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Well, twas just a thought as I had a half a dozen cartridges that else just go to the garbage. I thought printer cartridges just contained carbon powder but I read up on the subject and the part with...

Making it black and not much else is fine with me if it does not make it weaker.

Fiberglass filler might be an option, but doubles? the cost of the EG, so it would have to be somehow motivated,...

Thanks I looked at the Cabot web site and it says:

I really do not know what is in lazer toner cartridges, carbon black, graphite or whatever.
The link for the datasheet for Monarc is 404 at the...

Does anyone know anything about adding carbon to EG? I have a bunch of toner casettes! and was thinkig of dying EG black with this. Did anyone attempt somethig like this? WIll it act like graphite...

Sand, don't know.

Beam: all depends on what load you will put on it.

Reinforcing: If it is the 2700mm long beam I would definitly reinforce it unless maybe, maybe not if it is supported all...

I assume it is not foam, but maybe something like this:
Resin System Description for (Rigid Polyurethane) RTP 2300 Series Thermoplastic Compounds - RTP Company
There is a lot of data, case studies...

I have not read the BIG thread more than here and there but imagine that EG should be drillable with diamond drills for small holes, core drills for larger ones. Or would the epoxy clog the drill?...

Hi, is that the spindle house?

20% by volume is lower than the numbers I have seen elsewhere, typically 12-14% by weight.

My best guess is that you should look for an epoxy that is
- low viscosity, ie as fluid as possible.
- very slow curing
- totally free of solvents

The hardness comes from using hard filler, ie...

I will have monitoring and auto-shutdown on both current and temperature just in case....

Perfect! Yes, looking in their catalogue, everything fits with the Perske KNS 61, even the weight! :banana:

It's rated 2.5kW 50Hz, 3kW at 60Hs, 4kW at 100Hz, and seems to be usable all the way up...

Some more pics.

House is 120x120mm cross section plus heat sink fins on two sides
Length 270mm without shaft, without fan
Shaft diameter 25mm in the front end, 20mm back end
Rotor diameter 60mm

I will run it via a VFD but it would be nice to know some ratings like maximum power / current. Can I figure something out by measuring winding inductance and resistance? It's permanently D-coupled...

I have this motor that I need to identify. It is not a servo motor but I could not find a better section here at CNCZ

There is no plate on it. I was giving it an overhaul and thought I'd find some...

Same situation as me, except I do not have the motor :-)

You can of course use a "proper" servo drive, or the same replies as below should apply?!

Thanks, I will take a look at the treadmill motors and drivers.

It is for a small tooling lathe, there is no exact specification. A lathe basically needs constant output power at variable speed ie torque in inversely proportional to speed (force and speed at the...

Thanks,

well, maybe the whole idea is not that good...

I did find some 3-pahse asynchone motors with servo-like power/diameter, like CEG-EM/L so that may be a better way.

I also found...

Hi, this is my first post here,

I am building a machine where I need an

- adjustable speed motor
- around 1.5kW power
- high torque at low speed
- small diameter

An approximate rpm...