Heat Shrink Toolholder – Free Mounting with Insert Tool Purchase!

Heat Shrink Chuck

Heat Shrink Chuck

The Heat Shrink Tool Holder offers some substantial benefits when compared to standard HSK-63F tool holders. A Heat Shrink chuck creates a more uniform, rigid connection between the CNC machine and the tool resulting in less vibration and a noticeably faster and smoother cut.

Here are some of the major benefits:

– One piece tool holder with no additional parts (nut/collets)

– Extremely tight tolerance 0.003mm & balancing properties

– High clamping force (~10,000 lbs) and rigidity

– improved tolerance equates to improved finish quality and longer tool life

– Slim design, ideal for 5-axis machines and tight routing conditions

heat shrink tool chuck expanding

Heat Shrink Chuck Expanding

Heat Shrink Chuck Cooling

Heat Shrink Chuck Cooling

Wondering how shrink fit tool holders work? The receiving end of the tool holder is heated with an electric heating induction machine.

This causes the steel body  to expand, allowing for the insertion of the tool shank. Once the tool shank has been inserted the heating element is turned off allowing the steel to cool and “shrink” around the shank of the tool. To remove the tool, just repeat the process.

Because of the need for an induction heating element to change tools, many companies will find this system not ideal for using solid carbide tools. However, we offer this service for FREE when you purchase a Heat Shrink tool holder with any of our standard or custom insert tools.

This system is ideal for longer life tools like PCD and insert tools due to the fact you do not have to remove the tool from the tool holder to change out the knives.  With PCD tooling, if you utilize our sharpening service you can send the tool in with tool holder intact, we will take care of the rest.

 Are you interested in maximizing the precision in your shop? Contact us for more information on the Heat Shrink tool holders.

Precision CNC Tool Holder Options

HSK Collet Chuck, Collet and Router Bit

HSK Collet Chuck, Collet and Router Bit

Standard HSK collet chucks are currently the most common in use in the woodworking industry. They are relatively inexpensive, and highly flexible due to the wide range of collet sizes that are available and easy to interchange.   While HSK style collet chucks are a good choice for most applications, the multiple parts involved in tool clamping (holder, collet and nut). this style chuck does not provide the tightest possible tolerances or clamping pressure. This is one of the shortcomings that has made thermal heat-shrink tool holders popular. 

Thermal (Heat Shrink) Collet Chuck

Thermal (Heat Shrink) Collet Chuck

Heat-shrink tool chucks have been gaining popularity due to the very tight tolerances (0.003mm / .00012″) and extreme clamping pressures used to hold tools in place.  They are balanced to 30.000 rpm.   These chucks offer a slim, light weight design with very high clamping power and accuracy. This choice of tool holder is ideal for use with insert tooling.  When using solid carbide or PCD (Polycrystalline Diamond) tooling, tool changes must be completed by the use of either an in-house heating element or sent out to an existing tool supplier.  Heat shrink chucks have their specific advantages, but they also have limitations.  Not all  diameters are readily available, the cost is higher than standard collet chucks and the additional cost of a heating element for in-house flexibility, without depending on a third party to remove the tool from the holder, can be considerable.

Hydro Chuck

Hydro Chuck

 Hydraulic tool holders are an often overlooked option to thermal tool holders with the same accuracy and more flexibility.  The hydraulic tool holder works by using fluid to compress an internal membrane within the tool holder. The hydraulic fluid delivers uniform pressure around the membrane allowing it to compress equally around the periphery of the cutting tool (shank) providing an even hold on the tool shank. The hydraulic fluid is activated by the use of a T-handle wrench to turn and activate a pressure screw. To release the pressure and cutting tool from the tool holder, simply turn the pressure screw counterclockwise. In addition to the quick set and release feature, here are a few additional benefits and features:

  •  Precise tool clamping tolerance of 0.00012”
  • Transmission of high torque or clamping pressure
  • Quick tool set up and removal
  • No Heating element or torque wrench required
  • Hydraulic fluid provides vibration absorbing features
  • Flexible with the availability of collet reducers
  • Increased tool performance (finish quality & tool life)

 With clamping tolerances that are comparable to heat shrink tool holders, tool changes are simple and quick. In addition, no heating element is required for tool changes. And, like standard collet tool holders, hydraulic tool holders provide the ability to use different shank tools by the use of high tolerance (collet) reducers.

The ease of use, high clamping tolerances and torque can and will benefit your bottom line by extending tool performance and improving finish output.

For additional information, please contact us!

Precision ThermoTec Heat Shrink Tool Holder

The ThermoTec heat shrink chucks are precision balanced to 30,000RPM with a runout tolerance of .003mm (0.00012″) making them great for high torque/high speed machining. In heat shrink chucks,  collets and nuts are not used between the tool shank and tool holder creating a more evenly distributed clamping force on the shank.

ThermoTec Tool Holder

ThermoTec Tool Holder

The Thermotec is best suited as a dedicated high-precision tool holder for fully cylindrical shank tools made of solid carbide or precision steel rods. Heat shrink tool holders are designed with internal bores that are slightly smaller than the cutting tool shank. When extreme induction heat (from the heat shrink machine) is applied the tool holder bore expands allowing the shank to slip inside and as the tool cools, the bore shrinks around the shank with extreme clamping force. The Thermotec will improve a surface finish due to the exact concentricity of the cutting tool during use.  We recommend ThermoTec heat shrink chucks for use with all insert router tooling, since the tool body can remain in the chuck indefinitely, as compared to a PCD or solid carbide tool which needs to be removed from the tool holder when being sharpened.

We provide insert router tooling that is already mounted on the Thermotec at no additional cost, contact us if you’re interested.  This allows you to reap the benefits of a highly accurate tool system without the need for any additional investment in an induction unit.

HSK63-F Hydro Chuck for CNC Machines

6390

HS63F hydro chuck by GUHDO

While heat-shrink and power shrink tool holders improve accuracy and increase tool life, the investment in additional accessories required to mount and remove the tool from the holder often makes it cost prohibitive for the smaller shop. A great alternative is an HSK hydro clamping chuck. Precision balanced to 25,000 rpm, the tempered and ground tool holder will provide higher clamping precision than a standard collet and nut are able to since it grips the tool shank absolutely concentrically over the full length of the shaft.

The use of a hydro clamping chuck will improve tool life (less compounded tolerances from collet and nut) as well as the surface finish.  The chuck features a hexagon screw that, when installing a tool, is tightened to the “stop” point. The clamping piston forces the hydraulic medium in the expansion chamber to increase pressure, which first centers the tool shaft and then tightens it securely and accurately for a very solid and secure connection.  They are great choices for cutting composites and other materials that require a precision machining environment.