Logan Lathe Model 200 - info on changing main spindle bearing

Google Logan lathe They have the manual and the parts.

Anyone with info? Manual? Parts? Cost for the bearing? The bearing looks like it is probably a standard 72x35mm double row ball bearing but it has a snap ring grove around the outside.

Get a manual from Logan Actuator.

Spindle bearings may be a problem, and some of the usual manufacturers have changed widths and other specs on Logan, from what they used to buy.

One owner resorted to grinding the snap ring groove himself.

Where there's a will, there's a way.

I think it is a "208". I think you can get a "208" bearing with a snapring on it at your local auto parts store. Those bearings were standard/common. Measure ID, OD and thickness and match it up. Paul

If its a 208 bearing, I should have new ones from a screw machine service shop. Let me know.

Located in the Twin Cities area of Minesota.

I paid $300 for mine, seemed to be a reasonable price given the low wear and that it had all the parts that tend to go AWOL (chucks, dogs, holders, and change gears.) Runs nicely except for the distinct howl from the headstock bearking.

Reth> I looked at one of those, the guy was wanting $150 for the lathe, no jack

I'm guessing it is a "207" bearing, still haven't gotten the retainer off to be sure. It's soaking in PB Blaster as I type. Anyone know if that is a left handed thread on the retainer???

6e70 wrote:

The 52xx makes it a double row angular contact bearing. NTN, NSK and SKF denote the snap ring with an NR suffix. Motion Industries lists a few 5207NR, but shows no stock. OEM price ranges from around $27 to $40.

Note that these are *not* precision bearings, but my experience is that these days standard ABEC1 bearings are usually much better than ABEC1 specs. There will be some axial freeplay, .0004 to .0011", in the standard 5207. Is it possible someone replaced a preloaded pair with the double row bearing, or is there another bearing on the spindle that provides the preload?

Ned Simmons

Thanks for the update on the part number, makes it much easier to call around and see what's out there.

Preload is on the small end of the spindle. I can't imagine that the original unit would have used precision bearings. You're right, modern low end bearings are way better than they were back a few years. Even the Chinese import specials are getting pretty decent.

I'll call around on Friday (if anyone is open) or Monday and see what is in stock and prices. I get a small discount so I'm figuring about $50 based on what I've paid for similar ones.

I tossed the old > >

The 52xx makes it a double row angular contact bearing. NTN, NSK and SKF denote the snap ring with an NR suffix. Motion Industries lists a few 5207NR, but shows no stock. OEM price ranges from around $27 to $40.

Note that these are *not* precision bearings, but my experience is that these days standard ABEC1 bearings are usually much better than ABEC1 specs ...

Yes ... about equal to older stock ABEC 3 or 5.

Logan made its machines with, variously, ABEC 3 and ABEC 7.

The ABEC 7 bearings run about a grand a set.

The ABEC 3 bearings are ... er ... considerably cheaper.

|| ||>>

||The 52xx makes it a double row angular contact bearing. NTN, NSK and SKF denote ||the snap ring with an NR suffix. Motion Industries lists a few 5207NR, but ||shows no stock. OEM price ranges from around $27 to $40. || ||Note that these are *not* precision bearings, but my experience is that these ||days standard ABEC1 bearings are usually much better than ABEC1 specs ... ||>>

|| ||Yes ... about equal to older stock ABEC 3 or 5. || ||Logan made its machines with, variously, ABEC 3 and ABEC 7. || ||The ABEC 7 bearings run about a grand a set. || ||The ABEC 3 bearings are ... er ... considerably cheaper.

There was a lot of static on this subject. on the Lathe_list Yahoo forum, which is devoted to Logan Lathe users and moderated by Scott Logan. It is a valuable source of information. Basically, Scott indicated he was having trouble getting the high-precision bearings originally spec'd, but was able to source bearings from Timken which were labeled as normal production but which meet the tolerances originally specified for the Logans.

In Timken or BCA that bearing number would be 207L (with snapring) or LO (without snapring, but grooved). Or 208L, 208LO. $25 - $30 should cover it at an auto parts store.

Texas Parts Guy

Installed the new bearing, much quieter.

Which specific one did you select, and did you also change the rear bearing?

5207NRZZ from SNR made in Germany. Didn't pull the other end, probably should have, not a big deal to change it out later. Rest of the machine is a bit loose (3 jaw is a beater), I'll deal with that first. I'm not trying for toolroom quality here!

I have full access to a Hardige with full set of collets by 1/64 for precis> Installed the new bearing, much quieter.

I have full access to a Hardige with full set of collets by 1/64 for precison and a 15" Enterprise for heavy work so the Logan is pretty much for quick projects.

Agree with you there.

I also have two Monarchs and a Hardinge, and my Logan 820 is my only English-metric machine.

Not that the Logan's strong suit is threading.

replying to RoyJ, Ronloganlathe2 wrote: Just went the head on my 200. Got both bearings at a local supplier.

First : You're replying to a 12 year old message . Second : Unless you've purchased the high precision type of bearing (ABEC 7 IIRC) that the lathe originally came with you're pissin' directly upwind . Slop equals chatter , and you'll have plenty of both if you bought common off-the-shelf bearings. Third : There is a Yahoo group devoted to the Logan and PowrKraft lathes . You should probably join .

Maybe. The manufacturers of bearings keep improving. As I understand it they make a bunch of hearings and then grade them. With improved methods they end up with more abec 7 bearings than they sell, so sell some of them as 5 abec.

Dan