Member postings for AJAX

Standard cable ties (non heat resistant) made from 66 nylon are suitable for use up to 85 degrees C. I would remove those ties and use string sprayed with conformal coating, or use heat resistant ties instead. You won't know what is happening inside the motor until it fails.

You've done a great job there, Pete. Makes mine look rough by comparison but then again at least I'm not afraid to use it. The back gear came in handy when I had to drill and tap lots of holes last week.

For anyone considering one, these are very nice drills. I've always assumed they would be on a par with Meddings but I happened to pick up a Meddings drill recently and it's yet to be seen which one I keep.

Me too, but now I've checked the Aciera 22 drilling machine web page I feel short-changed by having only the tool holder! They look very nice machines.

Well done, Hans!

This page shows an example tool holder

http://lathes.co.uk/aciera22/page2.html

Thanks. But unless someone has a use for this taper it will be removed and replaced with a straight shank.

None that I am aware of. I will post an update if I see any.

Now you've mentioned it, I think you're right. Many thanks.

I have a "thing" that most probably belonged to a larger thing. Some parts bear a similarity to those found on a scribing block or indicator stand. I'd be most interested to know what the indexed conical part is for.

The dovetail and gib strip has a very smooth fit. It appears to be well made.

I've taken apart quite a lot of single and three phase motors, but I don't claim to be an expert. As the data plate states this can be wired for 220v or 380v operation then it should be possible to change some links somewhere. I suspect if you open the motor up you'll find links behind the wiring box. If so, you should be able to wire for delta operation.

As an aside, here are two good books you may find useful.

Electric motors (16) and electric motors in the home workshop (24) in the workshop practice series.

Perhaps it is a universal motor, but being sold as a DC motor? Greenmaster doesn't appear to be a brand or manufacturer with any data sheets.

If after this escapade you wish to continue with DC motors but keep your costs low, I recommend looking around for a used / spares only treadmill on Facebook marketplace. They are frequently available for very little money, sometimes free. I suggest keeping the running belt as it can be repurposed for many tasks.

Best of luck, Brian

The motor is rated for 4000 RPM and I'd guess that may be a bigger problem. Or do mini mills have significant reduction by the way of pulleys or gears? I have no experience using one.

We aren't allowed to laser cut PVC at work due to the toxic fumes this releases. At home I've CNC machined panels in pvc electrical enclosures with no problems at 8000 RPM

Adam,

I need to examine and possibly repair the gearbox of a meddings M5. Before I remove the top plate, could you possibly share that exploded parts diagram and any further useful information you may have? Many thanks, Brian

Almost forgot, I sold a bench mounted startrite drill last year. Single phase and probably very similar in build quality and performance to the Meddings. I paid £60. Sold on at a profit, but nothing like £700!!

I bought some cheap mops from eBay or Ali express and was able to mount them directly to the grinder spindle using the existing nuts. Quality was good. I may have turned some washers/spacers to provide a good clamping force. The only drawback of this method (as opposed to tapered spindles) is the mops are more difficult to swap over, if that's what you need to do.

I have previously bought some tapered spindles online from a UK supplier (manufactured in India) and they were absolute junk. Supplier name *roops *ros if you wish to avoid them.

As an aside, I just noticed you are running a Tuscan flame proof motor. I saw one of these for sale cheaply not long ago but was put off by thoughts of sealing/heating, although maybe they are not so different from TEFC motors. Do you find it works well for you?

I'm rather late to this thread, and this may have already been discussed, but that intermediate stepped pulley on the countershaft looks like it may be too big. If be tempted to try a smaller pulley if you have one.

Otherwise, as you already realise, a VFD may be a good option. I chose a VFD and 8 pole 3 phase motor for my horizontal mill as these motors have plenty of torque at low speeds (680 rpm at 50hz).

I have a vintage Rohm that works fine.

I used to have a bench mounted pillar drill fitted with a keyless chuck purchased on Ali express. It was good for the price (probably £20 ish)