Author Topic: New member with a BCA  (Read 1024 times)

Offline pgp001

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Re: New member with a BCA
« Reply #15 on: March 21, 2020, 06:59:58 PM »
Just for information for anyone who may not know.............

There were collets made for the BCA that have an internal thread to suit Clarkson milling cutters. They come in sizes 1/4", 3/8", 6mm & 10mm and are essential if you want to ensure your milling cutters do not "walk" out of the collet when cutting.

I luckily managed to eventually find all of the above for my own set, but it took about three years and a lot of wallet strain  :ThumbsDown:

Making your own is not that hard however.

Phi

Offline Rod999

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Re: New member with a BCA
« Reply #16 on: March 21, 2020, 09:12:53 PM »
        I've seen Tenga's list of collets, and I bought some of RDG's machinable end type and found it too hard just a short way in, as I was drilling it for a 1/4" end mill. I have a 3/8" collet with the internal thread which is bad, in that you can see the end mill wiggle when running. So, with that said, when using good tooling it is a wonderful machine.
        My extra fun is that brand new Acra lathe, still just cleaning, adjusting, and getting accustom to it.

Offline IanF

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Re: New member with a BCA
« Reply #17 on: March 21, 2020, 09:51:12 PM »
Just for information for anyone who may not know.............

There were collets made for the BCA that have an internal thread to suit Clarkson milling cutters. They come in sizes 1/4", 3/8", 6mm & 10mm and are essential if you want to ensure your milling cutters do not "walk" out of the collet when cutting.

I luckily managed to eventually find all of the above for my own set, but it took about three years and a lot of wallet strain  :ThumbsDown:

Making your own is not that hard however.

Phi

I made sure before purchasing that it had a decent set of collets. Luckily it does have the full set - 11 normal collets in 1/32 graduations from 1/16 - 3/8 as well as the two Clarkson collets for 1/4 and 3/8. Some metric ones would be great but the Aussie dollar is in free fall at the moment so any overseas purchase is unlikely for me in the near future!

Offline IanF

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Re: New member with a BCA
« Reply #18 on: March 22, 2020, 06:35:57 AM »
ok so here she is.... I have no idea why the image is sideways but Iíll try and work on image posting.

Edit Jo: turned Photo  ;)
« Last Edit: March 22, 2020, 06:49:53 AM by Jo »

Offline IanF

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Re: New member with a BCA
« Reply #19 on: March 22, 2020, 06:59:13 AM »
Some pics of the bits and pieces that came with the BCA

Collets, number 0 and number 1 boring heads (I donít even know what tooling to buy for these) and what is the item between the boring heads and Clarkson type collets?

Clamps etc also with interesting grease gun (I think)

Measuring bar set

And a box that has hand written in front ďExt work edge barĒ that I havenít worked out yet.

Offline IanF

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Re: New member with a BCA
« Reply #20 on: March 22, 2020, 07:28:09 AM »
And now a wiring question if anyone may be able to help please. Wiring between the motor and switch has been disconnected but all looks straight forward to reconnect as it is labeled and I have a wiring diagram. All is original 2 speed 3 phase motor with isolation switch in the cabinet. The 3 phases come to the switch with 4 wires, one for each phase and an earth. The earth has no obvious position on the switch. Would any of you guys with a BCA be able to take a photo of the back of your switch please if you have the original 2 speed switch or can you see where the earth is being connected to?

Offline astroud

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Re: New member with a BCA
« Reply #21 on: March 22, 2020, 09:30:22 AM »
Sorry mine has a siingle phase motor and starter, the 2 speed switch is not used and has no wiring to it.

The item between the collets and boring head looks like part of Centre Locator (wobbler) but missing the probe. The item in the box is an Extension Work Edge  Bar for supporting longer work items that overhang the table. Both are shown and described in the Operating Service Manual, available from lathes.co.uk.

Andrew

Online Twizseven

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Re: New member with a BCA
« Reply #22 on: March 22, 2020, 09:51:18 AM »
Thatís a lovely selection of bits with that machine.
Have fun with it.
Colin

Offline IanF

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Re: New member with a BCA
« Reply #23 on: March 25, 2020, 01:35:30 AM »
Thanks Colin and Andrew

I have successfully wired up now and seems to be running well. I just need to connect the work light and start practicing with the machine.

Does anyone have a picture they could share with a dial indicator setup in use with the measuring rods? I know DRO is the way forward but I am interested to see some pics as I have the rods and at least one dial indicator.

Oh and in relation to greasing - what type of grease are you BCA users using on yours?

Ian

Offline Mcgyver

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Re: New member with a BCA
« Reply #24 on: March 25, 2020, 01:21:21 PM »
Unless its some really specific thing and you are directed to by a manual, never ever ever grease a machine tool.  If you have greased it, take it apart and clean it.  Oil is what it wants.  All too often a newb (once upon a time I did it) will see all those zerks and have at it with a grease gun.....No!  The grease hangs around, picks up crud and becomes like a lapping paste.  Those zerks are for oil.

On the same theme, way lubrication on a BCA misses the mark imo.  Much as I like the BCA and I do think its a high quality machine, this is a common complaint with many small machines.   Every bearing surface you don't want to wear away needs to regularly get lots of oil into it, ideally under pressure to flush out the old.   I like to add zerks and oil passages to my machines when they're present from the factory.  Likely few do this and their machines still work, but its a step in the right direction for longevity and performance.  Fortunately my BCA didn't need a reconditioning, original scraping marks present, but I did go through and mill oil grooves and dill passages to make for better lubrication to help keep it that way.


« Last Edit: March 25, 2020, 04:16:21 PM by Mcgyver »

Offline Rod999

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Re: New member with a BCA
« Reply #25 on: March 25, 2020, 01:25:44 PM »
              My machine came with an oil gun that doesn't work very well, but leaks much better. Is there a quality item out there, that's known to do the job well, without making a mess when I'm not looking?

Offline Mcgyver

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Re: New member with a BCA
« Reply #26 on: March 25, 2020, 01:56:04 PM »
              My machine came with an oil gun that doesn't work very well, but leaks much better. Is there a quality item out there, that's known to do the job well, without making a mess when I'm not looking?

maybe the nicest is the Abnox oil pump, what Schaublin uses, Swiss made....they fit the doomed style oilers.  (all my English machines seem to have these, for NA made, zerks are the norm)  Still saving my pennies for a new one.  For zerks, you can modify a grease gun as shown - bit of AL loctited into the end of a grease gun, threaded with a filling cap and O ring.  I confess it is not entirely leak proof....probably needs a higher quality pump end than you get with a cheapo grease gun

« Last Edit: March 25, 2020, 04:17:02 PM by Mcgyver »

Offline nj111

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Re: New member with a BCA
« Reply #27 on: March 25, 2020, 05:32:25 PM »
Most oil guns will leak - I found they are best stored upside down.  Prior to Myford closing down their oil guns were really excellent (back in the 1990's) if you can find one! Used to buy them for oiling the spindle bearings on our CNC routers at work which required quite a light oil (ISO 32) and they never leaked.
Nick

Offline IanF

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Re: New member with a BCA
« Reply #28 on: March 25, 2020, 06:54:41 PM »
Thanks for the comments re lubrication. I have not lubed anything yet and have often heard the comment not to use grease in a lot of workshop machines even when some fittings look like grease nipples. I found this table from a BCA manual but Iím not sure I am clearer on this now. Iím going to have to retook at what I thought was a grease gun that came with the machine - maybe it is an oil gun....


Offline Mcgyver

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Re: New member with a BCA
« Reply #29 on: March 25, 2020, 08:35:39 PM »
Thanks for the comments re lubrication. I have not lubed anything yet and have often heard the comment not to use grease in a lot of workshop machines even when some fittings look like grease nipples. I found this table from a BCA manual

well, there you have it, sure contradicts what I said.  Regardless, I wouldn't use grease on ways, I've seen the damage and I think there'd be close to universal agreement among those who rebuild machine tools, and for that matter in every other machine manual i've gone through. 
« Last Edit: March 25, 2020, 08:53:19 PM by Mcgyver »