KRB Series · R079
Corner Radius End Mills for Titanium
Choose a corner radius end mill for titanium by the diameter, outer corner radius and tool length your customer needs. The KRB series combines a nominally flat cutting end with rounded corners and four flutes, with dimensions listed by model.
- Flat-end profile with radiused cutting corners
- Four-flute KRB series with model-level options
- Compare cutter diameter, corner radius and shank size before ordering
Specify the Corner Radius, Not Just the Diameter
Two corner radius cutters can share a cutting diameter and still produce different transitions. Use the part drawing and toolpath to select the radius, then check cutting length and holder clearance for the feature.
- Match the cutter's corner radius to the part requirement
- Compare flute length with the planned machining engagement
- Identify the model and shank size on every order line
KRB Series and Available Model Dimensions
The catalog lists 27 KRB models. Each model row provides cutting diameter, corner radius, flute length, overall length, shank diameter and flute count. Use the series drawing and the relevant row together when assembling a quotation.
For a distributor assortment, list diameter and corner radius as separate fields. Two cutters with the same diameter can have different corner radii; an order that omits R may identify the wrong profile. A customer asking for a replacement needs the correct corner geometry as well as a compatible holder; diameter alone does not identify the full tool.
Check the Feature and Holder
Corner radius: Compare the specified cutter corner with the transition required on the part drawing. The programmed path and machining allowance also affect the finished shape.
Cutting diameter: Check the cutter against the pocket, slot or shoulder geometry. Ensure the tool can enter the feature and follow the intended path without interference.
Flute length: Compare the fluted section with the planned axial engagement. It is a tool dimension, not a stand-alone guarantee that a deep cavity can be reached.
Shank and overall length: Match the shank to the holder, then check assembled projection and available machine clearance. Include fixture details when space around the workpiece is restricted.
Ordering for Titanium Machining
Identify the titanium grade and material condition, the machining operation and the target feature. Shoulder milling, an open pocket and a recessed feature can place different demands on access, engagement and chip evacuation. Include the machine, holder and coolant arrangement when requesting a model review.
The radius marked on the cutter is a tool dimension; it does not by itself guarantee the finished part radius or tolerance. If the transition matters to the component, provide the drawing, tolerances and programmed operation for review. Record the selected tool model and the customer’s approved drawing revision for replacement and repeat orders.
Compare Related Cutting Profiles
A corner radius end mill has a nominally flat end with rounded outer corners. A ball nose cutter has a rounded end profile across the cutting tip, while a square-end cutter has a nominally square corner. These are different geometries; compare the part requirement and toolpath before substituting one for another.
Quotation and Sample Preparation
Send the KRB model codes and quantities, or provide the cutting diameter, radius, flute length, overall length and shank diameter. Include any requirements for sample review, dimensional checks, marking or packaging in the inquiry so they can be discussed for the selected order.
For another titanium feature profile, compare the square end mill for titanium and ball nose end mill for titanium.
Catalog Series, Product Views and Dimension Drawings
Catalog Model Specifications
Check the KRB cutter diameter and corner radius together with the remaining dimensions shown for each model.
KRB · R079 · 4 FLUTES
| Type No. | Diameter (D, mm) | Corner R (R, mm) | Flute length (Lc, mm) | Overall length (L, mm) | Shank Dia (d, mm) | Flutes (F) |
|---|---|---|---|---|---|---|
| KRB0305A | D3 | R0.5 | 8 | L50 | 4 | 4 |
| KRB0305 | D3 | R0.5 | 8 | L50 | 6 | 4 |
| KRB0405A | D4 | R0.5 | 10 | L50 | 4 | 4 |
| KRB0405 | D4 | R0.5 | 10 | L50 | 6 | 4 |
| KRB0505 | D5 | R0.5 | 13 | L50 | 6 | 4 |
| KRB0510 | D5 | R1 | 13 | L50 | 6 | 4 |
| KRB0605 | D6 | R0.5 | 16 | L50 | 6 | 4 |
| KRB0610 | D6 | R1 | 16 | L50 | 6 | 4 |
| KRB0805 | D8 | R0.5 | 20 | L60 | 8 | 4 |
| KRB0810 | D8 | R1 | 20 | L60 | 8 | 4 |
| KRB1005 | D10 | R0.5 | 25 | L75 | 10 | 4 |
| KRB1010 | D10 | R1 | 25 | L75 | 10 | 4 |
| KRB1020 | D10 | R2 | 25 | L75 | 10 | 4 |
| KRB1030 | D10 | R3 | 25 | L75 | 10 | 4 |
| KRB1210 | D12 | R1 | 30 | L75 | 12 | 4 |
| KRB1220 | D12 | R2 | 30 | L75 | 12 | 4 |
| KRB1230 | D12 | R3 | 30 | L75 | 12 | 4 |
| KRB1610 | D16 | R1 | 40 | L100 | 16 | 4 |
| KRB1620 | D16 | R2 | 40 | L100 | 16 | 4 |
| KRB1630 | D16 | R3 | 40 | L100 | 16 | 4 |
| KRB1640 | D16 | R4 | 40 | L100 | 16 | 4 |
| KRB1650 | D16 | R5 | 40 | L100 | 16 | 4 |
| KRB2010 | D20 | R1 | 45 | L100 | 20 | 4 |
| KRB2020 | D20 | R2 | 45 | L100 | 20 | 4 |
| KRB2030 | D20 | R3 | 45 | L100 | 20 | 4 |
| KRB2040 | D20 | R4 | 45 | L100 | 20 | 4 |
| KRB2050 | D20 | R5 | 45 | L100 | 20 | 4 |
Production Equipment Reference
The photographs below show production equipment and workshop operations used as manufacturing-reference material for carbide tooling enquiries. Process requirements are confirmed for the selected model and order.
Enclosed CNC tool-grinding equipment shown on the workshop floor.
Multi-tank cleaning equipment shown in the workshop.
A row of enclosed CNC grinding machines viewed from the workshop aisle.
Enclosed tool-grinding equipment with an adjacent operator area.
Tool-grinding equipment with a robotic handling enclosure.
Enclosed grinding and robotic-handling equipment shown from another workshop position.
CNC grinding machines arranged along a workshop aisle.
Enclosed tool-coating equipment shown in the production area.
Vacuum-chamber equipment shown in the coating area.
An operator works at an enclosed laser-marking station.
Machine workstations shown in a tool-finishing area.
An operator stands beside tool honing and polishing equipment.
An operator stands beside enclosed edge-honing and polishing equipment.
Enclosed wet-blasting equipment shown in the surface-finishing area.
A second workshop view of enclosed wet-blasting equipment.
Inspection and Measurement Equipment Reference
The photographs below show inspection and measurement equipment used when discussing drawing dimensions and order requirements. The inspection scope is confirmed for the selected order.
Operators work at optical inspection stations.
An operator positions a cutting tool at a profile-measuring station.
Optical measurement workstations shown in the inspection area.
A balancing instrument with a protective enclosure.
A tool presetting station with an optical measuring arm and display.
An optical tool presetter with a measurement display.
Operators inspect tools at camera-based optical workstations.
An operator positions a tool in an enclosed measuring machine.
Frequently Asked Questions
What is a corner radius end mill for titanium used for?
It is an option for features where a radiused transition at the cutter corner suits the planned toolpath. Select the model using the part drawing, material and machine setup.
Does the KRB tool radius guarantee the final corner radius in titanium?
No. The KRB corner radius describes the cutter geometry. Compare it with the component drawing and programmed toolpath; the finished feature also depends on the machining setup and process.
Why should I specify both diameter and corner radius?
Cutters with the same diameter may have different corner radii. Diameter and R together identify the geometry to compare with the part drawing and program.
How many flutes are listed for KRB models?
The catalog identifies the KRB series as four-flute. Check the individual row for its diameter, radius and lengths.
How should a KRB tool be checked against a titanium cavity?
Compare the cutter diameter and corner radius with the part drawing, then review flute length, holder projection and side clearance. Flute length alone does not establish the maximum accessible depth.
What should an importer include in an RFQ?
Provide the KRB model and quantity per size, titanium grade, part drawing and holder requirements. Include any required sample, identification and packing details.
Request a Quote for Corner Radius End Mills for Titanium
Request KRB models by cutting diameter, corner radius and quantity. Include the titanium grade, part dimensions and holder details to help us match the tool to your application.