Long Reach End Mills

Compare NEMA, NEMB, DEMA, DEMB, EEMA and EEMB long reach end mills. Select cutting diameter, flute length and effective reach as separate dimensions for recessed features, then request a quotation by complete model and quantity.

  • Effective reach listed separately from flute length
  • Two- and four-flute families kept in separate tables
  • Square-end geometry for the specified milled feature
  • Series and full model references retained for reorders

Match Reach Without Confusing It with Cutting Length

A recessed milling feature requires clearance for the tool body as well as enough cutting length. Compare effective reach L1 with flute length Lc and overall length L; these dimensions describe different parts of the tool.

  • Identify flute length Lc and effective length L1 separately
  • Check neck and shoulder clearance against the pocket section
  • Include holder projection in the access review
  • Retain the full model code for each reach variant
Request a Model-by-Model Quote

Long Reach End Mills — Product Views

Compare the full-tool, working-tip and shank views with the selected series and model. Keep different products separately identifiable when reviewing the available angles.

NEMB Product Views

Full-tool group view
Working-section detail
Full-tool profile view
Full-tool view in display holder

NEMB Product Views

Full-tool group view
Working-section detail
Full-tool profile view
Full-tool view in display holder

DEMB Product Views

Full-tool group view
Working-section detail
Full-tool profile view
Angled full-tool view

DEMA Product Views

Full-tool group view
Working-section detail
Full-tool profile view
Angled full-tool view
Single-tool view

EEMA / EEMB Product Views

Full-tool group view
Working-section detail
Full-tool profile view
Angled full-tool view

NEMA — 2 flutes

Catalogue tool profile — 2 flutes

Compare the Listed Series and Configurations

Long reach, long shank and long flute are different selection terms. This page covers the listed square-end reach families; a request for a longer holding section or a longer cutting edge needs its own dimensional review.

SeriesFlutesModel records
NEMA2 FLUTES32
NEMB4 FLUTES30
DEMA2 FLUTES30
DEMB4 FLUTES41
EEMA2 FLUTES24
EEMB4 FLUTES33

Long Reach End Mills Specifications

Review cutting diameter D, flute length Lc, effective length L1, shank diameter d and overall length L. Use the individual model record and corresponding dimension drawing.

NEMA — 2 flutes

ModelCutting Diameter D (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
NEMA0201AD0.20.21L5042
NEMA0202AD0.20.22L5042
NEMA0203AD0.20.23L5042
NEMA0301AD0.30.31L5042
NEMA0302AD0.30.32L5042
NEMA0303AD0.30.33L5042
NEMA0304AD0.30.34L5042
NEMA0305AD0.30.35L5042
NEMA0401AD0.40.41L5042
NEMA0402AD0.40.42L5042
NEMA0403AD0.40.43L5042
NEMA0404AD0.40.44L5042
NEMA0406AD0.40.46L5042
NEMA0501AD0.50.51L5042
NEMA0502AD0.50.52L5042
NEMA0503AD0.50.53L5042
NEMA0504AD0.50.54L5042
NEMA0505AD0.50.55L5042
NEMA0506AD0.50.56L5042
NEMA0601AD0.60.61L5042
NEMA0602AD0.60.62L5042
NEMA0603AD0.60.63L5042
NEMA0604AD0.60.64L5042
NEMA0606AD0.60.66L5042
NEMA0608AD0.60.68L5042
NEMA0801AD0.80.81L5042
NEMA0802AD0.80.82L5042
NEMA0803AD0.80.83L5042
NEMA0804AD0.80.84L5042
NEMA0806AD0.80.86L5042
NEMA0808AD0.80.88L5042
NEMA0810AD0.80.810L5042

NEMB — 4 flutes

ModelCutting Diameter D (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
NEMB1004AD114L5044
NEMB1006AD116L5044
NEMB1008AD118L5044
NEMB1010AD1110L5044
NEMB1012AD1112L5044
NEMB1506AD1.51.56L5044
NEMB1508AD1.51.58L5044
NEMB1510AD1.51.510L5044
NEMB1512AD1.51.512L5044
NEMB1516AD1.51.516L5044
NEMB2008AD228L5044
NEMB2010AD2210L5044
NEMB2012AD2212L5044
NEMB2016AD2216L5044
NEMB2018AD2218L5044
NEMB3010AD3310L5044
NEMB3012AD3312L5044
NEMB3016AD3316L5044
NEMB3020D3320L6064
NEMB3020LD3320L7564
NEMB3026D3326L6064
NEMB3026LD3326L7564
NEMB4012D4412L6064
NEMB4012LD4412L7564
NEMB4016D4416L6064
NEMB4016LD4416L7564
NEMB4020D4420L6064
NEMB4020LD4420L7564
NEMB4026D4426L6064
NEMB4026LD4426L7564

DEMA — 2 flutes

ModelCutting Diameter D (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
DEMA0201AD0.20.21L5042
DEMA0202AD0.20.22L5042
DEMA0203AD0.20.23L5042
DEMA0301AD0.30.31L5042
DEMA0302AD0.30.32L5042
DEMA0303AD0.30.33L5042
DEMA0304AD0.30.34L5042
DEMA0402AD0.40.42L5042
DEMA0403AD0.40.43L5042
DEMA0404AD0.40.44L5042
DEMA0406AD0.40.46L5042
DEMA0502AD0.50.52L5042
DEMA0503AD0.50.53L5042
DEMA0504AD0.50.54L5042
DEMA0505AD0.50.55L5042
DEMA0506AD0.50.56L5042
DEMA0602AD0.60.62L5042
DEMA0603AD0.60.63L5042
DEMA0604AD0.60.64L5042
DEMA0606AD0.60.66L5042
DEMA0608AD0.60.68L5042
DEMA0702AD0.70.72L5042
DEMA0704AD0.70.74L5042
DEMA0706AD0.70.76L5042
DEMA0802AD0.80.82L5042
DEMA0803AD0.80.83L5042
DEMA0804AD0.80.84L5042
DEMA0806AD0.80.86L5042
DEMA0808AD0.80.88L5042
DEMA0810AD0.80.810L5042

DEMB — 4 flutes

ModelCutting Diameter D (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
DEMB1004AD114L5044
DEMB1006AD116L5044
DEMB1008AD118L5044
DEMB1010AD1110L5044
DEMB1012AD1112L5044
DEMB1016AD1116L5044
DEMB1020AD1120L5044
DEMB1506AD1.51.56L5044
DEMB1508AD1.51.58L5044
DEMB1510AD1.51.510L5044
DEMB1512AD1.51.512L5044
DEMB1514AD1.51.514L5044
DEMB1516AD1.51.516L5044
DEMB1518AD1.51.518L5044
DEMB1520AD1.51.520L5044
DEMB2008AD228L5044
DEMB2010AD2210L5044
DEMB2012AD2212L5044
DEMB2014AD2214L5044
DEMB2016AD2216L5044
DEMB2018AD2218L5044
DEMB2020AD2220L5044
DEMB2510AD2.52.510L5044
DEMB2512AD2.52.512L5044
DEMB2516AD2.52.516L5044
DEMB3010AD3310L5044
DEMB3012AD3312L5044
DEMB3016AD3316L5044
DEMB3020D3320L6064
DEMB3020LD3320L7564
DEMB3026D3326L6064
DEMB3026LD3326L7564
DEMB3030D3330L6064
DEMB3030LD3330L7564
DEMB4016D4416L6064
DEMB4020D4420L6064
DEMB4020LD4420L7564
DEMB4026D4426L6064
DEMB4026LD4426L7564
DEMB4030D4430L6064
DEMB4030LD4430L7564

EEMA — 2 flutes

ModelCutting Diameter D (mm)Corner Radius R (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
EEMA01005AD0.1—0.20.5L5042
EEMA0101AD0.1—0.21L5042
EEMA0201AD0.2—0.41L5042
EEMA02015AD0.2—0.41.5L5042
EEMA0202AD0.2—0.42L5042
EEMA03015AD0.3—0.61.5L5042
EEMA0302AD0.3—0.62L5042
EEMA0303AD0.3—0.63L5042
EEMA0402AD0.4—0.82L5042
EEMA0403AD0.4—0.83L5042
EEMA0404AD0.4—0.84L5042
EEMA0502AD0.5—12L5042
EEMA0503AD0.5—13L5042
EEMA0504AD0.5—14L5042
EEMA0506AD0.5—16L5042
EEMA0602AD0.6—1.22L5042
EEMA0603AD0.6—1.23L5042
EEMA0604AD0.6—1.24L5042
EEMA0606AD0.6—1.26L5042
EEMA0803AD0.8—1.63L5042
EEMA0804AD0.8—1.64L5042
EEMA0806AD0.8—1.66L5042
EEMA0808AD0.8—1.68L5042
EEMA0810AD0.8—1.610L5042

EEMB — 4 flutes

ModelCutting Diameter D (mm)Corner Radius R (mm)Flute Length Lc (mm)Effective Length L1 (mm)Overall Length L (mm)Shank Diameter d (mm)Flutes
EEMB1004AD1.0—24L5044
EEMB1006AD1.0—26L5044
EEMB1008AD1.0—28L5044
EEMB1010AD1.0—210L5044
EEMB1012AD1.0—212L5044
EEMB1016AD1.0—216L5044
EEMB1506AD1.5—36L5044
EEMB1508AD1.5—38L5044
EEMB1510AD1.5—310L5044
EEMB1512AD1.5—312L5044
EEMB1516AD1.5—316L5044
EEMB1520AD1.5—320L5044
EEMB2008AD2.0—48L5044
EEMB2010AD2.0—410L5044
EEMB2012AD2.0—412L5044
EEMB2014AD2.0—414L5044
EEMB2016AD2.0—416L5044
EEMB2020AD2.0—420L5044
EEMB2508AD2.5—58L5044
EEMB2510AD2.5—510L5044
EEMB2512AD2.5—512L5044
EEMB2514AD2.5—514L5044
EEMB2516AD2.5—516L5044
EEMB2520D2.5—520L6064
EEMB3010AD3.0—610L5044
EEMB3012AD3.0—612L5044
EEMB3016AD3.0—616L5044
EEMB3020D3.0—620L6064
EEMB3026D3.0—626L6064
EEMB4016AD4.0—816L5044
EEMB4020D4.0—820L6064
EEMB4026D4.0—826L6064
EEMB4030LD4.0—830L7564

Match the Tool to the Feature and Machine Setup

Working Profile

Start with the feature depth and the clearance needed behind the cutting section. Select the model with a suitable effective reach and a flute length appropriate to the actual engagement.

Access and Holding Conditions

Send the cavity section and holder projection. A longer neck or effective length is not additional cutting edge, and a long overall length does not establish interference-free access.

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.

Reach Is Not Flute Length

Keep Lc and L1 separately identified in the enquiry. The relieved section provides clearance behind the cutting portion; select the actual engagement and the clearance envelope against the pocket section.

Prepare the Range for Your Machining Customers

Build the enquiry around the required feature and the model dimensions, whether you are replacing a production tool or planning a distributor assortment.

Feature-Led Selection

Start with the feature depth and the clearance needed behind the cutting section. Select the model with a suitable effective reach and a flute length appropriate to the actual engagement.

Replacement Review

Long reach, long shank and long flute are different selection terms. This page covers the listed square-end reach families; a request for a longer holding section or a longer cutting edge needs its own dimensional review.

Assortments and Reorders

List quantities by full model and keep different flute counts and length variants separately identifiable. Attach the approved drawing or item specification to repeat enquiries rather than relying on a shared product title.

Production Equipment for Long Reach End Mills

Review the equipment alongside the cutting diameter D, flute length Lc, effective length L1, shank diameter d and overall length L 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 NEMA models such as NEMA0201A (2 flutes), review end profile, cutting diameter and flute length. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

CNC Grinding Equipment

A row of enclosed CNC grinding machines.

A multi-model order is easier to review when each cutting diameter remains linked to its own drawing and quantity. The NEMA catalogue list starts with NEMA0201A and contains 32 model records with D entries from 0.2 to 0.8; use the source drawing to confirm units and applicable limits.

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 NEMA0201A and other NEMA models attached to the order's end profile, cutting diameter and flute length requirements. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

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 NEMA range, use NEMA0201A as a model reference when checking end profile, cutting diameter and flute length against the part requirement.

Automated Grinding Equipment

Tool-grinding machines with enclosed robotic handling equipment.

When several geometries appear in one enquiry, separate the item records so the selected cutting profile remains identifiable throughout the order discussion. The NEMA catalogue list starts with NEMA0201A and contains 32 model records with D entries from 0.2 to 0.8; use the source drawing to confirm units and applicable limits.

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 NEMA0201A or another NEMA model against the flat-bottomed feature or side-milling task.

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 NEMA0201A and other NEMA models attached to the order's end profile, cutting diameter and flute length requirements. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

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 NEMA range, use NEMA0201A as a model reference when checking end profile, 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 NEMA models such as NEMA0201A (2 flutes), review end profile, 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 NEMA0201A or another NEMA model against the flat-bottomed feature or side-milling task. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

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 NEMA0201A and other NEMA models attached to the order's end profile, 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 NEMA range, use NEMA0201A as a model reference when checking end profile, cutting diameter and flute length against the part requirement. Preserve the specified end profile, cutting diameter and flute length when discussing any optional treatment for NEMA.

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 NEMA models such as NEMA0201A (2 flutes), review end profile, 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 NEMA0201A or another NEMA model against the flat-bottomed feature or side-milling task.

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 NEMA0201A and other NEMA models attached to the order's end profile, cutting diameter and flute length requirements. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

Inspection Equipment and Acceptance Requirements

Build the inspection request around cutting diameter D, flute length Lc, effective length L1, shank diameter d and overall length L. 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.

A useful acceptance plan identifies the tool features to measure, the required limits and the applicable drawing revision. The inspection-area view does not establish a particular test result. The NEMA catalogue list starts with NEMA0201A and contains 32 model records with D entries from 0.2 to 0.8; use the source drawing to confirm units and applicable limits.

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 NEMA models such as NEMA0201A (2 flutes), review end profile, cutting diameter and flute length. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

Measurement Workstations

Optical measuring workstations in the inspection area.

Keep cutting dimensions, holding dimensions and length definitions separate in the inspection request. A measurement image is supporting context, not a substitute for an item-linked result. The NEMA catalogue list starts with NEMA0201A and contains 32 model records with D entries from 0.2 to 0.8; use the source drawing to confirm units and applicable limits.

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 NEMA0201A and other NEMA models attached to the order's end profile, cutting diameter and flute length requirements. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

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 NEMA range, use NEMA0201A as a model reference when checking end profile, 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 NEMA models such as NEMA0201A (2 flutes), review end profile, cutting diameter and flute length. Keep effective reach and neck clearance separate from cutting length when checking access into the feature.

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 NEMA0201A or another NEMA model against the flat-bottomed feature or side-milling task.

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 NEMA0201A and other NEMA models attached to the order's end profile, cutting diameter and flute length requirements. For NEMA, 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.

Include the selected model and quantity on each line of the enquiry. Where the same family appears with different flute counts or lengths, retain the complete code and drawing reference.

Request price, packing, order quantity and lead time for the actual model mix. State any marking, individual tool protection and documentation requirements with the enquiry.

Long Reach End Mills Purchasing FAQ

Which dimension describes long reach: Lc, L1 or L?

In these catalogue records, Lc identifies flute length, L1 identifies effective length and L identifies overall length. Review the corresponding drawing to locate the endpoints. Effective length helps assess access; it does not make the entire relieved section a cutting edge.

Why would a deep pocket need a short cutting section with a longer reach?

Pocket access and cutting engagement are different requirements. A tool may need clearance behind the cutting section while only a shorter edge engages the feature. Compare the pocket section with both Lc and L1 instead of replacing the selection with a general request for a longer tool.

Can a long flute end mill replace the listed long reach cutter?

Not without a geometry review. A longer flute changes the cutting section; a relieved reach changes access behind it. Check flute length, effective reach and clearance against the part section before approving the alternative. Overall length alone is not an interchangeability criterion.

How should I compare the two-flute and four-flute reach families?

Compare the model dimensions first, then the workpiece, engagement and chip-removal conditions. NEMA, DEMA and EEMA records are separated from the listed four-flute families. Do not infer a feed-rate increase or equivalent cutting conditions from flute count alone.

What drawing information is needed to assess neck or holder interference?

Provide a section through the pocket or rib, including feature depth, wall position, corner requirements and fixture restrictions. Add the holder and tool projection. The review should cover the neck, shoulder and holder, not just whether the cutting diameter enters the opening.

How can I avoid ordering the wrong reach variant on a repeat purchase?

Retain the complete model code and approved drawing, including D, Lc and L1. State quantity by variant and include the existing setup or application reference. Similar series prefixes or the same diameter do not establish the same effective reach.

Request a Quote for Long Reach End Mills

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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