These shaft coupling assemblies have excellent tolerance to vibration, shock, misalignment and moderate torques in all directions.

The three main components of these inner facing taper bore/pilot bored F/B type tyre drive coupling assemblies are the central tyre and the two opposing flanges, one machined with an inner facing taper to house the shaft attachment bushing and the other flange with a pilot bore to guide on-site machining for the attachment method of your choice. The bushings are not included in the package; instead, they should be chosen independently for the preferred fitting and shaft sizes.

Each coupling assembly is packaged with all the required securing plates and bolts. Inner facing taper bore/pilot bored F/B type tyre drive coupling assemblies do not require lubrication either prior to assembly or in service.

The F/B designation in these inner facing taper bore/pilot bored F/B type tyre drive coupling assembly units designates the combination of an inner tapered flange (F) and pilot bored flange (B). You can also find alternative combinations in other sections of our catalogue that will be designated as B/B (both flanges pilot bored), H/H (both flanges machined with outward tapers), H/B (a pilot bored and outward taper combination) and so on.

We stock ranges of the necessary bushes in other sections of our catalogue and have a range of replacement rubber and chloroprene tyres that will fit any of these coupling combinations.

If the environment in which your coupling will operate is sensitive to static or presents fire risks, you are advised to choose a FRAS (fire-resistant anti-static) chloroprene tyre. Some inner facing taper bore/pilot bored F/B type tyre drive coupling assembly units in this section come with chloroprene tyres, others with natural rubber tyres.

To assemble, first fit the external clamp rings over each of the shaft ends; next, use a torque wrench to secure your taper lock bushes. A vernier or tape measure should be used to move the shafts to the correct distance from each other, which is important to optimise the coupling for tolerance of float and misalignment. The optimum distance is specified in the technical documentation; however, if you are in any doubt, please consult the Simply Bearings customer service advisors.

Next, insert the intervening backing plates and their bolts. These bolts are left loose until the tyre has been fitted. Ensure that the tyre is fully seated into the grooves in both opposing flanges (large tyres may be assisted with a rubber mallet if necessary), and then the clamping rings may be tightened to secure it in place. It is normal for a 2mm gap to remain between the edges of the split tyre, or as much as 10mm with the largest tyres.

If you need assistance selecting the correct inner facing taper bore/pilot bored F/B type tyre drive coupling assemblies for your application, call Simply Bearings for assistance.