Can You Build Your Own Lathe? I haven't seen any of these treadmills and only rudimentary info is available off Craigslist. Eventually, the vibration started to get worse and worse until the lathe was unusable. There would be no need for the duel pulley upgrade with this motor upgrade. Be sure to read their web articles too and youll learn a lot. This arrangement is typical of most older treadmills and the preferred circuit board type for simple power tool conversions. 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. Mill-Drill-Lathes. One of the two bolts that hold the motor case to the aluminum mount had broken off entirely inside the case. Also, the treadmill motor is more than twice the rpm than a 110 volt motor, so a smaller pulley is useful on the motor. With old consumer grade metal lathes, drill presses, drill mills and milling machines, they were powered by an 110v AC motor that ran one speed, usually 1725. A bone lace bobbin with a diameter of 3/16 inch doesn't have much surface speed. New 2.5 HP 130VDC 10A 4500RPM CW rotation Treadmill Replacement Motor. Read This to Find Out Whether You Can Run a Portable Generator in a Shed. I dialed it up to 30 or 40 rpm at the minimum. You do center drill all of your holes, dont you? Look around for an old treadmill. Turning the machine on and off is a total waste of time when you are doing multiple procedure machining too. The motor delivered smooth, quiet power with both systems down to around 250 rpm spindle speed. (My brain told me to buy a 5k instead of 500 ohm as suggested. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. 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. Follow the manufacturers instructions carefully when conversing or repairing your lathe. We will cover the conversion of a larger Atlas 1236 model 3996 lathe in a later article. How to fit a DC Treadmill motor to a wood lathe WITH SPEED CONTROL! Fabricate a mounting bracket to attach the motor to the lathe. If chatter sets in, change speeds and it goes away. There are different techniques for you to get this done. ha) Used a little dc power adapter to supply ~6 vdc to the pot, in place of the red wire. 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. Surface Feet Per Minute represents the "ground speed" of the wood going past your cutter. Second, there is a lot of bang for the buck. for some reason i thought you were working on a beaver 3400, There is a 3400 here at a pawn shop for $221,but it looks like a newer one as it is a Rockwell Beaver. "But", I hear you say, "I thought you said it had to be DC voltage?" Well, you're right. It fit very nicely on the motor controller. Visual Explanations: https://www.youtube.com/watch?v=FSMGOP01ulw. You already have it, and I don't think the difference with a PWM controller is going to be significant enough for the additional expense. I swapped the flywheel pulley to the other end of the shaft and used a v-belt pulley in its place. Lathes are one of the most versatile and widely used machine tools in the industry. 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. Maybe that has something to do with it. So check it out and see. today was the day. The plan is to replace the existing motor on my lathe with this one. This will be used to connect the VFD to the lathes motor. Can a Portable Generator Get Wet? What Safety Precautions That You Should Follow When Converting a Lathe to Variable Speed? The same bracket will be set up to eventually accomodate a DRO. Above that temperature they want to see some type of air conditioning for the equipment. I switch the control between my drill mill and my lathe, the control has forward and reverse as well as a machtach. While not the cheapest option but probably not priced terrible by the time you chase everything down. The PDF covering our board is below for reference to help you understand the process, it has an illustration and instructions as to how to wire it. Answer Theres a lot to clear away to get at the motor mounts very easily. I hope it works for you. Once I was convinced. Take a look at what Im using: Reliable Electric DC-2 Variable Speed Motor Controller. Some minilathe owners have upgraded the drive by using treadmill motors. Opinions? First, make sure that you disconnect the power to the lathe before beginning any work. the as well. That price seems a little steep for my wallet. An external fan that directs a flow over motor may be needed for extended turning times. It may not display this or other websites correctly. Second, there is a lot of bang for the buck. I didnt even bother searching for treadmill motor, although a lot of machine tool enthusiasts have used that kind of motor. by Torch Wed Apr 29, 2015 6:24 pm, Post Likewise, the maximum is 4000 rpm, and this is on a lathe whose old motor had a 1725 rpm maximum. That turned out to be a non issue. If youre not sure which method would be best for your particular application, its always best to consult with an expert before proceeding. The rotary potentiometer varies the resistance to the control terminals and this in turn controls the pulse width modulated output to the motor. I love this idea! 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. He is great. $289.00 . the Powerpro motor is pretty robust to get 250-10000 RPM. 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. The 250 rpm I can not use because they do not recommend faster than 200 rpm in back gear. For clarity's sake that is not a drum switch, it is a double throw toggle switch. 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. $ 11.49 Buy It Now Free Shipping Condition: New Location: United States We will send you new ones. It's safe to say the hp rating on treadmill motors is actually about 1/2 to 3/4 at best of what's advertised. The variable speed control on a lathe allows you to adjust the speed of the spindle, which in turn affects the speed at which the cutting tool is moving. That's much easier for me than trying to figure it out from the pictures. Follow the instructions that come with the treadmill motor kit to install the new motor and the controller using the wiring kit. Aha, says I! 97. Check the specs to be sure theyre compatible with your motor. Upgrade your Harbor Freight 12 X 36 Wood Lathe with the motor from a used Treadmill. Are There Any Potential Risks of Converting Your Lathe to Variable Speeds? 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. Cap'n Eddie was my go to guy when I was starting to figure out ways to cut down on my scrap wood pile. The motor is rated at 845Hp at 100% service factor, to get the rated performance out of the air compressor the motor has to deliver about 900Hp, or about a 110% service factor. CNC Spindle Control Upgrade Kit, Mini Lathe and Mini Mill. by LX Kid Tue Apr 28, 2015 8:47 am, Post 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. if you can install the origanal 4 speed motor pulley on the dc motor, you can mount the motor rigidly. I decided to sleeve the timing pulley with some copper pipe I had sitting around so it would be more nearly concentric on the shaft: I also shortened the key so it only runs under the timing pulley. Most of these machines were capable of between 7 and 10 different speeds, nowhere near enough to be used correctly. Compatible with SIEG SX2 and HiTorque mini mills. If I put in the 1725 rpm motor my fastest speed would be about 700 rpm. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. With a nut and lock washer on each side of the headstock, that pulley wasn't going anywhere. Well, you're right. Next, remove the belt from the lathe. Torch Posts: 1669 Joined: Wed Mar 17, 2010 12:58 pm . Its also fair to say that we hear a vocal International voice against the DC motor approach because for some reason they dont seem to be able to get reasonably priced controllers that will work with their AC (mains) power standards. $57.18 shipping. At the same time, I wanted it to be easier to get the motor on and off the lathe as well. 1,156. Interface the DC Controller to the DC Motor. So I scored a free treadmill recently. 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've had the motor and controller running on the bench for a few days while I pondered the belt and pulley requirements. They have said on the FB dig conv group that the smaller motors aren't powerful enough to do heavier work in a SS. It was another great modernization improvement, ease of changing tools during different machining steps is a breeze. 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. So I scored a free treadmill recently. Converts brushless DC drive to CNC control. You can find a wide variety of these online or at your local hardware store. I have a Harbor Freight 12 X 36 Wood Lathe. 700 , 545, back gear 250 , 145 , 55 . JavaScript is disabled. The bearing housing at the brush end runs very hot. What Will a 3000 Watt Inverter Generator Run? 4000 seemed a bit much, so I scaled that back a bit too. kaustin | Posted in Turning and Carving on July 4, 2009 03:14am. Lathe Modification: Variable Speed Treadmill DC Motor, Reading over the various potential modifications, I decided the DC motor needed to come fairly early in the process for several reasons. I have a Delta-Rockwell 46-12 wood lathe purchased on Craig List for $400. Also know I'll have to select pullys and belts, digital readout, etc. How To Wire A Large DC Motor And Control The Speed; Treadmill Motors and Universal Motors - YouTube However, as long as you take the necessary precautions and follow the proper procedures, the risks can be greatly minimized. Reason I ask is I found a 2HP motor, treadmill with 110v line, and that's the PWM's requirement for line voltage. In case I ever need to put the AC Motor back, here are the connections. 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. I grounded to the case for safety and attached the other two conductors to the L1/L2 terminals of the black terminal block. Save my name, email, and website in this browser for the next time I comment. When a PWM says a line voltage of 230v, does that mean where you would plug it into the wall? There have been some really bad motor controllers that couldn't handle that situation (hopefully all in the past). intersting info, i wonder what the power output is at slower speeds for bowl roughing. This is a pretty cheap mod when you buy the parts from surplus or eBay. Industry: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing , Personal and Household Goods Repair and Maintenance , Other Miscellaneous Retailers , Architectural, Engineering, and Related Services , Scientific Research and Development Services See All Industries, Measuring and controlling devices, nec, Repair services, nec, Direct selling establishments, Testing . May even see if I can arrange a different motor drive there as well? True Treadmill 2.5 hp DC Pacific Scientific 450 500 Motor Lathe Dark Grey USA . 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. by Torch Tue Apr 28, 2015 9:14 pm, Post I don't think your going to find that in any treadmill motor. 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 Well.. I chalked it up to some sort of odd resonance effect and learned to live with it. Recycled. To me "line voltage" in house wall plug in! At this stage, I was genuinely worried the bearings had fried in the spindle. Model #DC-92U. You can find a treadmill motor kit at your local hardware store. 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. With the treadmill conversion changing speeds or hitting the exact speed you need is as simple as turning a knob without turning the machine off, super convenient. I even got one of those red safety covers for this switch so I wouldn't flip it accidentally. 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. Read This Before Making, Simplified Steps of Making a Pool Cue Using a Lathe If you love playing pool, you know. The serpentine V spacing on it is 0.092" while the V spacing on a typical US serpentine belt is 0.145". by wsippola Wed Apr 29, 2015 6:34 pm, Post The only other tool youll need is a drill and tap set. This page was generated at 07:45 AM. I don't see pics either. "Great", I thought, "Now I will have to order one and wait on a slow boat from China". Regards Ian spro Posts: 8016 ), tinned the ends of the wires, and then attached some crimp-on spade connectors to the three conductors. I havent had occasion to use this function, but most folks seem to include it. Most of these lathes get down close to 1:1 (usually 1:1.2) on their pulley arrangements. The single most useful modification I have done to the lathe is to add a 2 HP (questionable) DC treadmill motor with variable speed drive that provides 5-3500 RPM. Also note the speed range on the motor youre looking at. I moved the power leads to the pwm board, temporarily bypassing the thermal protection switch. One warning about variable speed. The control board motor output wires run up to the box to the center terminals of the three-way switch. To be honest, the included magnet sucks, we replaced it with the magnet shown in the list above and it fixed our problem immediately. The second improvement was I made a couple of side blocks with a 45 degree angle milled on them to hold the motor so it couldnt rock laterally. Thanks Don and ninefinger for your replies. (I googled it.) The second one was the finished product.that you saw in the movie. In the words of Cap'n Eddie Castilin (Check out his YouTube channel).It's time to start "Makin' Shavin's". Step 1: Types of Treadmill Motors I have seen 3 types of motors. Hopefully good for at least another 2 years of operation, this time under CNC power. DC motors are also easy to find on eBay. For an AC motor, you want something approaching 1HP on one of these lathes, and for DC 1.2 would be ideal. 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. For testing, I will just use the front panel controls on the DRO and get things working as is. Some lathes will require you to drill and tap new mounting holes, but the instructions in the kit will show you exactly where to drill and tap. For an AC motor, you want something approaching 1HP on one of these lathes, and for DC 1.2 would be ideal. I will definitely keep the step pulley, and probably put a 3" pulley on the drive. Aha, says I! Variable Speed Conversion Kit (Universally Designed for Lathes): https://www.youtube.com/watch?v=FSMGOP01ulw, https://www.youtube.com/watch?v=ZFVuJ0hwNnw&t=194s. For good measure I added a tachometer so that I can tell what speed the lathe is running while I work. The second Im going to need to make a better motor mount so this doesnt happen again. Jog: A momentary contact that just bumps the spindle while held down. This means that as you turn the speed dial, the motor slowly throttles up to the point youve set. Santa Fe Springs, CA 90670. Turn on the lathe and test the new motor. TREADMILL MOTOR. Overall, converting a lathe to variable speed is usually cheaper than purchasing a new lathe with speed controls. By this time, I now owned a mill instead of just a drill press, so improving the situation was going to be straightforward. Next I wanted to make end pieces of to go on either side of the pulley to keep the belt in place and position the pulley on the shaft just right. Don't know when I'll do the mod but I'll get all the goodies together first and do a little more research on what the heck I'm doing. Simple to retro-fit, the DVR 1624 Upgrade Motor gives you all the power and control of the DVR. You can also see the mounting plates. by LX Kid Tue Apr 28, 2015 8:54 pm, Post v belts dont require lots of tension to function properly. Carefully remove the motor, ensuring not to damage any wires. Center drilling for the pulley set screw. The motor cooling does not keep up with high torque low speed cuts, you need to use the belts. 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. Mill-Drill-Lathes. Read This to Find Out Whether Portable Generators Can Contact With Water. At ~$122.50, this is easily the cheapest method to obtain a variable speed motor upgrade that doesn't involve the risk of buying used equipment off Craigslist, e-bay, or from a surplus supplier. Can You Run a Portable Generator in a Shed? So, I started looking at it and eventually noticed that the toothed timing belt seemed a little too loose. owner informed me that the motor running the treadmill was a $300 motor. Again, this can usually be avoided by following the instructions provided by the manufacturer carefully. To be honest, the included magnet sucks, we replaced it with the magnet shown in the list above and it fixed our problem immediately. Being able to change speed at the twist of the dial is a dream come true. - with a simple disconnect for when I don't need it? Thanks Torch! How cool is that? I already had a metal box laying around the shop so I decided to put it use. For 500 watt Brushless DC drive, 120V 60Hz. 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. Note: Some controls have a fancy electronically braked version of this. 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. Well.. Fabricate a pulley assembly to allow the motor to drive the lathe geartrain. 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 a low end lathe but your conversion has not hurt it. In their place I used jumper wires to a 5k linear pot. 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. The link belt is easy to adjust size as necessary and it also does not hold a set like regular v-belts which cause machine vibration and chatter in small lathes. At the same time, I wanted it to be easier to get the motor on and off the la. Get the best deals on Treadmill DC Motors and upgrade your home workout gear with the largest online selection at eBay.com. Thanks for the tip. Some of the add-ons on this site are powered by. This is a permanent magnet continuous duty motor.eBay: $35.00. Spindle bearings - $96. Having now completed the modification, I have to say that it is fabulous! 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Always best to consult with an expert before proceeding ( hopefully all in industry! Purchased on Craig List for $ 400 you new ones 12:58 pm time I comment the movie motor!