Bridgeport Resto

yea that one way on the saddle is the worst looking out of all of them. This is getting beyond my knowledge/terminology but do I just need to do frosting to help with oil retention? if so how can I do this on the cheap, I'm not afraid and learning/attempting new things however I just don't have any tools to do the job. Is there any homemade or backyard engineered tools that could do the job.

About that lawnmower though, I don't mow with it but I have a little helper who loves to mow with it when I do :)
 
Here are are few threads from the "similar threads" section that show up on our posts. I really like that feature. There is a great close up of a before and after. The user is also noted as active. Give him a shout out.
http://www.hobby-machinist.com/threads/bridgeport-rescraping.39115/

I know it seems to go on and .... And the tooling and skills you learn and need never end. Best of all .. it's just plain fun! Keep the updates coming. you're doing great!
Jeff
 
PS- I left it w/ just the one post as several of the other posts said to get in touch w/ Sidecar who is the BP resto king.

Also- For heavy lifting and before you hurt something - There are a few posts on a 2 ton crane/engine lifts... I got mine off Amazon. I see the same import model all over now. HF too. Tractor Supply had the best value chain-fall hoist w/ 8ft of travel! And of course - the HF 1ton Gantry (grey one) w/ 20% coupon to lift & set the rest of your gear off the hauler and into the bay. You know it will not stop w/ the 1 Mill. What's next? The Lathe right? :grin big: PS- the cars go outside here. I sent my beloved 99 Tahoe to the lot and took the bay for my shop! :cool 3:
http://www.hobby-machinist.com/threads/very-good-shop-hoist-2ton-cinnci-2-in-the-air-photo.25184/
 
Thanks Jeff for the replies, I'll have to do some more digging into scraping/flaking ways.

Got a quick question, took the table bearing assemblies apart and noticed on 1 side there were 2 bearings and the other there was only 1 and it was a different bearing then the other 2. whats up with that?
btw the numbers I got were 1 - FAFNIR 204KTT and 2 - FAFNIR RM204KT4

I wanted to replace the bearings but not sure how many to get ... 3 or 4?

Leadscrew Assembly.jpg
 
N8TheGreat said:
..........table bearing assemblies apart and noticed on 1 side there were 2 bearings and the other there was only 1 and it was a different bearing then the other 2. whats up with that?
btw the numbers I got were 1 - FAFNIR 204KTT and 2 - FAFNIR RM204KT4

I wanted to replace the bearings but not sure how many to get ... 3 or 4?

View attachment 113307
Click to expand...

The 204KTT and 204KT4 are common bearing numbers. Not sure what RM204KT4 is about. The RM designation is odd to me. I'll have to get my bearing book out and see what is specific about each of the numbers. I don't recall them as being any fancy bearing per say. They are "shielded both sides" type of bearing. Your local bearing house should have them.

EDIT:

My bearing book says the 204KTT wider than normal width (.625") bearing with felt or labyrinth seals on both ends. Both inner and outer race are the same length.
The 204KT4 again is a wider than normal width bearing, but the inner race is .600" wide and the outer race is .625" wide or very close to this. Standard 204 bearing width is .5512".

The thing that bugs me is the Bridgeport manual I have says 770200 in the parts list and XF-12 on one of the assembly drawings. The 770200 I assume matches up to a 7020 BCA bearing or a Fafnir 204KT bearing, bot have a single felt or labyrinth seal. It also matches up with Norma FAG 77000 series bearings as 77020 size, which has felt or labyrinth seal.
 
Last edited by a moderator:
Picked up my end mills yesterday that I bought from auction :)
20151102_154217.jpg 20151102_192911.jpg
I have a serious auction addiction lol ... so much stuff so cheap
 
Update:
Ordered my new motor and VFD for the machine :)

and currently cleaning and sanding and preparing the machine for paint

Sorry no pictures of the progress :-(
 
New motor and VFD showed up!!! :)
VFD - Huan Yang 220V 2.2KW 3HP
Motor - Inverter Duty 2HP 208/230/460Volt 3Phase 3510RPM
20151111_173203.jpg 20151116_161740.jpg
 
Got the first coat of paint on last night, it will need one more before I call it good.
I rolled and tipped the paint and it seemed to cover and flow out nicely even in the cooler weather, using Rustoleum Oil based Enamel. Its amazing what a little paint will do :)

20151116_194602.jpg 20151116_194614.jpg 20151116_194622.jpg 20151116_213406.jpg 20151116_213415.jpg 20151116_213428.jpg
 
N8TheGreat said:
New motor and VFD showed up!!! :)
VFD - Huan Yang 220V 2.2KW 3HP
Motor - Inverter Duty 2HP 208/230/460Volt 3Phase 3510RPM
View attachment 114423 View attachment 114424
Click to expand...

The mill is looking good!

One problem I see is the motor RPM. Mills normally use a 1725 RPM (1800 RPM nominal , 4 pole) motor, as opposed to a 3510 (3600 RPM nominal, 2 pole). The torque from the 2 pole motor is going to be 1/2 at the same HP rating of a 4 pole motor. Normal spindle speed range is about 500 to 4000 when in direct drive on that mill. A 2:1 belt reduction in the drive would fix the problem on the low end of the range, but you can not spin that motor up to 8000 RPM to get the max speed. The 3 HP Baldor SuperE inverter motors are rated for 6000 RPM max, I don't know about yours.

Also the VFD you chose is not quite correct for a non vari-drive mill. That VFD is a volts/Hz type VFD, where you should be using a Sensorless Vector type VFD for full speed/torque control over the needed range.

At the very least, I would see if you can send that motor back and get a 4 pole (1800 RPM) motor.
 
You must log in or register to reply here.
Back
Top