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Retention Knobs
Knob with Coolant Hole
Knob with Coolant Hole
Attach tool holders such as collet chucks and end mill holders to your CNC machine’s spindle. For proper operation, choose a knob that exactly matches your collet type and spindle dimensions. All meet industrial standards for tensile and shear strength. These knobs are also known as pull studs.
Knobs with a coolant hole let coolant flow through to protect your tools and workpiece.
| Grip Angle | Projection | Head Dia. | Collar Dia. | Head-to-Flange Lg. | Flange Thick. | ID | Torque Range | Material | Features | Manufacturer | Manufacturer Model No. | Specifications Met | Each | |
CAT 40 Taper | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5/8"-11 | ||||||||||||||
| 15° | 1.03" | 0.748" | 0.512" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40-1500 | ISO 7388-3, JIS B 6339 | 0000000 | 000000 |
| 15° | 1.03" | 0.748" | 0.641" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | C40-1500(R) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 15° | 1.03" | 0.748" | 0.641" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | C40-1500-MORI | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 0.64" | 0.74" | 0.512" | 0.433" | 0.12" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40-STD | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 0.64" | 0.74" | 0.641" | 0.44" | 0.12" | 0.157" | Not Rated | Steel | O-Ring, Coolant Hole | Lyndex Nikken | PS-B64-1 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 1.266" | 0.591" | 0.512" | 0.99" | 0.24" | 0.177" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40S-4500(H) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
CAT 50 Taper | ||||||||||||||
1"-8 | ||||||||||||||
| 30° | 1.772" | 0.906" | 1.024" | 1.378" | 0.39" | 0.236" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | PS-B61 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 1" | 1.142" | 0.768" | 0.701" | 0.2" | 0.461" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C50-STD | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 1.78" | 0.906" | 0.827" | 1.386" | 0.39" | 0.236" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C50-4500(H) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
BT 40 Taper | ||||||||||||||
M16 × 2 mm | ||||||||||||||
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | B40-1500(R) | JIS B 6339 | 0000000 | 00000 |
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B40-1500 | JIS B 6339 | 0000000 | 00000 |
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.34" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | B40-1500-MORI | JIS B 6339 | 0000000 | 00000 |
| 45° | 1.378" | 0.591" | 0.669" | 1.102" | 0.24" | 0.181" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B40-4500(H) | JIS B 6339 | 0000000 | 00000 |
BT 50 Taper | ||||||||||||||
M24 × 3 mm | ||||||||||||||
| 45° | 1.772" | 0.906" | 0.984" | 1.378" | 0.39" | 0.276" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B50-4500(H) | JIS B 6339 | 0000000 | 00000 |
ER-32 Collets
Collet with Coolant
Install into an ER-32 collet chuck or holder to tightly grip round-shank tool bits in milling machines.
Collets with coolant seals keep tools cool to extend tool life.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Features | Max. Coolant Pressure, psi | Specifications Met | Each | |
Round | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.234"-0.250" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 000000 |
| 17/64" | 0.250"-0.266" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 19/64" | 0.281"-0.297" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 5/16" | 0.297"-0.312" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 21/64" | 0.312"-0.328" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 11/32" | 0.328"-0.344" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 3/8" | 0.359"-0.375" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 25/64" | 0.375"-0.391" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 13/32" | 0.391"-0.406" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 7/16" | 0.422"-0.437" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 29/64" | 0.437"-0.453" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 15/32" | 0.453"-0.469" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 31/64" | 0.469"-0.484" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 1/2" | 0.484"-0.500" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 33/64" | 0.500"-0.516" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 9/16" | 0.547"-0.563" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 5/8" | 0.609"-0.625" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 41/64" | 0.625"-0.641" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 3/4" | 0.734"-0.750" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 49/64" | 0.750"-0.766" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 10mm | 9.5 mm-10 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 10.5mm | 10 mm-10.5 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 11mm | 10.5 mm-11 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 12mm | 11.5 mm-12 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 13.5mm | 13 mm-13.5 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 14mm | 13.5 mm-14 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |
| 20mm | 19.5 mm-20 mm | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | Coolant Seal | 1,000 | DIN 6499, ISO 15488B | 00000000 | 00000 |