[Amps] Centrifugal Blowers

[donroden at hiwaay.net]

On 2022-01-27 9:34 am, jim.thom jim.thom at telus.net wrote: have
replaceable bearings..as does the old  Rotron  CX-33, used on many FM 
broadcast stations.  The CX-33 is still rebuildable, even though out of 
production for years.

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Goodrich used to sell rebuilt CX-33s but they were $700 each.         I 
modified several by drilling out the housings where a punch could be 
used to tap out the old bearings.  This helped in 24/7 service but I 
suspect a 33 would outlast most of us in Amateur service.

W4DNR