ฝัง
- เผยแพร่เมื่อ 10 พ.ค. 2017
- This video is how to change both the drive pulley and the belt on the MINI LATHE. (MUCH) More information below!
Please like and subscribe if this was helpful!
Stuff from this video:
Pulley: amzn.to/2qyiv4t (I ordered the 15 and 17 tooth pulleys)
Belt: amzn.to/2pEGHho
Belt Size: 5mm pitch, 85 tooth, 9mm wide, 425mm long timing belt
Lathe: amzn.to/2nVBrEc
Stuff on the lathe:
Quick Change Tool Holder: amzn.to/2oZtFee
Tailstock Drill Chuck: amzn.to/2pmE0jX
Lathe tools:
Boring Bar: amzn.to/2pmy0b1
Carbide Tools: amzn.to/2oRZWax
Parting Tool: amzn.to/2nVCeW1
Center Bits: amzn.to/2oRRV5n
Drill Bits: amzn.to/2oz9W76
Other stuff:
Cutting oil: amzn.to/2ofkPaY
Mini Lathe troubleshooting guide: littlemachineshop.com/referenc...
Controller board wiring configuration: imgur.com/KIEzu92
The real version of the motor controller: amzn.to/2orw43F
Datasheet for the KBIC-120: www.galco.com/buy/KB-Electron...
Super nice guy who repairs the controller boards: olduhfguy.com/
Music:
/ jeff-kaale
/ maxzwell - วิทยาศาสตร์และเทคโนโลยี
Just bought an almost identical lathe and after 3ish hours of use the belt snapped. Spent more time trying to find a belt than actual use. Thanks to your video I have the new parts order. Great video thanks!
Get parts/belts here...littlemachineshop.com/products/product_category.php?category=1387807683&Source=Google&device=c&keyword=&gclid=CjwKCAjw682TBhATEiwA9crl31yurH7_wRn2mQSxitRuocH7eooq3Jz0xUdVrVhn68fFCbvFBs-VChoC33cQAvD_BwE
If the belt comes off it is usually an alignment issue. I know sometimes it cannot be aligned properly due to the set up.
Great video
Yeah, I don't think this lathe was built to the highest degree of precision. It works well enough though! Thanks for watching :)
Tim, your original belt is a T5 belt, which has a 5mm pitch with trapezoidal tooth profile. We manufacture timing pulleys, hence I know!
What is the belt size for the Harbor Freight/Central Machenery timing belt? They say it is M1.5xZ118. 118 is the tooth number. What it the 1.5? If I measure the pitch it is something along the lines of 0.19 inches. So.....
Basically, what is the belt in standard nomenclature?
@@captianmorgan7627 M1.5 - do you mean 5M = 5mm pitch? The nearest standard pitches to 0.19" is either 5mm or 0.2"(XL). Are the teeth trapezoidal or half round?
@@ritulm After doing some reading on decade old posts, it seems like it may be an old profile from the 60s. An 'F' profile. Trapezoidal teeth, 3/16'' pitch. Why they couldn't have used a commonly available, cheaper for everyone, belt....who knows. And now I need to determine if I want to bore out the motor pulley for my new motor or just change it out for something newer. But that would necessitate changing out the integrated timing/v belt pulley mandrel as well. Sigh.
On most of these lathes, the belt pitch is "M1.5" which means 1.5 module, where Module = pitch/pi. So pitch is actually 4.71mm. That's why a 5mm pitch belt "almost" fits. You manufacture a lot of 4.71 pitch pulleys ? -- likely not -- M1.5 pulleys and belts are very rare.
Your channel has so much potential I love it
Thanks! and thanks for watching!
I love your exhaust clamp motor mounts. Very good idea for a quick mount
I have the same lathe as this. I replaced the bearings with taper bearings. Works much better! I too have been working on replacing the belt. I have been thinking about going with xl037 type belting. It is the same type as all other machines. Thanks for the information.
Great work. I broke a belt on a belt sander, After buying two wrong belt I bought a new belt sander. Thanks for sharing
sam yeates 😂😂😂
Thanks for all the great info! I have a nearly identical machine that I just stripped the belt on and found your video extremely helpful. I had already ordered a belt, but could not find the small pulley that you suggested. It's pricey, but I went ahead and ordered it!
I got the pulley and drilled it out to 10mm (had to get a metric drill set anyway). I went through the same struggle with aligning the motor so the belt would not wander off, but I got it without adding a flange to the pulley. The machine sounds and feels SO much nicer now. Thanks again Tim!
Thank you! It helped me a lot.
You would make a killing selling retrofit kits for these mini lathes. Your work is amazing!
Thank you so much, I've had Drive motion companies search high and low for replacements with no success. And I really do not like that plastic gear. I am looking forward to ordering these parts and making the upgrade.
Glad it helped!
Awesome.
I have had issues with mine since the day I got it and it finally shredded the belt and ate the end of the plastic gear off last weekend while trying to part off some really tough brass.
I just received two new belts and another plastic pulley from The Little Machine Shop yesterday but I am going to stick those in a drawer and get the parts for this upgrade. I am in no hurry because I am going to do the tapered bearing upgrade at the same time and have to get the bearing races yet.
Thanks a ton for the video and the info, I just subscribed too.
Good mod and thanks for the belt info.
You may want to revisit the set screw in the future. Over time, it will destroy the wall of the keyway on the motor shaft. You could sand or grind down a key to make the motor shaft more of a D shape and then tighten the set screw on that.
Assuming you don't have a broach, you could also manually broach with your lathe using a ground piece of HSS on the compound. If you have an adjustable height tool holder, you can just increment the height to take material off on each pass. You would want to lock the spindle in place while doing this.
Interesting, thanks for the suggestions and I'll keep that in mind - I've been trying to get this lathe into a better-than-it-was-usable state first, then go back and make it better after that ha
It seems if the belt stayed entered on the gear the belt would not get damaged in the first place. With the mods you did, can you change the angle of the motor so that the belt does not rub on the guide while passing the gear on the motor shaft? Just a thought.
Thanks for the content!
Great work! Very interesting that they apparently used mismatched pitch between both drive sprockets....
Thanks! and yeah seriously... I don't know what kind of magic belt it came with but it definitely made finding a replacement difficult.
i made neu pulleys and use a v belt on my mini lathe ,great videos
This week on lathe of Theseus.
Great video. I would love to see you explain using the change gears to thread different pitches.
Thanks! I will definitely keep that in mind for future content - I have a threading project I plan on doing at some point so it will be a good changes to do that.
Shouldn't the motor be moved a bit so that the belt and pulley align (5mm - guessing)? It seems to me that the out of center is just the belt aligning with the upper pulley and that the protection will only end up ruining another belt.
good stuff man,,,,,
I get skipping when I engage the half nut:( it’s getting caught up with the manual feed handle and top flat gear thing any advice ?
I have the same lathe and I would like to lower the gear ratio for higher torque lower speed. I ordered a 12 tooth 5m timing pulley for the motor but I'm wondering have you tried to put a larger pulley on the spindle? I want to know what the largest I can put on it without having to modify the cover would be. Little machine shop has 40 tooth pulleys but I don't know if it will fit under the cover
Thank you for your very helpful video, you've saved many hours of figuring out how to do something that almost every mini lathe user will have to face. Would you consider removing the music from the video? This is an engineering subject and music really doesn't help. Again Thx for showing clearly the steps required.
I am eager to see you make metal gears to replace the plastic ones.
HTD belts and pulleys are popular in FIRST robotics. Check Vex Pro if you need replacements.
If you fitted a POLYVEE belt and pulleys....that is a belt and pulleys that have 5 (or more) micro V profiles and grooves similar to a standard single Vee belt, the belts can flex easier and run smoother than a single larger vee belt and also transmit more power than that timing belt.
great video that lathe is nothing but trouble. what camera and setup do you use to video ?
Thanks! Slowly it's becoming pretty reliable though... I use my semi-retired photography camera which is a Canon 7D and then one either a 60mm 2.8 macro, 28mm-135mm kit lens, and 16-35mm 2.5 wide angle depending on the shot and how much grease and stuff I have on my hands.
I would be interested to know if the original belt and pulley walked off. Maybe that’s why they put on the gear cap.
I wish you showed how you made the gear!
Been watching lathe videos for years now. I don't mind buying a lathe as a project, but this version seems to be really bad to start from. I'm thinking of buying the 17" (metric) Sherline.
a) 17" > 14"
b) very good customer support
c) precision - literally a better base to build upon.
Downsides are smaller swing and probably torque, but I probably won't be making big parts, and it's easy to rise head and tail to increase swing.
Hey Tim, just wondering how the belt has held up so far? I am thinking of making some mods to my single-speed lathe, too these days.
Hey! So far so good - I haven't had any issues with the new belt at all despite some minor rubbing I've noticed and will need to address due to the motor mount I made and how it moved the motor out a little. The main reason I did all this work is so if/when the belt breaks again, replacements are easy to find. Let me know if you have any other questions!
@@TimNummy Oh, actually, now that I have you - I didn't wanna diss on one of your other improvements, so let me phrase it as a question instead;-). How is the QCTP holding up? Full disclosure, I bought one, too (don't worry - I hadn't seen your video at the time) and it was borderline crap. The tool holders would move around, the whole thing was just too soft with tolerances way too sloppy. I got a better hardened steel one since then and all have been good. But maybe I just got a lemon the first time around...
@@AntiVaganza Ha no you're right - it's terrible. But the price was good. It was the first thing I put on the lathe and didn't really use it with the other tool holder so I don't really know anything different. Also, I'm less concerned about the softness in the tool holder because the rest of the carriage still has enough slop in it that I'd be better off trying to figure that out before worrying about spending the money on a nicer tool holder.
@@TimNummy Gotcha, and yeah - it was cheap. I happen to live in China, so this stuff is even cheaper for me. So, no real harm done;-). Those hardened OXA QCTPs are good, tho'! Well, at least the one I got;-)
@@AntiVaganza Oh cool! I was in China last year for 2 weeks and loved it... except the smog in Bejing ha. An upgraded tool post is definitely on my list of things to do.
Ciao Timmy scusa se ti disturbo avrei bisogno di acquistare la cinghia del tornio ho la tua stessa macchina. Potresti aiutarmi dicendomi dove posso acquistare la cinghia?? E che misure devo chiedere?? Grazie infinite.
Francesco
I assume you will eventually align the tailstock? Pretty much any chinese mini lathe are off centered and when you attempt to drill you will see the cutting tool bent.
My tailstock axis is above the spindle axe and I have to figured it out how to lower it.
Yeah, I've messed with it a little but but it's still a little off. I might try to get it closer at some point. Thanks for watching!
TimNummy little machine shop has a diy align tool on their site, fun little project and makes aligning the tail stock much easier.
Richard Nguyen try shimming under the headstock.
Plenty of belts on Aliexpress just bought two spare.
What make and size is your lathe?
Did you realize that your Belt is scraping on the Beltcover (Bottom Edge/ close to the Motor pulley) , that covers your Spindel??? You can see it clearly, the Moment you start your Lathe for the first Time after replacing the Pulley and the Belt! I`ve had the same problem with my Lathe. I simply grinded away some of the Housing Edge, to give it a bit more clearence...
Do you think it would be practical to machine a block to put under the headstock and install a longer belt to turn some larger diameter work?
Surely the change gears for power feed won't then mesh?
Ah yes I think you are right, that would not be easy to overcome. It was just a thought I had. I owned one of these awful little things briefly. I was able to return it due to some false advertising. Anyway Thanks for the response. If I get bitten by the machining bug again I will definitely look for a little larger machine.
Hola excelente video tengo un torno exactamente igual pero la correa se desintegró y no se la referencia, por favor me puedes pasar la referencia
I fitted a 170XL037 - No problem with original (metal) pulley. I can't understand why the existing belt has 180 tooth.
Garth
How many times have you striped that down
Too many haha
Has anyone had issues with power cutting out intermittently while machining something? Thanks
Thanks for all the heads up. I have the same piece of shit as well. Looked into as wellnot available in a 90 tooth. It is actually a what they call a module 1.5 pitch belt non standard in metric or USA. It has a pitch of 4.7 mm ( Module 1.5 so to speak) I don't think the 5mm pitch belt fits mine correctly. Works but I can see belt crawly on spindle causing unwanted heat. I was able to find a 83 tooth that fits spindle and motor pulley perfect, but to short.( Again Module 1.5 ) 70 tooth and 100 tooth no problem but 90 tooth.....I guess I will see about splicing a 100 tooth??? Thanks for all you info
Hi Tim: I found M1.5-90-10 timing belt here : www.aliexpress.com/item/5pcs-pack-PU-timing-belt-1-5-90-10-belt-width-10mm-teeth-number-90-sell/32838581932.html?spm=2114.search0104.3.75.401aaaff9Rba8D&ws_ab_test=searchweb0_0,searchweb201602_5_10065_10068_10130_318_10547_319_10546_317_10548_10545_10696_450_10084_10083_10618_452_535_534_533_10307_532_204_10059_10884_10887_100031_320_10103_448_449,searchweb201603_60,ppcSwitch_0&algo_expid=cf489a2e-0abd-4e2e-a192-4526c1e196a3-11&algo_pvid=cf489a2e-0abd-4e2e-a192-4526c1e196a3&transAbTest=ae803_4
Do you think it's a match? It seems the shape of the tooth is a little bit different. What do you think?
Thanks just what I needed. Perfect fit good to go now.
I wonder if that new built tore up, as it the motor gear was obviously misaligned which would cause it to get chewed up rubbing on the side of that plate.. I think I would have moved the gear outward until the belt properly stayed on the pulley.
I haven't looked in a while but last time I checked it's still in good shape. I fought with it much longer than I included in the video and I couldn't quite get it right. Thanks for watching!
Good to hear!
The correct belt is a 4.7 mm pitch 9.8 mm wide 90 tooth belt sometimes shown as 420 mm long. I found multiple sellers on aliexpress and one or two on Ebay/Amazon. The best designation is probably something like M1.5 90 9.8 / M1.5-90-9.8 / M1.5x90x9.8 / M.15*90*9.8. The best search phrase is probably "0618 lathe belt". Look over the hits carefully to find the M1.5 and 90 tooth / 420 mm info. If sellers would just start providing the "M1.5" and tooth count in their description, finding the right belt would be so much easier.
That's very helpful, thanks. The new belt in the video is clearly the wrong one for the spindle pulley.
i think if the tooth width is 5mm and the distance between any two teeth is also 5mm then it is T10 timing belt but if the distances are 2.5mm then it is T5 timing belt
Well made and well shot video sure helped me. Just one thing the music is simply annoying and the video would be much improved with just natural sounds.
Por favor cual es el número de la correa que lleva original
friend your lathe is more week?
The belt used is 420mm long 90 teeth and 5mm pitch.
So from my understanding the plastic gears are only used for power feeding anyway?
On this one, yes. The two speed versions have a plastic transmission gear in the headstock that's used for turning the chuck. You can get metal replacements though.
@@TimNummy I know, the replacements are another 100 bucks though which together with the lathe itself is almost the price of the "next better" chinese version with factory installed metal gears and a small LCD (I think they´re called something like MX-180 or 210).
7:50 The strap is scraped over the housing, it will not withstand long
Its a module 1.5 belt 90 teeth, yes very hard to find.
Tim Tilmann cheers. Any idea where to find one?
We're do I find the parts list to do this please
The description!
what's the name of the song at 5:22
Superdolphin 64 Darude-Sandstorm
Could u use a milling machine. In other words a project that requires one.
if you are using a different pitch belt and pully on the motor doesn't that make cutting threads impossible now? it seems like you would not be able to get the right ratio with two different pitch pulleys.
Nope. Because all this does is affect the speed/torque available to the lathe. The ratio between the chuck and the feed screw is determined by the gears installed between the two.
@@TimNummy ok thanks, that makes sense.
Never leave chuck key in the chuck
Thats why when I first saw it I said it wasn't even a plastic or wood lathe
You could have just ground the top of the round file and used it as a boring bar.
Did you ever hear something about toothed-belt profiles eg. H, T10, T20, 8M ...and so on?^^ you cant match a belt with a different profile gear!!!
at this point id turn the motor and headstock pulleys to use v belts and make a dang belt out of leather lol
l gutt’ed my lil red mini lathe, put ac motor on. V-belt. Steve Jordan channel & also artisan makes channel.
Ofcourse the belt slips off the small gear, because the big one hasn't the same tooth profile as the belt and the small gear!
What is the song name of the 3. minute
Moonlight - Engelwood & Jeff Kaale (Shazam'd it!)
You are having alot of isues with this lathe ... I would explode so far..
You’re audio is going in and out at different points of the video why is that?
Take it slow when doing the motor the angel of it is dropping the belt off
I would have just converted this to a direct drive.
i bought this belt after this video and its the incorrect belt its far to short. just cause fits your lathe dont mean will fit others. these crappy lathes all seem differant
Ah bummer... I had a few misses too before I found one that would work. Plus I changed the pulley to match the belt which is definitely an aftermarket change.
perfect but breath noises are very annoying
Music choice...
"mismatched btw metric and _standard_" wtf :D
No markings or indication of size.. Get your caliper out and start to measure..
You seem to have gotten the most mis matched poorly assembled Mini Lathe ever.
Agreed... that's what I get for buying the cheapest one I could find I guess.
why do all those mods when you can buy a pulley for $5 and the belt for $10 from Little machine shop.com?? I just did that a nd works great. I like your motor bracket but it is over kill. Just tap the mounting studs properly and locktite them.....they are plenty strong enough.
We have a joke regarding our homeland' father sabre which is on a museum in exhibition.Firts they had to change the blade due to being old and rusted.....later they changed the handle. Now is not the same sabre anymore.With this lathe is the same....you basically will have to change 95% of all the parts.When it will work properly will have no more chinese parts anymore, and will cost $3.000!!!