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BKFF series

BKFF series

Product catalog summary

Clamping Principle
The Taper Collet is used for clamping by being pulled against the seating body, ensuring the component is centered, pressed against the backstop, and aligned flush.

Features of Taper Collet Flange Chucks BKFF

Clamping diameters range from 7.2 mm to 73.6 mm.
High true running accuracy of ≤ 0.01 mm.
Permissible component tolerance up to IT15.
Extended insertion depth.
Pull-back against external backstop surface or internal backstop pin provided by the customer.
Suitable for thin-walled or solid components.

Configuration
The Taper Collet Flange Chuck comprises a draw plate, seating body, bayonet or threaded adapter, and a Taper Collet. The Taper Collet connects to the seating body via a bayonet or threaded connection and is attached to the machine with the seating body. The clamping fixture is actuated by the draw plate connected to the machine's power actuating unit.

Technical Specifications

Various sizes of BKFF chucks are available, each with specific clamping ranges, maximum diameter changes, and maximum transmissible torque.
Insertion depth is calculated using the formula: Lemin. = K + Lf, where Lf is the chamfer length and K is a constant.

Ordering Information
When ordering, specify the size of the Clamping Fixture and the clamping range of the requested Taper Collet, e.g., BKFF 35-10,20-9,60.

Additional Notes

Ensure the correct centering diameter for customer-installed backstop rings.
Clamp stroke and seating body specifications vary by BKFF size.

Catalog excerpts

Taper Collet Flange Chucks BKFF Features • For clamping diameters from 7,2 mm to 73,6 mm • High true running accuracy ≤ 0,01 mm • Permissible component tolerance up to IT15 • Extended insertion depth • Pull-back against external backstop surface or internal backstop pin by the customer • For thin-walled or solid components Configuration The Taper Collet Flange Chuck consists of a draw plate, a seating body, a bayonet or threaded adapter and a Taper Collet. Depending on its size, the Taper Collet has a bayonet or threaded connection. It is taken up by the seating body in a form-fitting connection and connected via the bayonet or threaded connection with the bayonet or threaded adapter. The Taper Collet Flange Chuck is attached to the machine with the seating body. The Clamping Fixture is actuated by the draw plate, which is connected to the machine power actuating unit. Draw plate Seating body Bayonet or thread adapter Intermediate Flanges and Spring Force Actuators are shown starting on page 58. Taper Collet with bayonet or thread connection 14-2 Clamping principle For clamping, the Taper Collet is pulled against the seating body. The component is centred, pressed against the backstop and aligned flush. Key: Axial actuating force Radial clamping force Axial pull-back forc

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Taper Collet Flange Chucks BKFF Centring diameter for customerinstalled backstop ring Backstop surface The minimum insertion depth Lemin. is measured from the face of the seating body and derived according to the following formula from the length of the chamfer Lf of the component and the constant K: Taper collet Please note Seating body Clamping range Maximum diameter change* * of the clamping diameter of the Clamping Element. • ** for clamping with pull-back action. 1) Please note the standard clamping ranges according to the table on the next page „Clamping Elements Taper Collets BKF“. 2)...

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BKFF series

BKFF series

Catalog excerpts

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