Ramping with the SGE-R Insert for Mill 4-15™

A small thing can make a big difference. See this here? That is what makes the difference between having the capability to ramp with a tool or not. We're talking about this tool here, the Mill 4-15. The shoulder mill that's well known for its capabilities to create excellent wall surface finishes especially when running multiple passes.  It literally leaves no visible marks behind. It has a maximum depth of cut of 15 millimeters and four cutting edges, but it can't ramp, not with this insert, but now it can with this one. See the big "R" on the insert? That stands for ramping, and that's the new SGE-R geometry. Let's check it out! 

Ramping 4140 Steel with the SGE-R Insert

We're machining on this block of 4140 steel. We'll start with this 50 millimeter cutter and 5 of the SGE geometry inserts in the cutter. That's the one that cannot ramp, and you'll see that it can't right away. We're taking a 5 millimeter radial depth of cut pass. Axial depth of cut starts at 9.9 millimeters and exits at 15 millimeters axial depth cut. That's a 1.36 degree ramping angle. Look at the sparks, it's leaving a lot of burrs. This doesn't look good at all, but no surprise right?

That's why you need to pay attention to the "R" on the insert. Only the SGE-R geometry is capable of ramping. Let's clean this up and try this again. This time with the SGE-R geometry, same cutting conditions, same ramping angle of 1.36 degrees.

Nice! No sparks, no burrs, beautiful.

Next, we're going to create a pocket with helical interpolation. Same ramping angle again, it's almost silent. Very soft cutting action, it's pretty amazing.

Finally, we'll create another pocket. This time, with a very tight situation where the chips have nowhere to go. We're zigzagging back and forth, same maximum ramp angle again, same cutting parameters. We're seeing and hearing the same again, very soft cut, very good looking surface.

The SGE-R is a great addition to the Mill 4-15 insert portfolio. It also comes with four cutting edges, one corner radii, and five different grades. It works great in nearly all materials, and makes the Mill 4-15 more versatile than ever. Thanks for checking out the Mill 4-15™ and the new SGE-R Insert for ramping.

Related Articles

Please adjust the following properties from

ISO Catalog Number

ANSI Catalog Number

to find similar products.

The following files are available

Please select a file to download


You are about to create a duplicate . Do you want to proceed?
You are about to permanently delete Do you want to proceed?
You are about to permanently delete and all items within that folder. Do you want to proceed?
Are you sure you want to permanently delete these items?
What would you like to rename your to?

A folder with the name already exists .

Please enter a valid name
Please enter a name for the duplicate
Please enter a valid name
You are about to add to your My Solutions page. Do you want to proceed?

A folder with the name already exists .

Please enter a valid name
Send a copy of

Oops, you have used your own email address! Please enter another email address to proceed.

An active user does not exist under that email address. Please Click Here , to send a registration invitation to

Please enter a valid Email
Please enter a valid name
You should be logged to see your dashboard information
Session expired due to inactivity, please login again
The product/s () you were trying to add to the cart is/are not available, please contact customer service
item(s) successfully added to the cart
View Cart

. Please enter the desired qty for the material(s) you want to include in your promotion or Proceed Without Promotion and only your base materials will be added to the cart.

Minimum quantity should be

SAP Material Number ISO Catalog Number Grade    
Thank you for your registration, pending approval & completion of the registration, your access is currently limited. Full utilization of product search capabilities & collaboration space is available and will remain. Please allow 2 business days for registration completion.

You are about to leave the Solution building process.

Are you sure you want to leave?