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Colchester used Gamet tapered bearings in their head stocks for many years, and Lilkey still do. They are oil bath, and on a small lathe may cause design issues.

Schöne Arbeit mit einem noch besseren Ergebnis!

I installed a set of sealed angular contact bearings but replaced the plastic spacer between the bearing and the nuts. The plastic spacer will deform over time and increase the backlash in the spindle. Now that you have the lathe back together it would be an easy task to make a steel spacer and install it in place of the plastic one. I tried the steel gears in drive train and had the same excruciating noise your lathe has from them...very poorly made gears...went back to the plastic gears and have not had any trouble with them (lathe is 39 years old).

Sounds like you have an old DC-3 warming up in the hanger 😊

Is the cross slide the same dimensions as the old one length X width. If so mill out

That bronze might as well be gold for the price .

I've just purchased a sieg X2 and ive been tossing up to replace the nylon gears with steel or convert it to belt drive which is probably the best way to go, so far im impressed with it, has milled some things that I wasnt sure it could do but did them pretty easy, the steel option will be noisy so got to take that into account

an... uh... assembly... I... think... ah... I... could... um... cut... down... ah... on that. My god, this guy is painful to listen to, even at 1.5 X speed. I... won't... um... be... watching... uh... any more... ah... of... his.... um... videos.

Years ago I purchased a LMS 7 X 16 Hi-Torque mini lathe and throughout the years of constant modifications, including what you have done here with the extension kit. I spent hours stoning and lapping the Gibbs that from the factory are almost crooked. I also added additional Gibb screws in attempt to keep everything a bit more rigid and maintain adjustment. With constant adjustments over the first year and use of nearly every day, finally got the majority of backlash to settle down. I installed DRO system on mine, so the .003'-.005" backlash is not a complication. It seems that every use, for a different project, makes me aware of another needed modification for both the mini lathe and my LMS Hi-Torque mini mill. I am thankful for my mini lathe and mill, but nothing compared to my old South Bend lathe or Jet milling machine when I had my shop. The Chinese products are affordable, but far from capable of holding any tolerance until modified. Once you disassemble a component and coat it with some layout die, hit it with a good stone and be ready for a shock of how far out many of these parts are. I can now hold .0005" on both my lathe and mill. Thanks for the great video.

Where can I buy those metal gears friend?

Where can I buy those metal gears friend?

5:34 i did the same holes with my WEN 7"X12" mini lathe to lubricate the new steel gears with liquid grease WURTH LPC200, and works very very good.

My plastic Gears finally *sniffed the thrust* earlier today - after 18 years. They were getting noisy, then busted altogether…

Sealed angular would be nice, a small rat tail file made quick work of the thickness difference on the plastic spacer making about 3/32 room for the key. felt goes a long way to seal the bearings and some aero shell clayed grease. Not to mention a 5000lb vehicle goes 100k miles on a single lube session so It’s highly unlikely it would ever be an issue. But we’ll see. YMMV. Now to get some gib strips that don’t suck…lol

Way too much woffle .......Get to the point !

So what are your thoughts after 2 years? Are you still happy with it, or are there things you’d do differently? This was a really well done video! Controlling backlash is a hobby within a hobby for many of us mini lathe owners! If you make a sequel, PLEASE say “Go ahead, make my day” just once! I promise to sub if you do! A fine job Sir!

Look at this guy acting like hes doing something worth anything. Just get a belt buddy you'll lose your hearing. Just beat the gears out with a hammer you don't need a press, its not made on a precision tool by experts, they just fall out after a couple hits, people are weird who pass them Waste of time

Excelent video. Thanks

Very Nice Job! I am copying your design, Implementation. I too had bought the tapered roller bearings from Timken and realised the same and then bought the angular contact bearings. I just wasnt happy running the tapered rollers without an oil bath or way to grease them. Nery nice work sir. Now I am off to find 5/8 x 1/2" fine thread headless allen bolts.

I fitted angular contact bearings to my lathe. The headstock is the same as yours. I no longer use the gears as i run the lathe vi a 3/4hp 3 phase motor and vfd. The gears are still in the headstock, but are locked in Neutral as the spindle is now driven directly by the motor. The bearings have stood up well and have been in about 3 years and still seem fine. I check the preload occasionally but they have not needed adjustment so far. I have a lot of projects awaiting my attention, but lack of time and cold weather means i am not spending a lot of time in my mini workshop at the moment. I have the same mill as you as well and the larger x2.7 mill as well, also a slightly larger lathe than yours, All of which get used. Keep up the good work you have a good channel.

Good information, I do struggle with slow boring speakers though. 1.5 X speed in settings makes it a bit better.

im sure the bearings are 'better' considering the inherent other shortcomings of a small lathe anyway.. the regular bearings will 'preload' also, it just has to be precise, bet you didnt know that ... and metal gears in likely most situations for the hobbiest have exactly zero to do with strength or wear characteristics and are not an 'upgrade' per-se.. plastic is actually preferred so your entire drivetrain isnt nuked by a user error, but no, the 'advantage' of a metal gear set are the odd tooth count gears in the set allowing approximation for threads your leadscrew isnt cut for ...

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I have this mill thx for the pre game. seam pretty straight forward, blew my gears w/ a fly cutter today. I guess I'll have to make a deal at work to have them made, machinist throw chips at welder, welder throw sparks at machinist. im the welder dam. thank you for the vid

Made sense on how these spindles come apart and go back together. That's the important thing. Sir, you're methodical and I appreciate that.

Why didn't you change also the plastic spacers with steel ones ? I had the same problem in my chinese lathe, the internal gears were broken, at that time i didn't know how getting spares, and adjusted four modulo 2 gears, purchased abroad and machined a bit, using the only couple of plastic gears still working in the lathe ... So i changed also the spacers with steel type ( again machined by myself on my half-functionig lathe ), whose lenght must be as accurate as possible, just not to over ( or under ) stress the bearings ...

That drilling jig for the shim stock is a great idea!! I too was struggling making shims for the saddle. Thank you!

Just checked McMaster Carr for this tap. $57.!

Very informative. Thanks

When I need to make holes in a thin sheet metal, I use an end mill.

I see this is about 2 years old. Would it be better to use the belt adapter kit? It's only $150 at the same sight. I can't find the gear kit or price for it.

Definitely going to do these upgrades to my mini lathe! Very clear and helpful video. Thank you!

Fixing this mill is fine but why not just buy a better small mill in the first place? Not sure this is worth the effort and cost.

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Good video Dr. Jim! Stay healthy my friend!

I am waiting on the metal gears from little machine shop / I have a press and your video was a Hugh help. After taking my grizzly mini mill apart I now whish I would of just bought that Harbor freight Mini Mill honestly I bet they are not much different other than the big price difference. Thanks again ! And I see you have the trolls piping in showing how senseless they are.

Why is everybody obsessed with backlash! before the invention of ball screws everything had backlash and still made high precision equipment without the world coming to an end..

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Nice job!

Locktite!

Can you use a stainless drive nut

can you tell me. Where can I buy these gears? thanks

i bought that finally. lil machine shop, Pasadena CA..89$ plus tax/ship. Bought couple brass gib strips from em to.

You dont know what your doing,!!!!!!!!!!!!!!!!!!!!!

Wonder where you got your metal gears I got mine at LMS and even after a second set they had way more backlash than rhe nylon originals. Just a lot of noise and affect cuts more. The weak part is the belt and plastic motor pulley. Such a pain to keep the belt tight. Tear everything down to get to the motor bolts.

There different types of grease, just thought like to help and works very very well, motor bike chain have this spray that it's very stick as motorbike chains need this type of grease. There great on the gearing as it doesn't fly off the gears and bearings and for shore no mess.

I punched my shims with hole punch set, that worked for me. It's all about rigidity .

Thankyou for the detailed description

Very nice Jim, I am going to try that on my mini lathe. Thanks Jesus Saves

I'll be changing my bearings. I've installed the belt drive upgrade, so no more gears to fool with.