
Demand
| Workpiece Materials | S55C tempered steel(30HRC) |
| Machine | MC |
| Feed | Synchronous feed |
| Cutting Fluid | Water soluble cutting fluid |
| Bore Hole Size | φ7.1 |
| Bored Hole Length | 15mm(through hole) |
| Tapping Length | Step 1 is grinding the flute. 15mm |
Tapping Speed 12.5m/min
M20 × 2.5 (GB) GO gage.
Workpiece Materials SCM440 Effective thread 20mm(through hole) length Classes of Class II+30(μm) Internal Threads Since the internal threads can shrink during the hardening Reason for process, we produce oversize taps oversize for this application. This simple inspection tool is for checking Step 1 is grinding the flute. II+30 oversize internal thread.