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Discussion Forum

Johnson air compressor

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09-01-1999 11:07:12

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I am rebuilding an old Johnson Silent Drive Air Compressor, type 4 x 4A, serial #144, would anyone know where I could get info on what speed it should run and anything else that might be helpful.Thanks

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Jaime Suzanne Gutierrez

12-04-2000 17:56:19

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 Re: Johnson air compressor in reply to Jim, 09-01-1999 11:07:12  
A 4 X 4 compressor is a single stage unit that
will get "very hot" if it runs at higher than design speed. Bear that in mind. I do not design
compressors but have been in marketing sales and
service of all types of air compressors. I would
say that it should run about 800 to a max 1100
rpm. Good luck!!

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Larry Hart

06-12-2002 07:59:14

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 Re: Re: Johnson air compressor in reply to Jaime Suzanne Gutierrez, 12-04-2000 17:56:19  
Hello. I have a "never been used" johnson air compressor Model #152M , ser # SF-37. It is a aluminum housing diaphram type. My guess is that it is approx. 25-30 years old. I want to hook it up but need to know:

Max pressure, rpm, horsepower needed, and if and where spare parts are available.

Local air compressor repair places have never heard of this manufacturer.

I will be using this unit for a air supply for my airbrush painting, filling tires, etc.

Thank you for any help.

Larry Hart

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