FORKARDT EM PRECISION MANDRELS
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FORKARDT mandrels and multi blade mandrels clamping precision that comes from inside Flexibility with interchangeable • Suitable for automatic loading The clamping sleeves are interchangea- • Repeat clamping accuracy less than 0.012 mm. ble modular units requiring no readjustment and can be ground by you. • Sealing of sleeve slots bonding available as standard. • Stroke limitation for easy and safe handling With the double conical expansion of the clamping sleeves by 0.8 mm, a perfect clamping geometry is obtained. The repeat accuracy is in the range of 0.01 mm. Special clamping sleeves are...

Wide clamping range with perfect clamping • Wide clamping range geometry for tight tolerances. • Suitable for automatic loading Flexible clamping of workpieces with diverse bore diameters with the same mandrel and • Axially fixed • Uncompromising clamping geometry for narrow, consistent production tolerances Unique wide clamping range offers considerable advantages over other conventional clamping systems. Fewer mandrels are required, shorter set-up time and greater flexibility. Unique Forkardt advantage: Wider clamping range per mandrel (up to 15 mm) Axially fixed Mandrel body Clamping...

Conventional mandrels with proven technology and a broad applications spectrum EM Power-operated Interchangeable clamping sleeves for Axial Anzug maximum flexibility. The power-operated flange variant can also be mounted on the machine spindle with an intermediate flange. Naturally, interchangeable stops, rigid or moving can be tailored to your specific workpieces and supplied if required. Thread R for limit stops LØ M (for EM 8C internal thread) Perfect functioning of the mandrels requires pre-tensioned sleeves. The clamping cones of both the mandrel and the sleeve must have permanent...

Hand-operated A flexible, cost effective and surprisingly efficient alternative. Hand-operated mandrels are used mainly for small series production or as test mandrels. The dimension "G" is toleranced as Pull-back action a size of fit for precise flange mounting. The flange-less version is normally mounted between two 60° centres. Limit stops can be mounted on the diameter "L". Ordering example: Mandrel EM-6C, 90.841.148.1, hand-operated, flange-less Flange version Type Ordering example: Mandrel EM-6C, 90.800.127.1, hand-operated

Modular clamping sleeve range for fast and flexible chucking S tandard clamping sleeves All the clamping sleeves shown can easily be used on all standard mandrels. The clamping sleeves are stocked in a prefabricated condition and are finish-ground when ordered. Thus facilitating speedy delivery. For this reason the nominal size of the workpiece bore with tolerance zone must be clearly stated when ordering. In-house finish-grinding of clamping sleeves: The easiest way to finish-grind a clamping sleeve is on a hand-operated mandrel. However, finish-grinding can also take place Recommended...

Special clamping sleeves Particularly difficult problems can be solved Special problem solutions are readily available easily with specially shaped clamping sleeves. For example, extended or profiled clamping sleeves are available with internal toothing or splines for clamping in the base or pitch circle. Also available are segmented clamping sleeves for extremely high transmission forces. A few common examples are shown below: Shortened standard type Extended standard type Shortened type with recessed draw bar head External actuation of the clamping sleeve type C9

Multi-blade mandrels with highly advanced FORKARDT technology D Short multi-blade mandrel D-S For short workpieces Axially fixed The clamping blades are all moved together, very these mandrels precisely radially, so that a concentricity of 0.01 mm maximum is provided over the entire clamping range. To generate the axial force, pneumatic or hydraulic cylinders can be used. When equipped with the appropriate attachment Attachment for manual actuation Short version Type p designation D D D D D D D D D D D D D D D D D D D D D D Also for long version Ordering example: Multi-blade mandrel...

Long multi-blade mandrel D-L For long workpieces Axially fixed The clamping blades are all moved together, very precisely radially and so provide a perfect clamping geometry over the entire clamping range with a concentricity of 0.01mm maximum. To generate the axial force, pneumatic or hydraulic cylinders can be used. equipped with the appropriate attachment these mandrels can also be operated manually. Attachment for manual actuation Long version Type designation Clamping range Number of clamping blades Also for short version Ordering example: Multi-blade mandrel FORKARDT D 2-60 L

Special mandrels designed to solve special problems Special problems require special solutions. FORKARDT has the experience and the technology to deliver workable cost effective solutions. Shown below are just a few examples of the many successful solutions which have been developed recantly: Multi-blade double mandrel Mandrel for holding un-machined Both clamping groups each with 12 blades The jaws of the mandrel operating with clamp concentric and independent of each tensile force for forged parts (sleeve heads) other, so that workpieces can be adjusted with a tapered bore slide in the...

Example 4: Mandrel type EM/special version, with retractable stop The workpiece "driving wheel" is loaded automatically and monitored by air pressure. It is clamped in the bore and drawn towards the stop, which is moved back when the workpiece is clamped. Machining takes place on all sides. Example 5: Mandrel for small parts with a diameter from about 5 mm. The workpiece is clamped via the slotted sleeve, actuated by the axial pressure of the tailstock centre. Example 3: Expanding mandrels for narrow workpieces, DHL series Expanding mandrels are used preferably for workpieces with bores in...

tig. igar sig. Einz klas rst E ren. fah Er FORKARDT LOCATIONS FORKARDT DEUTSCHLAND GmbH Lachenhauweg 12 72766 Reutlingen-Mittelstadt P. (+49) 7127 5812 0 E. info@forkardt.com FORKARDT USA 2155 Traversefield Drive Traverse City, MI 49686, USA Phone: (+1) 800 544-3823 (+1) 231 995-8300 F. (+1) 231 995-8361 E. sales@forkardt.us FORKARDT INDIA LLP Plot No. 39 D.No.5-5-35 Ayyanna Ind. Park IE Prasanthnagar, Kukatpally Hyderabad - 500 072, India P. (+91) 40 400 20571 F. (+91) 40 400 20576 E. info@forkardtindia.com FORKARDT FRANCE S.A.R.L. 28 Avenue de Bobigny F-93135 Noisy le Sec Cédex P. (+33) 1...