FLENDER Standard Couplings Taper Clamping Bushes © Siemens AG 2015 General information ■ Overview Taper clamping bushes are machine elements which connect a machine shaft with a hub part positively and non-positively. The machine shaft must be designed as a cylinder with a keyway. The hub part must have a conical mounting hole with special threads and forcing-off holes. Each Taper clamping bush size is available with a large number of metric or imperial holes in inches and can therefore connect the respective hub part to shafts of different diameters. ■ Benefits Hub parts must frequently be provided with a finished bore to re- ceive the machine shaft.
In the case of very economically priced hub parts, this remachining is frequently costlier than the com- ponent itself. With the Taper clamping bush, a very simple and economically priced shaft/hub connection which can be used without remachining is achieved. Thanks to standard dimensioning, Taper clamping bushes can be used in different hub parts, thus facilitating storage. Taper clamping bushes are also standard stock at many specialist dealers and so are readily available. Although the dimensions of the Taper clamping bushes are not standardized, standard dimensions have become accepted, so that replacement Taper clamping bushes are nearly always available locally.
Since in Europe and North America unfortu- nately different fixing bolts (UNC and BSW threads) are used, these Taper clamping bushes are not interchangeable. ■ Application Taper clamping bushes are used in ELPEX-B and ELPEX-S coupling types. Taper clamping bushes are also used in pulleys, sprockets and, with the aid of a welded-on hub, in other compo- nents. 14 14/2 Siemens MD 10.1 · 2015