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YG1-29257 – 7/32 x 1/2 x 7/8 x 3-1/4 – 4 Flute Corner Rounding 8% Cobalt

Original price was: $96.39.Current price is: $72.30.

Cobalt End Mill

UPC: N/A SKU: YG1-29257 Categories: Cobalt End Mill, HSS & Cobalt End Mill, Milling, YG-1

EDP No.	29257
Description	4 FLUTE CORNER ROUNDING 8% COBALT
Size	7/32 x 1/2 x 7/8 x 3-1/4
Available Qty.	Call for availability

Specifications

Series	E2237
Long Description	5/16 x 7/32 x 3 1/4 OAL HSSCo8 0° Helix 4 Flute Bright Corner Rounding End Mill
Number of Flutes	4
Diameter (inch)	0.3125
Diameter (mm)	7.9375
Shank Dia. (inch)	0.5
Shank Dia. (mm)	12.7
Length of Cut (inch)	0.2188
Length of Cut (mm)	5.556
Outside diameter	0.875
Overall Length (inch)	3.25
Overall Length (mm)	82.55
Type	HSSCo8, 4 Flute Corner Rounding
Shank Style	Flat
Rounding Radius	0.2188
Pilot Diameter	0.3125
Coating	Bright
Material	Co8
Cut Type	Corner Rounding
Application Code	P,N
Cutting Direction	Right
System of Measurement	Inch
End Style	Square End
Single or Double End	Single End
Application	Steels,Aluminum,Copper and Copper alloys, Non Metalic materials
Extended Reach	No
Length	Corner Rounding
Variable Helix	No

HSS for Improved toughness. HSSCo8(Cobalt) for improved tool life. Uncoated, Inch and Metric sizes. 2 through 8-Flute Finishing. Roughing (Fine and Coarse pitch) Up to 2" diameter (45MM) Center Cutting Allows these endmills to drill into the part for the beginning of a slot. Reccomending for pocketing, tracer milling, cam milling, die sinking and slotting.

⚠ WARNING: This product can expose you to chemicals including cobalt, which is known to the State of California to cause cancer. Click here for more information.

Brand

YG1

Need This Tool Customized?

Every machining application is different. If this tool is close to what you need but not an exact fit, General Cutting Tools can help modify it for your specific job, machine, material, or production requirement.

We work with CNC shops, industrial manufacturers, tool rooms, and production facilities to provide tool modifications that improve fit, function, performance, and efficiency. Whether you need a small adjustment or a more specialized cutting tool solution, our team can review your requirements and recommend the best option.

Custom tool modifications can help reduce setup time, improve accuracy, extend tool life, solve clearance issues, and support more consistent production results.

Common Tool Customization Options

Diameter and OD Modifications

We can modify tool diameters to better match your application requirements, including cutting diameter changes, OD modifications, pilot diameter adjustments, step diameters, and shank diameter modifications.

Bore Modifications for Saw Blades

Custom saw blade bore modifications are available for hole diameter changes, pinholes, mounting holes, and keyway cutouts to help match your machine setup and cutting requirements.

Length Adjustments

Tools can be modified for specific reach, clearance, or setup needs. This may include overall length changes, flute length adjustments, reduced neck sections, extended reach designs, or shortened tools for improved rigidity.

Shank Modifications

Shank modifications can help ensure the tool fits properly in your holder, spindle, or machine setup. Common options include shank diameter changes, flats, Weldon flats, reduced shanks, and custom holding requirements.

Radius, Chamfer, and Corner Changes

We can customize corner radius, chamfer angles, edge breaks, and other profile details to meet part print requirements or improve cutting performance.

Step Tool Modifications

For applications that require multiple diameters or operations in a single tool, we can create or modify step tools to help reduce tool changes and improve production efficiency.

Flute and Cutting Edge Adjustments

Depending on the tool and application, flute length, cutting edge geometry, end cutting features, relief angles, and cutting edge shape may be modified to improve chip evacuation, cutting action, and tool performance.

Regrinding and Resharpening

Many cutting tools can be reground or resharpened to restore performance, extend tool life, and reduce replacement costs.

Custom Profiles and Special Forms

For unique part features, we can help provide special forms, custom profiles, custom radii, counterbores, countersinks, keyseat cutters, form tools, and other application-specific tooling solutions.

Material-Specific Tool Adjustments

We can help modify or recommend tooling based on the material being machined, including aluminum, brass, bronze, plastics, stainless steel, hardened steel, cast iron, composites, and other industrial materials.

Have a Drawing, Sample, or Part Print?

Send us your print, sketch, CAD file, photo, tool number, sample, or application details. For the fastest quote, include the material being cut, quantity needed, required dimensions, tolerances, and any machine or holder requirements.

Coating Options

Tool coatings can be selected or added to improve wear resistance, heat resistance, lubricity, and performance in specific materials such as steel, stainless steel, aluminum, cast iron, and high-temperature alloys.

Request a Custom Tool Modification

Need this tool changed for your application? Contact General Cutting Tools today to discuss your custom tooling needs. We can help you find the right solution for your machine, material, and production goals.

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