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GERWAH® Torsionally Rigid Disc Couplings with RINGFEDER® keyless shrink disc hub design, Series XHC

Coupling with short spacer

Multiple-disc coupling for compensating of axial, angular and radial misalignments

GERWAH® XHC

metric inch
CAD Size d1min d1max A L1 L2 TL nmax ΔKa ΔKw ΔKr
    mm mm mm mm mm Nm 1/min mm Grad mm
  17 15 37 70,5 110,2 40 8 8400 1,1 2 0,3
  32 24 42 88 127,6 45 14 6800 1,2 2 0,4
  75 28 60 116 156,3 55 31 5400 1,6 2 0,5
  135 36 75 140,5 175 60 63 4600 2,1 2 0,7
  240 50 90 166,5 212,6 75 110 3800 2,5 2 0,7
  400 50 100 198,5 251,7 90 180 3400 2,8 2 0,7
CAD Size d1min d1max A L1 L2 TL nmax ΔKa ΔKw ΔKr
  inch inch inch inch inch ft-lbs rpm inch degree inch
  17 0.60 1.44 2.78 4.34 1.56 6 8400 0.043 2 0.01
  32 0.94 1.65 3.46 5.02 1.77 10 6800 0.05 2 0.015
  75 1.10 2.36 4.59 6.15 2.17 23 5400 0.06 2 0.02
  135 1.41 2.76 5.53 6.89 2.36 46 4600 0.08 2 0.027
  240 1.97 4.53 6.56 8.37 2.95 81 3800 0.10 2 0.027
  400 1.97 3.74 7.81 9.91 3.54 133 3400 0.11 2 0.027

GERWAH® XHS, XHD and XHC: The advantages of the system

1. No tooth backlash

  • An important property for synchronous operation or for machines that are frequently used in start/stop or reverse operation. GERWAH® couplings are ideally suited to applications in which the positioning accuracy of the control system in both directions is important.
  • 2. Torsional stiffness

  • The design of the coupling guarantees a high level of torsional stiffness, which is an important property for applications in packaging machines, servomotors drives, printing presses and machine tools.
  • 3. High temperatures

  • GERWAH® couplings can be used under extreme temperature conditions up to 240 °C/460 °F, e.g. in high-temperature fluid pumps.
  • 4. High speeds

  • Due to the very strict production tolerances, GERWAH® allows precise vertical alignment and a high level of true running accuracy, making it ideal for applications involving high speeds even with irregular rotary forces.
  • 5. High service life

  • The highly accurate disc pack insures optimum force distribution, while its flexibility also protects against vibrations from the drive. GERWAH® couplings do not wear, so that a long service life is guaranteed
  • 6. Maintenance-free operation

  • GERWAH® couplings are maintenance-free and do not require greasing or cleaning
  • Characteristics
    Mounting with RINGFEDER® Shrink Disc
    GERWAH® - XHS, XHD, XHC

    Multiple-disc coupling for compensating of axial, angular and radial misalignments

    • Permanently backlash-free attachment of the multipledisc coupling by means of RINGFEDER Shrink Disc
    • Overall length adaptable to customer requirements by the use of various center spacers (XHD, XHC)
    • High torsional stiffness
    • Backlash-free transmission of high torques
    • Can be used up to temperatures of approx. 240 °C/460 °F
    • Maintenance-free operation

    Non-standard spacers
    Many applications for GERWAH® couplings require special spacer lengths and dimensions. We can supply spacers with lengths of up to 5m.

    Higher rotational speeds and/or special couplings
    A coupling sometimes needs to fulfil certain industrial safety standards or is operated at very high rotational speeds. We can also provide solutions for this.

    GERWAH® XHC

    • Coupling with short spacer

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