SITEMA Locking Unit / Data sheet
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Technical Data Sheet SITEMA - Locking Unit KFH Locking by Spring Force / Hydraulic Releasing TI-F50-1-EN-10/2012 English translation of German original Technical Data Sheet TI-F50-1 Locking Unit KFH For a detailed functional description refer to”Technical Information TI-F10“. Further important practical advice is given in ”Operating Manual BA-F50“. , Proximity switch port: 2 Signal ”released“ see 3 Dimensions Locking Unit KFH (CAD-files download at www.sitema.com) 1 Proximity switch port: 1 Signal ”clamped“ see 3 Information for KFH 25 - KFH 50: Due to tolerances ports 1 and 2 can be displaced up to +/-5° Port: pressure compensation Alternativ port: release pressure see 4 Port: release pressure see 1 75 Subject to modification without prior notice 1 F is guaranteed as nominal (minimum) holding force for dry or mineral oil wetted shafts. p is the pressure required for releasing. The permissible working pressure is 160 bar. 2 Hydraulic operating volume. 3 Proximity switch holders are provided for standard proximity switches M12x1 with a nominal switching distance of 2 mm (flush mountable), except KFH 18 and KFH 25: M8x1 with a nominal distance of 1.5 mm. For easier service, the proximity switch holders have a depth stop and are pre-adjusted when delivered from the factory. 4 Plugged hydraulic port LL alternative to L, also useful for bleeding. 5 Spacers are provided to keep the unit released. To be removed after installation. SITEMA GmbH & Co.KG . Im Mittelfeld 10 . D-76135 Karlsruhe . Phone: +49(0)721/98661-0 . Fax: -11 . www.sitema.com

Technical Data Sheet SITEMA - Locking Unit KFH Locking by Spring Force / Hydraulic Releasing TI-F50-1-EN-10/2012 Technical Data Sheet TI-F50-1 Locking Unit KFH For a detailed functional description refer to”Technical Information TI-F10“. Further important practical advice is given in ”Operating Manual BA-F50“. , Proximity switch port: 1 Signal ”clamped“ see 3 Proximity switch port: 2 Signal ”released“ see 3 Port: pressure compensation Alternativ port: release pressure see 4 Port: release pressure see 1 Due to tolerances ports 1 and 2 can be displaced up to +/-5° Dimensions Locking Unit KFH...

Technical Data Sheet SITEMA - Locking Unit KFH Locking by Spring Force / Hydraulic Releasing TI-F50-1-EN-10/2012 Technical Data Sheet TI-F50-1 Locking Unit KFH For a detailed functional description refer to”Technical Information TI-F10“. Further important practical advice is given in ”Operating Manual BA-F51“. Port: pressure compensation Proximity switch port: 1 Signal ”clamped“ see 3 Alternativ port: release pressure see 4 Load direction 1 Load direction 2 Port: release pressure see 1 Proximity switch port: 2 Signal ”released“ see 3 Dimensions Locking Unit KFH (CAD-files download at...

Technical Data Sheet SITEMA - Locking Unit KFH Locking by Spring Force / Hydraulic Releasing TI-F50-1-EN-10/2012 Operational purpose The Locking Unit KFH clamps a shaft in any position. It is commonly used on cylinder rods or other round shafts and holds axial forces in both directions. Axial play A force in load direction 1 is always held without backlash. If the force acts in load direction 2, no backlash will occur either, provided that the force does not exceed approx. 80% of the nominal holding force F. In this case, the possible axial displacement is 0.1 - 0.3 mm. Choosing the right...

Technical Data Sheet SITEMA - Locking Unit KFH Locking by Spring Force / Hydraulic Releasing TI-F50-1-EN-10/2012 Operating conditions The Locking Unit KFH is designed to operate in normal clean and dry workshop atmosphere. Operation in other environmental conditions is possible if at least port T is connected to a clean and dry atmosphere (e.g. tank). In case of heavy soiling conditions (grinding dust, chips, other liquids, etc.), please contact SITEMA. Viscous lubricants and grease may reduce the holding force. Regular functional checks The Locking Unit KFH must be functionally checked at...