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NMTB Taper Collet Chucks
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Hold collets tightly in older CNC machines with NMTB taper spindles for milling, drilling, and routing. The shank on these chucks is precision ground to the industry standard AT3 tolerance—or better—for a secure fit that minimizes runout in your machine spindle. Internal threads in the shank connect to your machine's drawbar.
Insert your collet and tighten the nut to clamp your tool in place.
To maximize grip and minimize runout, choose a chuck where your tool diameter falls in the middle of the bit shank size range.
Collet Stop Screw—Chucks with a collet stop screw set the tool depth in the chuck for consistent, repeatable performance when you change tools.
Milling Machine Collet Chucks | Wrenches | Replacement Nuts | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Collet Type | For Bit Shank Size | Projection | Total Indicated Runout (TIR) Accuracy | Material | Compatible With | Collet Nut Type | Coolant Delivery Type | Features | Specs. Met | Each | Each | Each | |||||
NMTB 30 Machine Taper | |||||||||||||||||
| ER-11 | 0.019" to 0.275" | 2" | 0.0001" | Hardened Alloy Steel | Erickson Quick Change | Hex Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N19 | 0000000 | 5699N127 | 000000 | 6163N111 | 000000 | ||
| ER-16 | 0.019" to 0.406" | 2" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Hex Nut | Through Bore | — | ASME B5.18 | 9514N21 | 000000 | 3215A441 | 00000 | 9502N13 | 00000 | ||
| ER-32 | 0.078" to 0.787" | 2.5" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Slotted Nut | Through Bore | — | ASME B5.18 | 9514N22 | 000000 | 3321A32 | 00000 | 9502N15 | 00000 | ||
| TG-75 | 0.0469" to 0.75" | 2.5" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Slotted Nut | Through Bore | — | ASME B5.18 | 9514N23 | 000000 | 3321A32 | 00000 | 9502N14 | 00000 | ||
NMTB 40 Machine Taper | |||||||||||||||||
| ER-16 | 0.019" to 0.406" | 1.77" | 0.0001" | Hardened Alloy Steel | — | Hex Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N13 | 000000 | 3215A441 | 00000 | 9502N33 | 00000 | ||
| ER-20 | 0.039" to 0.551" | 1.97" (50 mm) | 0.0002" | Hardened Alloy Steel | — | Hex Nut | Through Bore | Collet Stop Screw | — | 9514N11 | 000000 | 1721N15 | 00000 | 9502N11 | 00000 | ||
| ER-25 | 0.039" to 0.629" | 2" | 0.0001" | Hardened Alloy Steel | — | Slotted Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N14 | 000000 | 5699N128 | 00000 | 9502N35 | 00000 | ||
| ER-32 | 0.078" to 0.787" | 2" | 0.0001" | Hardened Alloy Steel | — | Slotted Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N15 | 000000 | 3321A32 | 00000 | 9502N36 | 00000 | ||
| ER-40 | 0.118" to 1.024" | 2.5" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Slotted Nut | Through Bore | — | ASME B5.18 | 9514N24 | 000000 | 32605A95 | 00000 | 9502N16 | 00000 | ||
| TG-75 | 0.0469" to 0.75" | 2.5" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Slotted Nut | Through Bore | — | ASME B5.18 | 9514N25 | 000000 | 3321A32 | 00000 | 9502N14 | 00000 | ||
| TG-100 | 0.0469" to 1" | 3" | 0.0001" | Hardened Alloy Steel | — | Slotted Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N16 | 000000 | 32605A95 | 00000 | 9531N12 | 00000 | ||
NMTB 50 Machine Taper | |||||||||||||||||
| ER-16 | 0.019" to 0.406" | 2" | 0.0001" | Hardened Alloy Steel | — | Hex Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N17 | 000000 | 3215A441 | 00000 | 9502N33 | 00000 | ||
| ER-40 | 0.118" to 1.024" | 2.75" | 0.0002" | Hardened Alloy Steel | Erickson Quick Change | Slotted Nut | Through Bore | — | ASME B5.18 | 9514N26 | 000000 | 32605A95 | 00000 | 9502N16 | 00000 | ||
| TG-100 | 0.0469" to 1" | 3.5" | 0.0001" | Hardened Alloy Steel | — | Slotted Nut | Through Bore | Collet Stop Screw | ASME B5.18 | 9514N18 | 000000 | 32605A95 | 00000 | 9531N12 | 00000 | ||
Drill Chucks with NMTB Taper Integral Arbor
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Limit runout and slippage under heavy cutting forces from manual mills and older CNC mills. These chucks have an integrated arbor for a one-piece design that makes them more accurate and compact than chucks with a separate arbor. Made of hardened steel, they resist wear from repeated use. Their shank is precision ground to the industry standard AT3 tolerance for a tight fit in your spindle. They meet ASME standards for compatibility across machines with NMTB spindles. They're also compatible with older Erickson quick change spindles. Internal threads in the shank connect to your machine's drawbar.
Twist the sleeve by hand to swap bits out quickly. The grip on the bit tightens as torque increases.
To maximize grip and minimize runout, choose a chuck where your drill bit diameter falls in the middle of the bit shank size range.
Machine Taper No. | For Bit Shank Size | Max. No-Load Rotational Speed, rpm | Total Indicated Runout (TIR) Accuracy | Jaw Material | Body Material | Projection | Max. Body Dia. | For Tool Drive Direction | Features | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Keyless Chuck | ||||||||||||||
| NMTB 40 | 0" to 5/16" 0 mm to 8 mm | 7,000 | 0.0016" | Hardened Steel | Hardened Steel | 3" | 2.5" | Clockwise | Wrench Flats | ASME B5.18 | 9985N11 | 0000000 | ||
| NMTB 40 | 1/32" to 1/2" 1 mm to 13 mm | 5,000 | 0.0016" | Hardened Steel | Hardened Steel | 3 3/8" | 2.5" | Clockwise | Wrench Flats | ASME B5.18 | 9985N12 | 000000 | ||
