Re: [Emc-users] Spindle Motors

On Wednesday 30 May 2018 20:21:27 John Bald wrote: > Thanks Gene, > > you must have overlooked the beginning of my post where I mentioned it > was new surplus. It was less than $200 and he had 2 left so I couldn't > pass them up. :-) I figure at that price I can always use the second > one to

Re: [Emc-users] Spindle Motors

Thanks Gene, you must have overlooked the beginning of my post where I mentioned it was new surplus. It was less than $200 and he had 2 left so I couldn't pass them up. :-) I figure at that price I can always use the second one to upgrade the no name chineese motor on my lathe someday. 

Re: [Emc-users] Spindle Motors

On Wednesday 30 May 2018 17:52:03 John Bald wrote: > I picked up a couple of surplus marathon 1.5hp inverter duty 1000:1 > motors awhile back like this one: > https://www.regalbeloit.com/Products/Catalog?model=145THTR5328 > Look around John, that half a horse bigger is costing you over 800 bucks.

Re: [Emc-users] Spindle Motors

> On 30 May 2018, at 22:52, John Bald wrote: > > I picked up a couple of surplus marathon 1.5hp inverter duty 1000:1 motors > awhile back like this one: > https://www.regalbeloit.com/Products/Catalog?model=145THTR5328 1000:1 speed ratio seems to suggest they will make a good spindle motor.

Re: [Emc-users] Spindle Motors

I picked up a couple of surplus marathon 1.5hp inverter duty 1000:1 motors awhile back like this one: https://www.regalbeloit.com/Products/Catalog?model=145THTR5328 My plan is to replace the original single phase/single speed 1hp motor on my PM727 mill and also add belt drive similar to what

Re: [Emc-users] Spindle Motors

On Sat, May 26, 2018, 15:20 andy pugh wrote: > On 26 May 2018 at 20:49, jeremy youngs wrote: > > >> I want to use one clutch and two sprags for a compact envelope  > > That ought to work and might be easier to package. > > I overhaul transmissions and

Re: [Emc-users] Spindle Motors

On 26 May 2018 at 20:49, jeremy youngs wrote: >> I want to use one clutch and two sprags for a compact envelope  That ought to work and might be easier to package. The one-way roller clutch bearings are pretty cheap:

Re: [Emc-users] Spindle Motors

On 05/26/2018 02:35 PM, Chris Albertson wrote: The Toyota Prius-C uses a 10 HP electric DC motor and an electrically controlled step-less continuously variable transmission. The Honda Civic hybrids also have a CVT and some kind of motor to run the belt up and down. This might be a bit too

[Emc-users] Spindle Motors

Depending on what ratio's you want, you could use 4 pulleys; on the motor, big and small, pulleys stacked on the spindle, small and big, pulleys stacked Obviously these pairs will give you step up, step down, but you could use other pairs, maybe 1:1 and 1:3 for step down. Now you use two belts

Re: [Emc-users] Spindle Motors

On Sat, May 26, 2018, 13:32 andy pugh wrote: > On 26 May 2018 at 19:20, Jon Elson wrote: > > > I don't know what machine you have, but some machines have stock retrofit > > kits to replace the crummy Chinese drive scheme with something using high > >

Re: [Emc-users] Spindle Motors

On Sat, May 26, 2018 at 11:31 AM, andy pugh wrote: > On 26 May 2018 at 19:20, Jon Elson wrote: > >> I don't know what machine you have, but some machines have stock retrofit >> kits to replace the crummy Chinese drive scheme with something using high

Re: [Emc-users] Spindle Motors

Now that sounds interesting. John > > It isn't too hard to imagine a system using two permanently-engaged > different-ratio belt-drives and a couple of car air-conditioning > clutches to choose between them. > > -- > atp

Re: [Emc-users] Spindle Motors

On 26 May 2018 at 19:20, Jon Elson wrote: > I don't know what machine you have, but some machines have stock retrofit > kits to replace the crummy Chinese drive scheme with something using high > performance belts. It isn't too hard to imagine a system using two

Re: [Emc-users] Spindle Motors

On 05/26/2018 12:08 PM, John Dammeyer wrote: That motor can produce rated torque down to near zero speed. But, a belt reduction INCREASES torque as you lower spindle speed. In some cases like heavy fly cutting, face mills, boring, and drilling with large diameter drills, you need that extra

Re: [Emc-users] Spindle Motors

On 26 May 2018, at 16:13, Jon Elson wrote: >> > That motor can produce rated torque down to near zero speed. But, a belt > reduction INCREASES torque as you lower spindle speed. In some cases like > heavy fly cutting, face mills, boring, and drilling with large diameter > drills, you need

Re: [Emc-users] Spindle Motors

-26-18 4:53 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Spindle Motors > > On 26 May 2018 at 09:43, Gene Heskett <ghesk...@shentel.net> wrote: > > On Saturday 26 May 2018 01:24:36 John Dammeyer wrote: > > > >> Is something li

Re: [Emc-users] Spindle Motors

> That motor can produce rated torque down to near zero > speed. But, a belt reduction INCREASES torque as you lower > spindle speed. In some cases like heavy fly cutting, face > mills, boring, and drilling with large diameter drills, you > need that extra torque. When I put my Bridgeport in

Re: [Emc-users] Spindle Motors

On 05/26/2018 12:24 AM, John Dammeyer wrote: Is something like this equivalent to a single phase 220VAC 2HP motor? https://www.ebay.ca/itm/122137567723 Just thinking of how I'll add variable speed to my mill. Would it even need a reduction set of pulleys or is 1:1 adequate? If the bearings

Re: [Emc-users] Spindle Motors

On 26 May 2018 at 09:43, Gene Heskett wrote: > On Saturday 26 May 2018 01:24:36 John Dammeyer wrote: > >> Is something like this equivalent to a single phase 220VAC 2HP motor? >> >> https://www.ebay.ca/itm/122137567723 >> >> Just thinking of how I'll add variable speed to my

Re: [Emc-users] Spindle Motors

On Saturday 26 May 2018 01:24:36 John Dammeyer wrote: > Is something like this equivalent to a single phase 220VAC 2HP motor? > > https://www.ebay.ca/itm/122137567723 > > Just thinking of how I'll add variable speed to my mill. Would it > even need a reduction set of pulleys or is 1:1 adequate?

[Emc-users] Spindle Motors

Is something like this equivalent to a single phase 220VAC 2HP motor? https://www.ebay.ca/itm/122137567723 Just thinking of how I'll add variable speed to my mill. Would it even need a reduction set of pulleys or is 1:1 adequate? If the bearings can handle it a belt ratio of 1:2 to get 6000