people refer to both types as a “taper lock” because they both use the tapered wedging action to lock to the shaft. The taper bushing, with it’s straight sides, runs on the set screw to drive the bushing into the bore of the component getting installed (sheave, sprocket, etc.). Be cautious when setting up these screws. The holes with threads on the bushing are for removal just. Also remember that the appearance of a flange on the outside of the bushing doesn’t indicate it’s a QD design. Split Taper bushing also offers a flange, and the two aren’t interchangeable. The QD design includes a split that continues through the flange. The Metal QD (Quick Disconnect) Type bushing offers versatile and easy installation while providing exceptional keeping power. QD Bushings are used thought out the industry offering convenience and design flexibility. They are precision machined of quality Steel and are installed by tightening several cap screws. This draws the bushing into the taper bore of the merchandise which compresses the bore of the bushing. QD bushings are easily removed by using the cap screws as jack-screws. Double drilled holes are furnished in QD Bushings permitting mounting of product in the conventional or reverse positions. This enables cap screws to be installed through item hub or bushing flange whichever can be most convenient. A substantial benefit in installation, cap screws are generally inserted from the exterior where they are easily accessible. QD Bushings can be found from share with all popular bores within the range of each size bushing.
QD Bushings include a split tapered flange with the split central to the flange and taper. They are used on sprockets, sheaves, and pulleys where more clamping drive is required over standard bored-to-size bushings. Quick-Disconnect Bushings are essential for mounting v-belt drives, synchronous belt drives and roller chain drives.