[TheForge] air hammer

[Peter Fels & Phoebe Palmer]

An addendum; Converting a 3 ph to single phase looses about 1/3 of the 
power. There's a good argument for using jack shafts, pullys and belts 
to get the right RPM and HP with an inexpensive 1 Ph motor..pf

ries wrote:
> 25lb and 50lb little giants can be run on small, single phase motors.
> Of the chinese (Striker, Anyang) or the Turkish (Saymak, Sahinler) or 
> even German hammers- most smaller ones can be ordered with single phase 
> motors- it usually costs $500 or so more, and is usually only available 
> up to about 5hp.
> Beyond 5hp, almost everything is 3phase, but you can buy either a VFD 
> system, or a rotary phase converter, to run a 3 phase motor on single 
> phase.
> Of course, it costs more.
> The old american self contained, like Nazel and Chambersburg are all 3 
> phase originally, and most are too big to be run on single phase motors, 
> but can be used with phase converters.
> 
> Another option would be Utility hammers- these are air hammers that are 
> single cylinder, and need an air compressor.
> Like the Iron Kiss, or the Big Blu, or many homemade models- they can 
> often run on a 5hp compressor, as long as you are not trying to run them 
> continuously.
> Or you can gang two or more small single phase compressors.
> 
> Big motors are almost always 3 phase, as its cheaper and more efficient 
> to build em and run em.
> 
> Ries
> 
> 
> On Nov 3, 2008, at 3:05 PM, Fred Zickrick wrote:
> 
> Are any of the better quality hammers available with single phase 
> motors?  I know they'll be smaller but single is all I'll have for quite 
> awhile.
> 
> Thank you,
> Fred Zickrick, fredz72 at cableone.net
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> Ries Niemi
> Industrial Artist
> http://www.riesniemi.com/
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