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KFDF series
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Flat Element Flange Mandrels KFDF Features • For clamping diameters from 120 mm to 375 mm • High true running accuracy ≤ 0,01 mm • Permissible component tolerance up to IT11 • Very short clamping fixture length • Short clamping length • Pull-back against external backstop surface or external backstop ring by the customer • Hand clamping optional possible • Rubberized slots in the Flat Element Seating body Backstop ring (by customer) Thrust bolt The Flat Element Flange Mandrel consists of a seating body, a thrust bolt, a set of spacer bushes, a Flat Element and a cover. An assembly for hand clamping is optionally available. The Flat Element Flange Mandrel is attached with the seating body to the machine. The Clamping Fixture is actuated by the thrust bolt, which is connected to the machine power actuating unit. Spacer bush Flat Element Cover Intermediate Flanges and Spring Force Actuators are shown starting on page 58. Clamping principle The Flat Element sits pre-loaded on the seating diameter of the seating body. For clamping, the Flat Element is elastically deformed by an axial actuating force. The component is centred, pressed against the backstop and aligned flush. Key: Axial actuating force Radial clamping force Axial pull-back

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Flat Element Flange Mandrels KFDF Backstop ring (by customer) Clamping stroke H max. Size KFDF 110 KFDF 120 KFDF 130 KFDF 140 KFDF 155 KFDF 170 KFDF 185 KFDF 200 KFDF 220 KFDF 240 KFDF 260 KFDF 280 KFDF 300 KFDF 325 Achievable clamping diameter Maximum diameter change** * Clamping diameter adjustable to two places after the decimal point • ** of the clamping diameter of the Clamping Element. • *** for clamping with pull-back action. **** The locking ring prevents loss of the pressure bolt during transport and storage of the Clamping Fixture. It must be removed prior to installation and...

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