Greases and preservatives

The selection of the correct lubricant is crucial for the reliable functioning of the bearing. The lubricant should be selected according to the operating conditions of the bearing:
■ Temperature
■ Compressive load
■ Speed

Standard grease

As the standard grease for our preloaded AX series, we recommend a special grease from Klüber, which is available worldwide directly from the manufacturer.

It features good pressure and wear stability and does not contain inorganic solid lubricants such as MoS2 or graphite.

The high elastomer compatibility permits use with conventional sealants. If in doubt as to compatibility, sealant materials can be tested.

For relubrication, we recommend dosing systems or central lubrication systems in order to exclude over-greasing of the bearing. The grease is always easy to convey.

Do not remove pre-greased bearings from the protective packaging until just before assembly. In order to avoid grease aging, we recommend that you install the bearing within one year after delivery.

The maximum storage duration must not exceed 3 years from delivery.

In case of relubrication with other greases, the miscibility must be checked. Greases can be mixed under the following conditions:
■ Same base oil basis
■ Consistent thickener type
■ Similar base oil viscosities (not further apart than one ISO-VG class)
■ Consistent NLGI class

The use of non-miscible base oils or soaps leads to premature bearing failure.

Special lubricant

For high-speed applications we can offer you suitable lubricants according to the requirements. For this please contact the myonic application engineering team.

Preservatives

The corrosion protection oil used is compatible and miscible with most mineral oil-based greases and oils.
Check for compatibility when using synthetic lubricants and other consistency enhancers than lithium (complex) soaps.
In case of incompatibility, please consult myonic as to further procedures.

Grease operating period

The grease operating period indicates how long the grease is able to sufficiently lubricate the bearing without relubrication. After the grease operating period has been reached, the bearing will only function to a limited extent. The bearing can fail relatively quickly due to lubricant failure. The grease operating period therefore becomes the determining variable if it is shorter than the calculated bearing life. It applies when rolling bearings cannot be relubricated. The calculation of the grease operating period is based on statistical principles assuming constant operating conditions and suitable, sufficiently available lubricant.

The following operating parameters are required for approximate calculation of the grease operating period:
■ Load cycle in series operation (speed, duty-cycle, standstill,…)
■ Bearing temperature (if available)
■ Bearing cooling (if available)

Please contact myonic application engineering to calculate the grease operating period.

Relubrication intervals

The relubrication procedure should be carried out with the bearing at operating temperature and rotating slowly. This ensures an even distribution of grease in the bearing.
With a calculated relubrication interval of more than 1 year, we recommend relubricating the bearing after 1 year with the defined grease quantity.

Please contact myonic application engineering for calculation of relubrication intervals.