Best Practices for Storage, Removal and Transportation of Bearings

Proper handling and storage of bearings is important to assure the best in bearing performance. Improper storage and handling can damage a bearing and/or create unnecessary contamination which can lead to bearing failures.

BEARING STORAGE

To ensure optimal bearing performance, bearings should always be stored flat, indoors, in low humidity and in original packaging.

NSK recommends that the Bearing Storage Area be:

  1. Clean.
  2. Dry.
  3. Kept at a consistent temperature.
  4. Kept away from vents or windows that might alternate temperature.
  5. Humidity less than 75%.
  6. Free from vibration.

If the bearing has been in use and removed from equipment, refer to these guidelines for storage after removal;

  1. Coat with LPS3 (or other corrosion inhibiting oil).
  2. Tightly wrap the bearing with VCI wrapping paper.NSK Bearing
  3. Lay bearings flat, not on end.
  4. For large bearings, lay flat on a wooden pallet.
  5. For smaller bearings, place flat in cardboard boxes.
  6. Always remember to follow 6 storage criteria from list above.

BEARING REMOVAL

When a bearing needs to be removed from equipment, follow the guidelines below:

  1. Flush the bearing grease before final shutdown to remove as many contaminants as possible.
  2. Perform a visual inspection of the housing, neck and bearing before cleaning.
  3. Thoroughly clean bearing with a petroleum based solvent.
  4. Immediately apply rust preventative oil to avoid corrosion after cleaning.
  5. For spherical bearings, oil should be applied while rotating the inner ring to reduce potential scratching.
  6. Align ring and support all rolling elements.
  7. Handle with care.

BEARING TRANSPORATION

Follow these guidelines to transport bearing only:

  1. Clean the bearing.
  2. Coat with LPS3 (or other corrosion inhibiting oil).
  3. Place O-ring material next to the sides of the rolling elements to avoid false brinelling.
  4. Tightly wrap bearing with VCI wrapping paper.
  5. Cover with heavy plastic bag or wrap with tire wrapping.
  6. Lay flat on a wooden pallet base and secure with blocks to prevent movement.
  7. Strap everything down to pallet.

If you need to transport assembled bearing in its housing, we recommended a few modifications for safer transport:

  1. Flush housing with new grease or oil.
  2. Rotate shaft to spread the lubricant.
  3. Secure the housing to the transport surface using the housing mounting flanges if possible.
  4. Secure the rolls with straps to the transport surfaces to reduce possibility of false brinelling.
  5. Cover the assembly with tarps and strap everything down.

Following these guidelines will help reduce bearing damage during storage and transportation.

Stay tuned for more bearing maintenance tips and best practices to optimize bearing performance.  For more information, visit our website and follow NSK on Facebook, Twitter, Linked-In and YouTube.
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One Response to Best Practices for Storage, Removal and Transportation of Bearings

  1. Nissi HRB says:

    Awesome! Great article for bearing maintenance tips and best practices for optimize bearing performance. Thanks! http://www.hrbearings.net/

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