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Aurora Bearing Mm-4

$10.75/Each
Part# MM-4
MFR Model# MM-4
PNHeim Equivalent PNThread TypeThread Size
MM-4HM-4Male1/4-28

Overview

In 1971 Aurora Bearing Company entered the rod end and spherical bearing market and soon became a major force in the rod end industry. Over the years, Aurora Bearing has retained its original business philosophy of furnishing a quality product at competitive prices and with service much faster than the competition. Aurora offers a complete line of standard and spherical bearings. In addition, special bearings can be designed and manufactured on request. Listed below are many of the most popular Heim bearing part numbers and the equivalent Aurora Bearing part number. On many of these items, the Aurora bearing offers substantial savings and faster delivery time. Unlisted Aurora bearings, quantity discounts and complete Aurora Bearing Company brochure available on request.

The below specifications apply to most but not all Aurora bearings. Note: Bearings not furnished standard with grease fittings are available with grease fittings. Add suffix "Z".

AURORA EQUlVALENTS TO HEIM HM, HF, HMX, HFX, HMR, AND HFR SERIES
   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Specifications

  • Body - Low carbon steel, cadmium or zinc plated at manufacturer's option, dichromate treated. No. 16 series standard body is 4130 steel, not heat treated.
  • Race - Low carbon steel, cadmium or zinc plated (manufacturer's option), chromate treated.
  • Ball - Allow steel, heat treated, hard chrome plated.

Reviews

Good stuff :)

Robert M Verified Purchase

Aurora Bearing Mm-4

December 1, 2023

Price, quality snd wuick

Frederic C Verified Purchase

Aurora Bearing Mm-4

April 14, 2023

Perfect

Sport I Verified Purchase

Aurora Bearing Mm-4

October 14, 2022

Aurora Bearings are the best no questions asked...

Lewis M Verified Purchase

Aurora Bearing Mm-4

January 25, 2022

Good

Don M Verified Purchase

Aurora Bearing Mm-4

January 21, 2022

Excellent product great ship time.

Chuck
November 7, 2020

Just what I needed, promptly delivered.

Stephen B
May 17, 2020

Exactly as advertised and works perfectly. Order chart could us another column to indicate which is left or right handed more clearly.

Stephen S
February 24, 2020

GREAT

Gary C
February 6, 2020

Exact replacement for my rod end bearing used on Vans flap control rod.

Rich
November 30, 2019

Q&A

Please note, Aircraft Spruce'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. Aircraft Spruce 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: How do you tell the difference between the male threaded end and the female internal threaded end for these Aurora bearings? I am a Sonex builder and need the female parts to thread onto the male rod ends for the ailerons and flaps.

We have added a column to the product table which calls out male or female thread. Please review it on the web page.

Q: What is the thread diameter (in inches) of P/N MM-2?

.1380-32 UNC thread

Q: Do these come with locknuts?

No the nuts are not included.

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