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Bridgewood 12” Jointer BW-12JC

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Forum topic by Fiddy posted 08-22-2018 12:36 AM 602 views 0 times favorited 18 replies Add to Favorites Watch
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Fiddy

187 posts in 1488 days


08-22-2018 12:36 AM

Topic tags/keywords: jointer 12” bridgewood 3 phase rotary converter

Just picked up a new jointer and I’m pretty pumped. Have been looking for a used 8” option (I have a 6” Delta) but haven’t had much luck for a year or so now. Almost every morning I do a quick C.L. search and this last weekend I did some searching outside of my area. Ended up seeing a 12” Bridgewood that just came up. That night I reached out and Monday had a quick call with the owner. Long and short everything checked out and today I drove down to pick it up. It was a 3 hour drive one way so definitely a poke, but worth it for me.

My question to everyone is this. I have no 3 phase, but do have access to a rotary converter for an affordable price. I also have an older Belsaw planer in storage with a Baldor 5hp single phase. Haven’t at all looked into compatibility, but I’m sure that motor or some other option could be fitted. I’m just unsure of what would be best. Don’t necessarily have any plans for additional 3 phase, but I didn’t plan on this one either. Any advice would be appreciated. I would assume changing motor would also require a change in switch and also unsure of how the safety stop lever would be affected. Again, I haven’t looked into much yet and I’m far from an electrician, just looking to see if anyone else has had a similar scenario and what they would advise.

Here are some photos – machine is clean and everything seems to be tight. We did fire it up at his shop (he’s retiring) and it hummed perfectly. Just got it unloaded tonight and placed into shop, pretty massive!


18 replies so far

View Aj2's profile

Aj2

1810 posts in 1975 days


#1 posted 08-22-2018 01:09 AM

Well done nice score. Keep the 3ph motor I run a Rpc so that’s what I recommend.
Variable frequency drives are popular but I think they are only set up for one machine.
Good luck

-- Aj

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GrantA

536 posts in 1585 days


#2 posted 08-22-2018 01:10 AM

Nice find! What are the motor specs on it? If it’s a common frame you can pickup a single phase motor inexpensively and swap it out. If it’s an oddball like a Unisaw motor Im not familiar personally with rotary converters but I have a couple AC drives in my shop which can be had for around $200 assuming it’s under 5hp

View Jared_S's profile

Jared_S

66 posts in 136 days


#3 posted 08-22-2018 01:27 AM

I’d go with a vfd if it’s under 17 full load amps. If it’s close to 12fla fuji makes a 12a 3hp vfd for well under $300 or Teco has a 10a 3hp model for around $230.

Im looking into this myself right now as I’m now up to three 3ph machines (1hp, 3hp & 5.5hp) and the vfd route is still less money than an American 10hp rpc that I’d need to start the 5.5hp shaper

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TheFridge

10513 posts in 1663 days


#4 posted 08-22-2018 01:40 AM

Very very nice.

If you can get a rpc for cheap go that route. You can feed multiple machines out of one panel with it.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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Fiddy

187 posts in 1488 days


#5 posted 08-22-2018 01:59 AM

Thanks, guys.

Here’s a pic of the motor I just took.

Not familiar with a VFD – anyone able to provide a quick explanation and if possible comparison to RPC?

View Jared_S's profile

Jared_S

66 posts in 136 days


#6 posted 08-22-2018 02:21 AM



Thanks, guys.

Here’s a pic of the motor I just took.

Not familiar with a VFD – anyone able to provide a quick explanation and if possible comparison to RPC?

- Fiddy

Vector frequency drive. They are used one per motor. They convert single phase 120 or 240 into 3ph and do motor control (also typically done 3ph to 3ph for that reason)

It allows soft starts, breaking, instant direction change (think milling machine or metal lathe) and it allows frequency modulation. You can slow down or speed up by changing the output hertz. Running at 1/2 or double (30 to 120hz) isn’t that uncommon in certain applications.

The benefit in this application is its about 1/4 the cost of a rpc and offers 100% of the motor nameplate output

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Aj2

1810 posts in 1975 days


#7 posted 08-22-2018 03:40 AM

The downside to a vfd is they sometimes produce a very annoying high pitch whine. They also produce a square dc wave with a lot of electronics.
I’ve asked many different electricians on job sites that I work at and they all love them. They make good money replacing them and motors that vfds run.
If your just using the jointer for fun maybe a vfd won’t let you down.
Keep the 3ph motor it’s proper for that machine.

-- Aj

View AlaskaGuy's profile

AlaskaGuy

4653 posts in 2486 days


#8 posted 08-22-2018 04:35 AM

For what it’s worth. I been running an RPC in my shop for 19 years. Not one single problem with it or any of my 3 phase equipment.

-- Alaskan's for Global warming!

View GrantA's profile

GrantA

536 posts in 1585 days


#9 posted 08-22-2018 09:31 AM

The good news is it’s a common frame (145t) but being 5hp you’re not going to save money dealing the motor, again I’m not sure on the rotary converters but I know on the vfd (aka AC drive – I use ABB drives bought from Wistex, Google them – best prices I’ve found) you get a soft start where it’ll ramp up to full speed. On the jointer I don’t think you’d want to slow down the cutterhead but the option is there as well if a need arises

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Fiddy

187 posts in 1488 days


#10 posted 08-22-2018 09:33 AM

Thanks for the input and feedback. I’ll do some reading up, but at least I have a better direction. Thanks, guys.

View Fiddy's profile

Fiddy

187 posts in 1488 days


#11 posted 08-22-2018 09:50 AM

Thanks, Grant – appreciate the heads up.

View GrantA's profile

GrantA

536 posts in 1585 days


#12 posted 08-22-2018 01:20 PM

I’m curious, I just looked at Wistex and to get a single phase 240v input 5hp 3phase output vfd I don’t know if you’ll get under about $650.
I remember finding that now and I ended up buying a single phase 5hp motor to use for my dust collector build and I’ll just add a soft start to it. Unless a rotary converter is considerably cheaper I’d consider replacing the motor (looks like the one on there is a TEFC though not ODP, so it’s going to be in the $500-600 range) then you could sell the 3ph motor to recoup some of the cost

View BroncoBrian's profile

BroncoBrian

834 posts in 2136 days


#13 posted 08-22-2018 02:38 PM

Just noticed you are in Ohio. That machine is illegal there. I will drive up and swap it with my 8” Jet to save you the legal trouble. Keep your garage door open for me.

Your welcome.

-- I think they could take sesame seeds off the market and I wouldn't even care. I can't imagine five years from now saying, "Man, remember sesame seeds? What happened? All the buns are blank."

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Fiddy

187 posts in 1488 days


#14 posted 08-22-2018 04:11 PM

I was curious about that as well, Grant – I tried looking quickly this morning and seems to be costly, at least as much as a 7.5hp rpc. Still not sure what I’ll do on replacing motor, or simply getting the rpc. Thanks again for the input.

Brian, appreciate you looking out – haha!

View Aj2's profile

Aj2

1810 posts in 1975 days


#15 posted 08-22-2018 05:39 PM

Have you checked the used market in your area ?Craigslist. I wouldn’t buy a used vfd but a used converter sure why not. It’s just a bigger 3ph motor, shaftless motors are very robust.

-- Aj

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