The Durable Mills ball nose end mill is engineered for precision 3D profiling and contouring on hardened steel up to HRC60. Designed for heavy-duty CNC machining, this premium ball nose milling cutter features a 12% cobalt micro-grain carbide matrix with a negative rake angle, preventing chipping during aggressive milling cycles. Upgrade your toolroom efficiency with our high-hardness carbide ball end mills for superior surface finish and extended tool life.
Manufactured by Durable Mills, our HRC60 solid carbide ball nose end mill series is precision-engineered for industrial mold making, die sinking, and complex 3D profiling operations. Utilizing an ultra-fine 0.4 μm micro-grain cemented carbide substrate with 12% cobalt formulation, this 2 flute ball nose milling cutter delivers exceptional toughness (HRA 92.5–93) and extreme thermal resistance when machining pre-hardened and hardened steels up to 60 HRC.
| ISO Category & Workpiece Material | Depth of Cut (ap) | Width of Cut (ae) | Cutting Speed (Vc m/min) | Feed Per Tooth (fz mm/z) |
|---|---|---|---|---|
| [P] Carbon Steel / Alloy Steel (<35 HRC) | ap ≤ 0.2D | ae ≤ 0.2D | 120 | 0.004D |
| [P] Alloy Steel (35–48 HRC) | ap ≤ 0.1D | ae ≤ 0.1D | 80 | 0.001D |
| [M] Stainless Steel | ap ≤ 0.2D | ae ≤ 0.2D | 80 | 0.004D |
| [K] Gray Cast Iron / Ductile Iron (<32 HRC) | ap ≤ 0.2D | ae ≤ 0.2D | 120 | 0.004D |
| [N] Aluminum Alloy, Copper Alloy | Applicable with customized non-ferrous parameters | |||
| [H] Hardened Die & Mold Steel (45–65 HRC) | Adjust cutting speed and down-feed according to workpiece hardness | |||
| Model Item | Radius R (mm) | Flute Length Lc (mm) | Shank Dia d (mm) | Overall Length L (mm) | Flutes |
|---|---|---|---|---|---|
| DM-R1.5*6*3*50*2T | 1.5 | 6 | 3 | 50 | 2 |
| DM-R1.5*6*3*75*2T | 1.5 | 6 | 3 | 75 | 2 |
| DM-R1.5*6*3*100*2T | 1.5 | 6 | 3 | 100 | 2 |
| DM-R0.5*2*4*50*2T | 0.5 | 2 | 4 | 50 | 2 |
| DM-R0.75*3*4*50*2T | 0.75 | 3 | 4 | 50 | 2 |
| DM-R1*4*4*50*2T | 1 | 4 | 4 | 50 | 2 |
| DM-R1.25*5*4*50*2T | 1.25 | 5 | 4 | 50 | 2 |
| DM-R1.5*6*4*50*2T | 1.5 | 6 | 4 | 50 | 2 |
| DM-R1.75*7*4*50*2T | 1.75 | 7 | 4 | 50 | 2 |
| DM-R2*8*4*50*2T | 2 | 8 | 4 | 50 | 2 |
| DM-R2*8*4*75*2T | 2 | 8 | 4 | 75 | 2 |
| DM-R2*8*4*100*2T | 2 | 8 | 4 | 100 | 2 |
| DM-R2.5*10*5*50*2T | 2.5 | 10 | 5 | 50 | 2 |
| DM-R2.5*10*5*75*2T | 2.5 | 10 | 5 | 75 | 2 |
| DM-R2.5*10*5*100*2T | 2.5 | 10 | 5 | 100 | 2 |
| DM-R0.5*2*6*50*2T | 0.5 | 2 | 6 | 50 | 2 |
| DM-R0.75*3*6*50*2T | 0.75 | 3 | 6 | 50 | 2 |
| DM-R1*4*6*50*2T | 1 | 4 | 6 | 50 | 2 |
| DM-R1.25*5*6*50*2T | 1.25 | 5 | 6 | 50 | 2 |
| DM-R1.5*6*6*50*2T | 1.5 | 6 | 6 | 50 | 2 |
| DM-R1.75*7*6*50*2T | 1.75 | 7 | 6 | 50 | 2 |
| DM-R2*8*6*50*2T | 2 | 8 | 6 | 50 | 2 |
| DM-R2.5*10*6*50*2T | 2.5 | 10 | 6 | 50 | 2 |
| DM-R3*12*6*50*4T | 3 | 12 | 6 | 50 | 2 |
| DM-R3*12*6*75*4T | 3 | 12 | 6 | 75 | 2 |
| DM-R3*12*6*100*4T | 3 | 12 | 6 | 100 | 2 |
| DM-R3*12*6*150*4T | 3 | 12 | 6 | 150 | 2 |
| DM-R3.5*14*8*60*4T | 3.5 | 14 | 8 | 60 | 2 |
| DM-R4*16*8*60*4T | 4 | 16 | 8 | 60 | 2 |
| DM-R4*16*8*75*4T | 4 | 16 | 8 | 75 | 2 |
| DM-R4*16*8*100*4T | 4 | 16 | 8 | 100 | 2 |
| DM-R4*16*8*150*4T | 4 | 16 | 8 | 150 | 2 |
| DM-R4.5*18*10*75*4T | 4.5 | 18 | 10 | 75 | 2 |
| DM-R5*20*10*75*4T | 5 | 20 | 10 | 75 | 2 |
| DM-R5*20*10*100*4T | 5 | 20 | 10 | 100 | 2 |
| DM-R5*20*10*150*4T | 5 | 20 | 10 | 150 | 2 |
Looking for customized shank lengths, batch packaging, or high-volume wholesale pricing for your CNC machining operations? Please contact our technical sales team directly at info@durablemills.com or visit our Contact Page.
Q1: What materials are best suited for this HRC60 ball nose end mill?
This end mill is engineered for carbon steels, alloy steels (35-48 HRC), stainless steels, cast iron, and hardened die steels up to 60 HRC. The micro-grain carbide structure provides stability in both rough semi-finishing and high-speed finishing.
Q2: Why use a negative rake angle on a ball nose cutter?
A negative front rake significantly strengthens the cutting edge profile, absorbing impact during high-feed milling and effectively preventing micro-chipping in abrasive materials.
Q3: Do you support custom shank lengths (OAL) and radius tolerances?
Yes. Durable Mills offers OEM/ODM solutions, including extended reach necks, long shanks up to 150 mm, and tight radius tolerances (±0.005 mm) tailored to your tooling specifications.
Q4: What is the typical lead time for B2B wholesale orders?
Standard catalog models are stocked in volume for dispatch within 2-5 business days. Custom manufactured runs typically require 10-15 business days depending on quantity.
