Find the right working conditions for Telcon tools
Milling Cutting Conditions | ||||||||
Material | Cutting speed (m/min) for PCD or CVD End-Mills | Cutting speed (m/min) for Carbide End-Mills |  Feed per Revolution (mm) by Diameter | |||||
 2 – 3 |  4 – 5 |  6 – 8 |  8 – 10 |  10 – 12 |  12 – 16 | |||
CFRP Unidirectional | 150-200 | 100 – 150 | 0.1 – 0.15 | 0.15 – 0.2 | 0.18-0.23 | 0.2 – 0.3 | 0.25 – 0.35 | 0.3 – 0.4 |
CFRP Weave | 100-150 | 70 – 120 | 0.08 – 0.12 | 0.12 – 0.18 | 0.15 – 0.2 | 0.18 – 0.25 | 0.2 – 0.3 | 0.25 – 0.35 |
GFRP | 250 – 300 | 150 – 200 | 0.1-0.2 | 0.15-0.25 | 0.2 – 0.3 | 0.25 – 0.4 | 0.3 – 0.4 | 0.35 – 0.5 |
Aluminum-Si | 200 – 300 | 120 – 170 | 0.1 – 0.15 | 0.15 – 0.2 | 0.18-0.23 | 0.2 – 0.3 | 0.25 – 0.35 | 0.3 – 0.4 |
* Conditions are for roughing and semifinish. For finishing, reduce feed and speed according desired surface and accuracy requirements. | ||||||||
** When part clamping on the jig is unstable, reduce RPM to avoid vibrations. | ||||||||
***When machining low Silicon content Aluminum, cutting speed can be doubled. |

Drilling Cutting Conditions | |||||||
Material | Cutting speed (m/min) for PCD or CVD drills | Cutting speed (m/min) for carbide drills |  Feed per revolution (mm), by Diameter | ||||
 2 – 3 |  4 – 5 |  6 – 7 |  7 -8 |  8 – 10 | |||
CFRP Unidirectional | 100 – 150 | 70 – 100 | 0.02-0.03 | 0.04-0.06 | 0.05-0.07 | 0.06-0.08 | 0.09-0.1 |
CFRP Bidirectional | 80 – 120 | 60 – 80 | 0.01-0.02 | 0.015-0.025 | 0.02-0.03 | 0.03-0.04 | 0.04-0.05 |
CFRP/Al * | 100-150 | 70 – 100 | 0.07-0.1 | 0.1-0.14 | 0.12-0.16 | 0.13-0.18 | 0.15-0.2 |
CFRP/Ti ** | NA | 50 – 70 | 0.02-0.03 | 0.04-0.06 | 0.05-0.07 | 0.06-0.08 | 0.09-0.1 |
GFRP | 200 – 300 | 150 – 250 | 0.03 – 0.04 | 0.05-0.07 | 0.06-0.08 | 0.08-0.1 | 0.1-0.15 |
Aluminum-Si | 200 – 300 | 150 – 250 | 0.07-0.1 | 0.1-0.14 | 0.12-0.16 | 0.13-0.18 | 0.15-0.2 |
* If Aluminum is on exit, then on the Aluminum section only, pecking cycle of 1.5 – 2.0mm with dwell of 0.1mm |  ** If Titanium is on exit, then on the Titanium section only, pecking cycle of 1.0 – 1.5mm with dwell of 0.1mm |  ** When part clamping on the jig is unstable, reduce RPM to avoid vibrations. |  |  |  |  |  |

RPM = | (Cutting speed (m/min) x 1000)/(Ï€ x Diameter (mm)) |
RPM = | (Cutting speed (sfm) x 11.81)/(Ï€ x Diameter (inch)) |
Cutting Speed (m/min)= | RPM x π x Diameter (mm)/1000 |
Cutting Speed (SFM)= | RPM x π x Diameter (inch)/11.81 |
Table Feed (mm/min)= | RPM x Feed per revolution(mm) |
1 IPM = | 25.4 mm/min |
1 SFM = | 3.33 m/min |