Lubrication

Insert Bearings – Relubrication and Maintenance

1. Lubricants:

• The bearings are factory greased and ready for operation.

• For normal applications, use NLGI 2 lithium grease or an equivalent type.

• For slower rotational speeds, grease with EP additives can be beneficial.

• Consider the operating temperature range. For applications above 110 °C, use a high-temperature grease.

2. Relubrication:

• Apply small amounts of grease at frequent intervals rather than large amounts at long intervals.

• For optimal relubrication, let the bearing rotate while fresh grease is pumped in.

• Avoid overfilling the bearing, as this increases resistance and raises operating temperature.

• If excess grease causes overheating, remove the grease fitting or plug to allow the excess grease to escape.

• Bearings that require relubrication must not exceed an angular misalignment of ±2°, to ensure that the grease channels function correctly.

3. Cleaning and Inspection:

• It is normal for a small amount of grease to escape at the seal and contact surface between the bearing and the housing. This also helps to keep dirt and moisture out.

• In dirty or moist environments, a continuous flow of fresh grease is beneficial, as it helps to flush out dirt and condensation.

• Inspect bearings regularly for signs of wear, damage, or contamination.

4. Relubrication Intervals:

• Two tables have been developed to serve as a basis for your relubrication schedule:

  • One based on rotational speed.

  • One based on temperature and operating conditions.

• Always adjust the schedule to best suit your specific application.