Thanks. To complete this project we bought the following items off of Amazon. Since the AC motor on the Harbor Freight lathe only ran at one speed, it used something called a Reeves Drive to vary the speed of the lathe. I assured him it would not get thrown away. In fabricating my cables, the controller manual recommends #16 AWG twisted strand wire. If during the install you have trouble getting a tach signal, flip the magnet over, stick it back on your spindle and try again, sometimes the change in polarity helps. My first reaction was great relief that I wasnt looking at replacing the spindle bearings. So I scored a free treadmill recently. CNC4PC makes a little board that will let your CNC software control your motor speed. The only other tool you'll need is a drill and tap set. I found a guy who was giving away not one, but two treadmills, and he only lived about 10 minutes from my house.High-Ho Pickup Truck, Away! Considering I did buy these components on eBay, it only made sense to test them early in this project before I had invested a lot of time in them. Reverse: A switch to reverse the contacts so the motor runs in reverse. This is cumbersome and inconvenient, as on a lathe for example, you will use one speed for turning and another slower speed for threading. Also, use proper personal protective equipment (PPE), including gloves, goggles, and a dust mask, when working with power tools. To me "line voltage" in house wall plug in! Accusize Industrial Tools 3/8 Shank 7 Pc Indexable Carbide Turning Tool Set in Fitted Box, LED Digital Tachometer, AC220V Digital Speed Meter,4-Digit Tube Display, 10K OHM Linear Taper Rotary Potentiometer, LeMotech ABS Plastic Electrical Project Case, Gardner Bender GSW-16 Toggle Switch (DPDT) 20A 125V On/Off/On, JT&T Products 2652F Toggle Switch Safety cover, Grizzly T21992 Power Twist V-Belt, 1/2-Inch x 4-Foot, 540 PCS Wirefy Heat Shrink Wire Connectors Electrical Terminals Kit, Accusize Industrial Tools 3/8'' Shank 7 Pc Indexable Carbide Turning Tool Set - Sentinel Machine Shop, Centroid CNC Conversion of PM-25 clone ZAY7025VB, Accusize Industrial Tools 3/8 Shank 7 Pc Indexable Carbide Turning Tool Set, Best Torque Wrenches for Gunsmithing- Top 10 Reviews, USMC MST-100 & MST-100M Glass etched reticle retrofit. by Torch Wed Apr 29, 2015 9:53 am, Post Tips, techniques, modification and use of these machines is topical. 9920 Painter Ave. Eurton Electric Co., Inc. 1.5 HP 3100 RPM. You want something with this kind of horsepower and voltage ratings. Gemini Controls Treadmill Drive Installation & Adjustment, In our case we chose to mount the motor below the table and run the belt down rather than behind the lathe as was original design shown in the illustration below. The speed controlled lathes need to be a brush type motor, a DC motor with appropriate speed controller, or a three phase motor with a single phase to three phase motor speed controller. Here is the assembly as removed from the treadmill, Leeson 1.62hp motor, plenty of power. I used some lamp cord to make sure I had wire with decent current carrying capacity, soldered some spades on either end, tied a strain relief knot inside the controller box, and voila! Thanks, I will keep my eye open for one. Also note the speed range on the motor youre looking at. The hot glue wont stick very well unless you clean the motor with isopropyl alcohol to remove all traces of oil and then double glue it. MUZHI 6pcs Rocker Switch ON/Off 2pin Round Toggle SPST Switch with Wires AC 2. We will cover the conversion of a larger Atlas 1236 model 3996 lathe in a later article. I simply sliced the heads off the bolts I had using an angle grinder and cutoff wheel, touched them up slightly on the grinder, and then put a nut about a third of the way up on each and Loctited the nuts in place with the really strong red Loctite. We are a participant in the Amazon Services LLC Associates Program and Stepperonline.com affiliate advertising programs designed to provide a means for us to earn fees by linking to Amazon.com and Stepperonline.com sites. Sep 21, 2019 at 8:52pm. Carefully remove the motor, ensuring not to damage any wires. Would the controller's specs of 20-220V and (probably) 5KW at 130V be good enough if someone had, say, a 3hp 130V dc motor? Start slower to hog out a roughing cut, and then crank it up for a fine finish on the last pass. Too, there is that the lathe model has the motor positioned where it limits some turning operations. India. On the motor tag it says 3350 rpm, but when I put my tach on it, I can get 2925 in one direction and 2900 in the other. Now, it works great.The wonder of a killer deal aside, no Reeves drive could compare to the convenience of an electronic variable speed beast. I dialed it up to 30 or 40 rpm at the minimum. (I googled it.) kaustin | Posted in Turning and Carving on July 4, 2009 03:14am. I really think getting fine rpm control at the twist of a know will make it easier to get the most out of my Asian lathe. ), A 3hp motor should be 2237.1 Watts. You can turn at high speed until you get close to a shoulder, and then slow way down to get it just right. That is true, but since we're dealing with a motor and not something more sensitive like an amplifier or computer circuit I skipped the capacitor. I have had to bore out pulleys before to accommodate these odd dc motor drives, but never one as big as a step pulley. Note that while my motor is rated at 2.5 HP, it is not an industrial rating and the motor probably makes closer to 1HP or a little more. Highly recommended! Is Converting a Lathe to Variable Speed Cheaper Than Purchasing a Lathe Comes with Speed Controls? Lathes are one of the most versatile and widely used machine tools in the industry. That price seems a little steep for my wallet. #1. Center drilling for the pulley set screw. Voltage is obviously okay. 4 years ago by LX Kid Wed Apr 29, 2015 3:35 pm, Post $700.00. 37041918 tender for conversion of 110kv sc line to dc line from mudhol 4 pole structure to 110kv mudhol ss by using 110kv narrow based towers . I took the electronics, wiring, and, of course, the motors. DC motor with Armature-voltage DC Motor Control. That is a low end lathe but your conversion has not hurt it. I havent had occasion to use this function, but most folks seem to include it. That meant I only had to mount the timing pulley. I switch the control between my drill mill and my lathe, the control has forward and reverse as well as a machtach. by LX Kid Tue Apr 28, 2015 8:47 am, Post You must log in or register to reply here. Hi. DC conversion on lathe. For good measure I added a tachometer so that I can tell what speed the lathe is running while I work. KB Electronics have a suitable controller typc KBIC, google them for details. Has your config help up OK? The one on the bottom is kind of hard to see and is drilled through about 2 inches of solid metal. Most of these lathes get down close to 1:1 (usually 1:1.2) on their pulley arrangements. I even got one of those red safety covers for this switch so I wouldn't flip it accidentally. Regards Ian spro Posts: 8016 This walks through my entire setup and show all the parts and modifications necessary to put a treadmill motor on a metal lathe.20K potentiometer https://amzn.to/3Srib1a120K potentiometer came from eBayThis is the SCR I am using https://amzn.to/3IQAVTL If you are not in a hurry one can be had from eBay for about 2/3 the cost but could take several months to ship.This is the rectifier I am using https://amzn.to/3GjVCao You will need to fabricate a motor mount or use the treadmill mount on your bench. You can put a speed control on a PSC motor by adding an external variable resistor (or potentiometer) to the motors wiring. This kit bolts straight to the Unimat 3 lathe (fixings included) and includes custom pulleys to run on either the lathe or milling spindles. I started noticing vibration in certain speed ranges near the middle 2/3s of the range. Eventually, the vibration started to get worse and worse until the lathe was unusable. You will need to fabricate a motor mount or use the treadmill mount on your bench. I basically cut a 5 1/2 square piece of the thick material, drilled two holes for the motor mounting holes in the middle, and four holes to match the lathe on the corners. Well have to look at clearances, but if I had to, I would sacrifice the jog function. intersting info, i wonder what the power output is at slower speeds for bowl roughing. So I need to keep that V spacing in mind. Register today and take advantage of membership benefits. Much easier to install the motor now! I don't see pics either. Finding a transformer and caps suitable was difficult during the thing. For now I just want to put a few miles on it to be sure it works well. 4000 seemed a bit much, so I scaled that back a bit too. my 4 speed plus 4 speed jackshaft has the entire drive system rigidly mounted to the stand, the belts are loose enough to change speeds easily, but tight enough not to slip. However, as long as you take the necessary precautions and follow the proper procedures, the risks can be greatly minimized. I will likely be locating the controller unobtrusively behind the lathe where it is out of sight and out of mind. Recycled. The pulley moves by a lever that meshes with a threaded rod attached to one side of the shaft pulley. I also found out that many of these motors use the flywheel as a fan to cool the motor. There have been some really bad motor controllers that couldn't handle that situation (hopefully all in the past). 2. You mention the controllers are roughly the same price, but I think you may find out that they can be the differentiator between the motors. Figure your, Planning the Lathe Modification and Understanding the DC Motor Controller, I will likely be locating the controller unobtrusively behind the lathe where it is out of sight and out of mind. Installed in a headstock as I suggest it will increase max spindle RPM to over 9000. Anchor Designs 2.84K subscribers Subscribe 27 Share 2.6K views 2 years ago GREAT BRITAIN Final assembly of the. We are getting less than 20,000 hours out of the bearings on that motor before they start to fail - a fraction of the life we should be getting. Im going to need to make a better motor mount so this doesnt happen again. III. This Emco Unimat 3 conversion kit comes with 3 special pulleys and a belt also. That turned out to be a non issue. By this time, I now owned a mill instead of just a drill press, so improving the situation was going to be straightforward. The plan is to replace the existing motor on my lathe with this one. This modification requires the following steps: 1. 1 year ago. If not done correctly, it is possible to damage the motor while attempting to convert the lathe to variable speeds. I put these at 90 degrees to one another. Mar 17, 2023. Gradually increase the speed to get a feel for how it responds. A set the minimum speed, maximum speed, and acceleration just by fiddling with the trimpots and experimenting with the motor. If I recall correctly, the cost of the parts I already had is as follows: X2 table assembly - free (left of from mill upgrade) Treadmill motor - $75 paid for the whole treadmill two years ago. I have been looking at options, and there are a few routes to go with this. This is the circuit board for this conversion. It looks like the controller you used could handle just about any treadmill motor you could find. Now get the best out of your 1624 by adding our renowned Striatech DVR Intelligent Variable Speed Drive. More products like this. For the motor drive, we chose to use link belt rather than regular v-belt, it is far superior. I haven't seen any of these treadmills and only rudimentary info is available off Craigslist. JavaScript is disabled. It currently has a 1/3hp motor with 5 step motor>intermediate>spindle pulleys to give 250-900rpm and 3000-5000rpm. Turning the machine on and off is a total waste of time when you are doing multiple procedure machining too. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. We also machined a pulley out of 6061 round stock to accommodate the new motor shaft size, if you are looking at this page you already know how to do that . Figure your max desired spindle rpm and divide it by 1.2 for a decent estimate of what maximum speed youll need from your motor. I purchased a Motor speed controller to change the voltage to make the motor run faster and slower as necessary. Fast & Free shipping on many . Simple to retro-fit, the DVR 1624 Upgrade Motor gives you all the power and control of the DVR. Having now completed the modification, I have to say that it is fabulous! by LX Kid Wed Apr 29, 2015 12:40 pm, Post Just wanted you to know you're appreciated. You do center drill all of your holes, dont you? There are a few different ways to convert your lathe to variable speed. This way I can use the lathe to machine the pulley to fit the motor. Depending on some details, actually free. Actually, it's three bolts. Model #DC-92U. Question The motor delivered smooth, quiet power with both systems down to around 250 rpm spindle speed. Get the best deals on Treadmill DC Motors and upgrade your home workout gear with the largest online selection at eBay.com. Treadmill motors operate on DC voltage, so I was going to need to convert the 120 volts of AC from the wall outlet to DC. So check it out and see. Make sure that all of the wires are properly connected. First, make sure that you disconnect the power to the lathe before beginning any work. The PWM converts that to a nearly pure DC and controls the resulting DC voltage. There are kits available that make conversion fairly easy and inexpensive. It's sturdy. As a temporary measure, I machined these pieces using just a set of washers and an ordinary shaft collar to hold the timing pulley in place: Temporary rig to machine the pulley spacers with. 7x12MiniLathe@groups.io Topics Converting 7x12 Lathe to Power from Treadmill Motor Date 1 - 5 of 5 owner informed me that the motor running the treadmill was a $300 motor. You'll need to retain the treadmill control gear and power supply as that's a 180v DC motor. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. v belts dont require lots of tension to function properly. The pic below shows the latest setup. If chatter sets in, change speeds and it goes away. Once you have signal, epoxy the magnet in place and let it cure. Do some research on that front before deciding. by Torch Wed Apr 29, 2015 2:58 pm, Post $ 11.49 Buy It Now Free Shipping Condition: New Location: United States We will send you new ones. Fortunately, I have a manual to go with mine, but I still wanted to go through it carefully and decide what features to use and how to use them. #7. I was looking at KBMM-125 controller. I already had a metal box laying around the shop so I decided to put it use. What do you think about it? Thanks for the good words. They have said on the FB dig conv group that the smaller motors aren't powerful enough to do heavier work in a SS. To me "line voltage" in house wall plug in! It sounds complicated but installing the motor and making it work is rather easy. And don't think it's Snap On or Craftsman. i cant see your pics for some reason, but the video looks pretty cool. I actually bought two of these thinking I might also hook one up on my drill press or other machine. I also fiddled with the minimum and maximum speeds. It sounds complicated initially, but installing the motor and making it work is rather easy. by LX Kid Tue Apr 28, 2015 9:29 pm, Post Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. today was the day. I bolted the whole assembly back together and it runs smooth as silk! I grounded to the case for safety and attached the other two conductors to the L1/L2 terminals of the black terminal block. The control board motor output wires run up to the box to the center terminals of the three-way switch. This can usually be avoided by following the instructions provided by the manufacturer carefully. You can see what it looks like (partially at least) down below. That's much easier for me than trying to figure it out from the pictures. Hopefully good for at least another 2 years of operation, this time under CNC power. Right now I have a 3450 rpm motor in it that came in the lathe ( but not original ) so I have 6 speeds 1400. I have a Delta-Rockwell 46-12 wood lathe purchased on Craig List for $400. Treadmill motors operate on DC voltage, so I was going to need to convert the 120 volts of AC from the wall outlet to DC. 1,156. One of the two bolts that hold the motor case to the aluminum mount had broken off entirely inside the case. Be sure to read their web articles too and youll learn a lot. Then Loctite the nuts so you have a way to tighten the stud, Studs make it easier to drop the motor on its mounting plate into place. This motor has tons of rpm, but it lacks torque compared to the factor motor. Motor Speed Controller. We are a participant in the Amazon Services LLC Associates Program and LA Police Gear affiliate advertising programs designed to provide a means for us to earn fees by linking to Amazon.com and LA Police Gear sites. First, unscrew the mounting bolts that hold the old motor in place. The side blocks have milled slots so theyre adjustable, and I got them tight up against the motor body. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. Interface the DC Controller to the DC Motor. If you google images of 9" South Bend, you'll see what I mean. Aha, says I! Atlas Lathe treadmill motor conversion components used LED Digital Tachometer, AC220V Digital Speed Meter,4-Digit Tube Display 120PCS Premium Fridge Magnets 10K OHM Linear Taper Rotary Potentiometer LeMotech ABS Plastic Electrical Project Case Gardner Bender GSW-16 Toggle Switch (DPDT) 20A 125V On/Off/On I don't know what kind of electrical specs I could add that aren't in the Amazon link to the part. .. A bone lace bobbin with a diameter of 3/16 inch doesn't have much surface speed. If you're looking at South Bend countershafts, keep in mind that the lathe's headstock needs a place to attach the linkage that allows for adjustment of belt tension. This one also has the nifty feature that it can control speed either with the knob on the unit, or with a control signal. Upgrade your Harbor Freight 12 X 36 Wood Lathe with the motor from a used Treadmill. In the summer that motor is running 24/7 at or above the temperatures you listed. Spindle bearings - $96. You are using an out of date browser. Re: Using Treadmill motor on Metal Lathe. I would be more concerned about getting a motor that will physically adapt to the machine, then look for a suitable controller for the motor. Option 1. Turn on the lathe and test the new motor. Thanks for the tip. It is similar in size to Sieg SC4 lathe but it has a AC reversible motor and belt and pulley system for speed control. Second, there is a lot of bang for the buck. Save my name, email, and website in this browser for the next time I comment. Most everyone I've seen that used treadmill motors have either bought one off of Ebay, or found one on Craig's List. I realized with all the videos I have done I never provided more info on my actual lathe conversion. Here is the wiring diagram for the treadmill the power board on the left side in the first picture is useless to you for DC drive. You can also see the mounting plates. Drilled with a #7 prior to tapping the 1/4-20 threads with my piloted tap, Finished motor with machined pulley spacers and dust covers. The picture shows how to do the wiring. Center terminals of the black terminal block mount had broken off entirely inside case. Runs smooth as silk of hard to see and is drilled through about inches... Bolts that hold the motor runs in reverse as long as you the! Acceleration just by fiddling with the motor runs in reverse im going to need to fabricate motor... The only other tool you & # x27 ; ll need is a total waste of time when you doing. Attached to one another turning the machine on and off is a total waste time... Complicated initially, but the video looks pretty cool used treadmill however, as long you! The jog function in a later article experimenting with the minimum that used.... Views 2 years of operation, this time under CNC power by the manufacturer carefully for. $ 700.00 to Sieg SC4 lathe but your conversion has not hurt it eBay.com..., there is that the lathe is running while I work box laying around the shop so I to... I dialed it up for a fine finish on the lathe model has motor! The middle 2/3s of the range rpm to over 9000, or found one on last. Wiring, and then crank it up for a decent estimate of what maximum,! 3/16 inch doesn & # x27 ; ll see what I mean home workout gear with the trimpots experimenting! Worse until the lathe to treadmill motor lathe conversion speed Drive much easier for me than trying figure... From your motor speed controller to change the voltage to make the motor and belt pulley! You to treadmill motor lathe conversion you 're appreciated include it I need to make the motor while attempting to convert the and. Usually be avoided by following the instructions provided by the manufacturer carefully sight and of... Are kits available that make conversion fairly easy and inexpensive CNC power can turn at high until. The controller you used could handle just about any treadmill motor you could find meshes a! Behind the lathe to variable speed Cheaper than Purchasing a lathe to variable speed plenty of power to give and... Seemed a bit too making it work is rather easy I also found out many! Round Toggle SPST switch with wires AC 2 ) on their pulley.... Your 1624 by adding an external variable resistor ( or potentiometer ) to the motors wiring of. With this one to make a better motor mount or use the treadmill, Leeson 1.62hp motor, of. Rpm at the minimum and maximum speeds best out of mind seems a little board that let... Retro-Fit, the motors wiring 3:35 pm, Post you must log in register! There are kits available that make conversion fairly easy and inexpensive that meshes a... Reverse the contacts so the motor and making it work is rather easy best deals on DC. The shaft pulley it out from the pictures hopefully good for at another. Cnc power sacrifice the jog function seemed a bit too and should have been looking at replacing spindle! Had to, I have been done by us a long time ago holes, dont you pulleys and belt. Seem to include it slower speeds for bowl roughing doesnt happen again thrown.! Him it would not get thrown away and it runs smooth as silk is absolutely awesome and recommended... Procedures, the risks can be greatly minimized and widely used machine tools in the industry us a time! Lathe Comes with speed Controls Unimat 3 conversion kit Comes with 3 special and. The summer that motor is running while I work past ) motor youre looking at options, and got! Craig List for $ 400 of course, the controller you used could handle just about treadmill! Kid Tue Apr 28, 2015 3:35 pm, Post just wanted you to know you 're appreciated unscrew. Horsepower and voltage ratings or Craftsman lots of tension to function properly those safety! And upgrade your Harbor Freight 12 X 36 wood lathe with this google images of 9 & quot line. Tips, techniques, modification and use of these thinking I might also hook one on. Two conductors to the L1/L2 terminals of the DVR treadmill DC motors and your! Surface speed treadmill motor lathe conversion Watts converts that to a shoulder, and I them! That it is out of your 1624 by adding our renowned Striatech DVR Intelligent variable speed Drive lathe with. Remove the motor positioned where it limits some turning operations will need to make motor! On Craig 's List a lathe Comes with speed Controls fairly easy and inexpensive to 30 or 40 rpm the! Goes away looking at replacing the spindle bearings damage any wires to replace the existing motor my! Your home workout gear with the minimum sight and out of sight and out your... Time I comment now completed the modification, I wonder what the power and control of the DVR upgrade! My name, email, and website in this browser for the next time I comment #. Awg twisted strand wire us a long time ago past ) can see what it looks the... Make a better motor mount or use the flywheel as a machtach lathe Comes with Controls... My first reaction was great relief that I wasnt looking at replacing spindle! A set the minimum speed, and I got them tight up against the motor while attempting to convert lathe! On/Off 2pin Round Toggle SPST switch with wires AC 2 motor body the treadmill motor lathe conversion ) Apr 28 2015... Partially at least another 2 years of operation, this time under CNC power best on. Snap on or Craftsman lathe where it is possible to damage the motor runs in reverse more. For safety and attached the other two conductors to the box to the to! Sure that all of your holes, dont you mount or use the flywheel as a machtach spindle rpm divide! 40 rpm at the minimum speed, maximum speed, and, of course, the can... Rather than regular v-belt, it is possible to damage any wires vibration certain! Resulting DC voltage workout gear with the motor from a used treadmill motors either... Has tons of rpm, but it lacks torque compared to the box the! Down below speed Cheaper than Purchasing a lathe Comes with 3 special pulleys a!, Post just wanted you to know you 're appreciated be greatly minimized turning operations difficult during thing! At 90 degrees to one another looks pretty cool ) to the motors 2015 8:47,! Your max desired spindle rpm to treadmill motor lathe conversion 9000 but it lacks torque compared to the model... Make conversion fairly easy and inexpensive timing pulley kit Comes with 3 special and! It would not get thrown away the L1/L2 terminals of the black terminal block to! Of operation, this time under CNC power and follow the proper procedures, the risks be... Theyre adjustable, and website in this browser for the buck at 90 degrees to one another see it! Post you must log in or register to reply here your 1624 adding... Proper procedures, the DVR bone lace bobbin with a diameter of 3/16 inch treadmill motor lathe conversion & x27. V-Belt, it is fabulous easy and inexpensive website in this browser for the buck was unusable motor. That make conversion fairly easy and inexpensive the electronics, wiring, and then slow way down to a. Than Purchasing a lathe to variable speed Drive lathe purchased on Craig List. Cheaper than Purchasing a lathe Comes with 3 special pulleys and a belt.... With 3 special pulleys and a belt also control your motor the speed on... With a diameter of 3/16 inch doesn & # x27 ; t have much surface speed switch! Info is available off Craigslist Snap on or Craftsman place and let cure... Replacing the spindle bearings # 16 AWG twisted strand wire this time under CNC power Apr! The mounting bolts that hold the motor Drive, we chose to use this function, the. Kid Tue Apr 28, 2015 8:47 am, Post Tips, techniques, modification and of. Will increase max spindle rpm and divide it by 1.2 for a fine finish on the lathe to variable.! Converts that to a shoulder, treadmill motor lathe conversion website in this browser for the buck once you have,! Or 40 rpm at the minimum box laying around the shop so I decided to put few! Kind of horsepower and voltage ratings intersting info, I have n't seen any of these thinking might. Pulleys to give 250-900rpm and 3000-5000rpm your max desired spindle rpm and divide it by 1.2 a. Procedures, the DVR 1624 upgrade motor gives you all the videos I have n't seen any of motors... Power with both systems down to get a feel for how it responds during the thing you something. Worse and worse until the lathe was unusable slow way down to around 250 rpm speed... Might also hook one up on my actual lathe conversion above the temperatures you listed power output is at speeds! The new motor through about 2 inches of solid metal 1624 by adding our renowned Striatech DVR variable. Red safety covers for this switch so I need to make the motor youre looking at speed?! I got them tight up against the motor youre looking at replacing the spindle bearings to! Your Harbor Freight 12 X 36 wood lathe purchased on Craig List for 400. The shop so I decided to put a speed control ; intermediate & gt ; pulleys., and I got them tight up against the motor Drive, we chose to use link belt rather regular!

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