Unimat@groups.io | Messages

Re: Funny things seen Peter Brooks All Messages By This Member #60653 Ha ha, yes, the items you get to do that kind of work are often really puny and soon get full of all sorts of, er… gunk… That looks a lot more robust!
Re: Needle bearing WW Spindle OldToolmaker All Messages By This Member #60652 Quinn, The 8mm WW collets are readily available, but expensive.? Also, just a thought for you, I have made several 8mm solid keyed WW collets to use as arbors for various purposes. Once you have the correct taper dialed in the rest is easy. The same setup can be used to make split collets. You would be amazed how nice they turn out if you work carefully and pay attention to detail. Sav -- http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI-LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION
Re: Funny things seen Ian Adam #60651 Sorry guys, You're all wrong. The hedge trimmer is much bigger. That's the precision beard, nostril hair and eyebrow trimmer. I could do with a new one - mine's worn out. Ian
Re: Needle bearing WW Spindle Quinn Golden All Messages By This Member #60650 Incidentally I am looking for collets for the spindle iff’n anyone has any. ?
Re: Needle bearing WW Spindle Quinn Golden All Messages By This Member #60649 Hello, Thank tyke for the thought. ?It was hardened, however the seal on the needle bearing was bent, damaging the roller cage. ?I found the new bearing and installed it yesterday.
Re: Needle bearing WW Spindle OldToolmaker All Messages By This Member #60648 Quin, I have owned a Unimat watch maker WW spindle for many years and it has not given me any problems. I wonder if yours could have an issue with hardened grease. I took my spindle apart and and cleaned all old grease out using solvent and re-greased. The spindle has both needle bearings and a ball thrust bearing. Dick -- http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI-LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION
Re: Funny things seen Dave Seiter All Messages By This Member #60647 I think that's an accessory for the Maximat!?? -Dave On Friday, July 21, 2023 at 07:21:56 AM PDT, Peter Brooks <peter@...> wrote: Spotted on UK Ebay, this SL appears to come with the very rare and hard-to-find hedge-cutting attachment: (Sorry, I couldn't resist it!)
Re: Funny things seen John Hutnick All Messages By This Member #60646 This jerking around with the hedge trimmer made me go and look at Ebay UK. More to the point, someone has just listed a Cowells lathe starting at 50GBP.
Re: Funny things seen Tom Angell All Messages By This Member #60645 开云体育 Now I actually did ?laugh out loud at your crack about the very rare hedge clipper attachment! toggle quoted message Show quoted text On Jul 21, 2023, at 10:21 AM, Peter Brooks <peter@...> wrote: Spotted on UK Ebay, this SL appears to come with the very rare and hard-to-find hedge-cutting attachment: <Funny01_SH.jpg> (Sorry, I couldn't resist it!)
Re: Funny things seen Wm. Neal Lewis All Messages By This Member #60644 开云体育 Been on eBay for more than 25 years. Bought from all over the world, and you're right, never saw anything like that before. Might just have to buy it to try it. I have a hedge that needs trimming. Never thought of doing that with my Unimat SL. Best regards, Neal Lewis On 7/21/23 9:21 AM, Peter Brooks wrote: toggle quoted message Show quoted text Spotted on UK Ebay, this SL appears to come with the very rare and hard-to-find hedge-cutting attachment: (Sorry, I couldn't resist it!)
Funny things seen Peter Brooks All Messages By This Member #60643 Spotted on UK Ebay, this SL appears to come with the very rare and hard-to-find hedge-cutting attachment: (Sorry, I couldn't resist it!)
Re: Question for you guys that are tech savvy Bill in OKC too All Messages By This Member #60642 John, these are what I bought:?? The way I'm planning on doing this is a power controller for each motor. The 150 in the part number means it has a 150watt power rating, and the 24 means it puts out 24 volts DC.? I bought these speed controllers:?? They'll control 12-60 volt DC motors up to 10 amps. Got them because I wanted them a bit over-rated for the supplies I'm using. Also, they will fit in the boxes I bought. They're not perfect for what I want, but they were cheap!? I wanted individual power supplies, where some other folks wanted a single power supply to run more than one motor. If you wanted to run two of the 150watt motors, you'd need at least a 300watt power supply, maybe more.? HTH! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first. On Wednesday, July 19, 2023 at 11:05:21 AM CDT, John Hutnick <johnhutnick@...> wrote: Assuming that I have a 24v DC motor, exactly what power supply and what controller do I buy(referring to Ebay)? I do not want to get these items and then someone here tells me that they are not the right ones.? I am in the US.? Thank you for any advice.
Re: Question for you guys that are tech savvy John Hutnick All Messages By This Member #60641 Assuming that I have a 24v DC motor, exactly what power supply and what controller do I buy(referring to Ebay)? I do not want to get these items and then someone here tells me that they are not the right ones.? I am in the US.? Thank you for any advice.
Re: Wiring up motor Andrei #60640 开云体育 Here is a controller that works up to 180v DC. There may be others in this price range/voltage combination.? However, 200v DC is a lot of juice. You may find a cheap motor running 24v, 36v or even 48v that will be a lot cheaper and you could find really cheap speed controllers for it.? Not everything has to be done the hard way just to save 20 bucks on a motor and spend many hours and a few extra hundred bucks on the rest of the parts.? Price/benefit analysis should always be done before embarking on a project.? And, NO! labor is not free. The time you spend doing the project could be used for something else that is more valuable like finish an expisting project, or play with the kids, chase the dogs, drink yourself silly, party, learn a new skill, etc. You get the drift.? toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of Bill in OKC too via groups.io <wmrmeyers@...> Sent: Wednesday, July 19, 2023 10:45 AM To: [email protected] <[email protected]> Subject: Re: [Unimat] Wiring up motor ? According to my Ohm's Law calculator, a 250watt motor at 240vdc will draw a bit over 1amp. A 5 or 10 10amp rated bridge rectifier should work fine to get your 240VDC (max rated voltage). A 1amp rectifier would be a little too likely to fry itself one of these days. Looks like the usual motors for the SL & DB run around 5000rpm, so the belts & pulleys should work with a bit of adaptation. A speed control for the motor, OTH, is likely to to be a problem. Those cards aren't cheap.?? One the 24VDC system I'm working on, the plan is to use the motor speed control with the pullies and belts to have the motor run at speed that take best advantage of both motor and pulley system. That's going to include a slow speed motor mount, and new pullies as needed. I've got a couple of hundred dollars in my setup before I even assemble it, but I got parts to make 3 controllers for the three motors I bought. Looking at making very light-duty toolpost grinder out of the third motor. Also putting together a DC battery pack to run it off-grid... Yeah, I'm a nut! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first. On Tuesday, July 18, 2023 at 01:55:54 PM CDT, Neil Morrison <neilsmorr@...> wrote: That should be OK to get you the 240 volts you need.? A full wave bridge and a 350 VDC capacitor will convert this to DC. A speed control for this will be tricky however. Was that in your plans? Neil ----- On Tue, Jul 18, 2023 at 5:08?AM phill005 via <phill05=[email protected]> wrote: Hi, Can anyone help me determine how to wire this motor up to use on a Uninmat SL please. I have just been given this motor it is said to have come off a small lathe and that is all we know. I see It needs DC to power it but the 220vDC is where I am lost, what would I need to drive/control it? Thanks Phill
Re: Wiring up motor Bill in OKC too All Messages By This Member #60639 According to my Ohm's Law calculator, a 250watt motor at 240vdc will draw a bit over 1amp. A 5 or 10 10amp rated bridge rectifier should work fine to get your 240VDC (max rated voltage). A 1amp rectifier would be a little too likely to fry itself one of these days. Looks like the usual motors for the SL & DB run around 5000rpm, so the belts & pulleys should work with a bit of adaptation. A speed control for the motor, OTH, is likely to to be a problem. Those cards aren't cheap.?? One the 24VDC system I'm working on, the plan is to use the motor speed control with the pullies and belts to have the motor run at speed that take best advantage of both motor and pulley system. That's going to include a slow speed motor mount, and new pullies as needed. I've got a couple of hundred dollars in my setup before I even assemble it, but I got parts to make 3 controllers for the three motors I bought. Looking at making very light-duty toolpost grinder out of the third motor. Also putting together a DC battery pack to run it off-grid... Yeah, I'm a nut! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first. On Tuesday, July 18, 2023 at 01:55:54 PM CDT, Neil Morrison <neilsmorr@...> wrote: That should be OK to get you the 240 volts you need.? A full wave bridge and a 350 VDC capacitor will convert this to DC. A speed control for this will be tricky however. Was that in your plans? Neil ----- toggle quoted message Show quoted text On Tue, Jul 18, 2023 at 5:08?AM phill005 via <phill05=[email protected]> wrote: Hi, Can anyone help me determine how to wire this motor up to use on a Uninmat SL please. I have just been given this motor it is said to have come off a small lathe and that is all we know. I see It needs DC to power it but the 220vDC is where I am lost, what would I need to drive/control it? Thanks Phill
Re: Wiring up motor Neil Morrison All Messages By This Member #60638 That should be OK to get you the 240 volts you need.? A full wave bridge and a 350 VDC capacitor will convert this to DC. A speed control for this will be tricky however. Was that in your plans? Neil ----- toggle quoted message Show quoted text On Tue, Jul 18, 2023 at 5:08?AM phill005 via <phill05=[email protected]> wrote: Hi, Can anyone help me determine how to wire this motor up to use on a Uninmat SL please. I have just been given this motor it is said to have come off a small lathe and that is all we know. I see It needs DC to power it but the 220vDC is where I am lost, what would I need to drive/control it? Thanks Phill
Re: Wiring up motor Bill in OKC too All Messages By This Member #60637 SIEG is the group that makes the Harbor Freight, and many other brands, mini lathes. They use a tri-ac voltage & speed controller. You might contact ArcEurotrade or Little Machine Shop, depending on your location. LMS is in the US, ArcEurotrade in the UK, IIRC. My mini-lathe use a 180vdc card, 120vac power supply, made for the US market.I have bought a couple of small items from ArcEurotrade, and more stuff from LMS, both are, in my experience, good folks to deal with.? HTH! Bill in OKC? William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first. On Tuesday, July 18, 2023 at 08:23:24 AM CDT, phill005 via groups.io <phill05@...> wrote: Hi Bill, Been advised it's see below, I have been playing with a 24v DC motor and controller but I am getting it shut down as the speed increases so I don't know what is wrong on that, A friend called in this morning and I was telling him about the shutting down and he came up with the 220vDC motor and say's try this, anyway been ringing round a few friends and we found this info for it. But still no wiser yet how to power it up, but will look into what you say Bill, many thanks. Phill SIEG C2-150 Motor 250W Brushed DC Motor - Type ZYT-250. Dimensions: ·???????? Body Length: 145mm ·???????? Body Diameter: 83mm ·???????? Fixing is via two M6 threaded holes in body on 30mm centres. ·???????? Speed: 5000 RPM ·???????? Power: 250W ·???????? Voltage: 220VDC ·???????? Current: 2A ·???????? Drive Shaft: ?8 x 22mm with 3mm wide key and 2 circlip grooves.
Re: Needle bearing WW Spindle John Entwistle All Messages By This Member #60636 开云体育 A quick google search will offer up a plethora of sources:

Best Regards

John

Show quoted text

On Jul 18, 2023, at 12:25 PM, Andrei <calciu1@...> wrote:

Check SKF or Timken. They make a boatload of bearings.?

From: [email protected] <[email protected]> on behalf of Quinn Golden <quinngolden@...>
Sent: Tuesday, July 18, 2023 10:43 AM
To: [email protected] <[email protected]>
Subject: [Unimat] Needle bearing WW Spindle

I just brought in a watchmakers spindle. ?It’s tight and rough. ?Disassembly revealed damaged needle bearing retaining ring. ??

Has anyone sourced a replacement bearing? ?

Original is an INA?00/R2 RNA-NA 4903 ? AC 152.?

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