Chronos kit.

Oct 31, 2007 9 Replies

Just taken delivery of one of the Shoba 6 inch rotary table kits, with the extras, indexer, centre, etc etc, and a few other bits and pieces from Chronos...


1/ Obviously haven't had a chance to use it in anger yet.


2/ pre-sale email enquiries were answered promptly.


3/ a big plus for me, not plastic only, they were quite happy to take a cheque in the post.


4/ time from posting cheque and order to parcel arriving was very short.


5/ parcel extremely well wrapped, several layers of extremely good wrapping in fact, good padding, and when you get down to the chunks of metal all nicely oiled and sealed in plastic.


6/ the rotary table itself is extremely well made for the money, there is about 4 minutes of backlash in the worm gear, but this is even throughout the revolutions of the table, and backlash is over rated as a problem, lazy machinists who don't like to measure enough dislike backlash.


7/ the table is nice and solid, apart from the backlash can't fault it, and it entirely justifies me taking a gamble on an obviously cheap new table vs an old second hand quality table via ebay with unknown issues and wear, nota bene, uneven wear on an old table will be more of an issue than even backlash on a new one.


8/ as i said above, included for 120 odd quid are indexing plates, tailstock, and even a decent little set of hold down bolts and clamps for use with the table, that's about two hours labour at a commercial garage rates.



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item ref SOB1 (lol)



No connection with them, but (unlike some others I could name) a pleasure to deal with, excellent value for money, and certain to be getting more of my money (unlike some others I could name) and as their website does not allow feedback like Axminster etc I have chosen to leave it here in the hope that others who may be dithering have a little more info about the vendors out there and the products they sell.



cheers



Just taken delivery of one of the Shoba 6 inch rotary table kits, with the extras, indexer, centre, etc etc, and a few other bits and pieces from Chronos...

1/ Obviously haven't had a chance to use it in anger yet.

2/ pre-sale email enquiries were answered promptly.

3/ a big plus for me, not plastic only, they were quite happy to take a cheque in the post.

4/ time from posting cheque and order to parcel arriving was very short.

5/ parcel extremely well wrapped, several layers of extremely good wrapping in fact, good padding, and when you get down to the chunks of metal all nicely oiled and sealed in plastic.

6/ the rotary table itself is extremely well made for the money, there is about 4 minutes of backlash in the worm gear, but this is even throughout the revolutions of the table, and backlash is over rated as a problem, lazy machinists who don't like to measure enough dislike backlash.

7/ the table is nice and solid, apart from the backlash can't fault it, and it entirely justifies me taking a gamble on an obviously cheap new table vs an old second hand quality table via ebay with unknown issues and wear, nota bene, uneven wear on an old table will be more of an issue than even backlash on a new one.

8/ as i said above, included for 120 odd quid are indexing plates, tailstock, and even a decent little set of hold down bolts and clamps for use with the table, that's about two hours labour at a commercial garage rates.

formatting link
item ref SOB1 (lol)

No connection with them, but (unlike some others I could name) a pleasure to deal with, excellent value for money, and certain to be getting more of my money (unlike some others I could name) and as their website does not allow feedback like Axminster etc I have chosen to leave it here in the hope that others who may be dithering have a little more info about the vendors out there and the products they sell.

cheers

"Guy Fawkes" schreef in bericht news: snipped-for-privacy@v3g2000hsg.googlegroups.com...

Indeed, not bad at all. Pity one has to live close to a dealer. Shipping is hardly an option. What did they charge for P&P? Dirk

nothing, included in the price, just like it says on the website...

Yabut one must assume that our friend PG1D/PA-11Ø12 is in the Netherlands I would imagine that the postage would be an extra £24 if one assumes the price was the same as France, Germany, Belgium etc. and that the weight was less than 30kg.

Might still be acceptable?

Mark Rand RTFM

Hi Guy, All that backlash can be adjusted, end float also depth of mesh. Ben

>

yeah, sort of, but I was meaning that backlash / worm mesh aren't adjustable, built in, part of the table design like it might be on a more expensive table...

having said that, 4 minutes is 0.0655etc degrees, a 6 inch (dia) table has a circumference of 18.84 inches, that's 52 thou per degree, so backlash is about 3 thou at the circumference, worst case scenario. WITHOUT DOING ANY COMPENSATION...

bottom line here is backlash exists in everything, all you need is a sensetive enough measuring tool, and machining isn't about setting things up by the dials on machines, it is about measuring and allowing for everything... most people buying these things prolly have a 2mt head which ain't the most rigid thing on the planet anyway, and all you have to do is measure properly then rotate the same way instead of going backwards and forwards to eliminate the backlash.

I'll say it again, the overall accuracy and quality of this kit is quite incredible for the money

On or around Wed, 31 Oct 2007 12:00:07 -0700, Guy Fawkes enlightened us thusly:

I've got a keyless chuck form 'em, and it's nice.

only thing about it, nothing to do with the quality, is that it won't drive anticlockwise, 'cos it loosens itself. which means I can't use it to hold a left-hand die in a die-holder.

In article , Guy Fawkes writes

Guy,

Glad you are happy. I too have always found Chronos good to deal with, and the quality of the equipment always at least satisfactory, and mostly excellent. Was just thinking of buying a new vice from them, so your report is most welcome.

David

If you look to the rear of the handwheel on the base casting, right hand side you will find a 4mm grub screw, screwing this out allows the lever that puts it in and out of mesh to travel further, best take it all to bits and give it a good clean while your at it. I have five of these going all day long, so far they have lasted for 10 months with no problems. Regards. Ben

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