NRMBT Series · R017
Catalog group R017.
Use the symbols and values with the corresponding model table.
Tapered Corner Radius End Mill
Build your tapered corner radius end mill order around the feature drawing, not diameter alone. AXIMET’s four-flute NRMBT series gives you 28 catalog models to compare by end diameter, corner radius and effective length.
- Tapered neck and corner-radius end geometry
- Four-flute NRMBT series with 28 catalog models
- Model selection by diameter, radius, flute length and effective length
Match the Tool Profile to Your Machining Requirement
When a drawing calls for a corner radius and the tool must reach into a recessed feature, the end profile is only one part of the selection. The NRMBT catalog shows a tapered neck and a rounded corner at the cutting end. Check the flute length, neck clearance, projection and holder position against the part before choosing a model.
A tapered neck can give the body more section away from the tip, but it also takes up clearance. Check the wall angle and opening along the entire tool path; a tool that reaches the bottom may still interfere with a sidewall. Treat the catalog's effective length as a drawing dimension, and verify the assembled tool and holder against the actual feature.
Send the feature drawing, workpiece material and machine or holder details with your inquiry. These details help us identify the relevant catalog models for your application.
- Tapered-neck geometry with a radiused cutting corner
- Four-flute NRMBT series with model-level dimensions
- Compare radius, effective length and clearance before ordering
NRMBT Series and Dimensions
The NRMBT series is listed as a four-flute tapered corner radius end mill. Its catalog identifies each model using these dimensions:
| Catalog field | How it helps you specify the tool |
|---|---|
| Cutting diameter, D | Establishes the end diameter to compare with the feature drawing. |
| Corner radius, R | Identifies the rounded corner at the tool end. |
| Flute length, Lc | Indicates the length of the fluted cutting section. |
| Cone angle, α | Identifies the catalog’s taper-angle value. |
| Effective length, L1 | Helps you compare the working reach against the feature depth and clearance. |
| Overall length, L | Helps you assess the assembled tool length with the holder and machine. |
| Shank diameter, d | Helps identify the holder size required for the selected model. |
| Flutes, F | Identifies the number of flutes in the catalog series. |
The effective length and overall length describe different parts of the tool. Compare both with the catalog drawing when selecting a model; an overall length alone does not establish clearance inside a cavity.
Available Catalog Models
| Model | Flutes | Model | Flutes |
|---|---|---|---|
| NRMBT101002A | 4 | NRMBT101502A | 4 |
| NRMBT102002A | 4 | NRMBT102602A | 4 |
| NRMBT103002A | 4 | NRMBT151503A | 4 |
| NRMBT152003A | 4 | NRMBT152603A | 4 |
| NRMBT153003A | 4 | NRMBT153503A | 4 |
| NRMBT201505A | 4 | NRMBT202005A | 4 |
| NRMBT202605A | 4 | NRMBT203005A | 4 |
| NRMBT203505A | 4 | NRMBT204005A | 4 |
| NRMBT302005 | 4 | NRMBT302605 | 4 |
| NRMBT303005 | 4 | NRMBT303505 | 4 |
| NRMBT304005 | 4 | NRMBT305005 | 4 |
| NRMBT402610 | 4 | NRMBT403010 | 4 |
| NRMBT403510 | 4 | NRMBT404010 | 4 |
| NRMBT405010 | 4 | NRMBT406010 | 4 |
Select a model by comparing its complete dimensions with your drawing and toolholding setup. Contact us with a model number if you need the corresponding specification details. For a mixed order, list the required quantity beside each model; do not substitute a different reach or corner radius without checking the part drawing.
Where the Geometry Fits
For machining suppliers and industrial distributors, a tapered corner radius end mill can be considered for jobs where a rounded corner and access to a recessed or tapered feature both matter. Typical selection scenarios include die and mold features, radiused edges and profiled components. Suitability depends on the selected model, the workpiece and the machining setup.
For a cavity, provide the feature depth and the space available around the neck. For a radius feature, share the required corner geometry and whether the finished shape is controlled by the tool profile, the programmed path or both. Include a drawing when a visual description would leave the profile open to interpretation. For a distributor assortment, keep the customer's required reach and radius with each model rather than grouping all tools under a single nominal diameter.
Compare the End Profile Before Ordering
| Tool profile | Selection question |
|---|---|
| Tapered corner radius | Does the job need a flat end with a defined rounded corner and clearance around a tapered neck? |
| Tapered ball nose | Does the programmed feature call for a ball-shaped cutting end? |
| Straight corner radius | Can a straight geometry provide the required access and clearance? |
These profiles do not create identical shapes merely because their nominal diameters are similar. Compare the drawing, radius and toolpath before substituting one for another.
Specify the Tool for Your Order
To prepare an inquiry, include:
- NRMBT model number, or the requested cutting diameter and corner radius.
- Required flute length, effective length, overall length and shank diameter.
- The taper-angle notation shown on the drawing and the relevant feature geometry.
- Workpiece material, machining operation, machine and toolholder.
- Quantity by model and any marking or packaging requirements you would like to discuss.
For a repeat order, reference the previously approved model and drawing. If the feature or holder has changed, include the updated details so that the same model can be checked against the new setup.
Production and Quality Information
Tool geometry, dimensions and identification matter when a distributor is building a repeatable assortment. For each quoted NRMBT model, keep the model number, dimension drawing and applicable order requirements together. Share any inspection or acceptance requirements with the inquiry so they can be reviewed against the selected item.
Catalog Product Views and Dimension Drawings
Review the NRMBT product image, dimension drawing and original catalog symbols together.
Catalog Model Specifications
Compare the listed NRMBT models against your feature geometry and toolholder requirements. Blank fields and catalog dashes remain unavailable values; they are not converted to zero.
NRMBT · R017 · 4 FLUTES
| Type No. | Diameter (D, mm) | Corner R (R, mm) | Flute length (Lc, mm) | Cone angle (α) | Effective length (L1, mm) | Overall length (L, mm) | Shank Dia (d, mm) | Flutes (F) |
|---|---|---|---|---|---|---|---|---|
| NRMBT101002A | D1 | R0.2 | 1 | 0.9° | 10 | L50 | 4 | 4 |
| NRMBT101502A | D1 | R0.2 | 1 | 0.9° | 15 | L50 | 4 | 4 |
| NRMBT102002A | D1 | R0.2 | 1 | 0.9° | 20 | L60 | 4 | 4 |
| NRMBT102602A | D1 | R0.2 | 1 | 0.9° | 26 | L75 | 4 | 4 |
| NRMBT103002A | D1 | R0.2 | 1 | 0.9° | 30 | L75 | 4 | 4 |
| NRMBT151503A | D1.5 | R0.3 | 1.5 | 0.9° | 15 | L50 | 4 | 4 |
| NRMBT152003A | D1.5 | R0.3 | 1.5 | 0.9° | 20 | L60 | 4 | 4 |
| NRMBT152603A | D1.5 | R0.3 | 1.5 | 0.9° | 26 | L75 | 4 | 4 |
| NRMBT153003A | D1.5 | R0.3 | 1.5 | 0.9° | 30 | L75 | 4 | 4 |
| NRMBT153503A | D1.5 | R0.3 | 1.5 | 0.9° | 35 | L75 | 4 | 4 |
| NRMBT201505A | D2 | R0.5 | 2 | 0.9° | 15 | L50 | 4 | 4 |
| NRMBT202005A | D2 | R0.5 | 2 | 0.9° | 20 | L60 | 4 | 4 |
| NRMBT202605A | D2 | R0.5 | 2 | 0.9° | 26 | L75 | 4 | 4 |
| NRMBT203005A | D2 | R0.5 | 2 | 0.9° | 30 | L75 | 4 | 4 |
| NRMBT203505A | D2 | R0.5 | 2 | 0.9° | 35 | L75 | 4 | 4 |
| NRMBT204005A | D2 | R0.5 | 2 | 0.9° | 40 | L75 | 4 | 4 |
| NRMBT302005 | D3 | R0.5 | 3 | 0.9° | 20 | L60 | 6 | 4 |
| NRMBT302605 | D3 | R0.5 | 3 | 0.9° | 26 | L75 | 6 | 4 |
| NRMBT303005 | D3 | R0.5 | 3 | 0.9° | 30 | L75 | 6 | 4 |
| NRMBT303505 | D3 | R0.5 | 3 | 0.9° | 35 | L75 | 6 | 4 |
| NRMBT304005 | D3 | R0.5 | 3 | 0.9° | 40 | L75 | 6 | 4 |
| NRMBT305005 | D3 | R0.5 | 3 | 0.9° | 50 | L100 | 6 | 4 |
| NRMBT402610 | D4 | R1 | 4 | 0.9° | 26 | L75 | 6 | 4 |
| NRMBT403010 | D4 | R1 | 4 | 0.9° | 30 | L75 | 6 | 4 |
| NRMBT403510 | D4 | R1 | 4 | 0.9° | 35 | L75 | 6 | 4 |
| NRMBT404010 | D4 | R1 | 4 | 0.9° | 40 | L75 | 6 | 4 |
| NRMBT405010 | D4 | R1 | 4 | 0.9° | 50 | L100 | 6 | 4 |
| NRMBT406010 | D4 | R1 | 4 | 0.9° | 60 | L100 | 6 | 4 |
Production Equipment Reference
Explore our tool workshop equipment and prepare your tapered-cutter requirements using the NRMBT model and drawing.
CNC tool grinding cell. Define the tapered profile and corner radius using the tool drawing.
Cleaning equipment. Include any surface-condition requirement with the tapered-tool sample request.
CNC grinding equipment. List NRMBT models with their required cutter dimensions.
Tool grinding machine. Check cutting length and tool access against the cavity geometry.
Automated grinding cell. Reference the approved NRMBT model and drawing revision for repeat orders.
Automated grinding equipment. Keep the taper, radius and length together on each RFQ line.
CNC grinding machines. Compare the tool profile with available clearance at the cavity wall.
Tool coating equipment. Provide any specified coating along with the intended workpiece material.
Coating-area equipment. Review surface requirements against the selected tapered-cutter specification.
Laser-marking station. Supply the model code and any identification requirements with the order.
Tool finishing workstations. Identify the tapered profile and corner features needed for acceptance.
Cutting-edge preparation equipment. State any edge requirements for the selected end profile.
Edge honing and polishing equipment. Define the required corner condition in the tool specification.
Wet-blasting equipment. Include any surface-finish requirement for the selected tapered cutter.
Additional view of wet-blasting equipment. Keep the requested finish linked to its NRMBT model.
Inspection and Measurement Equipment Reference
For tapered corner-radius tools, identify the profile, radius and relevant dimensions on your order drawing.
Tool inspection room. Agree on drawing references for tapered-profile and radius acceptance.
Cutting-tool profile measurement. Refer to the taper symbol and corner radius on the source drawing.
Measurement workstations. Specify cutting length, effective length and shank dimensions separately.
Balancing instrument. Include any balance requirement for the intended machine setup.
Tool presetting equipment. Provide holder projection and cavity-clearance requirements.
Optical tool presetter. Distinguish effective length from overall length when planning the setup.
Optical inspection workstations. Identify the tapered end and corner features for sample review.
Tool measurement setup. Attach the correct drawing revision and dimensional requirements.
Frequently Asked Questions
What is a tapered corner radius end mill?
It is an end mill with a rounded corner at its cutting end and a tapered section along its profile. The corner radius, cutting diameter and neck dimensions should be selected together for the intended feature.
Is a tapered corner radius end mill the same as a tapered ball nose end mill?
No. A corner-radius end has a flat end with rounded corners, while a ball-nose end has a rounded end profile. Use the feature drawing and toolpath to determine which profile is needed.
How do I choose the correct NRMBT model?
Compare the catalog model’s cutting diameter, corner radius, flute length, taper angle, effective length, overall length and shank diameter with the required feature and holder. Include your workpiece and machine details when requesting a quotation.
What is the difference between effective length and overall length?
Effective length describes the reach identified in the tool drawing. Overall length is the end-to-end length of the tool. A long overall length alone does not show whether the neck will clear a recessed feature.
Will a tapered neck always clear a deep cavity?
No. A tapered neck occupies more space away from its tip. Compare the opening, wall profile, effective length and holder clearance with the complete tool drawing and planned toolpath before selecting the model.
What should a distributor include in an RFQ?
Send the model numbers and quantities, or the required dimensions and feature drawing, together with the workpiece material, operation and holder details. Add any requested marking, packaging and inspection requirements for discussion.
Request a Tapered Corner Radius End Mill Quote
Send the catalog models, quantities, workpiece material, operation, machine and holder requirements. Unconfirmed values will be reviewed rather than assumed.
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