Corner Radius End Mills for Graphite

Keep the Graphite Corner Radius and Length Configuration Together

Match the GRB edge radius to the graphite part transition. Preserve the distinction between the corner profile and a full ball tip.

Match corner radius R to the part transition.
Check diameter D and radius R as separate dimensions.
Compare listed lengths across GRB-family models.
Review wall clearance and holder access for the selected tool.

Request a Model-by-Model Quote

Corner Radius End Mills for Graphite — Product Views

GRB / GRBH / GRBI / GRBJ Product Views

GRB / GRBH / GRBI / GRBJ corner radius end mills for graphite: full-tool group view — **Full-tool group view**

GRB / GRBH / GRBI / GRBJ corner radius end mills for graphite: angled full-tool view — **Angled full-tool view**

GRB / GRBH / GRBI / GRBJ corner radius end mills for graphite: single-tool angled view — **Single-tool angled view**

Compare the Listed Series and Configurations

Series	Flutes	Model records
GRB GRBH GRBI GRBJ	4 FLUTES	35

Corner Radius End Mills for Graphite Specifications

Review corner radius R, cutting diameter D, flute length Lc and effective length L1 where listed. Use each model row with its corresponding dimension drawing; preserve the defined symbols and units.

GRB GRBH GRBI GRBJ — 4 flutes

GRB GRBH GRBI GRBJ dimension drawing with original dimension symbols and figure references

Model	Cutting Diameter D (mm)	Corner Radius R (mm)	Flute Length Lc (mm)	Effective Length L1 (mm)	Overall Length L (mm)	Shank Diameter d (mm)	Flutes
GRB0302Z	D3	R0.2	9	20	L60	3	4
GRB0302A	D3	R0.2	9	20	L60	4	4
GRB0305Z	D3	R0.5	9	20	L60	3	4
GRB0305A	D3	R0.5	9	20	L60	4	4
GRB0402A	D4	R0.2	12	25	L60	4	4
GRB0405A	D4	R0.5	12	25	L60	4	4
GRB0602	D6	R0.2	20	35	L75	6	4
GRB0605	D6	R0.5	20	35	L75	6	4
GRB0610	D6	R1	20	35	L75	6	4
GRB0805	D8	R0.5	25	35	L75	8	4
GRB0810	D8	R1	25	35	L75	8	4
GRB1005	D10	R0.5	35	50	L110	10	4
GRB1010	D10	R1	35	50	L110	10	4
GRB1205	D12	R0.5	35	50	L110	12	4
GRB1210	D12	R1	35	50	L110	12	4
GRB1605	D16	R0.5	60	80	L150	16	4
GRB1610	D16	R1	60	80	L150	16	4

Model	Cutting Diameter D (mm)	Corner Radius R (mm)	Flute Length Lc (mm)	Effective Length L1 (mm)	Overall Length L (mm)	Shank Diameter d (mm)	Flutes
GRBH0305Z	D3	R0.5	9	30	L75	3	4
GRBH0405A	D4	R0.5	12	30	L75	4	4

Model	Cutting Diameter D (mm)	Corner Radius R (mm)	Flute Length Lc (mm)	Effective Length L1 (mm)	Overall Length L (mm)	Shank Diameter d (mm)	Flutes
GRBI0305Z	D3	R0.5	9	30	L100	3	4
GRBI0405A	D4	R0.5	12	30	L100	4	4
GRBI0602	D6	R0.2	25	40	L100	6	4
GRBI0605	D6	R0.5	25	40	L100	6	4
GRBI0610	D6	R1	25	40	L100	6	4
GRBI0805	D8	R0.5	30	40	L100	8	4
GRBI0810	D8	R1	30	40	L100	8	4

Model	Cutting Diameter D (mm)	Corner Radius R (mm)	Flute Length Lc (mm)	Effective Length L1 (mm)	Overall Length L (mm)	Shank Diameter d (mm)	Flutes
GRBJ0602	D6	R0.2	35	50	L150	6	4
GRBJ0605	D6	R0.5	35	50	L150	6	4
GRBJ0610	D6	R1	35	50	L150	6	4
GRBJ0805	D8	R0.5	40	60	L150	8	4
GRBJ0810	D8	R1	40	60	L150	8	4
GRBJ1005	D10	R0.5	40	60	L150	10	4
GRBJ1010	D10	R1	40	60	L150	10	4
GRBJ1205	D12	R0.5	50	70	L150	12	4
GRBJ1210	D12	R1	50	70	L150	12	4

Match the Tool to the Feature and Machine Setup

Working Profile

Match the GRB edge radius to the graphite part transition. Preserve the distinction between the corner profile and a full ball tip.

Access and Holding Conditions

Review the selected model’s length fields and tool-body clearance, with graphite grade, finish and dust-control conditions attached to the enquiry.

Workpiece and Cutting Conditions

Include the workpiece grade and condition, machining operation, machine and holder, tool projection and chip-removal arrangement. Coating and cutting-parameter requests need the actual application; a series name or tool colour does not establish suitability.

Graphite Grade and Dust Control

Include the actual graphite grade and the machine dust-control arrangement in the application enquiry. Keep any coating requirement attached to the selected model; the catalogue material category does not identify a coating chemistry.

Prepare the Range for Your Machining Customers

Graphite Corner Features

Use the part drawing to define the corner transition and surrounding clearance. Check the selected GRB radius independently of cutting diameter so the purchase line specifies the intended edge profile.

Drawing-Controlled Replacement

Compare the approved model, corner radius and length configuration before replacing a GRB tool. Record the graphite grade, operation and finish criteria so dimensional similarity is not mistaken for an application approval.

Ordering and Repeat Identification

Use the full model and quantity for every configuration. Add the part or tool drawing revision, acceptance requirements and any packing or label instructions so a repeat enquiry refers to the same item.

Production Equipment for Corner Radius End Mills for Graphite

Review the equipment alongside the corner radius R, cutting diameter D, flute length Lc and effective length L1 where listed required for the selected model. Factory scenes provide context; the ordered geometry and any agreed treatment remain item-specific.

**CNC Tool Grinding Cell**
CNC tool grinding equipment on the workshop floor.
A tool drawing needs a clear definition of the working profile before a grinding setup is evaluated. For GRB GRBH GRBI GRBJ models such as GRB0302Z (4 flutes), review corner radius, cutting diameter and flute length. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**CNC Grinding Equipment**
A row of enclosed CNC grinding machines.

**Tool Grinding Machine**
Enclosed tool-grinding equipment with an operator area alongside.
The relationship between the working edge and the holding section belongs in the dimensional review, not just the overall tool outline. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Automated Tool Grinding Cell**
A tool-grinding machine with a robotic handling enclosure.
For a repeat-order programme, keep the approved model and drawing revision together; an automated handling scene does not establish a tolerance guarantee. In the GRB GRBH GRBI GRBJ range, use GRB0302Z as a model reference when checking corner radius, cutting diameter and flute length against the part requirement.

**Automated Grinding Equipment**
Tool-grinding machines with enclosed robotic handling equipment.

**CNC Grinding Machines**
Enclosed CNC grinding equipment arranged along the workshop aisle.
Compare the required cutting section and clearance envelope when reviewing production requirements; the workshop overview is context for that discussion. Select GRB0302Z or another GRB GRBH GRBI GRBJ model against the specified corner transition and milled feature.

**Cleaning Equipment**
A multi-tank cleaning line in the tool production workshop.
Surface cleanliness matters when reviewing a cutting edge or a proposed surface treatment. Specify the condition required for inspection rather than assuming one cleaning cycle suits every tool. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Tool Finishing Workstations**
Machine workstations in the tool-finishing area.
The final working profile should be compared with the ordered geometry. Any finishing requirement needs to preserve the dimensions that define the selected tool. In the GRB GRBH GRBI GRBJ range, use GRB0302Z as a model reference when checking corner radius, cutting diameter and flute length against the part requirement.

**Cutting-Edge Preparation Equipment**
An operator beside a tool honing and polishing machine.
Edge preparation is a specification decision, not an automatic requirement. Discuss whether an edge treatment is appropriate for the selected geometry before adding it to an order. For GRB GRBH GRBI GRBJ models such as GRB0302Z (4 flutes), review corner radius, cutting diameter and flute length.

**Edge Honing and Polishing Equipment**
An operator beside enclosed tool honing equipment.
Where an edge treatment is requested, define the condition to be assessed without changing the intended cutting profile. This equipment view does not establish a treatment for every model. Select GRB0302Z or another GRB GRBH GRBI GRBJ model against the specified corner transition and milled feature. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Wet-Blasting Equipment**
Enclosed wet-blasting equipment in the surface-finishing area.
Wet blasting is shown as workshop equipment. Include it in a tool specification only when an applicable surface-treatment requirement has been agreed; it is not a default step for this range. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements.

**Wet-Blasting Equipment — Additional View**
An alternate image of enclosed wet-blasting equipment.
Use this additional equipment view as factory context. Whether a surface-treatment route is appropriate depends on the ordered tool and its acceptance requirements, not on the presence of a machine photograph. In the GRB GRBH GRBI GRBJ range, use GRB0302Z as a model reference when checking corner radius, cutting diameter and flute length against the part requirement. Preserve the specified corner radius, cutting diameter and flute length when discussing any optional treatment for GRB GRBH GRBI GRBJ.

**Tool Coating Equipment**
An enclosed tool-coating unit in the workshop.
Choose any coating against the workpiece and the selected tool geometry. Equipment photographs do not identify the coating chemistry or prove a hardness or tool-life rating. For GRB GRBH GRBI GRBJ models such as GRB0302Z (4 flutes), review corner radius, cutting diameter and flute length.

**Coating-Area Equipment**
Vacuum-chamber equipment in the coating area.
A surface-treatment enquiry should identify the selected model and required finish. Keep the coating requirement separate from dimensional acceptance and from unverified performance claims. Select GRB0302Z or another GRB GRBH GRBI GRBJ model against the specified corner transition and milled feature.

**Laser-Marking Station**
An operator working at an enclosed laser-marking station.
State the identification and label information required for the order. Any requested tool marking must be reviewed for the available non-cutting area rather than assumed suitable for every tool size. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

Inspection Equipment and Acceptance Requirements

Build the inspection request around corner radius R, cutting diameter D, flute length Lc and effective length L1 where listed. Define the measurement features and limits for the selected drawing. Installed runout and balance are separate from a dimensional or visual check.

**Tool Inspection Room**
Operators working at optical inspection and tool-measuring stations.

Cutting-Tool Profile Measurement

An operator positioning a cutting tool at a profile-measuring station.

Profile review should follow the actual working geometry and the dimension definitions on its drawing. Define the feature being assessed before comparing measurements or accepting a sample. For GRB GRBH GRBI GRBJ models such as GRB0302Z (4 flutes), review corner radius, cutting diameter and flute length. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Measurement Workstations**
Optical measuring workstations in the inspection area.

**Tool Presetting and Dimensional Review**
A tool presetter with an optical measuring arm and display.
Tool presetting supports a discussion of length and visible profile. Assess installed runout separately with the agreed holder, projection, position and method; this image alone does not prove runout capability. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Optical Tool Presetter**
An optical tool presetter and measurement display.
Agree the dimensional datum and measurement position before comparing presetting information. Overall length, cutting length and installed projection describe different aspects of a tool setup. In the GRB GRBH GRBI GRBJ range, use GRB0302Z as a model reference when checking corner radius, cutting diameter and flute length against the part requirement.

**Tool Measurement Setup**
An operator setting a tool in an enclosed measuring machine.
Identify the selected tool and the drawing features that need checking. Machine appearance alone cannot establish an inspection resolution, a tolerance limit or a completed result for that item. For GRB GRBH GRBI GRBJ models such as GRB0302Z (4 flutes), review corner radius, cutting diameter and flute length. Include the graphite grade, dust-control arrangement and required feature finish in the application review.

**Optical Inspection Workstations**
Operators inspecting tools at camera-based inspection workstations.
Define which cutting-edge and tip features need visual review and what constitutes an unacceptable defect. Use a suitable view of the working section rather than judging it from a full-tool photograph. Select GRB0302Z or another GRB GRBH GRBI GRBJ model against the specified corner transition and milled feature.

**Balancing Instrument**
A balancing instrument with a protective enclosure.
Balancing equipment is shown as factory context. Balance and runout are different assessments; do not treat this photograph as proof that an individual cutter has been balanced or that its cutting diameter is within tolerance. Keep the drawing for GRB0302Z and other GRB GRBH GRBI GRBJ models attached to the order's corner radius, cutting diameter and flute length requirements. For GRB GRBH GRBI GRBJ, any balance requirement needs its own assembly definition and acceptance basis.

Prepare a Clear Quote and Reorder List

Use one line for each series, model and quantity. For a trial order, describe the machining result you need to assess. For a repeat order, include the approved item or drawing revision so the enquiry identifies the same tool.

List the complete model code, quantity per model and any required dimensional tolerances.
Provide the workpiece, machining operation and machine or holder details for application review.
State individual tool protection, label information and outer-pack requirements in the enquiry.
Include the destination, required delivery date and any private-label or documentation requirements.

Corner Radius End Mills for Graphite Purchasing FAQ

Does the GRB radius describe a ball nose or an edge corner?

Use the corner-radius end-profile drawing for this family. R identifies the specified corner transition, not a reason to substitute a ball nose cutter. Match the part profile before comparing diameter.

Can equal-diameter GRB variants have different ordering requirements?

Yes. Keep corner radius, flute length, effective length where listed, holding dimensions and full model identity in the comparison. The shared diameter does not establish the same configuration.

How should graphite corner clearance be checked before ordering?

Provide the part transition and a section showing nearby walls or fixtures. Compare the working radius and the clearance behind it separately. A tool that fits the opening may still have an unsuitable corner profile.

Does the GRB application category establish a surface treatment or tool life?

No. A graphite-family title does not establish coating chemistry, inspection results or a life guarantee. Include the required treatment and acceptance conditions in the item specification rather than inferring them from appearance.

Which conditions make a GRB replacement comparison meaningful?

Keep the model geometry, graphite grade, operation, engagement and setup documented, together with the required finish. Identify changes in radius or length explicitly instead of describing both tools as the same diameter.

What belongs in a GRB corner-radius purchasing request?

Send full models, R and length requirements, quantities and the graphite feature drawing. Add machine and dust-control conditions where relevant, plus inspection, marking, packing and destination requirements.

Request a Quote for Corner Radius End Mills for Graphite

Send the complete model list and quantities, or provide your tool and part drawings. Include the workpiece, operation, machine and holder, dimensional requirements and destination.

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