Are bridgeport heads interchangeable?
For example, can I swap a step pulleyed head, for a variable speed
head? Are the mounting arrangements the same? -- Due to extreme spam originating from Google Groups, and their inattention to spammers, I and many others block all articles originating from Google Groups. If you want your postings to be seen by more readers you will need to find a different means of posting on Usenet. http://improve-usenet.org/ |
Are bridgeport heads interchangeable?
In general, yes. There's a company near me (western Wisconsin) that
rebuilds and sells Bridgeports all the time. They never ship a J-head out, they always update it to a variable speed drive. I don't think this applies to the M-head though. FWIW, the last time I was there in person (a couple of years ago) they had a whole pallet full of those J-heads. Maybe they part 'em out when they repair machines for others. Pete Stanaitis -------------------- Ignoramus18195 wrote: For example, can I swap a step pulleyed head, for a variable speed head? Are the mounting arrangements the same? |
Are bridgeport heads interchangeable?
"spaco" wrote in message .. . In general, yes. There's a company near me (western Wisconsin) that rebuilds and sells Bridgeports all the time. They never ship a J-head out, they always update it to a variable speed drive. I don't think this applies to the M-head though. FWIW, the last time I was there in person (a couple of years ago) they had a whole pallet full of those J-heads. Maybe they part 'em out when they repair machines for others. Pete Stanaitis -------------------- Ignoramus18195 wrote: For example, can I swap a step pulleyed head, for a variable speed head? Are the mounting arrangements the same? An "M" head will need an adapter. |
Are bridgeport heads interchangeable?
Ignoramus18195 wrote:
For example, can I swap a step pulleyed head, for a variable speed head? Are the mounting arrangements the same? 1J (step pulley) and 2J (varispeed) are interchangeable, in fact the main casting is identical. The ancient M head is NOT the same, however, a much smaller bolt circle. As long as it is a V-ram or rigid ram machine, it would be unlikely to have an M head. The 1J has 4 belt speeds and a geared low range, with a toothed reduction belt below the vee belt. It also has power down-feed with a 3-speed selector. The M head has 6 speeds, no back gear and no power quill feed. One other thing, various J heads have different spindle tapers, mostly your choice of R-8, NMTB 30 or a couple quick-switch systems. There are the 3J and 4J heads on Series-II machines, definitely NOT interchangeable with 1- and 2J. (Note, Series-II tracers and multi-spindle machines often had several 2J heads on them.) There are also BOSS heads which have a coaxial ballscrew machined into the quill. These are CNC-only, no provision for normal manual quill feed. Jon |
All times are GMT +1. The time now is 03:38 PM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter