Ordered New Lathe - Updated

[jareese]

Edit - POST UPDATED.

I have ordered a new lathe. An Acra 1740TVS-3. The bad news is I'm going from BXA to CXA. I have A LOT of holders, and 2 different quick release tool posts. One is an Aloris, and the other is a knock-off. I'll also be going from a MT-3 to an MT-4...

So.......... I will be selling my EISEN 1440EV Precision Lathe and MANY accessories for it. I am not selling anything right now - I am still currently using it for my gunsmithing business.

I'm thinking of offering everything as a package deal at first, (read that again) so basically someone can get pretty much everything they need, minus tools and inserts, for about the price of a new machine alone - Not too sure what that will be yet. I'm figuring the lathe plus everything going with it would be over 19 thou new.
The lathe is only a couple years old and works flawlessly, now... Total Cumulative run time is only 10 hours. If it's not in use, or won't be for a bit, it's off.
I posted a vid not too long ago on taking an alignment cut on it recently. I only had ~0.0001 deviation over 10" taking 5 thou cuts.

The EISEN 1440EV Precision Lathe is the same lathe as the PM-1440HVT-2 from Precision Matthews. Same headstock length, but different spindle bore, and the Eisen comes standard with the cast iron base, the PM iron base is an addon, and PM is more expensive.
PM has 2" spindle bore, this has 1 9/16" - a 5/8" isn't going to make any difference unless you're doing a lot of large caliber ELR type rigs, but you're still not going to fit an action with recoil lug into it. Need over 2.5" in order to dial in the barrel at the muzzle (With receiver and recoil lug attached) - With short barrels or a TBAS anyway. You may be able to get longer barrels in the spindle while still connected to the actions using in and outboard spiders. I don't like those though as they can introduce flex and stress in the item you're machining, the TBAS eliminates all that.

New lathe is about 90-120 days out. Eisen 1440EV is located in SW Wisconsin, near Spring Green. We can schedule a time to see under power prior to new delivery. Once new is in place, the Eisen will not be powered.

YOU MOVE/LOAD - I do not have equipment or rigging to move or help load.

If you know anyone looking for a Taiwanese variable speed 14x40 let them know please. I'd appreciate it.

Details:
EISEN 1440EV Precision Lathe, variable speed, 36-2200rpm
5hp Motor - Single or three phase 220/240v input - Yaskawa V1000 7.5 HP VFD
Cast Iron base - machine weight ~2700lbs
D1-4 Spindle
Change Gears for metric threads
Factory 6" three jaw & 8" four jaw with chuck keys
Face plate (14"?)
*Bald Eagle gunsmith Chuck
*Outboard Spider
*Additional D1-4 plain backplate - unused, still wrapped.
Steady Rest - unused
Follow Rest - unused
MT-3 tail stock
2x MT-3 Dead centers, one carbide tipped
MT-5 spindle adapter
*MT-3 live centers - 1x Low Profile and 1x standard
*MT-3 ER32 Collet chuck - Collets not included
*MT-3 Jacob's drill chuck
*MT-3 Precision Matthews keyless drill chuck
Factory "import" Aloris Clone BXA Quick change tool post
*True Aloris BXA Quick change tool post - Currently mounted
*Aloris 'BXA8' threading tool with 2 blades
*Roughly 30 BXA tool holders (Tools/inserts NOT included)
**2x auto retract threading tools with auto threading tool stop (feed straight in, don't use compound) - Link to YouTube for Auto Retract Threader
*"Hold Fast" BXA Tool Rack - Ebay store link
micrometer carriage stop
Work lamp
Ditron DV-200 2 axis DRO Display + Manual (Not currently installed, pictured TouchDRO NOT included) Scales are mounted
Manuals for Lathe and Yaskawa VFD

 

[Sniperhandle]

Are you equipped to handle 4500 pounds? I remember the issues you had moving a 1800 pound machine. The bigger machines are a little clumsy to operate when you are used to a 14.

 

[jareese]

Are you equipped to handle 4500 pounds? I remember the issues you had moving a 1800 pound machine. The bigger machines are a little clumsy to operate when you are used to a 14.

Right? Having a millwright do this one. Delivery and setup.
Edit: Correction - Current lathe is about 2700lbs

 

[Sniperhandle]

Have you thought of the required power upgrade? You will need at least #6 wire and a minimum of a 50 amp circuit for a 10hp motor.

 

[jareese]

Have you thought of the required power upgrade? You will need at least #6 wire and a minimum of a 50 amp circuit for a 10hp motor.

Wiring should be capable, currently 8 or 10ga - just need to upgrade to a 30amp 220 breaker.

 

[Sniperhandle]

Wiring should be capable, currently 8 or 10ga - just need to upgrade to a 30amp 220 breaker.

I think you should look deeper into this, Your wiring/breaker setup is not big enough for a 10 horsepower motor.

 

[jareese]

I think you should look deeper into this, Your wiring/breaker setup is not big enough for a 10 horsepower motor.

Not a huge setback - it's a short run. I'll make sure all is good prior to operating.

 

[BuffaloBill]

Congrats on the new lathe you have coming. Having that large bore through the spindle would be handy sometimes. And the weight is good. My RML-1440 has what appears to be the same or similar gear change levers, but only has a little over 2” through the spindle.

And although the motor is capable of 10hp, I can’t imagine taking a cut heavy enough to use more than half of that. So I would guess other than starting current, the average current being drawn will easily be inside your 30A breaker.

Do you think starting current will pop the 30A? I’m not sure. I put a VFD on my 5hp so the ramp parameter prevents large starting currents. I have not done this, but couldn’t a 5hp- rated VFD be used with a 10hp motor, as long as the motor wasn’t loaded heavier than what the VFD’s current limits were set to? The VFD will protect itself, etc.

 

[Sniperhandle]

I don't know Bill, You can take shortcuts in some areas but electrical is not an area I am willing to do it on. Insurance companies use that kind of stuff to not pay. Fires are never a good thing and popping breakers is hard on everything too.

 

[BuffaloBill]

I hear you, but the job of the breaker is to protect wiring, prevent fires, etc. As long as the breaker is sized appropriately for the wire, I don’t see how there would be any greater risk. But perhaps regulatory folks might see that differently.

 

[Sniperhandle]

Running to small of wiring is going to build up heat.

 

[jareese]

It has a VFD, so I'll be going from Single to Three Phase via that.

 

[Sniperhandle]

Which requires even more amps.

 

[jareese]

I know a few industrial master electricians. It will be taken care of.

 

[jareese]

So in looking at the wiring schematics - the fast fuses are only 30 amp, but it does have a 15HP Yaskawa inverter. I'll let my electrician know.

Edit: Looks like the model number shown would actually be the Yaskawa CIMR-G7U20111. I may need to wait until the unit is here to verify which model. In looking at Yaskawa's website, it looks like that "should" be the one it will come with.

 

[BuffaloBill]

That’s nice to have a VFD. I see the 30A is specified for 3phase, so like Sniperhandle mentioned, being fed by single-phase will be higher amperage (square root of 3 x 30A). That would be required if expecting to make use of the 10hp rating, which you may not need.

The bulk capacitors after rectification in the VFD circuitry, see a much larger ripple current when being fed by single phase. Aluminum electrolytic capacitor lifespan’s a function of ripple current and temperature. When I was installing one on my lathe the Hitachi lineup maxed out with a 5hp rating on single-phase (on their 7.5hp rated, 3P model). This was maybe 6-7 years ago. Should the capacitor bank wear out, it’s designed to be replaceable. I doubt I’ll accumulate enough lathe hours to do that anytime soon.

 

[jareese]

That’s nice to have a VFD. I see the 30A is specified for 3phase, so like Sniperhandle mentioned, being fed by single-phase will be higher amperage (square root of 3 x 30A). That would be required if expecting to make use of the 10hp rating, which you may not need.

The bulk capacitors after rectification in the VFD circuitry, see a much larger ripple current when being fed by single phase. Aluminum electrolytic capacitor lifespan’s a function of ripple current and temperature. When I was installing one on my lathe the Hitachi lineup maxed out with a 5hp rating on single-phase (on their 7.5hp rated, 3P model). This was maybe 6-7 years ago. Should the capacitor bank wear out, it’s designed to be replaceable. I doubt I’ll accumulate enough lathe hours to do that anytime soon.

Good info - thanks. I will be talking with my electrician today. Still a few months out, but I like to be prepared. The wiring run is fairly short in my little shop, and I think I may already have 40-50A double throw breakers. Easy enough to get if not.

 

[LVLAaron]

Just run a 50 amp circuit. If you have to run a new one might as well be 50. You never know when you’ll want to plug a welder in there.

I say this as someone who has plugged a welder into the oven plug in my kitchen.

 

[xr650rRider]

I would be surprised if that Yaskawa G7 allowed single phase input. I think they are 3 phase input drives. A 15HP drive would be 11,190 watts and 240 volt 3 phase input would be 46.6 amps, so probably rated for 460 volt input.

Those are Sunmaster made lathes.
https://www.sunmaster-cnc.com/pro-fc-v-series-variable-speed-lathe.html

Precision Matthews TL line of lathes are the same and they go up to a 1660 and says will operate on single or 3 phase no converter required..............so it may very well allow single phase input. They say 30 amp input for 5HP. I would bet the 15HP is severely de-rated to allow single phase input.
https://www.precisionmatthews.com/collections/lathes/products/pm-tl-v#product-tabs

 

[jareese]

I would be surprised if that Yaskawa G7 allowed single phase input. I think they are 3 phase input drives. A 15HP drive would be 11,190 watts and 240 volt 3 phase input would be 46.6 amps, so probably rated for 460 volt input.

Those are Sunmaster made lathes.
https://www.sunmaster-cnc.com/pro-fc-v-series-variable-speed-lathe.html

Precision Matthews TL line of lathes are the same and they go up to a 1660 and says will operate on single or 3 phase no converter required..............so it may very well allow single phase input. They say 30 amp input for 5HP. I would bet the 15HP is severely de-rated to allow single phase input.
https://www.precisionmatthews.com/collections/lathes/products/pm-tl-v#product-tabs

Never mind... I figured out my issue. (at least on this subject.) It is in fact a 10HP motor.