One of the most important requirements for mounting our non-contact labyrinth seals is to make sure the inner ring is wobble free. This may be achieved by pressing the inner ring against the shoulder whenever possible. High accuracy is required between shaft and shoulder.
The following mounting methods are general enough that they can be used for all labyrinth seals, including gap seals.
Method One: Face Mounting
If the non-contact labyrinth seal can be face mounted, then we suggest using a mounting bushing to cover the seals and the inner/outer ring, in order to push the seal in place. Both rings are about the same width (+-0.1mm), therefore you will reach a good working position.
For units of extreme accuracy or if the axial clearance is of high importance we recommend a space at the mounting bushing’s aluminum outer ring for optimum positioning.
Method Two: Mounting Inside the Unit
If face mounting is not possible due to the design of the spindle or application, we recommend another way of mounting the non-contact labyrinth seals as outlined below.
| The GMN Seal should be fitted to the shaft. | The shaft can be pushed slowly into the housing. In this case the housing flange will be kept in position by a split distance ring of the width Sa/2. | After removing the distance ring the flange will be fitted to the housing. This way the outer ring of the seal is carried into the right working position by the press fit of the outer ring to the flange. |
Method Three: The Catch All Mounting Method
The below method for mounting can be used for applications when method one or two won’t work.
| The GMN Seal will be mounted to the housing flange. | The shaft will be pushed slowly into the housing, while the seal’s outer ring is kept in position by a split distance ring of high accuracy. |
After the assembly the distance ring will be removed and both rings will be in the perfect position for high sealing efficiency.