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Char-Lynn 45 Series VIS (Valve-In-Star) Motor

The VIS 45 is the most powerful motor in the VIS Series product line. Maximum continuous output torque capability is rated to 4520 Nm [40,000 lb-in.] with a displacement range from 630cc to 1560cc per revolution. VIS 45 motors can be run up to 170 LPM [45 GPM] with pressure capability up to 310 bar [4500 PSI]. The motor utilizes patented VIS technology with improved high-strength Geroler, optimized drive geometry, and two-piece pre-loaded balance plate for increased starting efficiency, reduced leakage and higher back pressure capacity.


  • Patented VIS Geroler technology
  • Three moving components: (Geroler‚ star, drive, and output shaft)
  • Two-piece pre-loaded pressure balance plate
  • Variety of optional features including two-speed option, and case flow solutions for both closedloop and open-loop applications

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