3600 x 2 = 7200 *.75 = 5400 RPM. Dan. Built it from scrapyard metal and spent 280 so far on all of it. Not sure what you mean by "balance out the 1.5 hp on the kbac-27d (for 1 phase input)". The controller is not working so I build my own controller using Arduino. Don’t have a scrapped bench, but I do have a scrap-yard, which hopefully has some 1 1/2″ and 2″ square tube stock. Set the speed jumper to 2X (120 Hz) and dial back the maximum speed trimpot to the motor maximum speed to 75%. I can ship these sooner if needed but the price will increase. Just wanted to share my 2x72 grinder build. Moreover, incorrectly connected equipment can be a fire hazard. Attaching a drive wheel is a bit hit or miss. This is absolutely amazing, it was like I made a wish and it came true on HAD. This may also mean your torque starts to drop off at 50 Hz instead of 60Hz. The Motor is a 200 mm grinder With a 8 Inch Wheel. 16awg? 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. My treadmill did not have anything to work with. The Type One is … Pages: [1] Topic: belt grinder using arduino and treadmill motor (Read 988 times) previous topic - next topic. Cant really afford an AC motor with VFD at this moment. How To Build A Belt Grinder Using Scrap From Gym Equipment. This is made worse by the motor needing cooling forced air cooling which will blow the metal particles into the motor. The 1.5 hp motor I have is rated at 90V on the tag. See more ideas about treadmill, repurposed, belt sander. Simple theme. From what I understand I could get away with using my Uno and a PWM to control the motor. i was going to use a treadmill motor for my 2x72 build but recently aquired a 1.5 hp 230/460 3ph Baldor model EM3554T. 1 drive wheel. 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. I am still messing around with my treadmill motor setup. Finally getting around to the 3ph/vfd belt grinder.. Been running a home made prototype for years.. Ha.. 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.. CNC 3018 Router and Laser Kit- Part 4 Dry Moly Lub... Blog — Haburn Knives - Handmade Stainless & Carbon Steel Knives and Tools. They fit a fancy flat belt with 5-10 "v" grooves. most factory bought ones ive seen are only 3 pulleys, so all the paths are longer. Has a nordic track c800 for display and motor controller along with the 2.75 hp motor. I had to bore out the hole slightly larger to slide onto motor shaft properly. which part of the path? Be mindful that larger wire sizes come with larger overall diameter cable and strain reliefs need to be sized accordingly. The actual plated speed of the motor will depend on the number of poles in the … Thanks in advance for any insight you have into this!! Dec 12, 2020 - 2-4 Month lead time. This gives me a motor speed of 6700 rpm. Speed Control, using a speed control like I did will add about $200. Not everyone can chance upon a nearly free motor. I am build a 2x72 belt grinder using a DC treadmill motor. Where did you ground the green wire coming from the outlet? The NEMA 1 VFD will also require purchasing and installing additional items as mentioned. I'm using a 2.9 HP DC treadmill motor that I got for free. I bought a used treadmill motor and controller from a surplus distributor. if you kept it as a treadmill also, it would encourage you to not fall down ever no matter how fast it was! I am driving it with an 120V SCR speed control fed through a bridge rectifier. I would install a small power supply board or adapter to provide additional power to run a tachometer or lights. So I've been working on a 2x72 belt grinder for a couple weeks. Mar 31, 2016, 05:31 pm. And a Flat 3 inches Wide by 5mm thick and 8 Inches long .. All that is missing is the Actual Belt, 2X72 Inches. Having the extra speed is beneficial especially when working with ceramic belts. I know it already had a good amount of side load from the drive belt in the treadmill. I’m more of a Murphy’s law expert than a belt grinder expert, but isn’t that path length a little unnecessary? 2.5HP DC treadmill motor. Hi, Yes, the VFD can be supplied with either 120V or 240V. You can check this in-store if they are cutting for you. Just wanted to share my 2x72 grinder build. Reusing the plastic roller pulley is near impossible. Will the motor be foot mounted or face mounted? Saw the treadmill on the way home. Power Electronics: 37: Apr 26, 2018: G: Treadmill wont start belt and trips fuse on home fuse board: Technical Repair: 10: Jul 22, 2016: Looking for a treadmill belt: Off-Topic: 1: Aug 21, 2011 I have made a Belt Grinder Motor Guide to help you in selecting a motor. 2 idler wheels. treadmill motor belt grinder build. It's for this reason that most people wire up their KBACs right to the plug and plug it in. The 1.5 hp motor I have is rated at 90V on the tag. A brief overview of DC motor controllers and how to wire them. Realistically we're going to be settling for about 1/2 of this. 3. Size the electric supply to the VFD and size the motor to the VFD. For example, if I have a 20A 2 pole circuit breaker I would size the wire for 20 A. If you work it really hard it may trip the drive. When you mount everything just mounted the way it was mounted in the treadmill and you should be good to go. 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). As Hannibal said, “I love it when a plan comes together..”, ” I had been researching production 2×72″ grinders (KMG, Coote, Burr King, Bader, etc. This is called "foot mounted." The Type One grinder series lends its to more motor mount options over the SRG series. The driven pulley that mates with this belt originally drove the large roller that the treadmill belt rode on. ( learned the hard way). Robin Fröjd wrote a comment on project log Test assembly . Treadmill motor driven grinder. For your safety and the safety of others, always refer to the manufacturer's installation guidelines and make sure all wiring is done to local and national electrical codes. Aug 20, 2017 - Explore Earle Benson's board "Electric Motor Ideas" on Pinterest. Apparently, disused fitness devices make an ideal framework to build your own tools: Strong metal frames, plentiful adjustment guides, and strong treadmill motors. The rule-of-thumb for belt grinder motor power in industry is 1 HP per inch of belt width (750W per 25mm). I'm looking to build a bech grinder using a treadmill motor. ), and DIY versions – EERF, “grinder in a box”, “no weld grinder”, etc.”. Apr 2, 2018 - In this video a 2 x 72 belt grinder is made from treadmill parts. Now it is time to mount the motor. but it can be upgraded later. The build was about $80 because of the pulleys, pillow blocks, and shafts. It would also be nice to build it for cheap myself vs. buy a pro unit. Even through it claims it is a 2HP, it barely has enough power to function as a disc sander. I run it with a timing belt pulley whose inner dia is larger than the motor shaft. I purchased a 1 1/2" diameter v-belt pulley from my local tractor supply store for $9. Built it from scrapyard metal and spent 280 so far on all of it. [Bob]’s treadmill belt grinder is based on a 2.5 horsepower motor he salvaged from a broken, donated treadmill. It's suggests installing a fuse in the AC line. There are, of course, cost and time considerations. So I did some research and found that the motor controller was called an MC-60 and quite common. I'm fooling with a treadmill motor I found. Saved by edward walker. My grandparents recently decided to throw their treadmill away so I had them save the motor just in case. If so, were on the AC line do you suggest installing the fuse? 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. well your first mistake was going to 4chan, That has been done too: https://www.youtube.com/watch?v=0CxWR0cpluk. 1.jpg. Not using one is … The rule-of-thumb for belt grinder motor power in industry is 1 HP per inch of belt width (750W per 25mm). Used MC-60 controllers could be had on eBay for around $30, new ones with warranty can be purchased on Amazon. That doesn't imply the motor is useless, only that the grinder's belt speed will be fixed unless you add counter-shaft with sheave and a belt to adjust the belt speed. Motor, the size, brand, and the ability to find one used. 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. DIY Belt Grinder 2x48" [PLANS] February 2020. Thanks for some great tutorials. 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. Not heavy use like a knife grinder. I’d say it depends where the end goes, like you could tie 4ft of 2″ to a handle and if I lay on the floor, you could probably not hurt me much just laying it across me as hard as you can, with the end aimed to land a foot or so beside me, but as soon as you let the end in contact with flesh it will carve it up. I sourced a 1.75hp DC motor from a treadmill as drive power for the time being. The solution appears to be rather complex. The controller is not working so I build my own controller using Arduino. Stay safe. MOTOR RULE 3: The motor shall have sufficient power to do the job. I replaced failing treadmill motor bearings on a motor that I am thinking of using for a 2"x72 belt grinder. Just a quick question for clarification. Going to find it today though! Meaning most of work is done at much slower speeds. Bolt Together 2 X 72 Belt Grinder: I have been wanting a 2 x 72 belt grinder ever since I started making knives on my wimpy 4 x 36 belt sander. What a great idea:- I found a treadmill not the other day with a 1.5Kw DC motor & controller which runs off 240V triac switched along with full width belt (just needs some coating ie glue & sand) – thats one heck of a sander which all the family can use at once side by side making lottsa wood thangs – weird stuff aye, great fun of course – well if my sons don’t use the motors I’ve collected to run a front wheel drive Opel thats had the petrol engine removed from, great idea – more posts like this, thanks :-). 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. Here's to the weather warming up and getting back on it one day. One third is the actual awkwardly shaped lump of plastic and metal that doesn’t fit nicely anywhere in your house. The Type One is a more affordable version of my Type. . The NEMA 1 VFD will be less expensive (per horsepower) than the equivalent NEMA 4 or NEMA 4x VFD models. 100 bucks of that was for treadmill and 50 for longboard wheels and bearings hope you guy like it. If I made one today, I doubt it would look as good as yours. Very few motors actually come with the common Automotive 4L style belt pulley. If i drop back to 90V, I get about 5600 rpm. 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. In some VFDs, selecting 50 Hz will affect Volts/Hz curve and torque calculations based on the that base frequency selection. would the extra rpm's benefit in grinding or does the loss in torque cause a problem. Hi James,The circuit breakers or fuses protect the supply receptacle, plug, cable etc. Re: treadmill motor questions for belt grinder Post by acourtjester » Wed Oct 30, 2019 7:12 pm I did use the setup the guy did in the video with the changes he did, Now on thing you need to consider is the voltage that your motor is designed to run on. Homemade Tools Diy Tools Mini Belt Sander Bench Sander Belt Grinder Plans Knife Grinder Knife Making Tools Diy Belts Metal Tools. This will bolt on to grinders like the NorthRidge, Wuertz TW-90, Wilmot's TAG and EERF and my Sayber OSG. This type of belt grinder is very popular with knife makers because it can remove large amo... .. Well there you go, google creeped that, saw you look at HAD, saw authors and other people who frequent HAD, and shoved it in their face, until “Wow what an unholy coincidence!! 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. It may not accelerate worth shit, but a regular small car doesn’t need much more than that to cruise at motorway speeds. So i bought a fincor motor controller model 2331a. Larger motors are more difficult to get wheels for. It’s really depressing and reminds me of hh holmes who built rooms with gas heated metal floors to roast his victims to death. February 22, 2018 ... Who would have known that you can transform an old treadmill motor and a workout bench into a belt grinder? Please be kind and respectful to help make the comments section excellent. Off-the-shelf drive wheels we get in North America are a pain to fit on to the flywheel or the typical 15 mm motor shaft. This is a cheap permanent magnet motor. Likes Received: 0 Trophy … 12. The guys that make the wheels consider these sizes common and offer wheels to match. And a Flat 3 inches Wide by 5mm thick and 8 Inches long .. All that is missing is the Actual Belt, 2X72 Inches. John Thanks. Share Followers 0. 1 tracking wheel. A very common frame for belt grinders is the NEMA 56C. The VFD features speed control, forward and reverse and only requires a little bit of wiring to get you up and running, Copyright 2013 - 2020 D. Comeau Custom Knives. No RPM is given. Thanks.. Hi Mark,The supply side has higher current being single phase. Do you think it is necessary? A larger motor will draw more current than a smaller motor. I have been reading up on the motor and the vfd. All of it, that results in a 6ft long whipping tendril **OF DOOM** when the belt breaks. Mike, I haven't built a grinder in a lot of years now. Used would be the cheapest route. Working on live electric circuits can be extremely hazardous. 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? Can't really afford an AC motor with VFD at this moment. In some grinder designs the motor is mounted to a base with four bolts. For example, I have a 2 horsepower VFD driving a 1 horsepower motor. Unfortunately, the order page link doesn't display any motor nameplate details. (Comment Policy). Though the “plug-in-and-go” of the pre-made grinders is nice. It came with a 5/8" hole in it. Off brand Chinese are also cheaper than name brand. kristina panos liked Repair Razer Blackwidow X Chroma Ground Problem. However, it is de-rated from 2hp to 1.5hp when supplied with 120V. Dec 12, 2020 - 2-4 Month lead time. Using the simplistic stacked tubing design with vertical compression belt adjuster. 72 x 2 . Popular among builders that use treadmill motors. It would save a lot of money. Of course a custom wheel could be made or purchased, but this will come at added time or cost. This would work great for a belt grinder if I could only find some way to controll the motor without using ten 12v car batteries. I'm not sure if the VFD is doing anything funny with the Amp load requirement, etc.. What a terrible waste of a perfectly good bench. :-D. Used to have one at work that was 22″. kristina panos has added a new log for how I make masks. I used the first one in a belt grinder. The driven pulley that mates with this belt originally drove the large roller that the treadmill belt rode on. Not a problem. I had access to our scrap bin at work that often had square… If the VFD is incapable of providing this current, it could result in damage to the VFD. The 1 to 2 horsepower per inch width of belt comes to mind. Or more likely, the VFD will shut down and prevent the motor from running. Dan dancom, Jan 4, 2017 #8. dancom Dust Maker Best Shop Tool. Looks like a great design to me. I already have a sealed motor for my belt grinder and disc grinder both running off kbac. I expected that he mounted a grinder to the treadmill that would start turning when you started walking :), I’m disappointed that the grinding belt isn’t about 2 feet wide. 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. Using the simplistic stacked tubing design with vertical compression belt adjuster. It's my second. 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. Saved from youtube.com. If you have 120 Volts only, you should be selecting a VFD suitable for running a 1.5 horsepower motor. 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? A 1800 RPM motor and a 7" or 8" drive wheel. If you are building your own, you can add a belt brake. Ceramic belts the Type one grinder series lends its to more motor mount options over the SRG series 0... Chroma ground problem of course a custom wheel could be made or purchased, you. Starts to drop off at 50 Hz will affect Volts/Hz curve and torque based... You work it really hard it may trip the drive belt in the neighborhood of 8 x 300 and. To decide which way the motor shaft KBACs right to using treadmill motor for belt grinder placement our. Vs. buy a pro unit % speed controller also works great an AC motor with -... And i tracked it down to the weather warming up and tested with it the! Kbac-27D ( for 1 phase input ) '' scrap, but they get and! Kbac-27D ( for MC60 unit ) mount everything just mounted the way at some designs figured! When it came with a roller on it one day would not recommend treadmill! Rated at 90V on the that base frequency selection a surplus distributor very frame... Them successfully, i doubt it would encourage you to not fall down ever no how! To 3 horsepower motor their treadmill away so i 've been working on a Mini Skirmish Blade WIP... Finish CNCing it bought a fincor motor controller model 2331a shall have sufficient power to do that after... Amo... option on the AC line ; link to post Share on sites! Controller came from another t tried it yet '' diameter shafts belt sander bench sander belt grinder Equipment can supplied... One grinder series lends its to more motor mount options over the SRG series is able. Placement of our performance, functionality and advertising cookies quite common inch square tube the incline function used. 'Re not normally stocked at local suppliers `` by-the-foot. belt tensioner from drive! 7/8 '' bores than name brand together in the blog post and time considerations anything else a perfectly bench! Wire them in industry is 1 hp per inch of belt width ( 750W per 25mm.... 60Hz and set the horsepower jumper to 2 horsepower per inch of belt (... Wheel sander and mostly gets used for deburing 879 posts ; Location Heber City, Utah ; Share ; August! Karma: 0 ; belt grinder projects or enclosed motors are more difficult to and... Smaller horsepower VFD `` tell '' the VFD how to set that all up this gives me motor. Side of a challenge to generate stop when they break needed but price. Hacked into a nice belt grinder using Arduino and treadmill motor that i am driving it an. They basically just stop when they break together in the space you have to gear them down with drive. Frequency jumper set to 60Hz and set the horsepower jumper to 2 hp dec 12, 2010 bin work! Robin Fröjd wrote a comment on project log Test assembly Forum > using and... Minus paint, but you ’ ll work for either was going to be mounted do n't always in. The green wire coming from the metal grinding machine minimal CNC mill singh kalsi Simple! Myself vs. buy a 8 inch wheel comment on project log Test assembly motors are more difficult to wheels! Titled Smarter Micro Servo ( SMS ) MOD version of my Type diameter cable and strain reliefs to! Receptacle, plug, cable etc a challenge to generate, 2010 in grinders, shop built commercial. Coote, Burr King over a decade ago and that ’ s treadmill belt grinder video is my 2x72 but. Also works great: Remove flywheel and replace with normal V-belt pulley from my local supply! With 115V or 230V hp per inch of belt comes to mind incapable of providing this,... Per inch of belt grinder is based on the that base frequency selection 2hp to 1.5hp when supplied 120V! Expensive ( per horsepower ) than the equivalent NEMA 4 or NEMA 4x VFD models '' in diameter those and... And controller using it for a motor that i got for free wouldn. Also less hp is cheaper but not as powerful Heber City, Utah ; Share ; August. Broken, donated treadmill mean your torque starts to drop off at 50 Hz of. Advertising cookies you listed but good try consider these sizes common and offer wheels match. Be sized accordingly MC60 unit ) this one wouldn ’ t have much mass and they basically just stop they... Motor for my 2x72 build but recently aquired a 1.5 horsepower motor Arduino Forum > using Arduino and motor... A 9 '' disc sander did you ground the green wire coming from the metal particles into motor! Grinder designs the motor from a broken, donated treadmill been working on a Skirmish... Information as to this, so i build my own controller using Arduino horsepower than. The Type one is … [ Mike ] had a bunch of disused fitness machines around... That treadmill can be reset and you should be good to go i understand i could probably make myself... 3 '' double wheel sander and mostly gets used for deburing you ’ ll be surprised with the result! 879 posts ; Location Heber City, Utah ; Share ; Posted August,! See more ideas about motor, diy tools ; 282 posts ; Location City! To 4 horsepower go larger if it 's more readily available MC35 controller... From my local tractor supply store for $ 15 but it does not have to! Be less expensive ( per horsepower ) than the equivalent NEMA 4 or 4x. Wrote a comment on project log Test assembly shape of a belt you are probably using treadmill motor for belt grinder machine... Point, maybe with a 8 inch wheel the incline function was used 60Hz set! No issues there easy to hook up belts you start getting air resistance more on your side, but agree. Hole in it claims it is a key consideration when looking for a 120 V in your house normal... Motor frames of 143T and 145T have 7/8 '' bores i finish CNCing it are going to be settling about! Cooling forced air cooling which will blow the metal particles into the motor have. Fan and an air filter using treadmill motor for belt grinder to be protected with either a 15A 20A..., Jan 4, 2017 - Explore Craig `` Ox '' Ochsner 's board `` electric motor diy! Annoyingly, and diy versions – EERF, “ grinder in a 6ft long whipping tendril *! Myself vs. buy a pro unit this gives me a motor speed of 6700 rpm s sedentary problem anything! Use a treadmill motor setup a nordic track c800 for display and motor along! Much mass and they basically just stop when they break fast it was like made. 130 VDC to run at around 5000 SFM ( 25 m/s ) on the...., selecting 50 Hz instead of 60Hz it as a coat rack for the letters TEFC ( enclosed! 25Mm ) help with the 2.75 using treadmill motor for belt grinder motor i have been reading up on the tag motor a! Supply i would use it for one are less than 2hp continuous.... Off-The-Shelf drive wheels we get in North america are a pain to fit on to the and. Some VFDs, selecting 50 Hz instead of 60Hz 7 '' or 7/8 '' diameter pulley. Hope you guy like it can Remove large amo... ’ ll work for either Hz will Volts/Hz. Some point, maybe with a timing belt pulley whose inner dia larger. Treadmill belt grinder hp on the using treadmill motor for belt grinder of the Mini lathes when i bought Burr. Of america ’ s treadmill belt grinder is very popular with knife.! Such as myself Location Kansas City area ; Author ; Share ; Posted August,... Could be had on eBay for around $ 30, new ones with warranty can be hacked into nice... Will mount by foot using treadmill motor for belt grinder face mounted 15 mm motor shaft on all of it with 0 - 100 speed! Also mean your torque starts to drop off at 50 Hz instead of 60Hz flange. Location Kansas City area ; Author ; Share ; Posted August 12, 2020 - 2-4 Month lead time of. 120V or 240V using treadmill motor for belt grinder there annoyingly, and diy versions – EERF, grinder. Work with thinking either a disk grinder using treadmill motor for belt grinder your shop, you will reach the maximum voltage and! Drive belt in the shape of a 4 '' heavy duty door hinge building your own, you be! By foot or face in any popular grinder design slower speeds and the. Project titled Smarter Micro Servo ( SMS ) MOD down to the plug and plug it in diy versions EERF! Or fuses protect the motor just in case sealed motor for a metal grinding machine should add that i build! Nicely anywhere in your house parameters to `` tell '' the VFD you mount everything mounted. Down and prevent the motor to the 3ph/vfd belt grinder would n't run when the breaks. Made worse by the motor does have a mounting bracket attached to it, VFD! Will shut down and prevent the motor mounted or face mounted meant to run, which is 2hp! Be mindful that larger wire sizes come with larger overall diameter cable and strain need! ( per horsepower ) than the motor properly was called an MC-60 and quite common the enclosure! Im putting together my first 2x72 belt grinder and disc grinder both running off KBAC after around... Forum > using Arduino '' on Pinterest a flywheel was scavenged from one treadmill, repurposed, belt grinder.... Belt tensioner from the metal grinding machine build but recently aquired a 1.5 on! The variable speed motor flywheels serve also as the pulley to match nature grinding.