4 Flutes　HARDMAX
Size R 1～R 6
HFB
New Price
R1～R1.5
R2～R3
Patented in Japan,
China, Korea and Taiwan
R4～R6
Material Applications（☆ Highly Recommended　◎ Recommended　○ Suggested）
Work Material
Carbon
Alloy Prehardened
Hardened Steels
Cast Iron Aluminum Graphite Copper
Steels
Steels
Steels
Alloys
NAK
S45C SK / SCM
～ 55HRC ～ 60HRC ～ 70HRC
SUS
HPM
S55C
◎
◎
Plastics Glass Filled Titanium
Plastics
Alloys
Heat
Resistant
Alloys
Cemented Hard Brittle
Carbide （Non-Metallic）
Materials
◎
Features
The tool geometry offers outstanding chip evacuation performance.
The new tip design offers excellent cutting performance.
Offers excellent tool performance to cost ratio.
Diameter Tolerance: +0/-0.02
The shank taper angle shown is not an exact value and to avoid
contact with the work piece, we recommend the user controls the
precise value of this angle. Shank taper angle should not make
contact with the work piece.
Total 8 models
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□ New price
246
Unit（mm）
4 Flutes　HARDMAX
Milling Conditions for HFB/HFB-S
◆Roughing
Prehardened Steels
NAK80 (35~45HRC）
Coolant: Water Soluble/Air Blow/Oil Mist
Spindle
Speed
Feed Rate
Hardened Steels
STAVAX/SKD61 (45~55HRC）
Coolant: Air Blow/Oil Mist
Spindle
Speed
Feed Rate
CFB Series are Recommended
Hardened Steels
YXR33/SKD11 (55~60HRC）
Coolant: Air Blow/Oil Mist
Spindle
Speed
Feed Rate
Hardened Steels
HAP72 (65~70HRC）
Coolant: Air Blow/Oil Mist
Spindle
Speed
248
Feed Rate
Hardened Steels
HAP10/SKD11/YXR7 (60~65HRC）
Coolant: Air Blow/Oil Mist
Spindle
Speed
Feed Rate
4 Flutes
Milling Conditions for HFB/HFB-S
Ball half diameter R1 (䃥4 shank), R1.5
Spindle
Speed
Feed Rate
Ball half diameter R1 (䃥6 shank)
Spindle
Speed
Feed Rate
Ball half diameter R1.5 (Short shank)
Spindle
Speed
Feed Rate
Spindle
Speed
Feed Rate
Ball half diameter R2
HFB Series
SKD11(60HRC)
Milling Video
* Refer to next page for finishing condition.
249
4 Flutes　HARDMAX
Milling Conditions for HFB/HFB-S
◆Finishing (overhang length ~6D)
Prehardened Steels/Hardened Steels
(35~60HRC）
Coolant: Oil Mist
Spindle
Speed
ae ：Radial Depth（mm）＝ Pf
Feed Rate
Note:
・Decrease both spindle speed and feed rate proportionally when the milling parameters exceed the machine's maximum spindle speed.
・Decrease the feed rate more than 50% from the milling parameters when slot milling.
・Decrease both spindle speed and feed rate proportionally when the milling parameters exceed the machine's maximum spindle speed,
when burr and red-hot occur.
・Adjustments are recommended when finishing with an overhang in excess of 6xD.
・Recommend air blow or oil mist. For materials under 45HRC, recommend water soluble coolant.
Feature 1 Special Design Achieves Outstanding Chip Evacuation
helps
250
or
4 Flutes
Competitor A
Competitor B
HRC
Big
Small
Small
Feed Rate
Axial Depth
Radial Depth
Air Blow (Through Spindle)
Cycle Time
The large pocket design of the HFB promotes better chip evacuation and longer tool life when compared to a conventional design which shows
premature damage.
Feature 2 Surface Finish Performance
Feed Rate
Axial Depth
Radial Depth
251