Roller Swaging
Roller Swaging
(OP)
I have a part that requires two bushings and a spherical bearing to be roller swaged into the body of the part. BAC5435 is the Boeing roller swaging spec but I don’t have access to it and can’t spec it out on my drawing. Therefore, I am looking for a MIL, AMS, AS, or other commercially available equivalent to BAC5435. Does anyone know of such a spec?
Thanks for the help.
Thanks for the help.





RE: Roller Swaging
http://www.primusint.com/aboutusd.html
RE: Roller Swaging
(a) Download MIL-STD-1599 and MIL-HDBK-1599 from the following website:
http://assist.daps.dla.mil/quicksearch/
(Type 1599 as the Document Number and click search)
(b) Roller swage tools can be purchased from:
http://www.cabcoindustries.com/housing.php
(c) Contact Boeing to determine if these military documents will satisfy BAC5435 quality requirements.
Good Luck!
RE: Roller Swaging
RE: Roller Swaging
MIL-STD-1599 was REPLACED BY the newer MIL-HDBK-1599.
Check with Boeing or your DAR whether the HANDBOOK is acceptable..
Cheers,
RE: Roller Swaging
RE: Roller Swaging
also a bit surprised that the FAA is making you use a spec. surely post-op inspection would show that the sheet hasn't been overly thinned ? is the part primary structure, or a fairing ? if "they" are forcing down this path, can they show you the conclusion ? (ie do they have a spec in mind ?)
yahoo turned up these guys ... http://www.royell.com/assembly.html ... maybe they can help
RE: Roller Swaging
RE: Roller Swaging
RE: Roller Swaging
A decade ago, when I worked at Boeing Canada, we manufactured a wide range of aircraft parts and assemblies. These included roller swaged assemblies of bearings per BAC 5435...but also line/ring staking of bearings.
As an MRB Engineer, the biggest snags were with the tolerances on the bearing bores, finishes and groove geometry, as this is what keeps the bearing secured inside the housing. When we reworked discrepant parts, we often performed a bearing retention "push-out" test, to satisfy the drawing/bearing load requirements.
Apart from MIL-HDBK-1599, there are no other publically available standards that I can suggest for roller swaging retention. However, many MS, NAS and AS standards will list the bearing static and dynamic load ratings, and some will describe how to perform quality acceptance tests.
Exercise caution if you are dealing with helicopter dynamic components, where the fatigue characteristics of components can be highly dependent on small deviations in quality...
RE: Roller Swaging
Thanks. We don't go after helicopter parts largely for that reason.
RE: Roller Swaging
Take a look at NAS0331 Bearing Installation and Retention by Swaging or Staking
Also... If You can find a copy... refer to USAF T.O. 44B-1-2 GENERAL MAINTENANCE INSTRUCTIONS - AIRFRAME ANTIFRICTION BEARINGS
Regards, Wil Taylor
RE: Roller Swaging