Best motor for a Enco lathe

[Pevehouse]

Hello all, let me start by telling you what I have on the lathe currently. It’s a belt drive Enco 12 x 36 from 1986 . I’m running a 1hp motor ,3 phase with a vfd. Looking to upgrade the motor to a 2 hp since my current motor is malfunctioning. Just wanted some recommendations for motor size, RPM, frame size. Was hoping to catch someone who has worked with these older Taiwanese machines. Thanks in advance

 

[woodchucker]

well, you want the same frame size. You just want to up the motor.
I went to a 2hp 3ph motor on my mill, which had I think a 3/4 hp single.
I don't regret it at all. I can run very low rpm and it doesn't complain when I need the torque.

 

[Ulma Doctor]

I have a pair of Shemwai SW900B lathes(1236) Taiwanese
I did a 56 frame 2hp 1750 rpm on one , 56 frame 3hp 1750 rpm on the other .
The 2hp is sufficient for just about everything

 

[Ulma Doctor]

Here’s the write ups

VFD Retrofit - Shenwai SW900B 1236 Lathe

I finally got around to doing the retrofit on my Shenwai SW900B 1236 lathe it came with a 1.5 hp(ish) 115v/220v single phase motor, as the OEM powerplant. i had to change that :grin: i surfed the site that sounds a lot like E-PAY, and found an inverter rated 2 hp motor by Marathon, very...

www.hobby-machinist.com

Huanyang VFD Conversion, Shenwai SW900B 1236 Lathe

I did a VFD and 3 phase 3 hp motor upgrade to my Shenwai 900B lathe, because i had a problem with the anemic single phase 1 hp single phase motor the lathe came with. the issue was really evident when parting stainless. so much as to make me want to do the upgrade. i wanted to use the original...

www.hobby-machinist.com

 

[Pevehouse]

well, you want the same frame size. You just want to up the motor.
I went to a 2hp 3ph motor on my mill, which had I think a 3/4 hp single.
I don't regret it at all. I can run very low rpm and it doesn't complain when I need the torque.

That’s right, just upping the hp. The motor that’s on her now is a 1hp 3 phase but she’s drawing way too many amps on start up and it’s tripping my vfd. Could always use more power. That coupled with the the shipment from grizzly which contains a brand new back splash for my Enco. I decided that now is the time to do the swap, as if I don’t have enough going on already,lol. Gonna check on eBay and see if I can luck up on a good motor. I have a couple here that I picked up pretty cheap. Got a 3hp baldor that I wish I could fit and an older 2 hp however neither has the correct frame. The baldor is a 184 frame and it’s pretty large to boot. The century does have a PA56HZ frame. It’s wired for high voltage at the moment

 

[Pevehouse]

Here’s the write ups

VFD Retrofit - Shenwai SW900B 1236 Lathe

I finally got around to doing the retrofit on my Shenwai SW900B 1236 lathe it came with a 1.5 hp(ish) 115v/220v single phase motor, as the OEM powerplant. i had to change that :grin: i surfed the site that sounds a lot like E-PAY, and found an inverter rated 2 hp motor by Marathon, very...

www.hobby-machinist.com

Huanyang VFD Conversion, Shenwai SW900B 1236 Lathe

I did a VFD and 3 phase 3 hp motor upgrade to my Shenwai 900B lathe, because i had a problem with the anemic single phase 1 hp single phase motor the lathe came with. the issue was really evident when parting stainless. so much as to make me want to do the upgrade. i wanted to use the original...

www.hobby-machinist.com

Thank you for posting those. I will use those as reference material. Looks close to the same platform as my Enco.

 

[Pevehouse]

Quick question for you guys. Mine has a 143T frame 1hp 7/8 shaft 1760rpm. What are my options? Would a 145T work? Seems like the frames are pretty standard based on what the hp ratings are. Finding a 2hp with a 143T frame is not going to be doable from what I can see

 

[woodchucker]

baldor has a good sheet on frames, what the output shaft size is, and other info.
Then it's a matter of seeing if the mounting plate or flange depending aligns with what you have.

 

[Ulma Doctor]

Quick question for you guys. Mine has a 143T frame 1hp 7/8 shaft 1760rpm. What are my options? Would a 145T work? Seems like the frames are pretty standard based on what the hp ratings are. Finding a 2hp with a 143T frame is not going to be doable from what I can see

Worldwide Electric 2HP 1744 RPM 145T Frame 3 Phase 230/460 VAC Electric Motor | eBay

Find many great new & used options and get the best deals for Worldwide Electric 2HP 1744 RPM 145T Frame 3 Phase 230/460 VAC Electric Motor at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[Ulma Doctor]

A 56HZ has a 7/8 shaft