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

  • Optimum Rotary Rigidity 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.

MODEL HT-5

MODEL HT-10

MODEL HT-22

MODEL HT-38

MODEL HT-50

MODEL HT-76

MODEL HT-100

 

HOW ROL-VANE WORKS

Hydraulic fluid from the supply line flows to the rotor shaft via a combined body and shaft groove. Passages within the rotor shaft direct the pressurized fluid radially into the motor body's pressure chambers. Symmetrical passages conduct the low pressure fluid back through the body to the discharge port. Four rolling vanes sequence the fluid so that each of the two rotor vanes always has high pressure against its trailing surface and tow pressure fluid at its leading surface.

Terms and Conditions of Sale