Bolton B290VG Lathe Motor Repair Upgrade 2 HP Servo BLDC + Weiss WBL290F Precision Matthews & more

Here we diagnose a Bolton B290VG 11-1/2" x 29 Lathe with running issues. The lathe is only 2 years old and when sold it was claimed to have a brush less Servo motor. It did not. The fault was: Intermittent no run, funny noises, surging and poor performance.
Because replacement main boards are all but non existent:
We decide in short order to upgrade the motor to our two HP servo Motor.
This job is done with very limited hand tools. The kind of tools most interested in lathes will have in their garage.
If not for the time spent on making the video, the whole job would take less than 2 hours.
There are a few performance results shown at the end of the video.
This is 1 of 2, maybe 3 videos related to this lathe. It contains all the information needed to get a dead lathe back up and running. The cost is low and the performance is nearly double of the original system.
Video 2 will be all about how to build the new electronics into the original locations. This will include emergency cut out + Magnetic and thermal overload protection.
Get the kit here:
www.servomotorkit.com/product...
We take no responsibility and accept no liability for anything you attempt to build or operate after watching any of our videos. It is your responsibility to insure safe operation, suitability, fit and proper application of any machine you build or modify. Our liability is limited to the purchase price of the items you purchase directly from us.

[@thenextscoopadventures]

Excellent video

[@offgridmangogrower]

I’d like to show you a set up using a bldc motor driven by a variac no fancy motor control…

[@maxausterweil8829]

Do you know if this kit would fit onto a precision Matthew’s PM-1127VF-LB ?

[@danielmartin382]

Contact me at www.servomotorkit.com Than we can swap images and measurements to see what is possible.
The first kit was actually listed today at www.servomotorkit.com/product-page/bolton-b290vg-lathe-motor-upgrade-2-hp-servo-bldc
Thanks

[@darrylwhitman8475]

I have a grizzly G4000 lathe 110v single phase , I need to stay with 110 voltage , what do you offer in a 1 hp set up?? Darryl

[@danielmartin382]

Hi Darryl.
Almost all our systems are 120 volt, We suggest 1 hp ~ 1.3 hp. The best for your lathe depends on available space and what you plan to machine.
There are a few options on the drive. Realistically you will not need the toothed belt so a single 5mm v pulley is suitable. If you decide to use the toothed low gear belt:
What is the bore on your existing motor pulley? Does the motor still run so you can cut a new pulley or bore a second pulley? There are many varibles to consider.
I would fit this motor if possible see:
www.servomotorkit.com/product-page/1-000-watt-servo-motor-external-1-34hp-12-nm-torque-300-3-500-rpm
If that is too large consider:
www.servomotorkit.com/product-page/750-watt-servo-motor-driver-1-0hp-10-nm-torque
We do not have a kit for your lathe yet.
We would be happy to work with you to make one. To start we will need images of the belt drive and motor.
When finished there should be a complete kit with end results, images, videos and specs.
We will ask you for copy's of certain parts and pay you for them.
Optionally we can wholesale you motors and you sell your kit on our site as well as anywhere else you see fit.
Start by contacting me through our web site: www.servomotorkit.com
Thank you for your interest.
Dan

[@darrylwhitman8475]

@@danielmartin382 The motor is roughy 11" long an 5.25" in diameter, I looked at your website , an leaning towards the 1500 wat 2 hp w/ VFD. I will take off the motor pulley to check the shaft, it's chinese lathe , hope its 15mm shaft, lol I will be in touch soon

[@danielmartin382]

Darryl
We have a customer building a Grizzly 9972 with the 2 hp right now. This is the same design lathe as your G4000, just a couple sizes larger.
Contact me on the website and I will send you some images of what he is doing. He chose to buy a second pulley and bore it to fit the motor.
1500 W for your lathe is overkill. Still the 1500 is my motor of choice simply because it is so solid and performs real well
(often called a beast by those turning 4 foot long wood blocks).
These are not VFD, They are Brush-less computer controlled DC motors with large bearings and motor shafts. Their are 12 fields inside (3 sets of 3 fields) and intensely strong magnets on the armature. Generally twice the torque of most motors with the same watt ratings. We have several customers who replaced their 750W BLDC with ours who state: Their lathe stalled out with the original 750 and not with ours. I bet the shaft is 13 mm or less.
thanks
Dan