cylindrical grinding 304 stainless

R

RoyDam

Plastic

Joined

Apr 6, 2018

• Apr 6, 2018

• #1

Does anyone have experience cylindrical grinding 304 stainless shafts.
Having some problems today.
Mainly looking for a good wheel recommendation, but would take input on speeds and feeds too if you have them.
14" diameter wheel
10" long shaft - diameter ranges from .35 to .75.
grinding .3750 and .5000 bearing fits needing to hold .0003".
Turned fit (pre-grind) about .006 to .008" over finished size.

Thanks in advance,
Roy

 

M

mkd

Stainless

Joined

Jun 8, 2013

• Apr 6, 2018

• #2

I'd say the fact that you are not having that stock centerless ground is the root of your trouble.
Just spitballing.

 

norb

Cast Iron

Joined

Sep 24, 2009

Location

tonawanda new york

• Apr 6, 2018

• #3

RoyDam said:

Does anyone have experience cylindrical grinding 304 stainless shafts.
Having some problems today.
Mainly looking for a good wheel recommendation, but would take input on speeds and feeds too if you have them.
14" diameter wheel
10" long shaft - diameter ranges from .35 to .75.
grinding .3750 and .5000 bearing fits needing to hold .0003".
Turned fit (pre-grind) about .006 to .008" over finished size.

Thanks in advance,
Roy

Click to expand...

Use a very open wheel. It tends to heat up and grow very fast unless the wheel is open.

 

M

Milland

Diamond

Joined

Jul 6, 2006

Location

Hillsboro, New Hampshire

• Apr 6, 2018

• #4

Look at your coolant setup and be sure you're not letting the entrained air from the wheel push the coolant away from the grinding zone. And can we presume you're using at least one steady rest?

 

R

RoyDam

Plastic

Joined

Apr 6, 2018

• Apr 9, 2018

• #5

thanks for the reply and yes we are using one.
would you have any type, grit and grade recommendations?

 

R

RoyDam

Plastic

Joined

Apr 6, 2018

• Apr 9, 2018

• #6

Thank you, would you have any more specific recommendation for type, grit and grade.

 

L

Lost in LA

Cast Iron

Joined

Jan 31, 2005

Location

Los Angeles

• Apr 9, 2018

• #7

Call the pros--Tell them what you got and what you want to do. Be prepared to buy a wheel from them.

I use Radiac Abrasives: 1-800-851-1095

You may need a silicon carbide for 304SS

Lost

 

R

RoyDam

Plastic

Joined

Apr 6, 2018

• Apr 10, 2018

• #8

Thanks for the input - we are having conversations with a Norton Rep.
Was hoping for some "hands on" advice from someone actually performing similar process.
Thanks again

 

D

Dan from Oakland

Titanium

Joined

Sep 15, 2005

Location

Oakland, CA

• Apr 10, 2018

• #9

Seems like a 32A wheel in about 46 grit would work just fine for that, but . . . . . that's my go to wheel for lots of jobs so. . . .

 

R

RoyDam

Plastic

Joined

Apr 6, 2018

• Apr 12, 2018

• #10

Thanks Dan, appreciate your input - we will give that a try

 

M

Milland

Diamond

Joined

Jul 6, 2006

Location

Hillsboro, New Hampshire

• Apr 12, 2018

• #11

This new article from CTE may be of interest on "non-wheel" grinding issues:

https://www.ctemag.com/news/articles/reducing-hydroplaning-forces-while-grinding