Cargo Carbide HSK Side Lock Holder is designed for secure mounting of Weldon-shank cutting tools on CNC machining centers equipped with a compatible HSK spindle interface. The side-lock design uses a clamping screw against the tool's Weldon flat, providing a direct mechanical method for securing suitable cylindrical-shank milling tools.

This holder is particularly useful when the machining setup requires a positive side-locking connection rather than an ER collet system. Weldon side-lock holders are commonly specified for tools conforming to Weldon shank standards such as DIN 1835 Form B and DIN 6535 Form HB.

The HSK interface provides the machine-side connection, while the tool-side bore and locking screw are selected according to the shank diameter of the cutter. This makes the holder suitable for compatible solid carbide end mills, milling cutters and other Weldon-shank tools.

For CNC production environments, an HSK side lock holder can be useful where repeatable tool mounting, straightforward tool changes and a positive connection to the cutter are required. It can be used across general engineering, automotive machining, die and mould work, component production and other milling applications.

Different HSK forms and sizes should not be treated as interchangeable. The machine spindle's HSK form, nominal size, tool diameter and required gauge length should be confirmed before selecting the holder.

Product Specifications

HSK Side Lock Holder Applications

• CNC milling operations
• End mill holding
• Weldon-shank carbide end mills
• Rough milling
• Slot milling
• Shoulder milling
• Pocket milling
• Profile machining
• Die and mould machining
• Automotive component machining
• General engineering components
• Production machining
• CNC machining centers
• VMC tooling applications

Key Benefits

1. Positive Side-Lock Clamping

The side-lock mechanism engages the Weldon flat of a compatible tool, creating a positive mechanical connection between holder and cutter.

2. Designed for Weldon-Shank Tools

The holder is intended for suitable tools with Weldon-style flats rather than relying on an ER collet for tool retention.

3. Direct HSK Machine Interface

The HSK connection allows the holder to be used on a compatible HSK-equipped CNC machining center.

4. Suitable for Milling Operations

It can be paired with suitable end mills and milling tools for roughing, slotting, profiling and other machining operations.

5. Straightforward Tool Setup

Side-lock construction provides a simple method of installing and securing compatible Weldon-shank tools.

6. Available Across Different Tool Diameters

Industry HSK-A side-lock ranges demonstrate configurations for several tool diameters, including smaller and larger Weldon shanks.

7. Useful for Production Tooling

A dedicated Weldon holder can be useful in production environments where specific tool sizes are repeatedly used and a consistent tool-holding arrangement is required.

Why Use an HSK Side Lock Holder?

An HSK Side Lock Holder is useful when the selected cutting tool has a Weldon flat and the machining setup calls for direct side locking.

Compared with an HSK ER Collet Chuck, the side-lock holder is more specifically matched to Weldon-shank tools. The ER system offers broader shank-size flexibility through interchangeable collets, while the side-lock holder provides a dedicated bore and locking screw arrangement for a particular tool diameter.

HSK Side Lock Holder vs HSK ER Collet Chuck

HSK Side Lock Holder vs HSK Face Mill Arbor

How to Select the Correct HSK Side Lock Holder

Before ordering an HSK Side Lock Holder, check these points:

1. HSK Form
Confirm whether the machine uses HSK-A, HSK-E, HSK-F or another HSK form.

2. HSK Size
Verify the spindle size, such as HSK63A or HSK100A.

3. Tool Shank Diameter
The holder bore must match the diameter of the Weldon-shank tool.

4. Weldon Flat Position
Make sure the cutting tool has a suitable Weldon flat for the side-lock screw.

5. Gauge Length
Select the holder length according to the required tool projection and machining accessibility.

6. Tool Diameter and Cutter Type
Confirm the actual end mill or milling cutter dimensions before selecting the holder.

7. Coolant Arrangement
If through-tool coolant is required, confirm that the selected holder configuration supports the required coolant arrangement.

 FAQs

1. What is an HSK Side Lock Holder?

An HSK Side Lock Holder is a CNC tool holder designed to mount compatible Weldon-shank cutting tools on a machining center with an HSK spindle interface. A side screw engages the tool's Weldon flat to secure it in the holder.

2. What type of tool is used in an HSK Side Lock Holder?

It is primarily used with compatible Weldon-shank milling tools, including suitable solid carbide end mills and other cylindrical tools featuring the required Weldon flat. Weldon holders are commonly specified for DIN 1835 Form B and DIN 6535 Form HB tools.

3. What is the difference between an HSK Side Lock Holder and an HSK ER Collet Chuck?

The side-lock holder secures a compatible Weldon tool using a locking screw, while an HSK ER Collet Chuck uses an ER collet and nut to grip a cylindrical shank. The correct choice depends on the tool shank and machining application.

4. Are HSK63A and HSK100A Side Lock Holders interchangeable?

No. The HSK size must match the machine spindle interface. HSK63A and HSK100A are different spindle/tool-holder sizes, so the correct configuration should be selected according to the CNC machine.

5. How do I choose an HSK Side Lock Holder for my end mill?

Check the machine's HSK form and size, the end mill's shank diameter and Weldon flat, required gauge length and coolant requirements. The holder bore should correspond to the cutting tool's shank diameter.

HSK Side Lock Holder, HSK Sidelock Holder, HSK Weldon Holder, HSK End Mill Holder, HSK CNC Tool Holder, HSK63A Side Lock Holder, HSK100A Side Lock Holder, HSK Weldon End Mill Holder, HSK Side Lock Tool Holder, CNC Weldon Holder, HSK Milling Tool Holder, HSK Tool Holder for End Mill