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Replacing the broken bearings in my pm1440gs headstock
- Thread starter richl
- Start date
Good job on the plug. Gotta do what yah gotta do! You can easily make that. Remember bearing are getting replaced but be careful with that shaft. Sure u know that.
Disassemble to me looks like the shaft has to go in the direction of the smaller gearside first. Meaning take you slide hammer with the correct thread that goes in end of shaft. Get a grade 8 bolt or better. Make sure the bore where the cap was is smooth no burrs for the bearing to get hung up on. Acouple slides of the hammer should get the Assy moving. Having someone on the other end with a brass punch on the shaft as your doing the slide hammer might help if being stubborn. Make sure gears are messing when moving shaft so no binding there.
Once first side is hanging out of headstock you can use a 3jaw puller on pull off bearing. Bearing in headstock on other side can be driven out with a punch or use a expanding arbor on slide hammer in ID of bearing and pull out.
Install will talk once you get there tricky to do without hammer bearing but can be done using clamps and bushing drivers or spacers.
Disassemble to me looks like the shaft has to go in the direction of the smaller gearside first. Meaning take you slide hammer with the correct thread that goes in end of shaft. Get a grade 8 bolt or better. Make sure the bore where the cap was is smooth no burrs for the bearing to get hung up on. Acouple slides of the hammer should get the Assy moving. Having someone on the other end with a brass punch on the shaft as your doing the slide hammer might help if being stubborn. Make sure gears are messing when moving shaft so no binding there.
Once first side is hanging out of headstock you can use a 3jaw puller on pull off bearing. Bearing in headstock on other side can be driven out with a punch or use a expanding arbor on slide hammer in ID of bearing and pull out.
Install will talk once you get there tricky to do without hammer bearing but can be done using clamps and bushing drivers or spacers.
- Joined
- Dec 20, 2012
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- 9,422
Contrary to what you may think, all of us were trying to be helpful. Well, I suppose I should speak for myself and say that I don't think you're a hack in any way whatsoever. Problems like this happen to all of us at some point and I'm glad you're making some progress. Please don't give up on the forum; I've seen the guys bend over backwards to help all who ask and they will continue to try to help you if you let them.
- Joined
- Apr 30, 2015
- Messages
- 11,252
I feel your pain Richl, I've had those seemingly simple tasks turn into nightmares too, it's the loneliest feeling in the world
Mark
Mark
- Joined
- Mar 2, 2013
- Messages
- 895
Dont worry about me mark, I'm covered by the precision Matthew's "Best in the industry, 3 year warranty"! Cant understand why they dont make it easier for potential customers to read it before they make their purchase lol!
On a more serious note, because of a couple people here on the forums, I have a chance of fixing this thing. I have phone contact and emails with a forum member who is a retired machinist/rebuilder who along with members here are walking me thru the steps involved. I'm a long ways from being out of the woods on this, but at least now there is a glimmer of hope...
On a more serious note, because of a couple people here on the forums, I have a chance of fixing this thing. I have phone contact and emails with a forum member who is a retired machinist/rebuilder who along with members here are walking me thru the steps involved. I'm a long ways from being out of the woods on this, but at least now there is a glimmer of hope...
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- Apr 30, 2015
- Messages
- 11,252
PM usually does a good job with after-sale support. If I wanted to buy an asian machine I would buy it from them
- Joined
- Mar 2, 2013
- Messages
- 895
If it does not have anything major wrong with it, you will do fine.
They answered my emails for support, we walked through troubleshooting, we came to a conclusion. They told me the parts were cheap for me to buy, they told me it was a simple matter of a slap hammer. They offered no procedures for me to follow, they told me the parts numbers were in the manual (they are not). If that is support to you, than yes, they offered me support. While I never expected them to fix my machine, I was expecting more than what I got. With upgrades this machine cost in excess of 6000.00 dollars. Again I know I was going to do the work, and for parts in the price range of these bearings I was not expecting them to pay ( dont get me wrong, I would have loved to hear, "hey, we have that bearing in stock, we will send 1 out to you"...
Sales support is different than, your machine is down, you are still under warranty, how can we help?
Would I buy from pm again? They are still on this list, grizzly moved up to number 1 for any Asian machine, I'd rather deal with a larger company with resources and support. They all have their problems, we've all heard the horror stories, but burn me once, shame on you...
Hopefully I move past this, even if it comes to selling off the parts and scraping the rest I'm moving on from the discussion. I either have a working machine at the end of this or a new piece of floor real estate for cnc machines.
They answered my emails for support, we walked through troubleshooting, we came to a conclusion. They told me the parts were cheap for me to buy, they told me it was a simple matter of a slap hammer. They offered no procedures for me to follow, they told me the parts numbers were in the manual (they are not). If that is support to you, than yes, they offered me support. While I never expected them to fix my machine, I was expecting more than what I got. With upgrades this machine cost in excess of 6000.00 dollars. Again I know I was going to do the work, and for parts in the price range of these bearings I was not expecting them to pay ( dont get me wrong, I would have loved to hear, "hey, we have that bearing in stock, we will send 1 out to you"...
Sales support is different than, your machine is down, you are still under warranty, how can we help?
Would I buy from pm again? They are still on this list, grizzly moved up to number 1 for any Asian machine, I'd rather deal with a larger company with resources and support. They all have their problems, we've all heard the horror stories, but burn me once, shame on you...
Hopefully I move past this, even if it comes to selling off the parts and scraping the rest I'm moving on from the discussion. I either have a working machine at the end of this or a new piece of floor real estate for cnc machines.
- Joined
- Mar 2, 2013
- Messages
- 895
Sorry if that rant sounds like it is directed at you, it's something that's been on my chest for the last few days. You just allowed me the oppurtunity to vent... sorry. I've had some lingering issues with this machine since the beginning.