ALS - Electromechanical Screw Rams
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COLUMBUS McKINNON Screw Rams A STRATEGY OF STRONG BRANDS

ALS – Electromechanical Screw Rams Design features The "ALS" Electromechanical Screw Ram is a ­­universal­­ drive system for a wide range of applications within the machine building industry. With a choice of 4 sizes, a modular design in • "ALS" compact version and • "ALSR" cylinder version it is possible to obtain the optimal design features to suit your specific requirements. The system is ­particularly ideal for single drive applications on ­linear motion projects. Description of the product The "ALS" consists of a fully enclosed housing unit with a rugged axial and radial bearing...

Trapezoidal and ball screw threads Trapezoidal thread suitable for: • Lift speeds up to approx. 3 m/min • Low duty cycle (approx. 20% per hour). Ball screw threads suitable for: • Frequent adjustment s • Lift speeds > 3 m/min • Exceptional operating conditions Anti-turn device An integrated anti-turn device can be f ­itted to the shaft tube in the "ALSR" v ­ ersion, if no on-site anti-turn device is on the spindle. Stroke limitation The "ALSR" version can be fitted with a stroke limitation to order. The picture shows an inductive version using an inductive proximity switch in a programmable...

Buckling diagram Speed diagram Critical rotation speed [min-1] Safety at: compression range S=4, Euler’s range S=6 System length = NL + H + C 1) With no floating bearing at the end of the screw, the critical rotation speed is reduced by approx. 80%. Euler’s case I Euler’s case II Euler’s case III System length [mm] Calculation formula: • Look into the selection table for the maximum permissible tensile/compressive forces to narrow down the choice of size • Drive power: • For compressive force: Check the screw size in the buckling diagram (consider the Euler’s case) • Screw lengths from >...

Performance data tables: All performance figures related to the dynamic lifting force and a duty cycle of 20 % per hour or 30 % per 10 minutes in an ambient temperature of 20 °C. ALS – ALSR with Tr: The screw/nut system is overheated in fields highlighted in grey. ALS – ALSR with Ku: The service life falls below 500 hours in the fields highlighted in grey. Performance data table ALS 10 – ALSR 10 with Tr 24x5* Performance data table ALS 25 – ALSR 25 with Tr 30x6* Speed n [min-1] 700 500 300 100 50 Performance data table ALS 25 – ALSR 25 with Ku 32x10 / Ku 32x20 Speed n [min-1] 700 500 300...

Only the most recent dimensional drawings are binding!

The standard sizes are as follows: Tr 24x5 / Tr 30x6 / Tr 40x7 / Tr 7

COLUMBUS McKINNON Engineered Products GmbH Am Silberpark 2 - 8 86438 Kissing/Germany Phone +49 8233 2121 800 Fax +49 8233 2121 805 antriebstechnik@cmco.eu www.cmco.eu/pfaff-silberblau