
.ARCO coating provides a superior wear resistance. .Suitable for HRC 50 and over HRC 50 Hardened Steel, also maximum up to HRC 65. .Various tape angle makes it suitable for different applications. .Small corner radius applied protect chipping of cutting edges. High strength of taper neck, can cut deep grooves without breaking.
| Order No. | Dia. (d) | Corner Radius (R) | θ˚ | CL (L1) | EFF-L (L2) | OAL (L) | Shank (D) | Flutes (F) |
| EHCRT20300525AA | 3.0 | 0.50R | 1.5° | 4.5 | 25 | 75 | 6 | 2 |
| EHCRT20301025AA | 3.0 | 1.00R | 1.5° | 4.5 | 25 | 75 | 6 | 2 |
| EHCRT20301039AA | 3.0 | 1.00R | 1.5° | 4.5 | 39 | 75 | 6 | 2 |
| EHCRT20301050AA | 3.0 | 1.00R | 1.5° | 4.5 | 50 | 100 | 6 | 2 |
| EHCRT20300535HA5C | 3.0 | 0.50R | 0.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT203005351A5C | 3.0 | 0.50R | 1.0° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20300535AA5C | 3.0 | 0.50R | 1.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20301035HA5C | 3.0 | 1.00R | 0.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT203010351A5C | 3.0 | 1.00R | 1.0° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20301035AA5C | 3.0 | 1.00R | 1.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20350535HA | 3.5 | 0.50R | 0.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT203505351A | 3.5 | 0.50R | 1.0° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20350535AA | 3.5 | 0.50R | 1.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20351035HA | 3.5 | 1.00R | 0.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT203510351A | 3.5 | 1.00R | 1.0° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20351035AA | 3.5 | 1.00R | 1.5° | 5.0 | 35 | 75 | 6 | 2 |
| EHCRT20400545HA | 4.0 | 0.50R | 0.5° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT204005451A | 4.0 | 0.50R | 1.0° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT20400525AA | 4.0 | 0.50R | 1.5° | 6.0 | 25 | 75 | 6 | 2 |
| EHCRT20400545AA | 4.0 | 0.50R | 1.5° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT20401045HA | 4.0 | 1.00R | 0.5° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT204010451A | 4.0 | 1.00R | 1.0° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT20401025AA | 4.0 | 1.00R | 1.5° | 6.0 | 25 | 75 | 6 | 2 |
| EHCRT20401045AA | 4.0 | 1.00R | 1.5° | 6.0 | 45 | 100 | 6 | 2 |
| EHCRT20501025AA | 5.0 | 1.00R | 1.5° | 7.5 | 25 | 75 | 6 | 2 |
| EHCRT20501050AA | 5.0 | 1.00R | 1.5° | 7.5 | 50 | 100 | 8 | 2 |
| EHCRT20601035AA | 6.0 | 1.00R | 1.5° | 9.0 | 35 | 75 | 8 | 2 |
| EHCRT20601050AA | 6.0 | 1.00R | 1.5° | 9.0 | 50 | 100 | 10 | 2 |
d R
θ° L
D
| d | Tolerance |
| d ≤ 6 | 0 ~ -0.02 |
| 6 < d ≤ 12 | 0 ~ -0.03 |
| d > 12 | 0 ~ -0.04 |
| R | Tolerance |
| R < 2 | ±0.015 |
| R ≥ 2 | ±0.020 |