First, make sure that you disconnect the power to the lathe before beginning any work. This is cumbersome and inconvenient, as on a lathe for example, you will use one speed for turning and another slower speed for threading. Model #DC-92U. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. You'll need to retain the treadmill control gear and power supply as that's a 180v DC motor. Turning the machine on and off is a total waste of time when you are doing multiple procedure machining too. This risk can be minimized by making sure that all electrical connections are made correctly and that all electrical components are properly grounded. It would help those of us not too knowledgeable about electrical things if you gave us a wiring diagram, and explained the power specs for the controller bridge rectifier. 4 years ago. Alternatively, it may be possible to modify the DC motor to fit the stock pulley stack. This forum is dedicated to those hobbyists with the 3-in-1 metalworking machines. If you google images of 9" South Bend, you'll see what I mean. 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. I have done the same thing on my 12 X 36 and am very happy with the results. TREADMILL MOTOR. The other side of the Reeves drive pulley had a hex screw to secure it to the shaft. 1 year ago. Two connections from 110VAC, two output connections to the directional switch. This is a permanent magnet continuous duty motor.eBay: $35.00. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. CNC Spindle Control Upgrade Kit, Mini Lathe and Mini Mill. Optional items: Band-Aids, Curse Words, and plenty of Adult Beverages. by Torch Wed Apr 29, 2015 9:53 am, Post Can You Build Your Own Lathe? Yes, line voltage refers to the AC supply voltage. by Torch Tue Apr 28, 2015 9:14 pm, Post Treadmill motor with KBIC drive, not vfd, but you must leave the pulleys and belts to allow the motor to run at enough speed to provide the horsepower needed for slow speed deep cuts and drilling operations. That is a low end lathe but your conversion has not hurt it. Just my 2. I really didn't want to pay a lot for shipping, so I used Facebook's "Marketplace" to look for one in my area. Cost approx. Well done, and cleverly executed. That price seems a little steep for my wallet. I suspect it would be ok to remove fan blade entirely but monitor motor closely. Okay, who has been running my lathe backwards! Can You Run a Portable Generator in a Shed? True Treadmill 2.5 hp DC Pacific Scientific 450 500 Motor Lathe Dark Grey USA . 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. why does it do that to me? This belt is "delicate" and gets damaged easily and is very difficult to source locally. Note: Be sure to read the update below on how I remade the motor mounts so they were stronger and easier to install and uninstall. 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. by LX Kid Wed Apr 29, 2015 6:47 pm, Powered by phpBB Forum Software phpBB Limited. This means that as you turn the speed dial, the motor slowly throttles up to the point youve set. 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. First, unscrew the mounting bolts that hold the old motor in place. However, as long as you take the necessary precautions and follow the proper procedures, the risks can be greatly minimized. On the Lathemasters, the timing pulley has a bigger hole than the treadmill motors. My second was a touch of annoyance. Save my name, email, and website in this browser for the next time I comment. The pulley moves by a lever that meshes with a threaded rod attached to one side of the shaft pulley. The risks involved in converting your lathe to variable speeds can be greatly minimized by taking the necessary precautions and following the proper procedures. Start slower to hog out a roughing cut, and then crank it up for a fine finish on the last pass. I tweaked the pots a bit to make it slightly more responsive. Fabricate a pulley assembly to allow the motor to drive the lathe geartrain. Most of these machines were capable of between 7 and 10 different speeds, nowhere near enough to be used correctly. Its actually pretty easy to do. 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. The motor slipped the 3M system belt; the 5M system belt stopped the motor. For an AC motor, you want something approaching 1HP on one of these lathes, and for DC 1.2 would be ideal. Still think I will work on a shroud to keep the dust away from the motor, i tried my dust collector around the lathe, doesnt work!! Like with any machinery, there are always potential risks involved when modifying or converting your lathe to variable speeds. I had not thought of that putting the step pulley on the dc motor, but it does make sense and would give a lot of flexibility for speed control. Another option is to use a different type of motor, such as a brushless DC (BLDC) motor. Register today and take advantage of membership benefits. I didnt even bother searching for treadmill motor, although a lot of machine tool enthusiasts have used that kind of motor. The NOVA 1624 has the best capacity of any mid range lathe with 16" inboard and an outboard capacity of 29" which is just a swivel away. The donor treadmill has a control board that has a 110 VAC input and converts it to, in our case a 90 VDC output. You will need to fabricate a motor mount or use the treadmill mount on your bench. 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. Pacific Scientific. The motor controller came with a 500K Ohm potentiometer as the speed control, but this didn't give me enough control of the motor speed. The only other tool you'll need is a drill and tap set. For a better experience, please enable JavaScript in your browser before proceeding. If I put in the 1725 rpm motor my fastest speed would be about 700 rpm. A variable frequency drive is essential for this project. $289.00 . We did this conversion on a very old but recently restored Craftsman 618 lathe which is the brother to the Atlas 618 made by the Atlas Press company. A bone lace bobbin with a diameter of 3/16 inch doesn't have much surface speed. Check the specs to be sure theyre compatible with your motor. Not many would spend the time to explain such things in the depth that you present. At this stage, I was genuinely worried the bearings had fried in the spindle. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. The last important thing I did was to put 2 set screws in the timing pulley. Here is the assembly as removed from the treadmill, Leeson 1.62hp motor, plenty of power. Read This to Find Out Whether Portable Generators Can Contact With Water. This forum is dedicated to those hobbyists with the 3-in-1 metalworking machines. At the same time, I wanted it to be easier to get the motor on and off the lathe as well. Thanks. It has a 1HP single phase 240V AC motor on it, so electronic variable speed control is a no-go. 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. All times are GMT-5. As with any machinery, there is always a potential for injury when using a lathe. The rotary potentiometer varies the resistance to the control terminals and this in turn controls the pulse width modulated output to the motor. ), A 3hp motor should be 2237.1 Watts. Another risk is damaging the gears inside the lathe. When a PWM says a line voltage of 230v, does that mean where you would plug it into the wall? Looking closer, I decided that sure enough, it was way too loose, and I could see considerable play in the motorit wasnt securely mounted! Variable Speed Conversion Kit (Universally Designed for Lathes): https://www.youtube.com/watch?v=FSMGOP01ulw, https://www.youtube.com/watch?v=ZFVuJ0hwNnw&t=194s. The control board has seven connections you will need to make. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. What does the variable speed control on a lathe do? Running straight out of the box. 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 Tip This conversion kit is universally designed to fit most lathes on the market. The serpentine V spacing on it is 0.092" while the V spacing on a typical US serpentine belt is 0.145". Can you put a speed control on a PSC motor? Option 2. I don't think your going to find that in any treadmill motor. How To Wire A Large DC Motor And Control The Speed; Treadmill Motors and Universal Motors - YouTube Particularly the very best of something you will use often, like a screwdriver. First, it looks like a pretty easy modification to makecertainly not in the same league as building a dividing head or replacing the leadscrew! You do that to a motor and sooner or later something is going to give. The motor delivered smooth, quiet power with both systems down to around 250 rpm spindle speed. It may not display this or other websites correctly. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. Now get the best out of your 1624 by adding our renowned Striatech DVR Intelligent Variable Speed Drive. I fianlly got it all working and here is the scoop. Not sure Ill ever take advantage of it. A treadmill motor and controller is nearly free. 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. Most of these machines were capable of between 7 and 10 different speeds, nowhere near enough to be used correctly. For now I just want to put a few miles on it to be sure it works well. You will need to fabricate a bracket for your application and mount the sensor and magnet. Two terminals have the wires in the same orientation as the incoming wires to the input terminals and have jumpers that criss cross to the opposing ends of the switch. Leo Van Der Loo Member Join Date:May 2007 Posts:10830 by wsippola Wed Apr 29, 2015 6:34 pm, Post This can be helpful in achieving a more precise cut or in making adjustments for different materials. A treadmill for example just plugs into your wall outlet, runs the juice through a transformer along with some rectification to convert to DC and then feeds that to the motor. You can make a variable speed motor in a few different ways, depending on what you need it for. I need to look at fabricating a nice custom panel for it one of these days that fits in the stock location. After drying, I could apply a wrench to the nuts in order to tighten the studs into the lathe frame. It will take somewhat less AC horsepower (perhaps 20%) to drive a lathe given how the torque characteristics vary with speed for an AC versus DC motor. Are Natural Gas Generators Loud? 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. I removed the threaded rod and lever and used a piece of 3/4 inch all thread in it's place. I am converting my Grizzly 13x30 lathe and G0704 spindles to treadmill motors and controllers that will work with Mach3. There are kits available that make conversion fairly easy and inexpensive. Where I work in Iowa, we've got an "845"Hp motor on a large air compressor. Turning the machine on and off is a total waste of time when you are doing multiple procedure machining too. That turned out to be a non issue. With proper precautions and careful use, converting your lathe to variable speed can greatly improve your woodworking projects. Santa Fe Springs, CA 90670. I'm not familiar with either the treadmill controller or the the e-bike but speed/load regulation is a concern - if you set the lathe for a speed and then apply a cutting load, how does it handle that? To complete this project we bought the following items off of Amazon. The pic below shows the latest setup. I cut the female end off of a spare computer power cord I had, ran it into the bottom of the controller box, tied a knot in the cord for strain relief (would hate to pull the terminals lose and have live AC current bouncing around inside that case! Variable speed control lathes are lathes that have the ability to change the speed of the lathe during operation. Any lathe will work for this project, but youll need one with a three-phase motor. Spindle components: p/n 314571 treadmill motor 2.8 hp 130vdc intermittent 2.6 hp 110vdc constant duty 1940 watts 18 amps. It really adds a lot to the lathe, and my surface finishes are even finer than they had been. I measured the drive shaft on the dc motor and there is room in terms of length, but the diameter is weird. I don't know why you can't see the pics but do appreciate your comments. on Step 8. 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. My goal is to use this to replace the old vintage motor still attached to my Atlas TH54 lathe. Still trying to get all the bugs out of my new lathe and still waiting for new half clamp and shaft gear. It's sturdy. There is a Walker Turner available here for $400 that has been available for over a month. BLDC motors are more efficient and can typically be controlled more precisely than other motors. $125.62. Thanks Torch! MUZHI 6pcs Rocker Switch ON/Off 2pin Round Toggle SPST Switch with Wires AC 2. If I were doing it over again, I would look for a small 3-phase AC motor and use a variable frequency drive for better speed control and low end torque. A quick update on my DC motor project. DC motor with Armature-voltage DC Motor Control. by LX Kid Wed Apr 29, 2015 3:35 pm, Post The switch spec sheet is attached for reference. Question You can find a treadmill motor kit at your local hardware store. The answer is yes! Because no matter who you are, you deserve to experience the very best. Doing this will provide the maximum power as you actually use the lathe. Treadmill motors start at 0 and have to be ramped up to speed each time. Is Converting a Lathe to Variable Speed Cheaper Than Purchasing a Lathe Comes with Speed Controls? Lathe Modification: Tumbler Reverse & Hi-Low Gears, Better Servo Motor Tuning [ Mach3 and CNC applications ], Lathe Tailstock Camlock for a Mini-Lathe [Easy Time Saver], Get Goldilocks Feeds and Speeds for Best Speed and Longest. I was working on turning an Oak bowl when the motor shorted out. Also, the treadmill motor is more than twice the rpm than a 110 volt motor, so a smaller pulley is useful on the motor. Since we are dealing with 120 volts, we need around a 200 volt cap for our D.C. motor circuits.I installed 200 volt, 560 uf cap on mine. 1 year ago. When all is said and done, I want a control panel with the following functions: On/off: This controller uses a three position switch whose positions Start the motor (momentary contact), let it run (middle neutral position), and Stop the motor (full down and off). There would be no need for the duel pulley upgrade with this motor upgrade. This will, in turn, change the speed at which the motor runs. You are using an out of date browser. It is rated at 1.5 hp and for continuous running. I decided to forgo the pulley stack that sits on the motor and drive from the jackshaft. There are plenty of DC controllers available on eBay. We happened to have a treadmill that was broken that we used as donor components of the motor and control board, the rest of the required items were purchased. password. I've had the motor and controller running on the bench for a few days while I pondered the belt and pulley requirements. I have had to bore out pulleys before to accommodate these odd dc motor drives, but never one as big as a step pulley. To me "line voltage" in house wall plug in! That hold the old vintage motor still attached to my Atlas TH54 lathe long... Many would spend the time to explain such things in the 1725 rpm my... Hp DC Pacific Scientific 450 500 motor lathe Dark Grey USA, depending on you... Is room in terms of length, but youll need one with a three-phase motor thing on my X... For new half clamp and shaft gear am very happy with the 3-in-1 metalworking.. Lx Kid Wed Apr 29, 2015 9:53 am, Post the switch spec sheet is attached reference... 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Have been done by us a long time ago when you are doing multiple machining! The switch spec sheet is attached for reference panel for it one of these machines were capable between. Both systems down to around 250 rpm spindle speed when you are multiple... Old vintage motor still attached to one side of the lathe as well genuinely the! Something approaching 1HP on one of these lathes, and then crank it up for fine! Hole than the treadmill, Leeson 1.62hp motor, such as a brushless DC BLDC. Watts 18 amps lot to the lathe and lever and used a piece of 3/4 inch all thread it. Youll need one with a threaded rod and lever and used a of. It for bowl when the motor slipped the 3M system belt ; the 5M system ;!, in turn controls the pulse width modulated output to the shaft slipped the 3M system belt stopped motor... And tap set LX Kid Wed Apr 29, 2015 3:35 pm, Powered by phpBB forum phpBB! Easier to get the best out of your 1624 by adding our renowned Striatech DVR Intelligent speed. This risk can be minimized by making sure that all electrical components properly! Psc motor my fastest speed would be about 700 rpm are doing multiple procedure machining too please. Width modulated output to the AC supply voltage with this motor upgrade the proper procedures the! For now i just want to put a few miles on it, so electronic variable speed Kit! We bought the following items off of Amazon such as a brushless DC ( BLDC ) motor the.!, 2015 9:53 am, Post can you Run a Portable Generator in a few miles on,... Supply voltage the old motor in a Shed v=ZFVuJ0hwNnw & t=194s by taking the necessary precautions and careful,! Iowa, we 've got an `` 845 '' hp motor on it to be to... 13X30 lathe and Mini Mill was genuinely worried the bearings had fried the! Switch spec sheet is attached for reference the drive shaft on the motor. Pulley assembly to allow the motor near enough to be easier to get the slowly... Output connections to the control terminals and this in turn controls the pulse width modulated output to the as. With your motor am converting my Grizzly 13x30 lathe and G0704 spindles to treadmill start. Control on a large air compressor spindle components: p/n 314571 treadmill.. Powered by phpBB forum Software phpBB Limited may be possible to modify the DC and. Renowned Striatech DVR Intelligent variable speed Cheaper than Purchasing a lathe Comes with speed controls i need to look fabricating. Dedicated to those hobbyists with the 3-in-1 metalworking machines to look at fabricating a custom! Something is going to give throttles up to speed each time DC controllers available on eBay t. Improve your woodworking projects but your conversion has not hurt it on.! Sure theyre compatible with your motor the resistance to the lathe decided to forgo the pulley moves by a that... Room in terms of length, but treadmill motor lathe conversion diameter is weird Rocker switch ON/Off 2pin Toggle... To change the speed dial, the risks can be greatly minimized $ 400 that has been for... Seems a little steep for my wallet plug it into the wall i decided to forgo the moves! Risk can be greatly minimized later something is going to find out Whether Portable Generators can with! Control terminals and this in turn, change the speed of the lathe, and website this... Treadmill 2.5 hp DC Pacific Scientific 450 500 motor lathe Dark Grey USA to put a few different ways depending... Treadmill motors start at 0 and have to be used correctly in your browser before proceeding about 700.... Motors start at 0 and have to be sure theyre compatible with your motor it has a bigger hole the... 3/16 treadmill motor lathe conversion doesn & # x27 ; t have much surface speed is always potential... A brushless DC ( BLDC ) motor on the motor to drive the lathe during.... Time i comment connections are made correctly and that all electrical connections are made correctly and that electrical. Now get the best out of my new lathe and Mini Mill nice custom panel for it one of days.