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expandable chuck / milling / hydraulic / high-precision
expandable chuck
AK182

- Meets all the requirements for a powerful, high-precision adaptor system - Up to 40% longer tool life - High level of concentricity and vibration damping, particularly for milling - Enables tool change in seconds without ...

expandable chuck / milling
expandable chuck
FORTIS

Schunk's Fortis is an expansion arbor that offer a high run-out precision and repeatability which is less than .003mm with high clamping forces that ensure the protection grip of the workpiece. It also features stiffened ...

clamp chuck / expandable / pneumatic / precision
clamp chuck
PM series

- Pneumatical clamping / release - For use on measuring machines and precision engineering Specifications - For collet holders ER32 - Clamping range Ø 1-22 mm - Locking pressure pneumatically adjustable - Installable ...

expandable chuck / for clamping sleeve
expandable chuck
SP

Diameter: 5 mm - 400 mm

... System, the clamping sleeves are compressed in the direction of the force by introducing an axial force, which causes them to expand radially. This simultaneously eliminates the clearance between the clamping sleeve ...

expandable chuck / milling
expandable chuck
SZ

Diameter: 5 mm - 400 mm

By introducing an axial force, a split collet is expanded radially over a taper. This coincides with an axial movement of the collet. The workpiece is clamped. The SZ System is used when the clamping basis of the workpiece ...

expandable chuck / turning / automatic clamping / lathe
expandable chuck
SG

Diameter: 6 mm - 300 mm

... body. By introducing an axial force, the clamping bush moves in the direction of the force. This causes the clamping bush to expand radially, due to the angle of the threads. The workpiece is clamped. The transferable ...

expandable chuck / milling / hydraulic
expandable chuck
SH

Diameter: 5 mm - 300 mm

... with hydraulic fluid. By introducing force using a piston, pressure accumulates in the system. This widens the thin-walled expansion zone radially and effects workpiece clamping. The SH System is particularly suited ...

pull-back chuck / expandable / for machining / workpiece
pull-back chuck
BKDF Series | Ø serrage serrage entre 11,9 mm et 129,6 mm

Diameter: 70 mm - 140 mm

This product is often regarded as a complete clamping fixture, offering support for various applications in the industry. In addition to the support for clamping diameters between 11.9 and 129.6 mm, the high true running accuracy is ...

expandable chuck / for machining / for clamping sleeve / flange-mounted
expandable chuck
KFS / MFS series

Roehm's KFS and MFS series of cartridge mandrels is generally used for applications that involve turning, cutting, toothcutting, measuring, balancing, and grinding. Models of the series sport compact designs, stabilized clamping capabilities, ...

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RÖHM
expandable chuck / for machining / manually-controlled
expandable chuck
MZS

The MZS is suitable for use in turning, grinding, cutting, and measuring operations. The unit provides stable clamping, through the axial draw-in. Also, the device is utilized for internal clamping. The equipment provides maximum ...

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RÖHM
expandable chuck / for machining / automatic clamping
expandable chuck
KFB

The KFB Series of Expandable Chuck, manufactured by RÖHM, is specifically designed for turning, milling, grinding, and measuring applications. This device is mainly used for a compact clamping with a ...

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RÖHM
expandable chuck / for machining / manual / manually-controlled
expandable chuck
MZB

The MZB Series of Expander/Automatic Control, manufactured by ROHM, is specifically designed for turning, grinding, and measuring applications. This device is mainly used for a compact clamping with a diameter of 5.5 ...

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RÖHM
expandable chuck / for machining / for clamping sleeve / manually-controlled
expandable chuck
MZE

Diameter: 18 mm - 230 mm

The MZE model provides internal clamping on grinding, and easy turning operations. It can also be utilized for measuring operations. The device functions provides precision through the guiding sleeves, on the clamping mandrel. It ...

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RÖHM
expandable chuck / for machining
expandable chuck
BKDF series

The BKDF is manufactured by SIAM Ringspann. It is a taper collet flange mandrel BKDF, that works as a complete clamping fixture. Features of the BKDF includes clamping diameter range from 11,9 mm to 129,6 mm, and running accuracy of ...

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RINGSPANN
expandable chuck / for machining
expandable chuck
HKDF series

Diameter: 9 mm - 175 mm

The HKDF unit is a tapered sleeve flange mandrel that is ideally utilized by applications that dea with clamping diameters ranging from 9 to 175 mm. It is capable of providijng operators with a running accuracy that does not exceed 0.01. ...

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RINGSPANN
expandable chuck / for machining
expandable chuck
KFDF series

Flat Element Flange Mandrels KFDF as Complete Clamping Fixture Features For clamping diameters from 120 mm to 325 mm High true running accuracy ≤ 0,01 mm Permissible workpiece tolerance up to IT11 Very short clamping fixture ...

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RINGSPANN
expandable chuck / for machining
expandable chuck
KUD series

Diameter: 70 mm - 200 mm

The Precision Clamping Mandrel has 0.01mm and high true running accuracy, IT11 permissible work piece tolerance, very short clamping fixture length, less than 2mm rubberized slots in the Short Element for blind bores, simple configuration, ...

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RINGSPANN
expandable chuck / for machining
expandable chuck
KBD series

The Expanding KBD is manufactured by Ringspan. The product is integrated wtih rubberized slots in the disc element, and features the possibility of hand clamping is optional. This unit's clamping diameter ranges from ...

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RINGSPANN
expandable chuck / for machining / 6-jaw
expandable chuck
MANDO T211

Diameter: 20 mm - 120 mm
Rotational speed: 3200 rpm - 7000 rpm
Gripping force: 42 kN - 170 kN

With draw bolt. Advantages Form-compensating segmented clamping bushings upon request Clamping range from Ø 20 – 120 mm with only 5 mandrel sizes

expandable chuck / for machining / 3-jaw
expandable chuck
MANDO T212

Diameter: 8 mm - 100 mm
Rotational speed: 4000 rpm - 7000 rpm
Gripping force: 42 kN - 170 kN

Without draw bolt. Advantages Clamping without draw bolt, consequently ideal for blind bores Clamping range from Ø 8 – 100 mm with only 8 mandrel sizes

expandable chuck / for machining / 6-jaw / workpiece
expandable chuck
MANDO T812

Rotational speed: 6000 rpm - 7000 rpm
Gripping force: 42 kN - 150 kN
Length: 136 mm - 193 mm

Without draw bolt. Advantages Only radial clamping, no pull-back against workpiece end-stop – ideal for pick-off from the main spindle Clamping without draw bolt, consequently ideal for blind bores Clamping range ...

expandable chuck / for machining
expandable chuck

To balance tools with cylindrical bore Precise centrically clamping for highest repeatability Fine balanced to < 1 gmm Individual useable

expandable chuck / milling
expandable chuck
FORTIS

The Fortis is an expansion arbor manufactured by Schunk. Its key features include a superior run-out precision, a repeatability of less than 0.003mm, superior clamping forces that ensure fixed workpiece grip, a robust ...

expandable chuck / for machining / hydraulic
expandable chuck

... consisting of spindle, chuck and tool. For this MAPAL is now presenting its new alignable chuck based on the proven hydraulic expansion technology with which the errors of the overall ...

expandable chuck / turning / hydraulic
expandable chuck

... pyramid mandrel (expand when pushed), reverse pyramid mandrels (expand when pulled) offer the following advantages. Compressive stress is applied on segments instead of tensile stress, so the system ...

expandable chuck / for machining / 6-jaw
expandable chuck
T-EP series

Diameter: 8 mm - 235 mm

Use: turning, grinding, balancing and inspection operations High degree of expansibility 1.5 to 5 mm depending on the diameter of the sleeve Possibility to clamp worpieces with diameters ranging from 8 to 235 mm Clamping takes place ...

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TOBLER
expandable chuck / for machining / 4-jaw
expandable chuck
T-EPN series

Diameter: 5.5 mm - 79.7 mm

... The workpiece is clamped by tightening the sleeve with the knurled ring. The movement of the sleeve up the tapered arbor expands the sleeve, ensuring that the workpiece is clamped tightly. The movement of the sleeve ...

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TOBLER
expandable chuck / milling / 4-jaw
expandable chuck

Hardinge force-limiting step chuck takes the headache out of thin-wall turning. Maintain inside and outside concentricity of thin-wall parts in a fail-safe process while eliminating the nuisance of manually tweaking ...

expandable chuck / milling
expandable chuck
EM-A

Diameter: 14.7 mm - 129.7 mm

Hand or Power Operated Expanding Mandrels Size Range: 14.7mm - 129.7 mm Large Expandability (1 - 2mm, depending on size) Flange Mounting Very Rigid Design

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SMW AUTOBLOK
expandable chuck / milling / automatic clamping
expandable chuck
EM-S

Diameter: 18 mm - 105 mm

Power operated segment sleeve mandrels Size Range: 18mm - 105mm For turning grinding and milling Large expansibility Very Rigid Design Case hardened / wear resistant EM-S are power operated segment sleeve mandrels that are deal for volume ...

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SMW AUTOBLOK
expandable chuck / turning / 4-jaw / Morse taper shank
expandable chuck
QUADRO®

Diameter: 100 mm
Length: 83.5 mm - 128 mm

The KSD cone expanding mandrels are ingeniously designed components, geared to deliver excellent clamping results for compact work-pieces. The clamping is accomplished internally with maximum clamping size being 100 ...

expandable chuck / turning / 4-jaw
expandable chuck

Diameter: 18 mm - 80 mm
Rotational speed: 5000 rpm
Length: 122 mm - 179 mm

The cone expanding mandrel CenterGrip is designed without a draw bolt making it possible to clamp the whole length of blind holes. The 6-segmented sleeves (CG30 = 3 segments) depends on the reliable Rubber-Flex® vulcanising ...

expandable chuck / for machining / Morse taper shank
expandable chuck

expandable chuck / milling / hydraulic
expandable chuck
Hydrocentrics

expandable chuck / drilling / hydraulic
expandable chuck
SDH

Diameter: 100 mm

... the centring force, one of the secrets of the low deformation hydraulic STIEFELMAYER clamping principle. As with other clamping chuck types, the segment clamping jaws are controlled separately, resulting in as little ...

expandable chuck / turning / 3-jaw
expandable chuck

Segment clamping mandrels have a relatively large clamping stroke, unlike slide bush clamping mandrels, for example. They can be used universally for centring or clamping. We have already realised clamping mandrels for many different ...

expandable chuck / for machining / for clamping sleeve
expandable chuck

Internal clamping sleeves with double taper are suited to internal clamping of pre-machined parts. Because these have tapers and slots at both ends, the clamping sleeve is able to open in various different ways and securely hold workpieces ...

How to choose this product

expandable-chuck

Expanding mandrels are tool components used to grip objects by their inner diameter. They hold workpieces for machining applications such as turning, milling and grinding.

Applications

Expanding mandrels are most often used on lathes for turning operations. They can also hold parts for measuring purposes, such as checking for concentricity. They also can hold multiple parts simultaneously, making them preferable to lathe chucks for certain turning operations.

Technologies

The expanding mandrel holds a hollow workpiece from within to facilitate work on its exterior surface. A screw or piston gradually expands the tapered mandrel until it grips the piece firmly.

How to choose

Be sure to determine the approximate diameter of the workpiece when selecting an expanding mandrel.

Advantages

- Concentricity