Anyone know who manufactures the "42C" style motors for Grainger? They
appear to be pump motors and only come in 1725 or 3450 RPM flavors... I'd
love to talk to someone about what else might be available... But
Grainger's list is very limited in both HP and RPM offerings.

A good example of one I'm looking at is Grainger's part #3N842

They appear to be GE motors with the Dayton name but... Knowing this group,
somebody knows the answer for certain.

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R

Joe AutoDrill wrote:
Anyone know who manufactures the "42C" style motors for Grainger? They
appear to be pump motors and only come in 1725 or 3450 RPM flavors... I'd
love to talk to someone about what else might be available... But
Grainger's list is very limited in both HP and RPM offerings.

A good example of one I'm looking at is Grainger's part #3N842

They appear to be GE motors with the Dayton name but... Knowing this group,
somebody knows the answer for certain.

If they're induction machines your choices are limited. Basically you
get (line frequency in RPM) / ((motor poles)/2) - slip. So you have
3600/(2/2) - slip = 3450, 3600/(4/2) - slip = 1725. There are some six
pole motors out there, giving you a tad less than 1200 RPM, but they'd
be hard to find.

Of course, you could move to France and choose between 3000, 1500 or
1000 RPM, but I don't think that's what you meant...

If you want more flexibility you need a VFD with (probably) a
three-phase induction motor, a DC motor with controller, or a _really
big_ brushless motor (i.e. synchronous motor) with the correct drive. I
know the theory; someone who knows practice will soon chime in with part
numbers, I hope.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html

Tim Wescott wrote:

Joe AutoDrill wrote:

Anyone know who manufactures the "42C" style motors for Grainger?
They appear to be pump motors and only come in 1725 or 3450 RPM
flavors... I'd love to talk to someone about what else might be
available... But Grainger's list is very limited in both HP and RPM
offerings.

A good example of one I'm looking at is Grainger's part #3N842

They appear to be GE motors with the Dayton name but... Knowing this
group, somebody knows the answer for certain.

If they're induction machines your choices are limited. Basically you
get (line frequency in RPM) / ((motor poles)/2) - slip. So you have
3600/(2/2) - slip = 3450, 3600/(4/2) - slip = 1725. There are some
six pole motors out there, giving you a tad less than 1200 RPM, but
they'd be hard to find.

Of course, you could move to France and choose between 3000, 1500 or
1000 RPM, but I don't think that's what you meant...

Why limit it to France, AFAIK all of Europe is 50Hz and would give those
speeds. Must be some historical thing but when I moved back to the UK in
1982, many people seemd to be of the opinion that the US still ran on DC.


If you want more flexibility you need a VFD with (probably) a
three-phase induction motor, a DC motor with controller, or a _really
big_ brushless motor (i.e. synchronous motor) with the correct drive.
I know the theory; someone who knows practice will soon chime in with
part numbers, I hope.

Joe AutoDrill writes:

Anyone know who manufactures the "42C" style motors for Grainger?

May be Magnetek.

David Billington wrote:

Why limit it to France, AFAIK all of Europe is 50Hz and would give those
speeds. Must be some historical thing but when I moved back to the UK in
1982, many people seemd to be of the opinion that the US still ran on DC.

Back in the late 70's Japan was 50Hz in part of the country and 60Hz in the
rest. Don't know if they harmonized it by now.

Wes

If they're induction machines your choices are limited. Basically you get
(line frequency in RPM) / ((motor poles)/2) - slip. So you have
3600/(2/2) - slip = 3450, 3600/(4/2) - slip = 1725. There are some six
pole motors out there, giving you a tad less than 1200 RPM, but they'd be
hard to find.

We use the 56C face motor line almost exclusively now and find 3450, 1725,
and 1140 RPM motors readily available from 1/3 HP up to around 2 HP. Above
2 HP, they are a bit harder to get a hold of... But what I really want to
find is a motor that isn't 6" or larger in diameter and the Grainger motors
I've held in my hand and used from time to time are exactly that... But
with a 42C face...

So... Basically, I'm on a quest for a 42C face motor suppler that offers up
to 2 HP models and 6" or less in diameter... Slim chance, I know, but ya
never know! I can always special order them, but keeping a fast delivery
timeframe is crucial for most of my customer's orders...

Of course, you could move to France and choose between 3000, 1500 or 1000
RPM, but I don't think that's what you meant...

No thanks...

If you want more flexibility you need a VFD with (probably) a three-phase
induction motor, a DC motor with controller, or a _really big_ brushless
motor (i.e. synchronous motor) with the correct drive. I know the theory;
someone who knows practice will soon chime in with part numbers, I hope.

My needs are in the size arena rather than the speed arena for the most
part... But the info you provide is very good and appreciated.

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R

Back in the late 70's Japan was 50Hz in part of the country and 60Hz in
the
rest. Don't know if they harmonized it by now.

Sounds like us with the 208V issue in some older cities, etc... Most of us
have true 230/460... But some are stuck with 208... And if you go north,
some of Canada has this funny 550/600V issue. grin

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R

Anyone know who manufactures the "42C" style motors for Grainger?

May be Magnetek.

I'll have to peruse their catalog later today....
--


Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R

On Oct 30, 5:38 am, "Joe AutoDrill" wrote:
Anyone know who manufactures the "42C" style motors for Grainger?

May be Magnetek.

I'll have to peruse their catalog later today....
--

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills:http://www.AutoDrill.com
Multiple Spindle Drills:http://www.Multi-Drill.com

V8013-R

Graingers changes suppliers of their Dayton branded
motors from time to time. There is no guarantee the
motor you buy today will be the motor you buy to-
morrow. They simply change the descriptor (which
is the single letter at the end of the part number)
which is the same thing they do when changing a
material, color, or some other minor "improvement."

Unfortunately sometimes the changes they make
should actually require a different part number
because the newly "upgraded" part will not
function properly, in the required application,
as we "found out the hard way" on multiple
occasions.

The lure of Graingers low prices and availability
is great but for an OEM to depend on them is a
stretch, IMHO.

dennis
in nca

The lure of Graingers low prices and availability
is great but for an OEM to depend on them is a
stretch, IMHO.

Good point and thus my search for the motor manufacturer that supplies
Grainer with the specific motors I seek...

Might as well hijack my own thread now... Suppliers sometimes work hard to
be "backward compatible" and sometimes they don't work at it at all...

We have improvided our design on our basic product 3-4 times in 10 years...
And machine #1 will receive 99.9% of my new parts without modification. We
try very hard at it... ....Mostly because *I* don't want to have to
figure out how to fit a new part on an old machine in order to keep a
customer happy when their line is down and they are loosing lots of money a
day...

It would really suck if a motor manufacturer we use went out of business and
they are the only people making a certain frame / size motor. We've only
had one motor manufacturer mess us up in this way and it was Baldor... Hard
to imagine considering we use much less famous motor manufacturers on other
jobs, but they moved the junction box of a small single phase motor to the
side of the motor from the back of the motor... So much for the clearance
issue I thought didn't exist...

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R

Grainer's low price?


"rigger" wrote in message
ups.com...
On Oct 30, 5:38 am, "Joe AutoDrill" wrote:
Anyone know who manufactures the "42C" style motors for Grainger?

May be Magnetek.

I'll have to peruse their catalog later today....
--

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills:http://www.AutoDrill.com
Multiple Spindle Drills:http://www.Multi-Drill.com

V8013-R

Graingers changes suppliers of their Dayton branded
motors from time to time. There is no guarantee the
motor you buy today will be the motor you buy to-
morrow. They simply change the descriptor (which
is the single letter at the end of the part number)
which is the same thing they do when changing a
material, color, or some other minor "improvement."

Unfortunately sometimes the changes they make
should actually require a different part number
because the newly "upgraded" part will not
function properly, in the required application,
as we "found out the hard way" on multiple
occasions.

The lure of Graingers low prices and availability
is great but for an OEM to depend on them is a
stretch, IMHO.

dennis
in nca

On Oct 30, 10:40 am, "Joe AutoDrill" wrote:
The lure of Graingers low prices and availability
is great but for an OEM to depend on them is a
stretch, IMHO.

Good point and thus my search for the motor manufacturer that supplies
Grainer with the specific motors I seek...

Might as well hijack my own thread now... Suppliers sometimes work hard to
be "backward compatible" and sometimes they don't work at it at all...

We have improvided our design on our basic product 3-4 times in 10 years...
And machine #1 will receive 99.9% of my new parts without modification. We
try very hard at it... ....Mostly because *I* don't want to have to
figure out how to fit a new part on an old machine in order to keep a
customer happy when their line is down and they are loosing lots of money a
day...

It would really suck if a motor manufacturer we use went out of business and
they are the only people making a certain frame / size motor. We've only
had one motor manufacturer mess us up in this way and it was Baldor... Hard
to imagine considering we use much less famous motor manufacturers on other
jobs, but they moved the junction box of a small single phase motor to the
side of the motor from the back of the motor... So much for the clearance
issue I thought didn't exist...

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills:http://www.AutoDrill.com
Multiple Spindle Drills:http://www.Multi-Drill.com

V8013-R

Across the last 22+ years I've seen Dayton, Lincoln and
other motor manufacturers make changes to their motors
which, while not changing the frame size basics, have made
them unsuitable for our use (some of their other electrical
items as well).

If you're a large enough operation to have motors built to
your specification, you may have it better, but for most of
us (smaller than say....GE) you can only go with the flow.

In a couple of instances created by imazingly bad design,
the only option available for replacement motors was
rebuilding the existing motor (s); how embarassing.

On a junction box location/size issue we found we had to
disassemble the motors and then send them through our
machine shop for modification before they could go to
the assembly dept. This was, of course, an situation
which we tried to avoid at all costs: Forcing the customer
to purchase proprietary repair parts only from us; not
good, especially when you're thousands of miles apart.

dennis
in nca

On Oct 31, 8:35 pm, "Tony" wrote:
Grainer's low price?

"rigger" wrote in message

ups.com...



On Oct 30, 5:38 am, "Joe AutoDrill" wrote:
Anyone know who manufactures the "42C" style motors for Grainger?

May be Magnetek.

I'll have to peruse their catalog later today....
--

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills:http://www.AutoDrill.com
Multiple Spindle Drills:http://www.Multi-Drill.com

V8013-R

Graingers changes suppliers of their Dayton branded
motors from time to time. There is no guarantee the
motor you buy today will be the motor you buy to-
morrow. They simply change the descriptor (which
is the single letter at the end of the part number)
which is the same thing they do when changing a
material, color, or some other minor "improvement."

Unfortunately sometimes the changes they make
should actually require a different part number
because the newly "upgraded" part will not
function properly, in the required application,
as we "found out the hard way" on multiple
occasions.

The lure of Graingers low prices and availability
is great but for an OEM to depend on them is a
stretch, IMHO.

dennis
in nca- Hide quoted text -

- Show quoted text -

Low prices sometimes will come back and bite
you in the @#$ when you least expect it. I've
seen this happen many times. If you're looking
for good long operation/reputation don't let price
be your most important guide. Instead use dur-
ability first and availability second.

dennis
in nca

"Joe AutoDrill" wrote:

Back in the late 70's Japan was 50Hz in part of the country and 60Hz in
the
rest. Don't know if they harmonized it by now.

Sounds like us with the 208V issue in some older cities, etc... Most of us
have true 230/460... But some are stuck with 208... And if you go north,
some of Canada has this funny 550/600V issue. grin


Yup, and I have a German machine that I think likes 380. Japan seems
100/200 volts btw. I just replaced a fluorescent light fixture in an Okuma
cnc lathe. The fixture had connections for 50 and 60HZ.

You just can't take anything for granted electrically.

Wes