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RINGSPANN
KFFF series

KFFF series

Product catalog summary

Overview: The document provides technical specifications and operational details for Flat Element Flange Chucks (KFFF), focusing on their clamping principles, features, configuration, and ordering instructions.

Clamping Principle: The Flat Element is pre-loaded in the seating diameter of the seating body. Clamping is achieved by elastically deforming the Flat Element with an axial actuation force, centering the component and aligning it flush against the backstop.

Features:

Clamping diameters range from 90 mm to 260 mm.
High true running accuracy of ≤ 0.01 mm.
Permissible component tolerance up to IT11.
Short clamping fixture and clamping length.
Pull-back against internal or external backstop options.
Optional hand clamping.
Rubberized slots in the Flat Element.

Configuration: The chuck consists of a seating body with backstop pins, a Flat Element, and a draw bolt. An optional hand clamping assembly is available. The chuck is attached to the machine via the seating body, and the clamping fixture is actuated by the draw bolt connected to the machine's power actuating unit.

Technical Specifications: A detailed table provides specifications for various KFFF sizes, including clamping diameters, permissible torque, and actuating forces. Key parameters include:

Clamping diameter adjustable to two decimal places.
Maximum transmissible torque and actuating force values provided.
Details on backstop pins and locking ring specifications.

Ordering Instructions: When ordering, specify the size of the Clamping Fixture, clamping diameter, component tolerance, and insertion depth. Example: KFFF 120-105.47h6-2.8.

Additional Notes: The document includes references to DIN standards and provides detailed diagrams for installation and component interaction.

Catalog excerpts

Flat Element Flange Chucks KFFF Features • For clamping diameters from 90 mm to 260 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 internal backstop pins, 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) The Flat Element Flange Chuck consists of a seating body with backstop pins, a Flat Element and a draw bolt. An assembly for hand clamping is optionally available. The Flat Element Flange Chuck is attached to the machine with the seating body. The Clamping Fixture is actuated by the draw bolt, which is connected to the machine power actuating unit. Flat Element Draw bolt Intermediate Flanges and Spring Force Actuators are shown starting on page 58. Clamping principle The Flat Element sits pre-loaded in the seating diameter of the seating body. For clamping, the Flat Element is elastically deformed by the axial actuation 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 Chucks KFFF Detail "Z" Backstop surface DIN 974 -1-12 Series 1 (8 x 45°) Backstop ring (by customer) KFFF 110 KFFF 120 KFFF 130 KFFF 140 KFFF 155 KFFF 170 KFFF 185 KFFF 200 KFFF 220 KFFF 240 KFFF 260 KFFF 280 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. • **** Y = Number of backstop pins on pitch circle diameter Ta2. • ***** The locking ring prevents loss of the draw bolt during transport and storage...

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KFFF series

KFFF series

Catalog excerpts

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