treadmill motor lathe conversiontreadmill motor lathe conversion

Well.. Visual Explanations: https://www.youtube.com/watch?v=ZFVuJ0hwNnw&t=194s. You must log in or register to reply here. 4 years ago. The bearing housing at the brush end runs very hot. There are many benefits to using variable speed control. Thanks, I will keep my eye open for one. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. 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!! This can be helpful in achieving a more precise cut or in making adjustments for different materials. 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. "But", I hear you say, "I thought you said it had to be DC voltage?" Now get the best out of your 1624 by adding our renowned Striatech DVR Intelligent Variable Speed Drive. Here is the link, Inspiring Media Inc. o/a Canadian Woodworking. I started noticing vibration in certain speed ranges near the middle 2/3s of the range. It is rated at 1.5 hp and for continuous running. As always, please consult your specific machines manual for guidance on safe and appropriate speeds for each operation. The answer to this question depends on a few factors. The answer is yes! Spindle components: p/n 314571 treadmill motor 2.8 hp 130vdc intermittent 2.6 hp 110vdc constant duty 1940 watts 18 amps. Answer A treadmill motor and controller is nearly free. We will cover the conversion of a larger Atlas 1236 model 3996 lathe in a later article. Read This to Find Out Whether Natural Gas Generators Are Loud. This modification requires the following steps: 1. At very low speeds, the system stalled fairly easily. by LX Kid Tue Apr 28, 2015 8:47 am, Post 2 run to the shunt-field current , 2 run to the armature. 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. 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. Here's a link, I'm not sure what the advantage is. 2. 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. That is a low end lathe but your conversion has not hurt it. The maximum current on the motor rating plate will give you full power. Option 1; Replace 1.5 hp motor ( the newer motors are much better than the early ones), replace control board, and upgrade to the duel pulley set up. Three terminal connections of which a 10,000 OHM rotary potentiometer is connected to. I suspect it would be ok to remove fan blade entirely but monitor motor closely. on Step 8. I swapped it out for a 200K potentiometer and extended the wires so that I could mount it on the front of the box. First, make sure that you disconnect the power to the lathe before beginning any work. You are using an out of date browser. 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. That meant I only had to mount the timing pulley. Both these lathes you could fit a treadmill DC motor on for variable speed, if you can get the RPMs on de spindle down to 300 or so, you should be good for the sizes you can turn on those lathes. 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. You do center drill all of your holes, dont you? Running straight out of the box. 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. Correction on that shaft, it is tapered, 0.632" on the end to 0.668" on the inside and 1.450" long. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. Provides speed, on/off, and direction control. Hi. Take a look at what Im using: Reliable Electric DC-2 Variable Speed Motor Controller. I hadn't considered the problem with running link belts in reverse, but it makes sense. For 500 watt Brushless DC drive, 120V 60Hz. password. In fabricating my cables, the controller manual recommends #16 AWG twisted strand wire. Anchor Designs 2.84K subscribers Subscribe 27 Share 2.6K views 2 years ago GREAT BRITAIN Final assembly of the. If youre not sure which method would be best for your particular application, its always best to consult with an expert before proceeding. Most of the industrial electronics that I have seen is rated at 40C. You can find a treadmill motor kit at your local hardware store. 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. This drive consists of two split pulleys. 3 years ago. Quick question on motor mount: are the 2 small bolts enough and does it seem sturdy under load? The picture shows how to do the wiring. It's also very fast at 4900rpm your old motor was 1440, other that it should work OK. Black is not a colour ! Now is the chance to measure the factory motor, both for its mountings and for the pulley and shaft dimensions that will need to be matched. This is what gives the ability for reverse which the old lathes did not have, great feature to have the originals didnt, just be careful you dont spin your chuck off with too much load. The same bracket will be set up to eventually accomodate a DRO. The second one was the finished product.that you saw in the movie. When I got them home I started taking them apart. Fabricate a mounting bracket to attach the motor to the lathe. I don't know why you can't see the pics but do appreciate your comments. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. 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. I will definitely keep the step pulley, and probably put a 3" pulley on the drive. Also note the speed range on the motor youre looking at. Option 2. Here is the assembly as removed from the treadmill, Leeson 1.62hp motor, plenty of power. Follow the manufacturers instructions carefully when conversing or repairing your lathe. One motor was rated at 2.0 horsepower, and the other at 1.8 horsepower.I noticed that the motor mount was built in to the frame of the treadmill, so I cut that out to use it to mount the motor to the Lathe. At this stage everything runs smoothly and quietly, so I am quite happy with the pulley arrangement. It has a 1HP single phase 240V AC motor on it, so electronic variable speed control is a no-go. 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. $279.95. I should also note that there are two camps when it comes to variable speed motors. What do you think about it? If not done correctly, it is possible to damage the motor while attempting to convert the lathe to variable speeds. 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. $289.00 . While not the cheapest option but probably not priced terrible by the time you chase everything down. Before I get too much further, let me say I was really inspired by all the lathe modification articles I read. 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. Share it with us! I was connected. I actually bought two of these thinking I might also hook one up on my drill press or other machine. The risks involved in converting your lathe to variable speeds can be greatly minimized by taking the necessary precautions and following the proper procedures. Speed Dial: A continuously variable potentiometer. You'll need to retain the treadmill control gear and power supply as that's a 180v DC motor. DC Permanent Magnet with PWM controller (Great for torque at all speeds).2 wires to the motor (Usually). Reverse: A switch to reverse the contacts so the motor runs in reverse. A quick update on my DC motor project. Also, use proper personal protective equipment (PPE), including gloves, goggles, and a dust mask, when working with power tools. Dec 18, 2016. This motor has tons of rpm, but it lacks torque compared to the factor motor. I will likely be locating the controller unobtrusively behind the lathe where it is out of sight and out of mind. Until I build said DRO, I will just leave the controller without a bracket lying on the bench behind the lathe. 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). Once you have signal, epoxy the magnet in place and let it cure. Santa Fe Springs, CA 90670. Yes, line voltage refers to the AC supply voltage. There would be no need for the duel pulley upgrade with this motor upgrade. 1 year ago. Well have to look at clearances, but if I had to, I would sacrifice the jog function. It doesn't mean it won't work above that temperature, but it does mean that you are shortening the useful life of the equipment. ), Reply I will do this before installing the motor on the lathe and bench run to be sure the motor and controller work correctly. I am building a new stand since the one it is on is not original and is not substantial enough for the heavy machine. Consider a 3 phase motor an a variable frequency drive. I also fiddled with the minimum and maximum speeds. I love this idea! Okay, who has been running my lathe backwards! Would you have an opinion on that one that could share? DC conversion on lathe. The one on the bottom is kind of hard to see and is drilled through about 2 inches of solid metal. Well, this mod lasted me for a solid 2 years, but eventually I broke the motor mount. India. Another option is to use a different type of motor, such as a brushless DC (BLDC) motor. This conversion is absolutely awesome and highly recommended and should have been done by us a long time ago. 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. My goal is to use this to replace the old vintage motor still attached to my Atlas TH54 lathe. The control board has a seven connections you will need to make, three terminal connections that a 10,000 OHM rotary potentiometer is connected to. So I scored a free treadmill recently. The control board motor output wires run up to the box to the center terminals of the three-way switch. its easier to do as bill says. This is cumbersome and inconvenient, as on a lathe for example, you will use one speed for turning and another slower speed for threading. CNC Spindle Control Upgrade Kit, Mini Lathe and Mini Mill. Tip I have just taken apart a treadmill, extracted the motor, circuit board and digital controls,isolated the parts of the circuit that are needed and stripped away those that are not necessary. Doing this will provide the maximum power as you actually use the lathe. 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. You are using an out of date browser. by wsippola Wed Apr 29, 2015 6:34 pm, Post This way I can use the lathe to machine the pulley to fit the motor. Also note the speed range on the motor youre looking at. This was slightly touchy. Depending on some details, actually free. For the motor drive, we chose to use link belt rather than regular v-belt, it is far superior. 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. Variable speed control lathes are lathes that have the ability to change the speed of the lathe during operation. Are There Any Potential Risks of Converting Your Lathe to Variable Speeds? Its actually pretty easy to do. Sep 21, 2019 at 8:52pm. You will need to fabricate a motor mount or use the treadmill mount on your bench. There have been some really bad motor controllers that couldn't handle that situation (hopefully all in the past). by Torch Wed Apr 29, 2015 6:24 pm, Post Thanks Torch! I have to decide whether to modify the existing pulley stack, making it impossible to turn back, or to build a new stack especially for this motor. The third factor is the value of having a variable speed lathe. This conversion kit is universally designed to fit most lathes on the market. VFDs are used on most modern small lathes. There are two types; electronic only (no moving parts) and rotary converters (1P motor drives 3P generator) which are used for higher horsepower industrial type lathes. Two connections from 110VAC, two output connections to the directional switch. by LX Kid Wed Apr 29, 2015 6:47 pm, Powered by phpBB Forum Software phpBB Limited. 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. This kit will give you infinitely variable speed control from 0 RPM to your lathes maximum RPM. 31358 NEW 2 HP LEESON MOTOR $49.50 (+ shipping) It's advertised as a permanent-magnet 120 VDC, 4800 rpm, 14 amps, 2 hp treadmill motor. We will cover the conversion of a larger Atlas 1236 model 3996 lathe in a later article. I then took the thinner material and made a couple of side plates that are held on by the corner holes in the big plate at top and bottom. Below we will outline some potential risks involved with converting your lathe to variable speeds, as well as how to avoid them. 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. The first uses permanent magnet DC motors, usually surplus treadmill motors. I was looking at KBMM-125 controller. Mar 17, 2023. Read This to Find Out Whether You Can Run a Portable Generator in a Shed. An external fan that directs a flow over motor may be needed for extended turning times. Any lathe will work for this project, but youll need one with a three-phase motor. I did a search on (variable, controller, controler) motor and bid on this one. ix. 1 year ago. I have been looking at options, and there are a few routes to go with this. Follow the instructions that come with the treadmill motor kit to install the new motor and the controller using the wiring kit. Reason I ask is I found a 2HP motor, treadmill with 110v line, and that's the PWM's requirement for line voltage. Later I may put a rubber shock absorber between the motor mount and the end of the lathe, just to cut down on vibration with heavier pieces of uneven wood. Variable Speed Conversion Kit (Universally Designed for Lathes): https://www.youtube.com/watch?v=FSMGOP01ulw, https://www.youtube.com/watch?v=ZFVuJ0hwNnw&t=194s. Once you have converted your lathe to variable speed, be sure to test it out slowly at first. $125.62. Look around for an old treadmill. 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. Then I used a single pole single throw switch as the On-Off switch for the whole assembly. Voltage is obviously okay. 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. Be sure to read their web articles too and youll learn a lot. by LX Kid Tue Apr 28, 2015 9:29 pm, Post ha) Used a little dc power adapter to supply ~6 vdc to the pot, in place of the red wire. Can You Run a Portable Generator in a Shed? Relaunch of Hobby Machinist Mentoring Program. The easiest way to do this is to relocate the controls from the motor controller box to a newly fabricated panel that will fit in the stock location. There is a big black terminal black near the center of the circuit board, and a series of three smaller brown blocks along the bottom: Wiring for Start/Stop/Jog uses these three: Once the various power in/out and control connections are made, there are a number of jumpers to consider in order to configure the controller properly to our application. by Torch Wed Apr 29, 2015 9:53 am, Post If chatter sets in, change speeds and it goes away. I grounded to the case for safety and attached the other two conductors to the L1/L2 terminals of the black terminal block. A site dedicated to enthusiasts of all skill levels and disciplines of the metalworking hobby. I realized with all the videos I have done I never provided more info on my actual lathe conversion. I have done the same thing on my 12 X 36 and am very happy with the results. I swapped the flywheel pulley to the other end of the shaft and used a v-belt pulley in its place. Next, remove the belt from the lathe. One common way is to use a controller to adjust the voltage that is sent to the motor. 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. 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. Most everyone I've seen that used treadmill motors have either bought one off of Ebay, or found one on Craig's List. This will be used to connect the VFD to the lathes motor. 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! Another potential risk is that of electric shock. 1) Find a used 3Ph motor and run it on a VFD. The tachometer kit comes with the tach, sensor and magnets. Once the belt is removed, you can begin working on the conversion. The only other tool youll need is a drill and tap set. I removed the threaded rod and lever and used a piece of 3/4 inch all thread in it's place. Mobile Workshop Sink With Easy DIY Parts Washer. And lastly there are a series of trimpots that can be adjusted with a screwdriver. Question Eventually, the vibration started to get worse and worse until the lathe was unusable. 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. Not sure that my equipment can handle it. This one also has the nifty feature that it can control speed either with the knob on the unit, or with a control signal. Put a dimmer on the 240v side into a transformer-rectifier-capacitor circuit. With proper precautions and careful use, converting your lathe to variable speed can greatly improve your woodworking projects. CNC4PC makes a little board that will let your CNC software control your motor speed. Not sure Ill ever take advantage of it. How cool is that? (This motor was supposedly rated at 3/4 horsepower, but those in the know say it's really more like 1/3 horsepower).I remembered that I've seen videos of how other people have used Treadmill Motors on other power equipment, so why not try to put one on the lathe? Lets review the internal connections on the DC-2. Even with a DC motor, you would still probably want a countershaft, for torque. Re: Using Treadmill motor on Metal Lathe. Particularly the very best of something you will use often, like a screwdriver. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. Cost approx. I was working on turning an Oak bowl when the motor shorted out. Kit Includes: Motor Wiring Control Box Motor Pulley Instruction Manual If it is not working properly, check the connections and make sure that the new motor is compatible with your lathe. The switch spec sheet is attached for reference. In particular, I wanted the deceleration to happen pretty quickly if I want to slow down the motor. Fast & Free shipping on many . Im going to need to make a better motor mount so this doesnt happen again. 4 years ago Do some research on that front before deciding. All times are GMT-5. Can you put a speed control on a PSC motor? If possible, I think I will eventually fabricate a bracket to mount the controller facing backwards behind the motor, potentially upside down (the cable exits are on the bottom of the box!). Some of the add-ons on this site are powered by. Motor speed control - $56 off ebay in 2013. 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. by Torch Wed Apr 29, 2015 2:58 pm, Post The only other tool you'll need is a drill and tap set. The serpentine V spacing on it is 0.092" while the V spacing on a typical US serpentine belt is 0.145". So I scored a free treadmill recently. Step 1: Types of Treadmill Motors I have seen 3 types of motors. Check the specs to be sure theyre compatible with your motor. Posts: 744. Actually, it's three bolts. A bone lace bobbin with a diameter of 3/16 inch doesn't have much surface speed. Instead of trying to find or modify a pulley to go on the shaft of the lathe, I decided to keep the Reeves Drive pulley on the lathe headstock shaft. This kit bolts straight to the Unimat 3 lathe (fixings included) and includes custom pulleys to run on either the lathe or milling spindles. Why? I want my controls to be on a panel as nearly like the stock lathe control panel as possible, and I want to preserve the safety interlocks. Gradually increase the speed to get a feel for how it responds. Compatible with SIEG SX2 and HiTorque mini mills. I have cleaned,repainted, and checked it mechanically. Torch Posts: 1669 Joined: Wed Mar 17, 2010 12:58 pm . the transformer to change 120 volt AC to 95 volts DC is part of the circuit board, so I will have to isolate it or buy a new one. I dialed it up to 30 or 40 rpm at the minimum. Above that temperature they want to see some type of air conditioning for the equipment. 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. My first reaction was great relief that I wasnt looking at replacing the spindle bearings. Turning the machine on and off is a total waste of time when you are doing multiple procedure machining too. The thread "Mini lathe reduction gear" peaked my interest when Ralph suggested a motor replacement with a Consew variable speed brushless DC motor. 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