SK COLLETS (SUPER COLLETS) | Pinzas
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Accuracy
PAC Precision Tools SK Collets (Super Collets) are engineered for high-precision tool clamping with enhanced gripping power and concentricity. Designed for demanding CNC machining applications, these collets provide superior holding strength, reduced runout, and improved machining stability compared to standard collet systems.
Engineered from premium hardened spring steel and precision-ground for accuracy, SK Collets from a trusted CNC tools distributor in the USA ensure long service life, consistent clamping performance, and reliable operation in high-speed environments.
- Standard Precision : -0.0002"(5 Micron) @4D
Dimensions

| SK COLLET SERIES | D | L |
|---|---|---|
| SK6 | 11mm | 25mm |
| SK10 | 16mm | 30mm |
| SK13 | 20mm | 39mm |
| SK16 | 25mm | 45mm |
| SK20 | 30mm | 50mm |
| SK25 | 36mm | 57mm |
Features
- High clamping force for strong and secure tool holding
- Enhanced gripping performance compared to standard collets
- Uniform 360° clamping pressure
- Series available: SK06 through SK25
- Optimized slot design for balanced force distribution
- Wide clamping range for versatile tool diameters
- Hardened and tempered spring steel construction
- Precision-ground internal and external surfaces
- Corrosion-resistant surface finish
- Higher accuracy and rigidity compared to other collets
- Covers sizes from 1mm to 25mm
- Suitable for milling, drilling, reaming, and rigid tapping applications
Frequently Asked Questions
1. What are SK Collets (Super Collets), and how do they differ from standard ER collets?
SK Collets, also known as Super Collets, are high-precision collets designed for a stronger gripping force and lower runout than standard ER collets. They provide better tool stability and accuracy, especially in demanding CNC machining operations. As a precision tools supplier in the USA, PAC Precision Tools offers SK collets for reliable performance.
2. What materials can be machined more efficiently using SK Collets?
SK Collets are ideal for machining hard and tough materials such as stainless steel, alloy steel, titanium, and hardened metals. Their strong clamping force and stability help reduce vibration and tool wear during heavy or high-speed cutting.
3. How should SK Collets be maintained to ensure long-term performance?
Clean SK collets after every use, remove chips and coolant residue, and avoid over-tightening. Store them in a dry, clean place and inspect regularly for wear or damage. Proper maintenance helps preserve accuracy and extend collet life.
4. What factors should be considered when selecting an SK Collet for a specific tool size?
Consider the exact tool shank diameter, collet size range, machine speed, and cutting load. Always choose a collet that closely matches the tool size for best grip and accuracy. A CNC tools distributor in the USA can help you select the correct SK collet.
5. How does heat-treated steel construction enhance the durability of SK Collets?
Heat-treated steel increases hardness, strength, and wear resistance. This allows SK collets to maintain consistent clamping force and precision even under high-speed and heavy cutting conditions, resulting in longer service life.
6. Need help selecting SK Collets for your machining needs?
For more information, you can contact us here at +1 262-282-2456 or email us at sales@pactoolsusa.com. PAC Precision Tools USA is a trusted CNC tools distributor in the USA and a precision tools supplier in the USA.
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- Tool Holders
- Collets
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- ER Collet Holders
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- SK Collets (Super Collets)
- Reduction Sleeves For Hydraulic Chuck
- Straight Collets For Milling Chucks
- Quick Change Tapping Adapters
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