Milling machine arbors are made of top quality one piece forgings. Carefully heat treated and surfaces ground with extremely narrow tolerances assure a rigid setup and accurate machining operations. All threads are ground. Arbors are equipped with assorted width solid spacers and necessary running bushings with standard keyways and threaded arbor nut.
| Manufacturer Part Number | 400255 |
| Shank Type | Taper Shank |
| Taper Size | NMTB50 |
| Projection Flange to Nose End (Inch) | 3-1/2" |
| Arbor Diameter (Inch) | 1" |
| Model Number | 51 - B3-1/2 |
| Bushings Furnished | None |
| Running Bushing | None |
| Product Type | Shell Mill Holder |