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BRA
CUTTING RESISTANCE
Workpiece : DIN X5CrNi189 (200HB) Cutting Speed : 60m/min
Power Consumption
Thrust
Torque
Reason for Low Thrust Load
IDENTIFICATION FOR BRA
1) Drill Type
| Type | Description | Applications |
Products Name | |||||
|---|---|---|---|---|---|---|---|---|
| Point Angle | Hole Depth | Helix Angle | Relief Angle | Back Taper | Body Dia. | |||
| BRA | 150° | l/d=3–4 | 20° | 10° | 0.3mm /100mm | øD1-0.2mm | For General Use (Carbon / Alloy / Stainless Steel) |
BRA S |
2) Shank Size
| Type | Shank Diameter | Drill Diameter |
|---|---|---|
| S16 |
ø16(h6) | ø8.0≤D1≤ø14.5 |
| S20 | ø20(h6) | ø14.5˂D1≤ø18.5 |
| S25 | ø25(h6) | ø18.5˂D1≤ø23.5 |
| S32 | ø32(h6) | ø23.5˂1≤ø30.5 |
| S40 | ø40(h6) | ø30.5˂D1≤ø40.0 |
3) Honing Type
| Type | Honing Width(mm) | Workpiece |
|---|---|---|
| BRA | ||
| -(Standard) |
0.15–0.2 |
Carbon Steel, Alloy Steel, Mild Steel |
| S | 0.2–0.25 | – |
| M | 0.25–0.3 | – |
| L | 0.3–0.4 | – |
| H | 0.05–0.1 | Stainless Steel, Heat Resistant Alloy, Titanium Alloy |
| G | 0.025–0.08 | Cast Iron, Aluminum Alloy, Non-Ferrous Metals |
