4-Flute Type for High-Efficiency Processing AE-BM-H

Caution
- Limited Time Offer: BUY 3 GET 4
- Get 1 Free Sample when purchase minimum of 3 pcs for NEW AE-series and AD- series customers.
- **Free 1 pc will be delivered separately at a different delivery time set upon makers’ stock availability.
Product Description
Carbide ball end mills from OSG
Newly developed DUROREY coating enables superior heat resistance and high toughness optimized for high-hardness steel milling!
Patent pending in Japan
toughness while maintaining high heat resistance and abrasion resistance.
Also suppresses chipping even in high hardness milling and achieves long tool life.

| Coating Color | Coating Structure | Hardness (GPa) | Oxidation Temperature (°C) | Heat Resistance | Adhesion Strength | Surface Roughness | Wear Resistance | Welding Resistance | Toughness |
|---|---|---|---|---|---|---|---|---|---|
| Black Gray | Ultra-Fine Periodic Nano-Layered | 41 | 1,300 | ☆ | ◎ | ○ | ☆ | ◎ | ◎ |
(Fair) ○→◎→☆ (Best)
DUROREY is a registered trademark of OSG Corporation.
3 types of end mills to accommodate a wide range of milling applications
Machine: Five-axis Machining Center
Main Spindle: HSK63
Coolant: MQL
Maximum RPM: 25,000min-1
Holder: FShrink Fit


| Process | Milling Part | Milling Method | Milling Process | Tool |
|---|---|---|---|---|
| ① | Overall | 3-axis contouring line | High-efficiency roughing | AE-BM-H R5 |
| ② | Chamfer | 3-axis contouring line | Semi-roughing | |
| ③ | Groove | 5-axis profiling | Semi-roughing | |
| ④ | Ridge | 5-axis turn milling | Roughing-Semi-roughing | |
| ⑤ | Groove | 5-axis profiling | High-precision finishing | AE-BD-H R5 × 30 |
| ⑥ | Ridge | 5-axis profiling | High-precision finishing | AE-LNBD-H R3 × 40 × 6 |
| ⑦ | Middle bottom | 5-axis turn milling | High-precision finishing | |
| ⑧ | Bottom | 5-axis turn milling | High-precision finishing | |
| ⑨ | Chamfer | 3-axis contouring line | High-precision finishing | AE-BD-H R5 × 30 |
4-flute high-efficiency Carbide ball end mill for high-hardness steel
AE-BM-H

1. Thickness at the center
• Reduces cutting resistance and enables stable performance with extended tool life.
2. Center 2-flute specification
• Controls tear when milling flat areas to improve surface accuracy.
• Secures chip pockets with the center 2-flute specification to control the clogging of chips.
• Suitable for a wide range of processes, from roughing to semi-roughing.

4. Unequal flute spacing
• Controls harmonic vibration commonly generated during milling with multiple flutes to enable high-efficiency milling.
Long Tool Life
Exhibits superior endurance in high-hardness steel milling.


Low Cutting Force
Effects of sharp spiral curve and unequal flute spacing enable stable milling with low resistance.

Specifications

Surface treatment: DUROREY Coating
Tolerance of Radius: ±0.003 (RE ≤ 0.25), ±0.005 (0.25 ≤ RE)
Tolerance for Shank Diameter: h4
Suitable for the shrink holder system
Helix Angle: 25°


| EDP No. | RE × LU | LF | APMX | LH | DCON | DN | θk | Effective length by inclined angles (Le) *Note 1 | Type | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.5° | 1° | 1.5° | 2° | 3° | |||||||||
| 8549602 | R1 × 4 | 50 | 2 | 12 | 6 | 1.95 | 10.64° | 4.19 | 4.3 | 4.42 | 4.55 | 4.85 | 1 |
| 8549603 | R1.5 × 6 | 50 | 3 | 12 | 6 | 2.85 | 8.15° | 6.44 | 6.61 | 6.79 | 7 | 7.45 | |
| 8549604 | R2 × 8 | 60 | 4 | 12.1 | 6 | 3.85 | 5.65° | 8.49 | 8.71 | 8.96 | 9.22 | 9.81 | |
| 8549605 | R2.5 × 10 | 60 | 5 | 12.2 | 6 | 4.85 | 2.95° | 10.54 | 10.82 | 11.12 | 11.45 | - | |
| 8549606 | R3 | 60 | 9 | - | 6 | - | - | - | - | - | - | - | 2 |
| 8549608 | R4 | 70 | 12 | - | 8 | - | - | - | - | - | - | - | |
| 8549610 | R5 | 80 | 15 | - | 10 | - | - | - | - | - | - | - | |
| 8549612 | R6 | 90 | 18 | - | 12 | - | - | - | - | - | - | - | |
Note 1: If there is no value in the actual e ective length (Le column) for the work gradient angle α, it indicates no interference.
Cutting Data
Roughing
The machining path is on condition of contouring line operation.
| Work Material | Tool Steel • Hardened Steel • Prehardened Steel SKD11 • SKD61 • NAK80 (Approximately 45HRC) | Hardened Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ~55HRC | ~62HRC | ~66HRC | ~70HRC | |||||||
| RE | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) |
| R1 | 20,700 | 3,310 | 18,300 | 1,830 | 15,900 | 1,590 | 14,300 | 1,140 | 9,600 | 770 |
| R1.5 | 13,800 | 2,760 | 12,200 | 1,710 | 10,600 | 1,480 | 9,600 | 1,150 | 6,400 | 770 |
| R2 | 10,400 | 2,500 | 9,200 | 1,660 | 8,000 | 1,440 | 7,200 | 1,150 | 4,800 | 770 |
| R2.5 | 8,300 | 2,660 | 7,300 | 1,900 | 6,400 | 1,660 | 5,700 | 1,370 | 3,800 | 910 |
| R3 | 6,900 | 2,760 | 6,100 | 1,950 | 5,300 | 1,700 | 4,800 | 1,340 | 3,200 | 900 |
| R4 | 5,200 | 2,500 | 4,600 | 1,840 | 4,000 | 1,600 | 3,600 | 1,300 | 2,400 | 860 |
| R5 | 4,500 | 2,340 | 4,000 | 1,760 | 3,500 | 1,540 | 3,200 | 1,280 | 2,200 | 850 |
| R6 | 4,000 | 2,240 | 3,600 | 1,730 | 3,200 | 1,540 | 2,900 | 1,160 | 2,100 | 840 |

Finishing
The machining path is on condition of contouring line operation.
| Work Material | Tool Steel • Hardened Steel • Prehardened Steel SKD11 • SKD61 • NAK80 (Approximately 45HRC) | Hardened Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ~55HRC | ~62HRC | ~66HRC | ~70HRC | |||||||
| RE | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) |
| R1 | 27,100 | 4,340 | 24,700 | 2,470 | 22,300 | 1,780 | 18,300 | 1,460 | 13,500 | 1,080 |
| R1.5 | 18,000 | 3,600 | 16,500 | 2,310 | 14,900 | 1,780 | 12,200 | 1,460 | 9,000 | 1,080 |
| R2 | 13,500 | 3,240 | 12,300 | 2,210 | 11,100 | 1,780 | 9,200 | 1,470 | 6,800 | 1,090 |
| R2.5 | 10,800 | 3,460 | 9,900 | 2,570 | 8,900 | 2,140 | 7,300 | 1,750 | 5,400 | 1,300 |
| R3 | 9,000 | 3,600 | 8,200 | 2,620 | 7,400 | 2,070 | 6,100 | 1,710 | 4,500 | 1,260 |
| R4 | 6,800 | 3,260 | 6,200 | 2,480 | 5,600 | 1,790 | 4,600 | 1,470 | 3,400 | 1,090 |
| R5 | 5,700 | 2,960 | 5,300 | 2,330 | 4,800 | 1,730 | 4,000 | 1,440 | 3,000 | 1,080 |
| R6 | 5,000 | 2,800 | 4,600 | 2,210 | 4,200 | 1,680 | 3,500 | 1,400 | 2,800 | 1,120 |

High-Speed Roughing
Caution:Sparks generated during operation or heat caused by tool breakage can cause fire.
Be sure to use all proper re -prevention measures.
The conditions below are for high speed / high precision machining centers.
The machining path is on condition of contouring line operation
| Work Material | Tool Steel • Hardened Steel • Prehardened Steel SKD11 • SKD61 • NAK80 (Approximately 45HRC) | Hardened Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ~55HRC | ~62HRC | ~66HRC | ~70HRC | |||||||
| RE | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) |
| R1 | 37,300 | 5,970 | 33,000 | 3,300 | 28,700 | 2,870 | 25,800 | 2,060 | 17,200 | 1,380 |
| R1.5 | 24,800 | 4,960 | 22,000 | 3,080 | 19,100 | 2,670 | 17,200 | 2,060 | 11,500 | 1,380 |
| R2 | 20,700 | 4,970 | 18,300 | 3,290 | 15,900 | 2,860 | 14,300 | 2,290 | 9,600 | 1,540 |
| R2.5 | 16,600 | 5,310 | 14,600 | 3,800 | 12,700 | 3,300 | 11,500 | 2,760 | 7,600 | 1,820 |
| R3 | 13,800 | 5,520 | 12,200 | 3,900 | 10,600 | 3,390 | 9,600 | 2,690 | 6,400 | 1,790 |
| R4 | 10,400 | 4,990 | 9,200 | 3,680 | 8,000 | 3,200 | 7,200 | 2,590 | 4,800 | 1,730 |
| R5 | 8,900 | 4,630 | 8,000 | 3,520 | 7,000 | 3,080 | 6,400 | 2,560 | 4,500 | 1,800 |
| R6 | 8,000 | 4,480 | 7,200 | 3,460 | 6,400 | 3,070 | 5,800 | 2,320 | 4,200 | 1,680 |

1. Use a rigid and precise machine and holder.
2. We suggest using air blow or MQL (mist).
3. These milling conditions are for an end mill where the tool extension length is 4 times the diameter of the end mill. When length of the tool extension from the machine is long,
reduce the speed and feed and milling depth.
4. The above condition shows an approximate standard for contouring operation (side milling) with a low machining load. If abnormal cutting sounds,
vibration or chattering occur depending on the machining shape, cutting amount, rigidity of the machine or work holding condition, etc., please adjust the speed, feed and the depth of cut.
5. When the radius of curvature is less than 1.5 times the tool diameter, please reduce the speed to 50-80%, the feed rate to 50-80%, and the pick feed to 20-60% of the above shown cutting conditions.
6. When the machining incline angle (β) is more than 15°, please reduce the speed to 40-60%, the feed 30-50%, and the axial cutting depth to 30-60% of the above shown cutting conditions.
7. If the cutting depth is small, it is possible to further increase the speed and feed.
High-Speed Roughing
Caution:Sparks generated during operation or heat caused by tool breakage can cause fire.
Be sure to use all proper re -prevention measures.
The conditions below are for high speed / high precision machining centers.
The machining path is on condition of contouring line operation.
| Work Material | Tool Steel • Hardened Steel • Prehardened Steel SKD11 • SKD61 • NAK80 (Approximately 45HRC) | Hardened Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ~55HRC | ~62HRC | ~66HRC | ~70HRC | |||||||
| RE | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) | Speed (min-1) | Feed (mm/min) |
| R1 | 40,610 | 6,500 | 37,020 | 3,700 | 33,440 | 2,680 | 27,470 | 2,200 | 20,300 | 1,620 |
| R1.5 | 27,070 | 5,410 | 24,680 | 3,460 | 22,290 | 2,670 | 18,310 | 2,200 | 13,540 | 1,620 |
| R2 | 24,360 | 5,850 | 22,210 | 4,000 | 20,060 | 3,210 | 16,480 | 2,640 | 12,180 | 1,950 |
| R2.5 | 19,490 | 6,240 | 17,770 | 4,620 | 16,050 | 3,850 | 13,180 | 3,160 | 9,750 | 2,340 |
| R3 | 16,240 | 6,500 | 14,810 | 4,740 | 13,380 | 3,750 | 10,990 | 3,080 | 8,120 | 2,270 |
| R4 | 12,180 | 5,850 | 11,110 | 4,440 | 10,030 | 3,210 | 8,240 | 2,640 | 6,090 | 1,950 |
| R5 | 10,320 | 5,370 | 9,460 | 4,160 | 8,600 | 3,100 | 7,170 | 2,580 | 5,450 | 1,960 |
| R6 | 9,080 | 5,080 | 8,360 | 4,010 | 7,640 | 3,060 | 6,210 | 2,480 | 5,020 | 2,010 |

1. Use a rigid and precise machine and holder.
2. We suggest using air blow or MQL (mist).
3. These milling conditions are for an end mill where the tool extension length is 4 times the diameter of the end mill. When length of the tool extension from the machine is long,
reduce the speed and feed and milling depth.
4. The above condition shows an approximate standard for contouring operation (side milling) with a low machining load. If abnormal cutting sounds, vibration or chattering occur depending on the machining shape,
cutting amount, rigidity of the machine or work holding condition, etc., please adjust the speed, feed and the depth of cut.
5. When the radius of curvature is less than 1.5 times the tool diameter, please reduce the speed to 50-80%, the feed rate to 50-80%, and the pick feed to 20-60% of the above shown cutting conditions.
6. When the machining incline angle (β) is more than 15°, please reduce the speed to 40-60%, the feed 30-50%, and the axial cutting depth to 30-60% of the above shown cutting conditions.
7. If the cutting depth is small, it is possible to further increase the speed and feed.