Chip Breaker Router Feed and Speed Chart
Use this chart as a general starting point for our solid carbide chip breaker routers. Chip breaker routers are commonly used for routing PCB laminates and abrasive composite materials where chip control, heat reduction, and routing stability are important.
Important: These feed and speed values are starting points only. Actual settings may vary depending on material, spindle runout, machine rigidity, hold-down method, depth of cut, tool condition, and desired finish. Always test on scrap material and adjust as needed.
If your machine cannot reach the listed RPM:
Use your machine’s highest practical spindle speed, then reduce the feed rate in the same proportion.
Adjusted Feed Rate = Chart Feed Rate × Your Max RPM ÷ Chart RPM
Example: if the chart lists 15 IPM at 60,000 RPM, but your machine only reaches 40,000 RPM:
15 × 40,000 ÷ 60,000 = 10 IPM
Start around 10 IPM, then adjust based on cut quality, tool sound, heat, chip evacuation, and edge finish.
Adjusted Feed Rate = Chart Feed Rate × Your Max RPM ÷ Chart RPM
Example: if the chart lists 15 IPM at 60,000 RPM, but your machine only reaches 40,000 RPM:
15 × 40,000 ÷ 60,000 = 10 IPM
Start around 10 IPM, then adjust based on cut quality, tool sound, heat, chip evacuation, and edge finish.
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Chip Breaker Router Feed and Speed Chart
Starting values for standard flute length and extended flute length chip breaker routers.
| Router Size | Diameter (inch) |
Feed (inch/min) |
Speed (k-rpm) |
Plunge Feed (inch/min) |
Z-Axis Offset (inches) |
|---|---|---|---|---|---|
| 1/32" | 0.0315 | 15 | 60 | 20 | -0.020 |
| 0.90mm | 0.0354 | 15 | 55 | 20 | -0.020 |
| 1.00mm | 0.0394 | 20 | 55 | 20 | -0.020 |
| 1.10mm | 0.0433 | 25 | 50 | 25 | -0.020 |
| 1.20mm | 0.0472 | 30 | 47 | 25 | -0.025 |
| 1.27mm | 0.0500 | 35 | 46 | 25 | -0.025 |
| 1.30mm | 0.0512 | 35 | 45 | 25 | -0.025 |
| 1.40mm | 0.0551 | 35 | 40 | 25 | -0.025 |
| 1.50mm | 0.0591 | 35 | 38 | 25 | -0.030 |
| 1/16" | 0.0625 | 40 | 36 | 25 | -0.030 |
| 1.60mm | 0.0630 | 40 | 36 | 25 | -0.030 |
| 1.70mm | 0.0669 | 40 | 34 | 25 | -0.030 |
| 1.80mm | 0.0709 | 40 | 34 | 25 | -0.035 |
| 1.90mm | 0.0748 | 40 | 30 | 25 | -0.035 |
| 2.00mm | 0.0787 | 40 | 27 | 25 | -0.035 |
| 2.10mm | 0.0827 | 40 | 27 | 25 | -0.040 |
| 2.20mm | 0.0866 | 40 | 25 | 25 | -0.040 |
| 2.30mm | 0.0906 | 40 | 25 | 25 | -0.040 |
| 3/32" | 0.0938 | 40 | 24 | 25 | -0.045 |
| 2.40mm | 0.0945 | 40 | 24 | 25 | -0.045 |
| 2.50mm | 0.0984 | 40 | 22 | 25 | -0.050 |
| 2.55mm | 0.1004 | 40 | 22 | 25 | -0.050 |
| 3.00mm | 0.1181 | 40 | 20 | 25 | -0.055 |
| 3.10mm | 0.1220 | 40 | 20 | 25 | -0.060 |
| 1/8" | 0.1250 | 40 | 20 | 25 | -0.060 |
These values are intended as general starting points. Reduce feed rate, depth of cut, or spindle load if you see excessive heat, poor edge quality, chatter, tool deflection, or premature tool wear.