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    Double Disk - Vertical?

    We have several Double Disc Grinders with horizontal spindles, and one like this with vertical spindles. Ours has coolant that runs through the spindle. We really only used it for one job since I have worked here. We were grinding small washers to a specific thickness for a customer. The...
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    Vacuum Chuck on a Blanchard?

    Thanks for the advice. I was also worried about a vacuum chuck having enough holding power on a Blanchard. And drilling a hole through the chuck couldn't be a good idea, I just couldn't wrap my brain around another way to do it. I think I'm gonna try and talk the boss out of this idea. Currently...
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    Vacuum Chuck on a Blanchard?

    I work for a small machine shop that specializes in precision grinding. We have several rotary grinders (Blanchards), double disc grinders, and one large surface grinder. Our owner has recently expressed interest in vacuum chucks for the non-ferrous materials we grind, and tasked me with doing...
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    32-60 Blanchard Spindle Motor Weight

    Thanks for your input. Just to give you a little background, this issue has been on going since before I started working here two years ago. When the machine is under a load, the motor starts to bog down. So the operator has to run a slower feed rate when running large pieces. Back in 2017...
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    32-60 Blanchard Spindle Motor Weight

    Hello, We are starting a project on one of our old Blanchard 32-60 Rotary Surface Grinders. We need to remove the main spindle motor to send it in to a motor shop for evaluation. Does anyone have an idea of the approximate weight of the entire spindle motor assembly? By that I mean the entire...
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    Blanchard 32-60 Spindle Heating Up

    Thanks Guys, I guy from FP Miller got back to me yesterday afternoon with some helpful information. He told me that the heat we are seeing is well within the acceptable range. The highest I saw was 167 F. He said not to get worried unless we are seeing temperatures of 200 or more. He mentioned...
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    Blanchard 32-60 Spindle Heating Up

    Thanks Milland, I just ordered a mechanics stethoscope. I've always used the "screwdriver to ear" method, but I don't want to lean in there when the spindle is running.
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    Blanchard 32-60 Spindle Heating Up

    Hi Guys, Since you were so helpful with my first post on this forum I figured I would try again. On one of our 32-60 Blanchard grinders, the operator has noticed that the machine is running hotter than what he is used to. It seems to be getting hot near the lower spindle bearing area. The...
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    Mattison Surface Grinder - Suddenly getting a chatter pattern.

    I was worried about the stability from the beginning. Quite honestly I was a little surprised it worked good when I installed it initially. It did seem to work for about 10 months though. I've got it on my work bench now for inspection, but I've got my hands in a few other machines at the moment.
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    Mattison Surface Grinder - Suddenly getting a chatter pattern.

    Thanks everyone, I just wanted to fill you in that we did not solve the issue as I stated in my last post, but we've got it working now. When we did another test in the morning we still saw a very light pattern in the finish. It was hard to even get it to show up in a picture, but it was there...
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    Mattison Surface Grinder - Suddenly getting a chatter pattern.

    Thanks again Guys, Your advice is much appreciated. I think we have it fixed. As I mentioned in my second post, I noticed the threads in the wheel sleeve we beat up. I cleaned them out and also got some longer bolts so we were grabbing in the good threads deeper in the hole. We used the same...
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    Mattison Surface Grinder - Suddenly getting a chatter pattern.

    Thanks Guys, I did not get a picture of the parts with the bad finish, he had fixed them on another grinder before I got the chance. We are going to put the wheel back on and try again. I think you guys may be onto something with the loose wheel suggestion. As I was cleaning things up I...
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    Mattison Surface Grinder - Suddenly getting a chatter pattern.

    Hi Folks, This is my first post on this forum, thanks in advance for any help you can give. I am in charge of maintenance at a machine shop that specializes in precision grinding. I used to build new machinery for the textile industry, so maintenance on this type of machinery is fairly new to...

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