garant master chuck

GARANT Master Chuck hydraulic chuck

Advantages and disadvantages of conventional hydraulic chucks

The advantages of a conventional hydraulic chuck are plain to see. In practice, however, the problems of clamping with conventional chucks are also well-known –
high temperatures during machining can cause the oil to expand in the chambers and the bushing to burst at the soldering point, for example. In addition, not all chucks are suitable for all applications – partly because the holding forces are insufficient and partly because it is impossible to access hard-to-reach areas.

Hydraulic chuck: function and design

How does a hydraulic chuck work?

The pressure pin is moved via an actuating screw, which generates pressure in the oil chambers. The generated pressure compresses the pressure sleeve in the elastic area and thus clamps the respective tool in a manner that creates a frictional connection.

Advantages of a conventional hydraulic chuck

  • Longer tool life
    Thanks to outstanding vibration damping.
  • Perfect results and maximum precision
    Both in terms of the concentricity and the repetition accuracy.
  • Easy to use – just one screw required
    No special additional equipment/accessories are needed.
  • Incredibly versatile due to reducing adapters
    All common tools can be held.

Disadvantages of a conventional hydraulic chuck

  • Insufficient clamping force
    Particularly for heavy-duty machining.
  • Interference contour
    Hard-to-reach areas are not reached.
  • Temperature
    Possible failure due to increase in temperature – especially in continuous operation.

The new GARANT Master Chuck hydraulic chucks

When developing the new GARANT Master Chuck, we took the well-known merits of a hydraulic chuck a step further and added several more compelling, advantageous features.
This means you can take tool clamping work in your Production department to the next level and achieve the best results and maximum repetition accuracy.

With the new GARANT Master Chuck, we have significantly expanded the possible application areas for hydraulic clamping technology.

Highlights include the changed design of the chambers inside and the resulting clearly improved properties – a clever solution that maximises power and precision.

Would you like to find out more? Simply contact us.
Arrange a consultation now

The GARANT Master Chuck is available in 2 versions and offers unbeatable advantages

FULL SPEED AHEAD:

Master Chuck Performance


Ideal for heavy-duty machining
Thanks to the highest possible holding forces

master chuck performance slim

ACCESS ALL AREAS:

Master Chuck Slim

Perfect access
Thanks to slim outer contour

Master Chuck Performance: Maximum performance. Extra-long tool life.

  • Even easier to use
    Thanks to the new position of the clamping screw.
  • Higher temperature resistance
    The new, patented bushing technology reduces the oil volume, improving stability and safety when subject to high temperature influences.
  • Improved application/distribution of the forces
    Thanks to new, patented bushing technology.
  • Significantly less manual tightening force required
    Thanks to special mechanics, less torque is required whilst simultaneously achieving the highest possible clamping force.
  • Longer tool life
    Up to 10x more clamping cycles than conventional chucks

Changes in torque between a shrink-fit chuck, hydraulic chuck and GARANT Master Chuck under the influence of temperature (using example of ⌀ 20 mm).
Blue: GARANT Master Chuck | Grey: Hydraulic chuck | Red: Shrink-fit chuck

Master Chuck Slim: Ideal shape. For the best access.

  • Very easy to use
    No shrink-fit unit required.
  • Better surface quality
    As vibrations are minimal.
  • Quicker machining
  • Higher clamping force
    Compared to conventional hydraulic chucks.
  • Protect your employees
    No injuries caused by the shrink process.
  • Higher temperature resistance
    Thanks to new, patented bushing technology.

The GARANT Master Chuck Slim (top) has the same outer contour as the standard shrink-fit chuck (bottom), ensuring the best possible access.

Find the right hydraulic chuck for you

Webinar on hydraulic chucks

White paper on hydraulic chucks and other chuck alternatives:

Download now!

Simply the perfect choice

We have put together a brief overview of the various tool chucks and their special features. Even just a quick glance at the table shows
that in terms of the application range, you can’t go wrong with the GARANT Master Chuck. And the clamping force can more than keep up!

Fields of application

Applications / ChucksStandard hydraulic chuckHT hydraulic chuckSlim hydraulic chuck Master Chuck Slim Master Chuck Performance
Drilling
Deep hole drilling
Milling, roughing
Milling, finishing
3D finishing
Reaming
Countersinking

Holding torques

Diameter (mm)Master Chuck PerformanceStandard Hydro ChuckHT hydraulic chuckStandard shrink-fit chuck
624 Nm20 Nm 24 Nm
847 Nm35 Nm 45 Nm
1085 Nm50 Nm 82 Nm
12130 Nm90 Nm130 Nm145 Nm
14240 Nm120 Nm 190 Nm
16350 Nm170 Nm 200 Nm
18430 Nm240 Nm 290 Nm
20520 Nm330 Nm520 Nm450 Nm
25 400 Nm 530 Nm
32 650 Nm900 Nm700 Nm
Tested in continuous operation up to: lm 1.23431.5 x D slot milled from solid0.5 x D slot milled from solid1 x D slot milled from solid1 x D slot milled from solid

My production. My system. From GARANT.

A crucial factor in your production workflows is how the various components interact. A balanced system of high-quality tools and accessories can make a key difference. We help you achieve the perfect result with the GARANT system concepts, expert advice and the extensive Hoffmann Group portfolio – so you’re guaranteed to take no risk.

Machine tools

What does a machine tool have to do to achieve perfect results?

  • It must have the required stability.
  • It requires a suitable spindle in terms of speed, balancing quality and bearing.
  • Performance parameters (speed, feed rate, etc.)
  • Production options (e.g. 5-axis machining)

Accessories

  • Pull stud
    The interface between the spindle and the arbor (e.g. for an SK adapter). The pull stud should be suitable for your machining job.
  • Reducing adapters
    Not only make the hydraulic chuck more versatile, they also increase the clamping forces on the tool.

Tool chuck

The arbor has the task of clamping the tool and absorbing the forces. The following factors are important when selecting tool clamping devices:

  • Concentricity
  • Repetition accuracy
  • Balancing quality
  • Process reliability
  • Flexibility

Workpiece clamping

As the workpiece clamping device is what connects the workpiece and the machine, you should not make any compromises here. Observe the following parameters:

  • Flexibility
  • Automation capability
  • Clamping force
  • Repetition accuracy
  • Accessibility
  • Handling

Machining technology

The effectiveness of your machining tool makes all the difference to how productive and reliable your work is. When selecting the right machining tool, observe these criteria in particular:

  • What material is being machined?
  • What cooling method is being used?
  • Which machining strategy did you choose?

Brochure

GARANT Master Chuck hydraulic chuck

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Do you need advice?

Our experts will be delighted to advise you on the new GARANT Master Chuck or
will work with you to optimise your production process.

Arrange a consultation now

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