OVEKAV / OVARZV
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Compensating Chuck – Retractable OVEKAV / OVARZV

COMPENSATING CHUCK RETRACTABLE The OVEKAV / OVARZV retractable compensating chucks made by SwissChuck are unique! These chucking systems are designed for the grinding of cylindrical shafts that are held between centers. In the main, these chucks consist of two sections; a base unit with a center and a retractable chuck section with compensating jaws. The workpieces are held between centers and held by the compensating jaws, in the extended position. When the jaws are opened, the chuck can be retracted up to 50 mm. This retraction clears and frees up the previous holding location allowing it...

Suitability as per machining process: E Combination turning/hard turning Explanation of symbols: SwissChuck.com Item Retraction stroke Number Radial jaw stroke [mm] of jaws [mm] Application: smaller workpieces – Between centers – Complete machining of outside geometry – Suitable for small workpieces which require a medium transfer of torque for the grinding opera

Suitability as per machining process: E Combination turning/hard turning Explanation of symbols: SwissChuck.com Item Retraction stroke Number Radial jaw stroke [mm] jaws [mm] of Application: medium size workpieces – Between centers – Complete machining of outside geometry – Suitable for medium size workpieces which require a medium transfer of torque for the grinding operation Versions: 1* Hydraulically front-end activated version 2* Retraction of the compensating chuck by using a pneumatic cylinder; holding and release pressure are hydraulically activated (5000 RPM with compensating chuck...

Suitability as per machining process: E Combination turning/hard turning Explanation of symbols: SwissChuck.com Item Retraction stroke Number Radial jaw stroke [mm] of jaws [mm] Application: medium to large workpieces – Between centers – Complete machining of outside geometry – Suitable for medium to large workpieces (i.e., car or truck crankshafts) which require a large transfer of torque for the grinding opera

Suitability as per machining process: E Combination turning/hard turning Explanation of symbols: SwissChuck.com Item Retraction stroke Number Radial jaw stroke [mm] jaws [mm] of Application: large workpieces – Between centers – Complete machining of outside geometry – Suitable for large workpiece – Holding diameter up to 300

4 OVEKAV 145-12 So Example: small camshaft – Grinding of the cam geometry and all outside diameters – Driving of the workpiece during grinding of the shaft end section by using friction between the center and the workpiece 3 OVEKAV 180-35 So Example: CVT gear component – Grinding of the complete outside contour – Integrated face driver for driving of the workpiece when the compensating chuck is retr

4 OVEKAV 220-40 So Example: automotive crankshaft – Grinding of the main journals and crank pins, including end sections – Counter spindle is mostly the same design for the two-way holding during the grinding of the shaft end sections – Grinding of shaft end section while chuck in retracted mode, the opposite side remains clamped and drives the workpi

6 OVARZV 448-50 So Example: large size crankshaft – Grinding of the crank pins and main journals with holding at both ends – Grinding of shaft end section while chuck in retracted mode, the opposite side remains held and drives the workpiece – For grinding the opposite end section, the holding situation is reversed Shaft held

TOP JAWS The top jaws are specifically workpiece designed by SwissChuck. In this way, the holding function of the chuck is perfectly transferred to the workpiece. The generally hardened jaws can be given an additional coating at the holding contact locations. This coating permits an even higher transmission of torque, or the holding force for sensitive workpieces can be reduced. CENTER POINTS As a rule, the wear-resistant center points are fitted with tungsten carbide inserts. The conical or spherical centers are designed and produced according to specific requirements. Some chucks are...

MOUNTING OF MACHINE TOOL SPINDLE OVEKAV / OVARZV Machine spindle Rotary feed device: hydraulic connection Flange for rotary feed device Mounting components All chucks are specifically mounted according to the machine tool type and SwissChuck designs and provides all the required components. Hence, our c ustomers receive the entire work holding unit ready for installation. Mounting of work holding systems If desired, SwissChuck can mount the work holding system on the machine, or assist the customer’s personnel during the commissioning and the start-up operation regarding the holding system....

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