Clean and Lubricate Z-Axis

Model [X] AON-M2 [X] AON-M2 2020
Category [X] Preventive [ ] Corrective [ ] Troubleshooting

Summary

This procedure provides instructions on how to clean and lubricate the Z-axis of your machine. A properly lubricated Z-axis will prevent:

  • Z-axis binding.
  • Sticky and hard to remove contaminants and debris on the Z-axis lead screws, rods, or lead nuts.
  • Loud squeaking while moving in Z.
  • Inconsistent layers.

Tools

Qty Description Specification
2 Rags Lint-free
1 Wide Flexible Scrub Brush -
1 Brass Brush -
1 One-Time-Use Brush -
1 Degreaser Spray Nine®
1 Isopropyl Alcohol 99%

Parts Information

Qty Part Number Description
1 375486CC Super Lube HT E.P. Grease with Syncolon (PTFE)

Only use Super Lube HT E.P. Grease with Syncolon (PTFE) to lubricate the Z-axis. Failure to use Super Lube HT E.P. Grease with Syncolon (PTFE) can cause Z-axis binding and/or squeaking, sticky and hard to remove contaminants and debris on the Z-axis lead screws, rods, or lead nuts, and inconsistent layers.

A Z-Axis Lubricant Field Kit (SKU K-0999-015) is available to purchase. This kit contains the needed lubricant and brushes to properly clean the lead screw.
Please reach out to our Customer Success team at help@aon3d.com to purchase this kit.

Personal Protective Equipment

Qty Description Specification
4 Gloves Nitrile
1 Safety Glasses -

Preparation

  1. Home XYZ.
  2. Push the E-stop button.
  3. Wait until the machine is at room temperature.

Identify Linear Bushings

Machines shipped after November 2020 are equipped with greaseless linear bushings.

  1. Identify if the machine is equipped with greased or greaseless linear bushings. Refer to the figure below. Z-Axis - Greased vs Greaseless Bushings
  2. The greaseless linear bushings are identified by the white inner ring (8).
  3. If your machine is equipped with greaseless linear bushings, skip the steps that clean and grease the linear bushings (1) and linear shafts (4).

Clean Z-Axis

  1. If the machine is equipped with greased bushings do the steps that follow:
    1. Spray the underside of the four linear bushings (1) and two lead nuts (2) with the degreaser. Z-Axis
    2. Let the degreaser soak for ten minutes.
    3. Remove any grease and contaminants from the four linear bushings (1) and two lead nuts (2) with the flexible scrub brush (5), brass brush (6), and rags. Z-Axis - Use Brushes to Remove Grease
  2. If the machine is equipped with greaseless bushings do the steps that follow:
    1. Spray the underside of two lead nuts (2) with the degreaser.
    2. Let the degreaser soak for ten minutes.
    3. Remove any grease and contaminants from the two lead nuts (2) with the flexible scrub brush (5), brass brush (6), and rags.
    4. Spray the underside of the four linear bushings (1) with the isopropyl alcohol.
    5. Remove any contaminants from the four linear bushings (1) with rags.
  3. Release the E-stop button.
  4. Home XYZ.
  5. Lower the Z-axis to the bottom of the build chamber.
  6. Push the E-stop button.
  7. If the machine is equipped with greased bushings do the steps that follow:
    1. Spray the degreaser along the entire length of the two lead screws (3) and the four linear shafts (4).
    2. Spray the topside of the four linear bushings (1) and two lead nuts (2) with the degreaser.
    3. Let the degreaser soak for ten minutes.
    4. Remove any grease and contaminants from the two lead screws (3), four linear shafts (4), two lead nuts (2), and four linear bushings (1) with the flexible scrub brush, brass brush, and rags.
    5. Repeat the four previous steps until the two lead screws (3) and four linear shafts (4) are clean.
  8. If the machine is equipped with greaseless bushings do the steps that follow:
    1. Spray the degreaser along the entire length of the two lead screws (3).
    2. Spray the topside of two lead nuts (2) with the degreaser.
    3. Let the degreaser soak for ten minutes.
    4. Remove any grease and contaminants from the two lead screws (3) and two lead nuts (2) with the flexible scrub brush, brass brush, and rags.
    5. Spray isopropyl alcohol along the entire length of the four linear shafts (4).
    6. Spray the topside of the four linear bushings (1) with isopropyl alcohol.
    7. Remove any contaminants from the four linear bushings (1) and four linear shafts (4) with rags.
  9. Allow degreaser to dry until the linear shafts (4) and lead screws (3) are dry to the touch. Z-Axis - Before and After Cleaning

Lubricate Z-Axis

If your machine is equipped with greaseless linear bushings, do not do the steps that grease the linear bushings (1) and linear shafts (4). Greasing the greaseless linear bushings may cause damage to your machine.

  1. Put on a clean pair of gloves.
  2. Put a thin film of grease along the full length of the four linear shafts (4) and two lead screws (3) with the one-time-use brush (7). Z-Axis - Use Brush to Apply Grease
  3. Release the E-stop button.
  4. Home XYZ.
  5. Lower the Z-axis by 100mm.
  6. Push the E-stop button.
  7. Remove any accumulated grease on the tops and bottoms of the four linear bushings (1) and the two lead nuts (2) with a clean rag. Z-Axis - Remove Accumulated Grease
  8. Make sure that each linear shaft (4) and lead screw (3) has a thin film of grease along their entire length. Put a thin film of grease on any areas that do not have any grease.
  9. Release the E-stop button.
  10. Home XYZ.
  11. Do the steps that follow three times:
    1. Lower the Z-axis to the bottom of the build chamber.
    2. Home XYZ.
  12. Lower the Z-axis by 100mm.
  13. Push the E-stop button.
  14. Remove any accumulated grease on the tops and bottoms of the four linear bushings (1) and the two lead nuts (2) with a clean rag.

Test and Return to Service

  1. Release the E-stop button.
  2. Home XYZ.
  3. Check Z-Axis Lubricant.

Last modified: November 12, 2020