HSK Shanks and Receivers: A Primer

HSK Shanks and Receivers – Introduction

Speed, accuracy, precision, and faster tool changes are the benchmark and differentiating factor in the manufacturing world. Modern manufacturers are always looking for ways of improving their products in the shortest possible time. HSK shanks and receivers are tools with which these manufacturers can do just that.

In order to outperform your competitor, you’ve got to have the right set of tools. Tools that provide the fastest removal rates, rigidity, and accuracy. Tools with high precision and rigidity: The HSK tooling technology.

HSK is an acronym for Hollow Taper Shank.

image of hsk shanks

HSK shanks and receivers have the purpose of bringing high rigidity, accuracy, and greater stability in high-speed machining.

In the quest to fill in the gap for top-notch tooling system, a non-proprietary model was introduced in Germany. These HSK shanks and receivers have become more popular across the US in the last few years.

With its increasing popularity across the US market coupled with an outstanding tooling system, productions were reversed and manufacturers found a tool holder with higher standards for their future projects.

One of the key differentiating factors in HSK tools is in the degree of tolerance. The tolerance between the taper and the spindle receiver is below two microns (.002 mm). These tools supports Automated Tool Change (ATC).
Different manufacturers produce HSK shanks and receivers and every type serves a specific need.

Types of HSK Shanks and Receivers

There are six types of HSK shanks and they’re available in 35 sizes. Spindle receivers are also designed for each shank type. Your choice of shanks is dependent on the spindle speed and torque.

HSK shanks and receivers

Types of HSK Shanks

Description of Types of HSK Shanks and Receivers

  • A: for automatic tool-changing for applications operating with moderate to high revolution and those on a high torque.
    Normally, these applications should have a revolution speed above 12 rpm and below 25,000 rpm.
  • B: for automatic tool changing for applications operating with high torque and also on a moderate to high spindle speed.
  • C: for manual tool-changing for applications operating with moderate torque and on a moderate to high revolution speed.
  • D: for manual tool-changing for applications operating on high torque with moderate to high revolution speed.
  • E and F: to support the Automated Tool Change (ATC) technology and for applications operating with low torque and extremely high revolution speed.

Why Should You Use HSK Shanks and Receivers?

Over the years, there has been a dramatic change in the use of tools in the manufacturing world. End users, on the other hand, are searching for reliable, easy, and fast tools to help them finish their projects with the highest level of precision and accuracy.

HSK tools not only make your work faster, they also make it easier without wasting time during the coupling of the basic component parts of the system.

Unlike other conventional tool holders, like BT, NMTB, and CAT V-flange, which are largely for high-speed machining, HSK tool holders increase grip and rigidity as the revolution speed increases. The shorter taper acts as a safety measure to stop pulling out the holder from the spindle at high revolution speed.

HSK tools reduce the cycle time to facilitate faster operations while other conventional tools are relatively slower.

A lightweight structure coupled with the stiffer and precise operation styles make HSK tools the best tools for the future.
Generally, HSK tool holders are becoming increasingly important for any high-speed machining operations. The aerospace and automotive industries predominantly use them.

Manufacturers and end users looking for accurate, lightweight, and easy-to-use tool holders can utilize the amazing value in HSK shanks and receivers.

Tool Holders 101: Cat, BT, HSK and More Info

Tool holders (toolholders) are the main facet that connects the machine tool to the tooling.. Their mounting styles are all different according to the interface. Their mounts can range from HSK tool holders, VDI mount, or the dated R8 styles.

All types of tool holders consist of 3 unique parts: the collet pocket, the flange, and the taper. There is static tooling which is not powered and there is live (driven) tooling which is not powered.

  • Taper: The taper part of a toolholder is cone-shaped. It is the part that is connected to the spindle when the tool is changed.
  • Flange: The flange is connected and attached to the automatic changer which moves the spindle and tool changer.
  • Collet Pocket: The collet pocket is fastened to the different collet nuts and is the region where the insert of the collet is secured.

A variety of tool holders surround the cutting tool (machine tool) so it remains intact in one position – while many other machining tools enable maximized clearance for small to large sizes.

Tool Holder Types

There are a wide variety of tool-holder types, they are indexed in the industrial machine tooling databases as such:

  • Machine arbors: These are driven by motors an are responsible for the turning mechanism of machinery tools.
  • Side cutter holders: These toolholder’s purpose is to hold the cutting tools in place.
  • Saw blade holders: These holders keep saw-blades in place.
  • Boring heads: They hold boring bars in places as well as other types of tool holders.
  • Tapping chucks: These keep operations in threading running smooth and also keep tapping tools in place.
  • Blank adapters: Depending on tasks in machining these are customizable for various applications.
  • End mill holders: Essentially for milling, these holders keep milling tools in place.
  • Outer diameter (OD) and inner diameter (ID): These are universal holders that are interchangeable with many types of tools for cutting.
  • Collet chucks: The variety of collet chucks work to hold different machinery tooling in place.
  • Milling or drilling chucks: Specifically designed to hold the placement for tools associated with drilling and million operations.

When you but tool holders, you should consider the exact mounting style that you need..

R8 is an old school mount developed by Bridgeport back in 1965. This part is obsolete and rarely used in modern machine tooling.

 The Morse taper (MT)  is manufactured in 4 different sizes. Every size differential contains a unique taper for ease of transitional changes in tool fittings and machinery tool use.

National Machine Tool Builders (NMTB) defined

The NMTB taper  type of toolholder was defined by (NMBT) National Machine Tool Builders. It is used in all types of milling CNC machinery and machines. The basic measurement requires a draw bar and stands at 3.5 inches per foot.

The CAT®  by Caterpillar®developed  customized mount style, is mainly referred to the  V-flange. It is the very basic tool for Cat CNC machines. All tool-holders built and manufactured by Cat consist of a numerical ID associated with taper size. (examples CAT-30, CAT-40, CAT-50 and CAT-60.)

Similar to the popular Cat tooling options is also BT tool holders. BT holders differ from cat because they are all symmetric and balanced within the rotational axis. BT toolholders contain the same standards of taper measures as the NMBT stud threads that use metrics to move.

Hollow shank tooling (HSK)  is a new innovation in tooling that is now used and implemented with various types of HSM machines. It is manufactured for quick changes in tooling and also comes in straight shank formats and dovetail formatting in machinery.


Tool Holders: Features and Applications

Tool holders features and application widely vary from those who have open coolant flow through the flange or are openly fed by components. Such models, brands, and makes (i.e.. Cat tool holders, BT tool holders, and HSK tool holders) are every bit (no pun intended) of the best examples for this instance. Every one varies in application and interchangeable abilities to adapt to size changes from small to large with the most gap of clearance possible. It is important to understand that every tool holder manufactured is tailored and customized for its specific purpose, task, and job. This makes a vast difference in operational and performance efficiency for use.

Go to Top