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Bill,

You might find this of interest: https://www.cm-spindle.com/spindle-services/spindle-upgrades/3-pack-5-pack-6-pack-upgrades/

I was surprised to find that BP used normal deep groove ball...

I bought a Harbor Freight Vibratory Tumbler. It fell way short of expectations so I applied a little simple physics and I now have a great Tumbler. In production it would have cost no more to...

Simply because 15 years ago I got it for a single task. In fact i doubt that the 400 Hz spindles were readily available then. Even if they were, I hadn't heard of them and didn't need one anyway.
...

The wire insulation shows no sign of damage so I am hopeful. My unit will only see occasional use. Monthly rather than daily.



Yes I understand that but for testing it is the max frequency...

Very strange. That would be more understandable if the ones on the US eBay were 110 v not 220 but they are not.
Maybe stranger is that I bought mine off US eBay on a trip to the US and it has 3...

That just isn't true. This was the first item from my eBay search for a 2,2 kW spindle, just now.

AIR-COOLED 80MM 2.2KW ER20 COLLET SPINDLE MOTOR AND MATCHING INVERTER VFD CNC | eBay

Many/most of these spindles come with a 3 pin plug, probably because they expect the case to be earthed via the machine to which it is fixed. To keep it simple you could run a 4 core cable and just...

I have just had to strip my identical one for a very similar reason. I had been running my mill with it set to 40 Hz with a max. of 60 Hz and I forgot to set the max. to 400. However, I got to the...

It was post 79. What are the shipping arrangements and costs for Europe?

No answers???

What are the shipping arrangements and costs for Europe?

The most important thing to do with a VFD is to read the manual carefully. There are warning, like the above, but they have many programming options such as acceleration time, max frequency and many...

I have been using a VFD with 3ph motor up to now, but I am changing to a fixed belt ratio at the same time as increasing the spindle speed to 6000rpm, and I will be trying a DC motor. I have a...

Al,

I agree completely, but I am fitting a brake for those times when I want to hold the spindle still and for real emergencies.

mactec54,

Many thanks, that new photo makes it very clear. The brake is very neatly done. I was planning on something similar using a motor cycle brake caliper. I'll be losing the original drum...

Mactec54,

I am sure that you can answer this from your experience.
The stock machine has a lot of inertia on the spindle. A steel back gear and the vari-pulleys add up to quite a bit.
I can see...

Thanks again. Very useful info.
I guess that you have got rid of the R8 collets?

many thanks. That looks like a nice conversion. A poly-V belt is what it will be then. A couple more questions.
Do you retain the backgears to increase low speed torque?
What RPM motor do you...

I am planning on replacing the variable speed pulley pulley system with a fixed ratio toothed belt drive. Primarily to raise the spindle speed and quieten the drive. Speed control will be with a...

Regular series 1 with the longer table.

Al,
Thanks, that is pretty much what I thought. As I happen to have 2 sets of everything as spares (motors, amps) I am reluctant to look for new drives, at least for the moment. Apart from a bit...

Al,
Yes I know that but as far as I know my amps do not permit that. If you know differently then I am all ears. I have no docs. for the amps but they are Anilam Crusader II from the mid 1980s...

Battwell,

You largely answered your own question. I am new to Mach, in fact new to PC controller CNC, but I am sure that it is a capable piece of software otherwise it would not be so popular. ...

I am just setting up a Bridgeport, that had an old Anilam controller, with a new Galil card.
Does anyone have any idea of acceptable or typical maximum acceleration and deceleration settings for...

Has there been any progress on this topic since the last post, some years back? I have just converted an old (mid 1980s) Anilam system on a Bridgeport mill to a Galil 2143 controller. Short of a...