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ProductsHRC55 Solid Tungsten Carbide End Mill 4 Flute | CNC Milling Cutter for Hardened Steel
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HRC55 Solid Tungsten Carbide End Mill 4 Flute | CNC Milling Cutter for Hardened Steel

High-performance 4-flute tungsten carbide end mills (HRC55) for precise CNC steel machining. Available in diameters from 1mm to 20mm with standard and long reach options. Factory direct pricing, strict tolerance, and durable coating. Get a free sample today!

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Product Function

Our HRC55 4-Flute Solid Tungsten Carbide End Mills are engineered for high-performance CNC machining. They are specifically designed for:
  • Side Milling & Face Milling: Excellent stability for peripheral milling applications.
  • Slotting & Profiling: High rigidity design ensures vertical precision.
  • Target Materials: Optimized for machining Carbon Steel, Alloy Steel, Cast Iron, and Pre-hardened Steel (up to HRC55).
  • Applicable Machines: CNC Machining Centers, Engraving Machines, and High-speed CNC Lathes.

Product Features

  1. Premium Material: Made from Ultra-Fine Micro Grain Tungsten Carbide, offering high toughness and heat resistance.
  1. Advanced Coating: AlTiN / TiSiN coating reduces friction and heat generation, extending tool life by up to 40% in dry machining.
  1. High Precision:
  • Shank Tolerance: h6
  • Spiral Angle: 35° (Optimized for chip evacuation and surface finish).
  1. Rigid Design: 4-flute geometry provides greater core strength, reducing tool deflection and vibration during heavy cutting.
  1. Wide Range: Available in micro sizes (1mm) up to heavy-duty sizes (20mm), including standard, long, and extra-long lengths.

Specifications

We provide a comprehensive range of dimensions to fit your specific machining needs.
Column Key:
  • D1: Cutter Diameter (mm)
  • L2: Length of Cut / Flute Length (mm)
  • D2: Shank Diameter (mm)
  • L1: Over All Length (mm)

Standard Series (L1: 50mm - 75mm)

D1 (Cutter Dia)
L2 (Cut Length)
D2 (Shank Dia)
L1 (O.A.L)
1.0
1.0 / 2.0 / 3.0
4
50
1.5
2.0 / 3.0 / 4.0 / 4.5
4
50
2.0
2.0 / 3.0 / 4.0 / 6.0
4
50
2.5
3.0 / 4.0 / 5.0 / 7.5
4
50
3.0
3.0 / 4.0 / 6.0
4
50
3.0
9.0
3 / 4
50
4.0
4.0 / 6.0 / 8.0 / 10.0
4
50
5.0
12.5
5 / 6
50
6.0
6.0 / 8.0 / 10.0 / 12.0 / 15.0
6
50
7.0
21.0
8
50
8.0
8.0 / 10.0 / 12.0 / 14.0 / 20.0
8
60
9.0
27.0
10
75
10.0
10.0 - 20.0
10
60
10.0
25.0 / 30.0
10
75
11.0
33.0
12
75
12.0
12.0 - 20.0
12
60
12.0
30.0
12
75

Long Reach & Extra Long Series (L1: 75mm - 100mm)

D1 (Cutter Dia)
L2 (Cut Length)
D2 (Shank Dia)
L1 (O.A.L)
1.0 - 4.0
Various (3-20mm)
4
75
5.0
25.0
6
75
6.0
25.0
6
75
8.0
20.0
8
75
1.0 - 4.0
Various (3-30mm)
3 / 4
100
6.0
30.0
6
100
8.0
25.0 / 40.0
8
100
10.0
40.0
10
100
12.0
40.0
12
100
13.0 - 20.0
35.0 - 45.0
14/16/18/20
100
(Custom sizes are available upon request)

RPM/Feed Reference (Recommended Parameters)

Material: Carbon Steel / Alloy Steel (HRC < 45)
Cutter Diameter (mm)
RPM (min-1)
Feed Rate (mm/min)
Feed per Tooth (fz)
1.0 - 2.0
10,000 - 15,000
150 - 300
0.003 - 0.005
3.0 - 4.0
7,000 - 9,000
400 - 700
0.015 - 0.025
5.0 - 6.0
4,500 - 6,500
500 - 900
0.030 - 0.040
8.0
3,200 - 4,000
600 - 1,000
0.040 - 0.050
10.0
2,500 - 3,200
700 - 1,200
0.050 - 0.065
12.0
2,100 - 2,700
700 - 1,200
0.060 - 0.075
16.0+
1,500 - 2,000
600 - 1,000
0.070 - 0.090
Note: Reduce Speed (RPM) and Feed by 20-30% for harder materials (HRC45-55).

Promotion Policy

We value our partnership and offer the following incentives to support your business:
  1. Free Sample: Free samples can be provided to verify quality, if clients agree to cover the shipping cost.
  1. First Order Coupon: New clients can enjoy a **USD
    50discountcoupon∗∗fortheirfirstorder,providedthetotalorderamountexceedsUSD50 discount coupon** for their first order, provided the total order amount exceeds USD
    
    500.
  1. Big Order Discount: Clients can enjoy a 2% ~ 5% discount if the total order amount exceeds USD $5,000.

Client Benefits

Choosing our tungsten carbide tools gives you a competitive edge:
  • Factory Direct Cost: Eliminate middlemen. Get the best price-performance ratio directly from the manufacturer.
  • Consistent Quality: 100% inspection with advanced Zoller measuring equipment ensures every tool meets the specs.
  • Fast Global Shipping: With our extensive stock of standard sizes (as listed above), we can ship standard orders within 24-48 hours.
  • Technical Support: Our engineering team provides professional advice on cutting parameters and tool selection for your specific projects.

FAQ

Q1: What is the hardness rating for these end mills? A: These end mills are designed for materials up to HRC55. We also manufacture HRC60, and HRC65 series upon request.
Q2: Can you produce custom sizes? A: Yes, we offer OEM/ODM services. If you need a specific cutting length (L2) or shank diameter (D2) not listed in the standard table, please contact our sales team with your drawing or requirements.
Q3: What shipping methods do you use? A: We partner with DHL, FedEx, UPS, and TNT for fast delivery. For large bulk orders, air or sea freight is available to save costs.
Q4: How do I claim the Free Sample? A: Simply click the "Inquiry" button or email us. Let us know which size you need to test, and confirm your shipping address.