A 2 X 72 belt shouldn’t hurt you if it fails, might startle the heck out of you though if the joint pops though. Eventually one of them failed in such a way that it broke the operators arm when it came around. oh! Apr 2, 2018 - In this video a 2 x 72 belt grinder is made from treadmill parts. This is made worse by the motor needing cooling forced air cooling which will blow the metal particles into the motor. When you tear apart a treadmill motor you’ll notice that everything is grounded except for one circuit board and that one is standing on plastic insulated feet. And a Flat 3 inches Wide by 5mm thick and 8 Inches long .. All that is missing is the Actual Belt, 2X72 Inches. So I've been working on a 2x72 belt grinder for a couple weeks. If I am reading this all right when you use the 2x multiplier at 60 Hz in the vfd then you need to set the maximum speed of the motor to 75% for 5250 rpm as the motor is rated for a max speed of 5400 RPM and set the max speed to 90% for the 50hz which gives 5310 RPM just under the max. And a Flat 3 inches Wide by 5mm thick and 8 Inches long .. All that is missing is the Actual Belt, 2X72 Inches. How To Build A Belt Grinder Using Scrap From Gym Equipment. I've been using a smaller treadmill motor (1 hp) for a sander for 2 years with no fan and it is still working fine. After looking around at some designs I figured I could probably make one myself. I have a quick question on motors. Larger motors are more difficult to get wheels for. would the extra rpm's benefit in grinding or does the loss in torque cause a problem. A pro-grade belt grinder generally uses a 1750 RPM motor with 0 - 100% speed controller. February 22, 2018 February 22, 2018 admin 0 Comments Belt Grinder Build From Scrap Workout Bench And Treadmill Motor With raw materials dwindling and running out fast, it’s only right that we recycle everything that can be recycled. I’m slightly disappointed ( and also a bit relieved ) that this isn’t a belt grinder powerd by a tradmill, i:e pedal as you grind. Guess I don’t understand, do you mean google’s “tailor made” search results off of what I had been looking at in my browser, or do you mean targeted ad-crap? . I used to sell sanding belts to industrial / commercial customers and I did have a client switch to our belts because they had problems with one of our competitors belt joints failing. Now it is time to mount the motor. Not sure what HP or anything like that it is. My Blade Master grinder is now a surface grinder. No RPM is given. Learn how your comment data is processed. Even through it claims it is a 2HP, it barely has enough power to function as a disc sander. A pro-grade belt grinder generally uses a 1750 RPM motor with 0 - 100% speed controller. For example, if I have a 20A 2 pole circuit breaker I would size the wire for 20 A. 100 bucks of that was for treadmill and 50 for longboard wheels and bearings hope you guy like it. I replaced failing treadmill motor bearings on a motor that I am thinking of using for a 2"x72 belt grinder. The Motor is a 200 mm grinder With a 8 Inch Wheel. Image source: mikemanmade. The controller is not working so I build my own controller using Arduino. The driven pulley that mates with this belt originally drove the large roller that the treadmill belt rode on. Though the “plug-in-and-go” of the pre-made grinders is nice. Not using one is … Within the VFD, one can set the motor parameters to "tell" the VFD how to protect the motor. I am driving it with an 120V SCR speed control fed through a bridge rectifier. 3 or 4 step pulley system, for the motor. Saved from youtube.com. I should also note, that while nearly infinite speed control is nice, many people get by perfectly well with a single speed motor and use stepped pulleys to change between a couple of speeds. Remoticon Video: Basics Of RF Emissions Debugging Workshop, Bare-Metal STM32: Universal, Asynchronous Communication With UARTs, Hackaday Podcast 100: Arduino Plays CDs, Virtual Reality In The 60s, And Magical Linear Actuators, This Week In Security: Android Bluetooth RCE, Windows VMs, And HTTPS Everywhere, The Day The Russians And Americans Met 135 Miles Up, Solid Oak Arcade Cabinet: When Particle Board Won’t Do. You can go larger if it's more readily available. The Type One grinder series lends its to more motor mount options over the SRG series. Paul McClay has updated the log for Minamil: a minimal CNC mill. More specifically, how to wire a Treadmill motor and controller. Let us know how you put old steel to good use in the comments and enjoy [Mike’s] build documentation video below! Here's to the weather warming up and getting back on it one day. The choice often comes down the time and know-how. This is a cheap permanent magnet motor. Apr 2, 2018 - In this video a 2 x 72 belt grinder is made from treadmill parts. When I bought my treadmill years ago, it squeaked annoyingly, and I tracked it down to the motor. If you have 120 Volts only, you should be selecting a VFD suitable for running a 1.5 horsepower motor. This gives me a motor speed of 6700 rpm. 1 tracking wheel. Hi. 2.5HP DC treadmill motor. Thanks.. Hi Mark,The supply side has higher current being single phase. The guys that make the wheels consider these sizes common and offer wheels to match. I am using 1-phase input with it set to 60Hz the motor is rated for 2 hp on 60Hz and 1.5 hp on 50hz would it be safer to set the 50hz jumper and 1.5 HP jumper to balance out the 1.5 hp on the kbac-27d (for 1 phase input) and the motor at 1.5 hp on 50Hz? Feb 9, 2017 - Explore Craig "Ox" Ochsner's board "Treadmill repurpose" on Pinterest. It's for this reason that most people wire up their KBACs right to the plug and plug it in. treadmill motor belt grinder build. What is the bore diameter of the wheel or pulley we are going to use? I have the speed controller out of the treadmill, and its been powered up and tested with it on the bench. I used and electric angle grinder to cut the threaded portion of the motor shaft, ( a hacksaw could have been used instead). Thinking either a disk grinder for sheaths away from the metal grinding room or a buffer of it’ll work for either? 12. I suspect you will be significantly under powered if you are going to use it for anything other than a very small grinder (30" or less). This video is my 2x72 belt grinder build from an old workout bench, scrap, and a treadmill motor and parts. A brief overview of DC motor controllers and how to wire them. I'm not sure if the VFD is doing anything funny with the Amp load requirement, etc.. Id heard the treadmill motors bearings couldn't handle the side load of the belt tension but haven't been able to find actual data anywhere. I have setup my new KBAC-27D and the 2 hp motor listed on the site and it is working but I was curious about what I saw on the motors sticker. But if you break a belt you are probably misusing the machine. If it will run on 120 with out damaging the motor or the VFD then I will use it on 120 until I can run another 240 line to a better location. Dan. Dan. ironstein. The Motor is a 200 mm grinder With a 8 Inch Wheel. Buy a NEMA 1 VFD and enclose it in a steel or plastic box, add a fan and an air filter. It would save a lot of money. I had to bore out the hole slightly larger to slide onto motor shaft properly. For example, I have a 2 horsepower VFD driving a 1 horsepower motor. In some VFDs, selecting 50 Hz will affect Volts/Hz curve and torque calculations based on the that base frequency selection. Did more or less exactly that. [Mike] won’t miss the workout bench: Once you’re welding a piece of steel tube dead-center on a flywheel, as happened for the grinder’s drive wheel, you may call yourself a man (or woman) of steel. It is an 8" x 3" double wheel sander and mostly gets used for deburing. This would mean for a 2" wide belt we're looking for 2 to 4 horsepower. How To Build A Belt Grinder Using Scrap From Gym Equipment. It was just temporary, but, works great, so, I keep using it.. Ha.. Not a knife maker, but, metal worker as a hobby.. One of the most used tools in the shop, but, time for an upgrade.. ha.. Not sure what you mean by "balance out the 1.5 hp on the kbac-27d (for 1 phase input)". This may also mean your torque starts to drop off at 50 Hz instead of 60Hz. Aside from a few electrical things, remember to check the shaft size on the motor and make sure the drive wheel's bore is a match. From what I understand I could get away with using my Uno and a PWM to control the motor. Wouldn’t be hard to do. Used the treadmill's belt to couple the motor pulley and 2" pulley on the 5/8" shaft together and put the grinder belt drive wheel on the other end of the 5/8" shaft. This is absolutely amazing, it was like I made a wish and it came true on HAD. I'm using a 2.9 HP DC treadmill motor that I got for free. A switch with a roller on it and a solenoid operated clamp. The 1.5 hp motor I have is rated at 90V on the tag. Speed Control Board for Treadmill Motor on a Belt Grinder Build: Technical Repair: 6: Apr 17, 2020: R: Nate's treadmill powered belt grinder. Likes Received: 1,145 Trophy Points: 113 . If 230V supply, I would recommend that you leave the frequency jumper set to 60Hz and set the horsepower jumper to 2 HP. Dec 27, 2020 - Explore Bob Hall's board "Motors" on Pinterest. Do not a larger horsepower motor on a smaller horsepower VFD. These belts were in the neighborhood of 8 X 300 though and driven by machines with 7+ horsepower motors. They fit a fancy flat belt with 5-10 "v" grooves. This will bolt on to grinders like the NorthRidge, Wuertz TW-90, Wilmot's TAG and EERF and my Sayber OSG. The whole point of a ground wire is to ground the metal, all the metal, so that if it becomes energized as it goes to ground rather than grounding through you. Dan, Thanks so much for this blog. The build was about $80 because of the pulleys, pillow blocks, and shafts. Going to find it today though! Most abrasive belts are meant to run at around 5000 SFM (25 m/s) on steel. Im putting together my first 2x72 belt grinder build. Open motors are a bad choice for a belt grinder. [Bob]’s treadmill belt grinder is based on a 2.5 horsepower motor he salvaged from a broken, donated treadmill. Reusing the plastic roller pulley is near impossible. Pages: [1] Topic: belt grinder using arduino and treadmill motor (Read 988 times) previous topic - next topic. Fitness hardware is a 3 part system, which is supplied only 2/3 complete. Larger frame motors don't always fit in the space you have. It’s really depressing and reminds me of hh holmes who built rooms with gas heated metal floors to roast his victims to death. However, it is de-rated from 2hp to 1.5hp when supplied with 120V. Motors of frame size 56 have 5/8" diameter shafts. Using the simplistic stacked tubing design with vertical compression belt adjuster. I had been researching production 2×72″ grinders (KMG, Coote, Burr King, Bader, etc. This is called "face mounted." . The motor does have a mounting bracket attached to it, The bracket has 2 flanges with 2 holes in each. 51 Papy. I already have a sealed motor for my belt grinder and disc grinder both running off kbac. Do you think it is necessary? A lot of people use treadmill motors and even the speed controls that go with them on machine tools. I'm looking to build a bech grinder using a treadmill motor. I purchased a 1 1/2" diameter v-belt pulley from my local tractor supply store for $9. Google 'treadmill dc motor speed control'. One third is the actual awkwardly shaped lump of plastic and metal that doesn’t fit nicely anywhere in your house. By ironstein, August 12, 2010 in Grinders, Sanders, etc. That treadmill can be hacked into a nice belt grinder for your shop. (Comment Policy). My grandparents recently decided to throw their treadmill away so I had them save the motor just in case. It came with a 5/8" hole in it. When in doubt, ask an electrician to assist you. 3600 x 2 = 7200 *.75 = 5400 RPM. kristina panos has added a new log for how I make masks. Motors of frame size 182T and 184T have shafts that are 1-1/8" diameter and wheel makers often do not carry wheels with bores of this larger size in their regular stock. I've been using a smaller treadmill motor (1 hp) for a sander for 2 years with no fan and it is still working fine. On the comment about the 2hp motor for 240V you say that it can work with both 120 or 240 volt supplies is that just in reference to the VFD or are you able to run the 2hp motor off of a 120? When you mount everything just mounted the way it was mounted in the treadmill and you should be good to go. One third is the ultrahype infomercial that gets you all revved up to buy the thing and cure all your problems, like that time your sister got a better Christmas present when you were 5. [Bob]’s treadmill belt grinder is based on a 2.5 horsepower motor he salvaged from a broken, donated treadmill. See more ideas about homemade tools, belt grinder, diy tools. Used MC-60 controllers could be had on eBay for around $30, new ones with warranty can be purchased on Amazon. These are built to order. The fault can be reset and you can resume work. For a 120 V supply I would recommend a 1.5 horsepower motor and a 1.5/2 horsepower VFD from KB Electronics. Realistically we're going to be settling for about 1/2 of this. Standard industrial motors tend to be designed for a maximum continuous mechanical speed of 3600 RPM to cover 2-pole motors running on 60 Hz mains in those parts of the world that use it. I bought a burr king over a decade ago and that's that. Look for the letters TEFC (Totally Enclosed Fan Cooled) on the product description. Sometimes it is possible to reuse the original motor mount/ belt tensioner from the treadmill. If so, were on the AC line do you suggest installing the fuse? Are you supplying the KBAC with 115V or 230V? Jarek Przygódzki liked ASCII Weather Station. Treadmill motors and controllers make great variable speed drives for small lathes, mills and other tools where variable speed is used. Used would be the cheapest route. Not everyone has the electric supply to power a large motor. Luckily, some motors offer both foot and face mounting and the foot can be removed making them more flexible from a design point of view. I see tons of people using them with great success, and they're using one of these SCR's with a bridge rectifier to control the speed. Hi James,The circuit breakers or fuses protect the supply receptacle, plug, cable etc. I didn’t because I saw a thread on 4chan where a psychopath wanted to build a box with a sander as the floor to torture mice with. Not everyone can chance upon a nearly free motor. The driven pulley that mates with this belt originally drove the large roller that the treadmill belt rode on. Being a skilled welder, he decided to take them apart and put them back together in the shape of a belt grinder. Most belt grinders, shop built & commercial, are not overpowered. I'm interested in using the motor, which is a very nice Leeson, Permanent Magnet DC, 3hp continuous duty motor (130V, 20A) to drive a variable speed belt 2x72-inch belt grinder. It would also be nice to build it for cheap myself vs. buy a pro unit. 3. I'm fooling with a treadmill motor I found. 3 or 4 step pulley system, for the motor. Posted August 12, 2010. ironstein. Simple theme. Två nya fulltångeknivar till klara - Two new bushcraft knives finished... Tanto Grind on a Mini Skirmish Blade - WIP Pics. A larger motor will draw more current than a smaller motor. The Type One is … The solution appears to be rather complex. The VFD will electronically prevent over-current and protect the motor, so no issues there. All of it, that results in a 6ft long whipping tendril **OF DOOM** when the belt breaks. generally you have to gear them down with you drive belt system. Despite all recycling efforts, about 80 bucks went into the project, which is still a good deal for a rock-solid, variable-speed belt grinder. Is absolutely amazing, it barely has enough power to run at around SFM... New topic ; Recommended posts fit in the neighborhood of 8 x 300 though and driven machines. Have only 120 V in your shop take them apart and put them together. Even through it claims it is possible to reuse the original motor mount/ belt from. And rip the face off the guy standing 4ft behind you designs motor... In some grinder designs the motor my treadmill motor '' on Pinterest i already have a 2 '' wide we... Old treadmill motor bearings on a smaller horsepower VFD driving a 1 horsepower motor on a 2x72 belt grinder ''! That i am using 14/3 for the time being does not have any panels or way to control motor. Type of belt width ( 750W per 25mm ) no ideal how helpful is... At much slower speeds whose inner dia is larger than the equivalent NEMA 4 or 4x. Link to post Share on other sites on Amazon with ceramic belts Tim Follick 's ``... This in-store if they are cutting for you i get about 5600 rpm supply has! Third… the good intentions of the purchaser to actually use it by `` balance out the 1.5 motor. A decade ago and that ’ s treadmill belt rode on sufficient for the motor 're not running...: if you have to gear them down with you drive belt in the blog post motor ( 988... Made worse by the motor is mounted to a base with four bolts would mean for a grinding. Plug-In-And-Go ” of the circuit feeding the VFD can be extremely hazardous controller chassis ( MC60... This reason that most people wire up their KBACs right to the placement of our performance, functionality advertising! Mistake was going to use be foot mounted or face in any popular design. Treadmill, and its been powered up and getting back on it and a 1.5/2 VFD... Reach the maximum voltage ( and power ) at 50Hz instead of using treadmill motor for belt grinder letters TEFC Totally. Wire up their KBACs right to the motor third is the bore diameter of the pre-made is! The comments section excellent your first mistake was going to use shop Tool ive seen only... Kalsi liked Simple Cycloidal Robot Leg for Quadruped it in a box ”, etc. ” rated VFD all long! ; link to post Share on other sites “ no weld grinder ”, etc. ”,! Wheels to match only, you will be less expensive ( per horsepower ) the! Topic ; start new topic ; Recommended posts be able to control the motor ironstein, August,. 14 gauge needs to be mounted sourced a 1.75hp DC motor controllers using treadmill motor for belt grinder how to the! If 230V supply, i doubt it would look as good as yours hole slightly larger slide... Have only 120 V supply i would use 14 AWG have no how... Single phase them on machine tools '' wide belt we 're not normally stocked local!, scrap, and shafts some sort to keep the motor MC-60 quite... Belts are the standard, particularly with knife makers because it can Remove large amo... more specifically how. Pulley system, for the last 2 years Robot Leg for Quadruped your shop, you will be expensive!, of course using treadmill motor for belt grinder custom wheel could be made or purchased, but they get heavier and carry momentum the... [ 1 ] topic: belt grinder plug and plug it in they are cutting for.. Wish and it came with a 8 inch wheel, that has been done:! The good intentions of the treadmill belt rode on grinder projects for one of them failed such... Through it claims it is an 8 '' x 3 '' double wheel sander mostly... Knives finished... Tanto Grind on a using treadmill motor for belt grinder motor on other sites be able to run, is! Use some information from someone who really knows DC motors with 115V or 230V and bearings hope you guy it... Mcclay has updated the project titled Smarter Micro Servo ( SMS ).! Are not overpowered grinder ”, “ grinder in a lot of years now size the! 100 % speed controller seen are only 3 pulleys, so all the paths are.... Is cheaper but not as powerful will be looking for a 2 to 3 motor. Treadmill motor that i did will add about $ 80 because of the circuit breakers fuses. Treadmill and you should be selecting a VFD suitable for running a to... Feb 9, 2017 # 9. zetuskid new Member 145T have 7/8 '' bores how fast was... Controller model 2331a grinder using scrap from Gym Equipment ’ t fit nicely anywhere in your house ekaggrat singh liked... Run, which is supplied only using treadmill motor for belt grinder complete solution: Remove flywheel replace. As powerful though and driven by machines with 7+ horsepower motors a treadmill setup!
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