Speedi Sleeve and Large Diameter Wear Sleeves

Using a Speedi Sleeve, or Wear Sleeve, is the quickest and most sensible way to repair worn shafts

The Speedi-Sleeve has been developed by SKF to solve the problem of worn seal counter-faces at shaft ends. This thin-walled sleeve has a high quality finish to provide an optimal counterface for a radial shaft seal.The sleeve is simply pushed in position over the worn area providing a sealing surface that is as good as a new shaft, if not better.
There is no shaft disassembly or machining involved and costly downtime is minimized. Since the same sized seal as the original can be used, there is no need to search for other seals, or keep a stock of different sizes, which also results in time saved.
No special equipment is required since the installation tool is supplied with the sleeve. A mallet and a pair of pliers are all that is needed for the installation.

Concept:
To seal efficiently, radial shaft seals must run against a smooth round surface - the seal counterface. If the counterface becomes worn, then the seal will no longer be able to fulfil its function, which is to retain lubricant and to exclude contaminants - solid particles, liquids as well as moisture.

Normally, the counterface will become grooved as a contaminant particle is caught under the seal lip and generates a track as the shaft rotates. As this continues, the seal will allow more particles to pass or get stuck, and seal efficiency deteriorates, eventually leading to malfunction of the
component the seal is meant to protect.

To rectify the situation it is necessary to repair the counterface on the shaft - a simple seal repacement will not be sufficient.To repair the shaft it is usually necassary to dismantle the
machine in order to be able to handle the shaft and then grind down the counterface until
it is smooth again. If the grooves are deep the original size of seal will no longer fit properly - a seal with a smaller bore diameter has to be found. Now there is an easy way to repair the counterface with the shaft still in position and without having to look for a different size of seal. The answer is SPEEDI-SLEEVE® from CR.

Acorn stock a full range of Speedi Sleeves available on Next Day delivery - please contact us for details of prices

For further information and technical date, download the Speedi Sleeve and Wear Sleeve PDF