- Joined
- Aug 5, 2015
- Messages
- 14
Anyone replaced headstock spindle bearings with an upgraded version or gone to tapered bearings? PM 1022V lathe. Calls for 6202 ball bearings. Looking to improve accuracy, rigidity & hopefully quieter running.
-
Welcome back Guest! Did you know you can mentor other members here at H-M? If not, please check out our Relaunch of Hobby Machinist Mentoring Program!
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Head stock spindle bearing upgrade
- Thread starter Larry Curl
- Start date
- Joined
- Dec 12, 2016
- Messages
- 525
The next step up would be to go to an angular contact bearing, such as 7202, which has the same nominal dimensions as 6202.
You will need to have a way to apply some preload via shims or an adjuster ring. (I am not sure how this lathe is setup). If you have a way to control the preload you do not need "matched pair" sets.
The angular contact bearings (and tapered roller bearings) will generally not be sealed, so you may need to come up with a shield of some sort to keep out trash and keep lube in. You should probably avoid using compressed air to blow chips around.
EDIT: You might want to double check your bearing size, 6202 seems too small for a 1" ID spindle...
The PM manual also claims that these lathe already have tapered roller bearings in there.
You will need to have a way to apply some preload via shims or an adjuster ring. (I am not sure how this lathe is setup). If you have a way to control the preload you do not need "matched pair" sets.
The angular contact bearings (and tapered roller bearings) will generally not be sealed, so you may need to come up with a shield of some sort to keep out trash and keep lube in. You should probably avoid using compressed air to blow chips around.
EDIT: You might want to double check your bearing size, 6202 seems too small for a 1" ID spindle...
The PM manual also claims that these lathe already have tapered roller bearings in there.
Last edited:
- Joined
- Aug 5, 2015
- Messages
- 14
OK, thanks. The supplied manual/parts booklet identifies the bearings as "6202" with no other info, so I am ASS-SOOMING that they are standard deep grooved ball bearings. So, with your input, looks like I'm off to doing more research.The next step up would be to go to an angular contact bearing, such as 7202, which has the same nominal dimensions as 6202.
You will need to have a way to apply some preload via shims or an adjuster ring. (I am not sure how this lathe is setup). If you have a way to control the preload you do not need "matched pair" sets.
The angular contact bearings (and tapered roller bearings) will generally not be sealed, so you may need to come up with a shield of some sort to keep out trash and keep lube in. You should probably avoid using compressed air to blow chips around.
EDIT: You might want to double check your bearing size, 6202 seems too small for a 1" ID spindle...
The PM manual also claims that these lathe already have tapered roller bearings in there.
- Joined
- Jan 20, 2016
- Messages
- 602
You might be looking at the bearings for the gears rather than the spindle bearings.
Their diagram shows the spindle bearings as 32009 tapered rollers which are 45mmx75mm. The 6202 bearings are 15mmx35mm.
Which bearings are you referring to when you say "Head stock" bearings?
Their diagram shows the spindle bearings as 32009 tapered rollers which are 45mmx75mm. The 6202 bearings are 15mmx35mm.
Which bearings are you referring to when you say "Head stock" bearings?
- Joined
- Aug 5, 2015
- Messages
- 14
Spindle bearingsYou might be looking at the bearings for the gears rather than the spindle bearings.
Their diagram shows the spindle bearings as 32009 tapered rollers which are 45mmx75mm. The 6202 bearings are 15mmx35mm.
Which bearings are you referring to when you say "Head stock" bearings?
- Joined
- Dec 12, 2016
- Messages
- 525
You should probably start by making sure the preload on the tapered roller spindle bearings is appropriate.
There needs to be some, and the spindle will take some force to move, but not so much that it heats up when running.
Usually there is a threaded collar on the back side of the spindle for adjusting this.
You can also stick a piece of bar stock in the chuck and with an indicator on it and pulling on the bar you can see how rigid the spindle is.
There needs to be some, and the spindle will take some force to move, but not so much that it heats up when running.
Usually there is a threaded collar on the back side of the spindle for adjusting this.
You can also stick a piece of bar stock in the chuck and with an indicator on it and pulling on the bar you can see how rigid the spindle is.