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MFMHV-201-12-300-TC

2 Flute Short Reach Metric High Velocity Solid Carbide End Mill for Aluminum (3 pc min Order)

RobbJack high-velocity end mill — the flagship for long, chatter-free aluminum cutting, necked for reach, on both standard and the highest-performance machining centers made today. 12mm Dia 2-Flute Metric End Mill 19.03mm LOC, 12mm Shank, 76mm OAL, 3mm CR

OrderingMFMHV-201-12-300-TC·UncoatedChange finish

2 Flute Short Reach Metric High Velocity Solid Carbide End Mill for Aluminum (3 pc min Order) — MFMHV-201-12-300-TC
Series photo — representative of the MFMHV-201 family
OAL 76 mmFlute 19.03 mmReach 32 mmShank Ø12 mmCutter Ø12 mmR3 mmBlend 15°
Scaled drawing — true to this tool's dimensions (mm)
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Free CAD & DataSTEP 3DDXF 2DISO CSVCAM library
RobbJack FMHV Series 2-flute ultra-high-velocity aluminum end mill with necked reach and 37-degree helix

Ultra-high-velocity 2 and 3 flute aluminum end mills with reach and radii for high-horsepower spindles — the guide warns these tools 'can max out all machines made today.'

  • 2 flute (FMHV-201–205) and 3 flute (FMHV-301–305), 37° helix, with Feather Blend, necked reach, Mirror Edge, and thru-coolant holes
  • Built for ultra-high velocity: guide speeds & feeds are based on 175-horsepower / 130-kilowatt machines with short stickout — 'these tools can max out all machines made today. Adjust speeds and feeds to the machine and application… Be careful!'
  • Run at Max Tap Tested RPM (or Max RPM) with chip loads from .002–.004 (1/4") up to .008–.015 (1") per tooth, at depths from .100" up to .900" — slot or profile, but stay away from 50% radial step-over
  • Four reach lengths per diameter, short to extra-long (e.g. 1/4": 3/4", 1-1/16", 1-1/2"… on 2"–3" OALs); other reach lengths available upon request
  • Inch sizes 1/4"–1"; metric MFMHV line runs 6–25 mm with 2 and 3 cutting-edge versions in the same tables
  • Corner options: square end, radii of .03", .06", .09" (metric 0.5/1/2 mm), and ball end (-BN)
  • Every geometry in four builds: uncoated, DLC, thru-coolant (-TC), and thru-coolant DLC
  • The 3-flute FMHV features the guide's ALL-NEW balanced end design — marked 'CANNOT PLUNGE', so enter with helical interpolation or ramping
  • Applications: slotting, side milling, helical interpolation, ramping, high-performance 3-D (2-flute), roughing, semi-finishing, finishing — wet; materials: aluminum, copper, magnesium, brass
  • h4 shank tolerance, up to 150% more gripping force — tightest in the industry; tolerances: cutting dia −.001/−.0015, shank −.0001/−.0002, flute length +.060/−.000

From the RobbJack Applications Guide.

Mirror Edge: clean, even edge
Mirror Edge: clean, even edge — Magnified edge view showing the smooth, continuous cutting edge FMHV tools carry — RobbJack's edge preparation dampens vibration to help eliminate chatter at ultra-high velocity.
What a compromised edge looks like
What a compromised edge looks like — The comparison view: an edge with a visible chip/notch under the same magnification — the kind of edge damage that shows up as chatter, finish defects, and early tool death at high feed rates.

About this series

FMHV / MFMHV High-Velocity Aluminum End Mills

The flagship for long, chatter-free aluminum cutting.

High-velocity, necked-reach end mills engineered for aggressive aluminum machining — from standard machining centers to the highest-horsepower, highest-rpm spindles made today. Patented Mirror-edge geometry clears chips fast and runs clean at long reach.

  • Necked reach (short / medium / long / extra-long) clears the work and holds rigidity
  • Patented Mirror-edge geometry for a polished cut and fast chip evacuation
  • Square, corner-radius and ball-nose options; thru-coolant and DLC available
  • 2- and 3-flute, inch (FMHV) and metric (MFMHV)

Headline spec

Peak MRR up to 604 in³/min (1" 3-flute, thru-coolant + DLC)

Best for

  • High-speed aluminum roughing & finishing
  • Aerospace structures
  • Long-reach pockets

Specifications

US machining terms with ISO 13399 codes.

Cutting DiameterDC
12 mm
Shank DiameterDMM
12 mm
Length of Cut (LOC)APMX
19.03 mm
Reach (LBS)SDL
32 mm
Neck DiameterND
11.4 mm
Overall Length (OAL)OAL
76 mm
Corner RadiusRE
3 mm
Number of FlutesNOF
2
Helix AngleFHA
37°
Blend Angle (neck→shank)
15°
Feather Blend
10°
End Type
Corner Radius
Center Cutting
Yes — plunges
Thru-Coolant
Yes
Series
MFMHV-201 — 2 Flute Short Reach Metric High Velocity Solid Carbide End Mill for Aluminum (3 pc min Order)

Cuts these materials

AluminumCopper & BrassMagnesium

Applications

SlottingSide MillingAxial DepthHelical InterpolationRadial Step OverConventionalRampingHigh Performance3-DHigh-SpeedRoughingSemi-FinishingFinishingWet

Features

Feather BlendNeckedMirror Edge

Tolerances

TypeMinMax
Cutting Diameter-0.025-0.038
Length of Cut+1.5240
Overall Length+1.524-1.524
Shank Diameter-0.003-0.005

Choose the finish(2 options)

Compare →

Each finish is a different part number and price.

Not sure? Compare tool coatings — or leave it uncoated, the most common choice for aluminum.

Uncoated · your priceQuote

Part MFMHV-201-12-300-TC · price at the 3-piece minimum

Made & shipped in the USA · lead time confirmed at order. Test this tool in your spindle at retail, or get it through your RobbJack distributor.

Performance guaranteed. Run it against the tool you use today — if it doesn't beat it, we'll make it right.

Minimum order quantity: 3

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Download ISO 13399 data (.csv)

Proven in the field

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MFMHV-201-12-300-TC

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Starting speeds & feeds for the MFMHV-201-12-300-TC

Dial in for your machine →

RobbJack's tested starting numbers for this exact tool, from the same engine and the same default machine as the calculator: a 12,000 RPM / 400 IPM / 30 HP machining center, rigid setup, full-depth cut. A faster or smaller spindle changes the RPM and feed — enter yours in the calculator and it re-governs every number.

Starting speeds and feeds for RobbJack MFMHV-201-12-300-TC
MaterialOperationSFMRPMFeed (IPM)Chip load / toothDOC (in)WOC (in)
6061(T4-T6) AluminumRoughing — full slot1,48512,000127.2.00530.1890.4724
6061(T4-T6) AluminumFinishing1,48512,00062.4.00260.1890.0945

Read before you run

Recommendations are computed starting points based on typical conditions — not guarantees of performance, tool life, or fitness for your application. Machining involves inherent risk: you are solely responsible for safe operation, for verifying every parameter against your machine, spindle, toolholding, workholding, and guarding limits, and for proving all parameters on a test cut before production. RobbJack Corporation assumes no liability for tool breakage, machine damage, scrapped parts, production loss, or personal injury arising from use of these recommendations. By using this calculator you accept RobbJack's Terms & Conditions.

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