Technical Data Sheet TI-F23 Locking Units series KFPD For a detailed functional description refer to "Technical Information TI-F10“. Further important practical advice is given in "Operation Manual BA-F23“. © Pressure port L “release”, see Q 0© Port T1 / T2 “pressure compensation” see 0 © Holder for proximity switch 1, signal “rod clamped” see Q © Holder for proximity switch 2, signal “clamping released” see Q Fig. 1: Dimensions of Locking Unit KFPD (download CAD files from www.sitema.com) o F is the minimum holding force / minimum holding torque for dry or hydraulic-oil wetted rods. Q The pressure p is required to release the clamping. The admissible operating pressure is 8 bar. & Pneumatic operating volume Q Proximity switch holders are provided for standard inductive proximity switches (M 12x1, nominal switching distance 2 mm, flush mountable). For easier service, the proximity switch holders have a depth stop and are pre-adjusted when delivered from the factory. The switches only need to be inserted to the stop and then clamped. The proximity switches are not supplied in the standard scope of delivery, but are available as accessories. 0 Internal volume changes during switching are compensated at ports T1 and T2. Air filters are fitted to the ports for “breathing”. In a dry and clean factory environment, this offers sufficient protection against dust etc. If, however, moisture or aggressive media are present (e. g. coolant spray), pressureless hoses instead of the filters must be installed to connect the Locking Unit KFPD with clean atmosphere (e. g. a clean pressureless container). o The Locking Unit KFPD can be additionally fixed to the machine part thoroughly the holes AB for anti-rotation function fitted with a pin. 7 The aluminum surfaces of the housing parts are anodized. Subject to modification without prior notice SITEMA GmbH & Co. KG . G.-Braun-StraUe 13 . D-76187 Karlsruhe . Phone: +49(0)721/98661-0 . Fax: -11 . www.sitema.co

Purpose The Locking Unit KFPD is used as an infinitely variable lock on piston rods for cylinders or other clamping rods. The Locking Unit KFPD holds static loads in both load directions or static torques in both rotation directions. Holding of dynamic loads (emergency braking) is also allowed in both load directions (linear), provided that the nominal holding force F is higher than the load in operation. It must be ensured that the rod is rotation free. Axial play The load is held free from axial play in load direction 1. In standard designs, the load is also free from axial play in load direction...

Technical Data Sheet SITEMA Locking Units KFPD Locking by spring force / pneumatic releasing TI-F23-EN-01/2018 Fig. 2: Schematic diagram of pneumatic circuit * In case impact noises due to excess pressure are audible when pressurizing the Locking Unit KFPD, these can be suppressed by means of a flow control valve (throttle) in the p-line. ** In case the pressure is not sufficiently constant (e.g. pressure drop at the beginning of a downward stroke), we recommend a check valve in the p-connection of the valve. Risk due to slowed discharge of pressure medium! Slowed discharge of the pressure medium...