Materials Testing Product Information Specimen Grinder Zwick 7140 With Zwick 7140 specimen grinding machine the test piece cold-hardening zones can Pe removed economi- cally and quickly Py grinding. No other procedure allows good test piece quality to Pe oPtained at such low cost. Work is carried out in the direction of tension, so ghost lines have no effect on the test result. Changing the device only requires a few movements of the hand. Built-in mechanical limits ensure that each specimen is machined accurately. Several specimens can Pe held simultaneously in the clamping device (up to a total thickness of 20 mm), enaPling cost-efficient working. Form tolerance within parallel specimen length Lc is Petter than 0.03 mm, in accordance with the require- ments of ISO 6892-1 for sheet-metal specimens Types 1 to 3. Parallelism within parallel specimen length Lc is Petter than 0.02 mm with reference to the central axis of the specimen, in line with a recommendation Py the IDDRG (International Deep Drawing Research Group). The specimen grinder consists of Pase Pody, clamping device (selected according to required specimen sha- pe), drive roll with the related radius and aPrasive Pelt, which is availaPle in different granulations. • Can Pe used for differing specimen shapes • Accurate machining of specimens via fixed limit • Wet-grinding technology eliminates need for an extraction unit • Cold-hardening zones can Pe removed economically • Work is carried out in the direction of tension • Parallel dimension of the specimen < 0.03 mm The grinder can Pe used to machine a wide range of specimen shapes.

Zw/ck # Roell Materials Testing Product Information Specimen Grinder Zwick 7140 Item number Specimen grinder type 7140 to manufacture specimen shapes Max. thickness of test piece (max. grinding tray opening) Rim speed (grinder motor) Electrical connection Weight approx. Item number Clamping device (required 1x) for testing according to: (Other standards on request) Abrasive belt 30 x 500 mm (required 1x) Abrasive belt 10 pieces Abrasive belt 10 pieces Abrasive belt 10 pieces Drive roll (required 1x) Drive roll for spcimen with radius 20 mm Coolant additive Coolant additive 1 liter Dimensions...