Cargo Carbide HSK ER Collet Chuck is a CNC tool-holding solution designed for machining centers that use an HSK spindle interface. The holder combines an HSK machine-side connection with an ER collet system, providing a flexible method for clamping compatible cylindrical-shank cutting tools.

The ER collet system allows different tool diameters to be accommodated by changing the appropriate ER collet within the supported range. This makes an HSK ER collet chuck practical for CNC milling applications where operators regularly use different end mill, drill, reamer and other compatible cylindrical-shank tools.

HSK tool holders are designed around a hollow-shank taper system, and the exact HSK form and size must match the machine spindle. HSK-A is one commonly used form, while HSK-E, HSK-F and other HSK forms serve different machine and application requirements. Therefore, the HSK form should always be confirmed before ordering.

Common HSK-A ER configurations include HSK63A and HSK100A, with ER16, ER20, ER25, ER32 and ER40 options depending on the holder model. For example, industry catalogues list HSK63A ER32 and ER40 as well as HSK100A ER32 and ER40 configurations.

The correct HSK ER holder should be selected according to the machine's HSK form and size, required ER collet capacity, tool shank diameter, holder length and machining application. Clean mating surfaces, correct collet assembly and proper tightening are important for stable tool holding.

Cargo Carbide HSK ER Collet Chucks are suitable for CNC milling, drilling, reaming, profiling, pocketing and general machining-center applications where flexible cylindrical tool clamping is required.

HSK ER Collet Chuck Size Options

HSK63A ER16, HSK63A ER20, HSK63A ER25, HSK63A ER32, HSK63A ER40

HSK100A ER16, HSK100A ER20, HSK100A ER25, HSK100A ER32, HSK100A ER40

Product Specifications

*Availability depends on the selected model.

Applications

• CNC milling
• High-speed machining applications
• VMC and machining-center tooling
• End mill holding
• Drill holding with suitable ER collet
• Reamer holding
• Profile milling
• Pocket milling
• Slot milling
• Die and mould machining
• Precision component manufacturing
• Automotive component machining
• General engineering production
• Multi-tool CNC production environments

Key Benefits

• HSK interface for compatible CNC machining centers
• ER collet system provides flexible tool-diameter clamping
• Available across different HSK and ER configurations
• Suitable for a wide range of cylindrical-shank cutting tools
• Practical for milling, drilling and reaming applications
• Allows tool-size changes by selecting the appropriate ER collet
• Suitable for precision-oriented machining setups
• Supports organized CNC tool management
• Useful for production and tool-room machining
• Compatible with the wider HSK tooling system

Why Use an HSK ER Collet Chuck?

An HSK ER Collet Chuck combines the HSK spindle interface with the versatility of an ER collet system. Instead of requiring a separate holder for every compatible tool diameter, the ER system allows the holder to accommodate different shank sizes within the permitted range by changing the collet.

This makes the holder useful for CNC machining centers where multiple cutters are used across different operations. An HSK63A ER32 holder, for example, can be paired with compatible ER32 collets for tools within the specified clamping range. Industry specifications commonly show ER32 configurations with approximately 2–20 mm clamping ranges, although the exact range depends on the collet itself.

The HSK form and size must match the machine spindle. HSK63A, HSK63E and HSK63F are not interchangeable simply because they share the number 63, so the complete HSK specification should be checked before purchase.

HSK ER Collet Chuck vs HSK Side Lock Holder

HSK ER Collet Chuck: Uses an ER collet and nut to grip compatible cylindrical-shank tools and offers flexibility across different tool diameters.

HSK Side Lock Holder: Uses a side-lock mechanism for compatible tools with the required flat/Weldon-style shank.

The cutting-tool shank should determine which holder is appropriate.

HSK ER Collet Chuck vs HSK Drill Chuck

HSK ER Collet Chuck: Flexible tool holding through interchangeable ER collets.

HSK Drill Chuck (APU): Designed specifically around a chuck-style drilling-tool clamping system.

For workshops using multiple cylindrical-shank tools, an ER system can provide greater holder versatility; dedicated drilling applications may call for an appropriate drill chuck.

How to Select the Correct HSK ER Collet Chuck

Before ordering, check:

1. HSK form — HSK-A, HSK-E, HSK-F or the required machine-specific form.
2. HSK size — such as HSK63A or HSK100A.
3. ER collet size — ER16, ER20, ER25, ER32 or ER40.
4. Tool shank diameter — match the tool to the selected ER collet.
5. Holder length — select according to machine access and tool projection.
6. Machining operation — milling, drilling, reaming, profiling or finishing.
7. Machine compatibility — verify the complete HSK specification before ordering.

FAQs

1. What is an HSK ER collet chuck?

An HSK ER collet chuck is a CNC tool holder that combines an HSK spindle connection with an ER collet system for gripping compatible cylindrical-shank cutting tools.

2. What HSK sizes are available for ER collet chucks?

Common HSK-A ER configurations include HSK63A and HSK100A, with different ER sizes available depending on the holder model.

3. Which ER collets can be used with an HSK ER holder?

Depending on the holder, common ER configurations include ER16, ER20, ER25, ER32 and ER40. The ER collet must match the holder and the cutting-tool shank diameter.

4. Can an HSK ER collet chuck hold end mills?

Yes. An HSK ER collet chuck can hold compatible cylindrical-shank end mills when the tool diameter is within the permitted clamping range of the selected ER collet.

5. How do I choose between HSK63A and HSK100A?

The HSK size must match the spindle interface of the CNC machine. HSK63A and HSK100A are different sizes and should not be selected interchangeably. The HSK form, ER size, tool diameter and holder length should also be confirmed.

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