Tapping Unit Includes:
- Pneumatic tapping spindle
- Stretch arm
- Slanted arm
- Table mounting column
- Air unit
- 6 safety clutch tapping adapters
| Model | Tap Capacity (Inch) | Speed (RPM) | Work Range Rmax/Rmin (Inch) | Weight (lbs) |
| AT-20/II | 0-3/4 | 150/400 | 74.8/7.87 | 83.78 |
Replacement Parts for Tapping Machines
| # | Description | For Use on Tapping Unit | Code |
| 1 | Air Filter Regulator for AS-12/II, AT-12/I and AT-20/II | 302799, 302800, 302801 | 302805 |
| 2 | Tapping Arm (36 Inch) for AS-12/II | 302799 | 302878 |
| 3 | Spindle for AS-12/II or AT-12/I | 302799, 302800 | 302875 |
| 3 | Spindle (Heavy Duty) for AS-12/II or AT-12/I | 302799, 302800 | 302876 |
| 2 | Tapping Arm (57 Inch) for AT-12/I | 302800 | 302879 |
| 2 | Tapping Arm (57 Inch) for AT-20/II | 302801 | 302880 |
| 3 | Spindle for AT-20/II | 302801 | 302877 |
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