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NMTB Taper to Jacobs Taper Drill Chuck Arbors
Adapt machines with NMTB taper spindles to mount Jacobs taper drill chucks. These arbors are made of hardened steel to resist wear. Their shank is precision ground to the industry standard AT3 tolerance for a secure fit that minimizes runout in your machine spindle. Internal threads in the shank connect to your machine's drawbar. These arbors meet ANSI standards for compatibility across machines with NMTB spindles. They're also compatible with older Erickson quick-change spindles.
Strike the top of the arbor to seat them onto a drill chuck. To separate them, use a drill chuck removal tool.
| Shank Type | For Drill Chuck Jacobs Taper Number | Overall Lg. | Projection | Material | For Use With | Specifications Met | Each | |
| NMTB 30 Taper | 3 | 4 3/8" | 1 11/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N11 | 000000 |
| NMTB 30 Taper | 6 | 4 5/32" | 1 1/2" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N13 | 00000 |
| NMTB 30 Taper | 33 | 4 5/32" | 1 1/2" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N12 | 00000 |
| NMTB 40 Taper | 2, 2S | 5 1/16" | 1 7/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N14 | 00000 |
| NMTB 40 Taper | 3 | 5 7/16" | 1 3/4" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N15 | 00000 |
| NMTB 40 Taper | 6 | 5 7/32" | 1 9/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N16 | 00000 |
| NMTB 40 Taper | 33 | 5 7/32" | 1 9/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N17 | 00000 |
| NMTB 50 Taper | 3 | 6 7/8" | 1 15/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N18 | 000000 |
| NMTB 50 Taper | 4 | 7 3/8" | 2 3/8" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N19 | 000000 |
| NMTB 50 Taper | 5 | 7 9/16" | 2 9/16" | Hardened Steel | CNC Lathes, CNC Machines, Lathes, Milling Machines | ANSI B5.18 | 9257N21 | 000000 |