240V on/off push button for 20" disc sander

[TTMotorsports]

Ok so I recently was given a 20" Apex disc grinder. It is 240V and was hard wired into a small sub panel where he used the circuit breaker as the on/off switch. I'm using it a location where I'm gonna have it plugged into a 240V outlet in my wall so I need to wire in an on/off switch into a pedal box I'll mount into the sander with a cord out to plug in. I've seen some on Amazon but they vary so much in quality front china and I want to buy it once and have a good switch. What switch have you used and would recommend for me to use for this. Thanks.

 

[Davefr]

I would get a big heavy cast iron foot switch so it doesn't move around much. Look for a vintage GE model. I have one like this and it's built like a brick *********.

They also make them with a foot guard.

Heavy Duty CR150A Foot Pedal Daniel Woodhead Double Or Single Pole 600v Switch | eBay

Find many great new & used options and get the best deals for Heavy Duty CR150A Foot Pedal Daniel Woodhead Double Or Single Pole 600v Switch at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[LeeG]

You could also look for replacement parts for quality industrial machines. Here is a switch for a Kalamazoo grinder. https://kalamazooind.com/product/710-329-push-button-start-stop-switch/

Lee

 

[TTMotorsports]

Ok well I was totally wrong when looked deeper into the machine. It's actually a 1hp 1750 rpm 3 phase so I need to do a phase converter to run this machine. Don't need variable speed so now my question and research is into a static phase converter for this 1hp 240v 3 phase motor to run on single phase or even better would be replace the motor with a 120v since I don't use it very often and would make re wiring not necessary.

So now I gotta run the motor numbers and find a replacement 120v motor for this thing.

Thanks for the quick replies guys

 

[loganb]

Vfd for 1 hp 240v in/3phase out will likely be cheaper than new motor. Easier or not depends on your comfort with wiring

 

[GeoBruin]

Vfd for 1 hp 240v in/3phase out will likely be cheaper than new motor. Easier or not depends on your comfort with wiring

Yes, and to be honest, a variable speed 20" disc sander sounds awesome.

 

[bpwoodworking]

Vfd is great for this type of stuff. I usually wire them into typical push button controls so that it functions just like any other machine. Can put a dial on the switch panel for adjusting speed, or I believe you can do push buttons wired into preset speeds.

 

[TTMotorsports]

Yeah I get a vfd would be cheaper than a motor but I see it as opportunity to go to 120v now and maybe a more powerful motor too say a 1.5 hp

 

[tool_scrounge]

Yeah I get a vfd would be cheaper than a motor but I see it as opportunity to go to 120v now and maybe a more powerful motor too say a 1.5 hp

unless you have a 20A 120V circuit, you will likely blow circuit breakers at 1.5hp if you load the motor near the limit.

 

[TTMotorsports]

True I have 20 amp breakers though.

Now who can find a replacement single phase motor or even better a 120v setup for a 36A11-101 baldor. 7/8" keyed shaft, 1750 rpm with a 182 frame. Apex base has different mounting widths and slots for different motors and I can adapt a diff motor to it too easily.

Or a link to a vfd so I can run this existing motor.

 

[loganb]

Yeah I get a vfd would be cheaper than a motor but I see it as opportunity to go to 120v now and maybe a more powerful motor too say a 1.5 hp

120v in, 220v/3phase out vfd's are a thing

 

[TTMotorsports]

Would this work? Or do you guys know of a different alternative you would suggest?

https://www.amazon.com/dp/B09H7J4M96/?tag=atomicindus08-20

 

[Davefr]

Would this work? Or do you guys know of a different alternative you would suggest?

https://www.amazon.com/dp/B09H7J4M96/?tag=atomicindus08-20

Don't buy a no name VFD. The "chink-lish" documentation is usually terrible and there's very little online help. Go with the mainstream Teco L510. Tons of guys uses them and can offer advice, youtube videos and their documentation is very good.

 

[TTMotorsports]

Don't buy a no name VFD. The "chink-lish" documentation is usually terrible and there's very little online help. Go with the mainstream Teco L510. Tons of guys uses them and can offer advice, youtube videos and their documentation is very good.

Thanks those Teco aren't cheap so they must be good. I'll look into them.

 

[bpwoodworking]

I have used Hitachi mostly but would certainly use a name brand. I have one motor running on 115v input/3ph output and I have seen them for up to 1.5hp.

 

[Mgdoug3]

I have one of those Amazon VFDs and they are hit or miss. First one died in short order and the replacement has last for probably 3 years now. There's no warning that it's getting ready to fail, just one day it decides to not spin the motor again. When this one fails, I plan on upgrading to a name brand one but the VFD controls my smaller, back up lathe.

 

[tarmy]

I use these for my portable 240 tools. Adds a layer of safety as I can stop the saw with a knee and the DP with my forehead if anything gets loose or bound and I don’t want to let go!

 

[American Locomotive]

This is the guy:

VFD, 1hp, 115V, Single Phase Input, IP20, Medium D

VFD, 1hp, 115V, Single Phase Input, IP20, Medium Duty, 4.3 Amp, Speed Potentiometer, Easy to Program, Compact, 150% Overload, V/F Control, Auto-Torque Boost or Sensorless Vector, 3 Phase Output

www.wolfautomation.com

 

[F-22]

I would get a big heavy cast iron

A little unrelated, but I am restoring my lathe and do not like the modern plastic-y switches.

Is there any place that would sell a ~16A three phase switch that has some kind of a metal lever? I'd love cast iron, aluminium alloy, brass... The plastic is just unsightly.

Otherwise I may need to mill something myself and use a generic modern plastic switch at the back. A big alloy lever would be cool, but I think I'd need to mill some kind of a metal "stopper" to not damage the switch behind it.

 

[Woods_Wanderer]

I'll second a Teco L510, I run my combo belt/disc sander off the 1HP version and it was an easy install. 15amp 1ph 120v service running a 3.0 amp 240v 3ph motor.

 

[alfadan]

Don't buy a no name VFD. The "chink-lish" documentation is usually terrible and there's very little online help. Go with the mainstream Teco L510. Tons of guys uses them and can offer advice, youtube videos and their documentation is very good.

I agree on the L510. They are a good vfd and Clough42 on YouTube has a good video on programming this particular unit.
I got mine out of some place in Texas for like $150.

 

[Davefr]

A little unrelated, but I am restoring my lathe and do not like the modern plastic-y switches.

Is there any place that would sell a ~16A three phase switch that has some kind of a metal lever? I'd love cast iron, aluminium alloy, brass... The plastic is just unsightly.

Otherwise I may need to mill something myself and use a generic modern plastic switch at the back. A big alloy lever would be cool, but I think I'd need to mill some kind of a metal "stopper" to not damage the switch behind it.

How about something like this. Eaton NEMA enclosure w/Allen Bradley lever switch and pilot light. There's usually a ton of this industrial surplus stuff on Ebay.

 

[alfadan]

A little unrelated, but I am restoring my lathe and do not like the modern plastic-y switches.

Is there any place that would sell a ~16A three phase switch that has some kind of a metal lever? I'd love cast iron, aluminium alloy, brass... The plastic is just unsightly.

Otherwise I may need to mill something myself and use a generic modern plastic switch at the back. A big alloy lever would be cool, but I think I'd need to mill some kind of a metal "stopper" to not damage the switch behind it.

Look on ebay for an old Furnas or square-d switch.
My old Logan has a round knob but you have to reach under the chip tray to use it. I made an aluminum lever attached to it so its much easier to use and can even use my knee if **** hits the fan.

There are no issues with overtravel.

 

[Steve from Socal]

Seeing this a little late but, two things on your grinder. If you want to replace the motor get at least 2HP second, get a switch that allows rotation in both directions. I have a 20" disc grinder with 3HP, for wood 1 or 1 1/2 HP is OK, for metal you want more grunt. Being able to use either side of the table is important for many jobs.

 

[American Locomotive]

I would also like to mention that you can get an optional braking resistor for the Teco drive or do DC injection braking that allows you to stop the grinder fairly quickly. Like 4-5 seconds instead of the probably 2 minutes that thing will spin for.

 

[TTMotorsports]

Well I did as everyone said not to and got a cheap 110v vfd. It's working and variable speed and fwd/rev is cool too. We shall see how long it lasts.

Wisoqu VFD Variable Frequency Drive,Single‑Phase 110VAC Input 3‑Phase 220VAC Output Variable Frequency Inverter,Motor Speed Controller,220V 1500W AT5‑1500X, default https://www.amazon.com/dp/B09H7J4M96/?tag=atomicindus08-20