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Part# 10650-4
MFR Model# 10650-4
Part NumberODBore


The ACS bearing regreasers restore bearings, rod ends and pulleys to like-new condition. O-ring in base of regreaser provides positive seal when bearing is secured by the threaded center post. Grease, entering under pressure at the grease fitting, is forced to flow through the bearing, flushing out the old grease and dirt, and recharging the bearing with fresh grease. Available in five sizes.


Made in USA
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WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


It works very well

Mark Z Verified Purchase


February 10, 2022

Worked great for greasing my aileron bearings. It needed a slight modification for clearance but did its job well. Well worth the cost.

Dennis O
April 12, 2020

Great piece of tooling, now well made

Rory H
April 1, 2017


Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does this work for non-sealed as well as sealed bearings as demonstrated in the EAA video?

These regreasers work just like the video. As long as there is some opening in the bearing, the pressure from the grease gun will push the old grease out, as it pushes the fresh grease in.

Q: What are the Part numbers for the O-rings in the complete set P/N:12-11500?

#8 O-ring P/N: 10650-8
#6 O-ring P/N: 10650-6
#5 O-ring P/N: 10650-5
#4 O-ring P/N: 10650-4
#3 O-ring P/N: 10650-3

Q: Which grease would be best for repacking MS24566 pulley bearings?

You would use grease conforming to MIL-PRF-81322 or MIL-PRF-23827. Mobil 28 would be a good option.