Steve@Advance
Well-known Member
Anyone worked on an electro magnetic chuck?
This is on a surface grinder. Works on 115 vdc.
I had to take it apart to replace the power cord. It is run through a hole in the side of the base, sealed with a clear shellac looking sealer.
The entire base appears to have been sealed with this clear sealer. There are 2 sets of windings, they just lay in the base. When the top was put on, some of the sealer came in contact with the cloth insulation on the windings. When I took the top off, it pulled some of the insulation off of the windings. The wire appears to be intact, they both ohmed out the same, so I thing they are OK internally.
The insulation appears to be just a canvas looking material, wrapped, but not sealed to the wire. I'm thinking repair the damage with some cloth electric tape, if I can find any.
I also need to reseal the top back on, around all the bolts, and seal where the power cord enters. This is subject to being flooded with water base coolant, so everything must be sealed water proof.
I am thinking JB weld where the cord enters, as there is no strain relief, just a hole drilled through the base, about 1/2" thick. And it gets a real workout as the table moves back and forth. I may drill and tap that and add a strain relief, think that would be a plus.
Any idea what the sealer is? I don't want to use epoxy, I would never get it apart again. Silicone?
What about the cloth tape? Good,bad, alternatives?
Thanks!
This is on a surface grinder. Works on 115 vdc.
I had to take it apart to replace the power cord. It is run through a hole in the side of the base, sealed with a clear shellac looking sealer.
The entire base appears to have been sealed with this clear sealer. There are 2 sets of windings, they just lay in the base. When the top was put on, some of the sealer came in contact with the cloth insulation on the windings. When I took the top off, it pulled some of the insulation off of the windings. The wire appears to be intact, they both ohmed out the same, so I thing they are OK internally.
The insulation appears to be just a canvas looking material, wrapped, but not sealed to the wire. I'm thinking repair the damage with some cloth electric tape, if I can find any.
I also need to reseal the top back on, around all the bolts, and seal where the power cord enters. This is subject to being flooded with water base coolant, so everything must be sealed water proof.
I am thinking JB weld where the cord enters, as there is no strain relief, just a hole drilled through the base, about 1/2" thick. And it gets a real workout as the table moves back and forth. I may drill and tap that and add a strain relief, think that would be a plus.
Any idea what the sealer is? I don't want to use epoxy, I would never get it apart again. Silicone?
What about the cloth tape? Good,bad, alternatives?
Thanks!