Hartmann Controls, Inc.

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A Strong Performance Servo Motor, Instant Reversibility and Low Speed Operation Qualifies Hartmann as a Unique Motor. Available in .5, 1.0, 2.2, 5.0, 7.6, and 10 cu. in. displacement UNIQUE ROL-VANE MOTOR PRINCIPLE Key to the Hartmann Rol-Vane Motor's high torque - low speed operation and instant reversibility is the Rol-Vane principle. The motor's dual-vane rotor and timed interval valving create a hydraulically balanced unit, eliminating radial bearing loads - a major cause of hydraulic motor wear. SMOOTH BUT RUGGED PRECISION FEATURES is achieved through use of a one-piece shaft-rotor assembly. -Constant Velocity of Rotating Elements - Absence of reciprocating and cam-operated parts reduces wear and its associated problems. -Uniformly Free Rotation through its entire speed range is made possible by the motor's unique pressure balancing system which eliminates hydraulic loading and pressure locks. -Minimum Breakaway Pressure of 10 to 20 psi means high breakout torque efficiency. -High Volumetric Efficiency through use of precisely machined hardened steel rolling vanes which act as non-wearing valving mechanisms. -High Mechanical Efficiency is theresult of close tolerance design and high degrees of finish. -Wide-Speed Range - Infinite speed variation can be had from a single motor, from a fraction of an rpm through full rated speed. -Quiet Operation makes the Rol-Vane motor ideal for use where low noise level is a must.

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