HM Series Usage Guidelines
General Guidelines
  • Speed and Feeds are only general starting points and may vary depending on specific applications
  • Use Climb Milling for better finish and longer tool life
  • Air or mist coolant on materials greater than 40 HRc
  • Good machines, tool holders, and programming methods all help in extending tool life
  • The best way to engage into the material is by helical interpolation or entering from off the part.
    		•
    Additional Notes
  • There is a 15° per side draft angle (blend angle) on all tools 3/16” (standard), 5mm (metric), and smaller to blend the cutting diameter to the larger shank diameter.
  • Special draft angles (blend angle) or necked shanks for part clearance are available upon request.
  • Special diameters, lengths, and corner radii are available on a make-to-order basis.
    		•

    HM Series Speeds and Feeds

    Tool Number

    Diameter
    DØ

    Steels 30-40 HRc

    RPM

    CLPT

    HM-402-04

    1/8"

    17000-20000

    0.0008-0.001

    HM-402-06

    3/16"

    12000-14000

    0.0011-0.0015

    HM-602-08

    1/4"

    9000-10400

    0.0015-0.002

    HM-602-10

    5/16"

    7200-8300

    0.0019-0.0025

    HM-602-12

    3/8"

    6000-6900

    0.0020-0.003

    HM-602-14

    7/16"

    5200-6000

    0.0023-0.0035

    HM-602-16

    1/2"

    4500-5200

    0.0025-0.004

    HM-602-20

    5/8"

    3600-4150

    0.0026-0.0042

    HM-802-24

    3/4"

    3000-3500

    0.0028-0.005

    HM-102-32

    1"

    2200-2600

    0.0030-0.006

    Use maximum RPM if suggested RPM is higher than the machines capabilities.

    Tool Number

    Diameter
    DØ

    Steels 40-50 HRc

    RPM

    CLPT

    HM-402-04

    1/8"

    13000-17000

    0.0007-0.0009

    HM-402-06

    3/16"

    9000-12000

    0.0010-0.0014

    HM-602-08

    1/4"

    7000-9000

    0.0014-0.0018

    HM-602-10

    5/16"

    5500-7200

    0.0017-0.0023

    HM-602-12

    3/8"

    4600-6000

    0.0018-0.0027

    HM-602-14

    7/16"

    4000-5200

    0.0021-0.0032

    HM-602-16

    1/2"

    3500-4500

    0.0023-0.0036

    HM-602-20

    5/8"

    2800-3600

    0.0023-0.0038

    HM-802-24

    3/4"

    2300-3000

    0.0025-0.0045

    HM-102-32

    1"

    1700-2200

    0.0027-0.0054

    Use maximum RPM if suggested RPM is higher than the machines capabilities.

    Tool Number

    Diameter
    DØ

    Steels 50-60 HRc

    RPM

    CLPT

    HM-402-04

    1/8"

    8000-13000

    0.0006-0.0008

    HM-402-06

    3/16"

    5300-9000

    0.0009-0.0012

    HM-602-08

    1/4"

    4000-6600

    0.0012-0.0016

    HM-602-10

    5/16"

    3200-5400

    0.0015-0.0020

    HM-602-12

    3/8"

    2700-4500

    0.0016-0.0024

    HM-602-14

    7/16"

    2300-3900

    0.0019-0.0028

    HM-602-16

    1/2"

    2100-3500

    0.0020-0.0032

    HM-602-20

    5/8"

    1600-2750

    0.0021-0.0034

    HM-802-24

    3/4"

    1350-2250

    0.0023-0.0041

    HM-102-32

    1"

    1000-1700

    0.0024-0.0049

    Use maximum RPM if suggested RPM is higher than the machines capabilities.

    Profiling

    30-40HRc
    Profiling Radial Width =
    5% of Diameter
    40-50HRc
    Profiling Radial Width =
    5% of Diameter
    50-60HRc
    Profiling Radial Width =
    2% of Diameter

    1 x Diameter
    (Axial Depth)

    Facing/Floor Finishing

    25% of Diameter
    (Radial Depth)

    2% of Diameter
    (Axial Depth)

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