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hrc55 flat end mill hrc55 flat end mill

hrc55 4 flute flat end mill

Why Partner with SAMHO China?

High Hardness and Wear Resistance for Efficient Machining
This HRC55 flat end mill is crafted from high-hardness material, offering excellent wear resistance and stable performance. Ideal for finishing medium-to-high hardness materials, it significantly improves processing efficiency.

Four-Flute Design for Smooth and Stable Cutting
The four-flute structure ensures stable cutting with minimal vibration. It delivers a superior surface finish and consistent precision, meeting the demanding requirements of high-precision machining.

High-Precision Shank for Reliable Clamping
Available in shank diameters from D1 to D20 with ample stock. High concentricity and stable clamping improve machining accuracy and extend tool life.

Flexible OEM/ODM Support
SAMHO provides full customization services to meet unique enterprise requirements. Tailored solutions support branding and specific machining needs.

Innovative R&D, Trusted by Industry
With decades of experience in cutting tool development, SAMHO leads in innovation. We provide reliable tooling solutions for mold & die, general machinery, automotive, and high-end manufacturing sectors.

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SAMHO HRC55 4 Flute Flat End Mill — High-Precision and Stable Machining Solution

High Hardness HRC55, Wear-Resistant and Efficient
This HRC55 flat milling cutter is made from premium solid carbide. It offers excellent wear resistance and stable performance. Ideal for efficient machining of medium to high hardness materials.

4-Flute Design for Efficient Finishing
The 4-flute design improves feed rates and ensures smooth cutting. It reduces vibration and delivers a high-quality surface finish, making it ideal for finishing applications.

High-Precision Shank for Stable Clamping
The shank tolerance is controlled within 0 to -0.003 mm. This ensures high concentricity and secure clamping. It improves machining accuracy and extends tool life.

Flat End Design for Versatile Machining
This HRC55 square end mill is suitable for machining flat surfaces, side walls, slots, and contours. It supports a wide range of finishing operations.

Wide Material Compatibility
Suitable for carbon steel, alloy steel, pre-hardened steel, and stainless steel. Widely used in mold making, precision components, and general machining industries.

HRC55 Square End Mill — Professional Usage Recommendations

Select Cutting Parameters Carefully
Adjust spindle speed and feed rate according to material hardness. Avoid excessive load to ensure stable cutting performance and extend tool life.

Use Primarily for Finishing Operations
HRC55 flat end mill bits are ideal for semi-finishing and finishing applications. They help achieve superior surface finish and high dimensional accuracy.

Ensure High-Precision Clamping
Use high-precision tool holders to maintain concentricity and minimize runout. This enhances machining stability and prolongs tool life.

Optimize Cooling and Chip Evacuation
Apply coolant or air during machining to prevent chip accumulation and overheating. This ensures smooth, uninterrupted cutting.

Minimize Tool Overhang
Keep tool projection as short as possible to maximize rigidity, reduce vibration, and maintain optimal machining accuracy and surface quality.

Recommended Materials for Machining (Highly Recommended: ⭐️ | Recommended: ⭕️ | Suggested: ◯)

Category Work Material Grade
DIE STEEL Carbon steels (S45C/S55C) ⭕️
Alloy steels (SK/SCM/SUS) ⭕️
Prehardened steels (NAK/HPM) ⭕️
Hardened steels (~55/~60/~70HRC) ◯
SPECIAL MATERIAL Aluminum alloys ◯
Graphite
Copper ⭕️
Plastics
Carbon fiber
Titanium alloys ◯
Heat resistant alloys
Cemented carbide
Hard brittle (non-metallic) material

end mill

 

Total 32 models

Model Number Outside Diameter Length Of Cut Shank Taper Angle Overall Length Number Of Flutes Shank Diameter In Stock
SHBS4-0100300 1 3 12° 50 4 4 ○
SHBS4-0150400 1.5 4 12° 50 4 4 ○
SHBS4-0200600 2 6 12° 50 4 4 ○
SHBS4-0250650 2.5 6.5 12° 50 4 4 ○
SHBS4-0300800-3 3 8 – 50 4 3 ○
SHBS4-0300800-4 3 8 12° 50 4 4 ○
SHBS4-0300800-6 3 8 12° 50 4 6 ○
SHBS4-0401000-4 4 10 – 50 4 4 ○
SHBS4-0401000-6 4 10 12° 50 4 6 ○
SHBS4-0401200-75 4 12 – 75 4 4 ○
SHBS4-0501300 5 13 12° 50 4 6 ○
SHBS4-0601500 6 15 – 50 4 6 ○
SHBS4-0601500-75 6 15 – 75 4 6 ○
SHBS4-0601500-100 6 15 – 100 4 6 ○
SHBS4-0802000 8 20 – 60 4 8 ○
SHBS4-0802000-75 8 20 – 75 4 8 ○
SHBS4-0802000-100 8 20 – 100 4 8 ○
SHBS4-0802000-150 8 20 – 150 4 8 ○
SHBS4-1002500 10 25 – 75 4 10 ○
SHBS4-1002500-100 10 25 – 100 4 10 ○
SHBS4-1002500-150 10 25 – 150 4 10 ○
SHBS4-1203000 12 30 – 75 4 12 ○
SHBS4-1203000-100 12 30 – 100 4 12 ○
SHBS4-1203000-150 12 30 – 150 4 12 ○
SHBS4-1403500-100 14 35 – 100 4 14 ○
SHBS4-1405500-150 14 55 – 150 4 14 ○
SHBS4-1604000-100 16 40 – 100 4 16 ○
SHBS4-1606000-150 16 60 – 150 4 16 ○
SHBS4-1804500-150 18 45 – 100 4 18 ○
SHBS4-1806500-150 18 65 – 150 4 18 ○
SHBS4-2005000-100 20 50 – 100 4 20 ○
SHBS4-2007000-150 20 70 – 150 4 20 ○

 

SHBS4 Side Milling

Work Material Oxygen-free CopperRed Copper HRC30-45 carbon steeland prehardened steel HRC45-55 hardened steel
(mm)Diameter (min-1)Speed (mm/min)Feed (min-1)Speed (mm/min)Feed (min-1)Speed (mm/min)Feed
D 1.0 10000 220 10000 100 8000 60
D 1.5 8000 240 8000 120 6000 60
D 2.0 8000 300 6000 150 4500 80
D 2.5 8000 300 5000 150 4000 80
D 3 7000 400 5000 150 4000 80
D 4 7000 500 4000 200 3000 150
D 5 7000 500 3500 300 3000 200
D 6 7000 500 3500 300 3000 200
D 8 6500 600 3000 300 2500 200
D 10 6000 600 2500 300 2500 200
D 12 6000 600 2000 250 2000 200
D 14 4000 600 2000 350 2000 300
D 16 4000 600 1800 350 1800 300
D 18 3000 400 1600 350 1600 300
D 20 3000 400 1200 350 1200 300

 

Milling Amount for Side Milling(mm)

Work Material 2.5D (Length of Cut = Diameter * 2.5) 4D (Length of Cut = Diameter * 4)
Below 45HRC ae = 0.07D
ap = 2D		 ae = 0.07D
ap = 2D
Above 45HRC ae = 0.03D
ap = 1.5D		 ae = 0.03D
ap = 1.5D
  • D：Diameter (mm)
  • ap：Axial Depth (mm)
  • ae：Radial Depth (mm)

Contour Milling Parameters

Work Material Oxygen-free CopperRed Copper HRC30-45 carbon steeland prehardened steel HRC45-55 hardened steel
(mm)Diameter (min-1)Speed (mm/min)Feed (min-1)Speed (mm/min)Feed (min-1)Speed (mm/min)Feed
D 1.0 13000 1000 13000 1000 13000 1000
D 1.5 13000 1200 13000 1200 13000 1200
D 2.0 12000 1500 12000 1500 12000 1500
D 2.5 12000 1500 12000 1500 12000 1500
D 3 11000 1800 11000 1800 11000 1800
D 4 10000 2200 10000 2200 10000 2200
D 5 9000 2500 9000 2500 9000 2500
D 6 9000 2500 9000 2500 9000 2500
D 8 8000 2500 8000 2500 8000 2500
D 10 7000 2500 7000 2500 7000 2500
D 12 6000 2500 6000 2500 6000 2500
D 14 4000 2200 4000 2200 4000 2200
D 16 3500 2200 3500 2200 3500 2200
D 18 3000 2000 3000 2000 3000 2000
D 20 2500 2000 2500 2000 2500 2000
Note:
*Decrease both spindle speed and feed rate proportionally when the milling parameters exceed the machine’s maximum spindle speed;
*Recommend oil coolant for Stainless Steels and Heat Resistance Alloys;
*Recommend using a non-contact measuring device to avoid damaging the precision tip point;
*Decrease both spindle speed and feed rate proportionally in case of chattering.
Download 1: hrc55 4 flute flat end mill File
Download 2: hrc55 4 flute flat end mill File

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