This Ultra-Dex USA A20U MCLNR4 is a 1-1/4" shank diameter right-hand indexable boring bar designed for negative 80° diamond CNMG inserts. Featuring coolant-through capability, a 14-inch overall length, and clamp with lock-pin insert holding, this precision tool is built for robust CNC and manual lathe boring operations.
We have inspected this item and we do not have the capability to fully test it. There are some slight cosmetic scuffs and scratches throughout the unit.
Please refer to the photos for more information.
This unit only includes what is photographed in the listing. No insert is included.
Made in USA.
Technical Specs
| Item | Indexable Boring Bar |
| Insert Style | CNMG |
| Insert Shape | 80° Diamond |
| Insert Clearance Angle | 0 ° |
| Overall Length | 14 in |
| Shank Dia. | 1-1/4 in |
| Coolant Fed | Coolant Through |
| Number of Inserts | 0 |
| Center to Cutting Tip | 0.7650 in |
| Cutting Application | Boring |
| Cutting Direction | Right Hand |
| Head Material | Steel |
| Insert Holding Type | Clamp and Lock Pin |
| Insert Inscribed Circle | 1/2 in |
| Insert Size | 432 |
| Min. Bore Dia. | 1.4700 in |
| Rake | Negative |
| Shank Material | High Speed Steel |
| Side Cutting Edge Angle | -5° |
| Country of Origin | USA |