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TSCHAN® TNZ ZCH

Double engagement sleeve design with an integrated or bolt-on O-ring carrier

The model TNZ ZCH consists of a one-piece housing with O-ring carriers arranged on both sides, and two hubs of the TNZ ZCA coupling.

TSCHAN® TNZ ZCH

metric inch
CAD Size Identifier TKN nmax d1kmin d1kmax D1 D2 L Gwsb
      Nm 1/min mm mm mm mm mm kg
  69 XC0106 1750 6000 12 50 98 69 89 4,6
  85 XC0108 2750 4600 18 60 115 85 103 7,1
  107 XC0110 5500 4200 28 75 145 107 127 13,6
  133 XC0113 8500 4000 40 95 176 133 157 24,3
  152 XC0115 13500 3850 50 110 196 152 185 33,5
  179 XC0117 22000 3700 60 130 225 179 216 51,2
  209 XC0120 35000 3200 70 155 256 209 246 76,1
  234 XC0123 43000 2900 85 175 286 234 278 104,3
  254 XC0125 68000 2600 95 190 310 254 308 131,7
  279 XC0127 82000 2300 110 210 345 279 358 185,4
  305 XC0130 150000 2100 120 230 375 305 388 236,6
  355 XC0135 195000 1800 130 270 430 355 450 368,0
CAD Size Identifier TKN nmax d1kmin d1kmax D1 D2 L Gwsb
  ft-lbs rpm inch inch inch inch inch lbs
  69 XC0106 1291 6000 0.472 1.969 3.858 2.717 3.504 10.1
  85 XC0108 2028 4600 0.709 2.362 4.528 3.346 4.055 15.7
  107 XC0110 4057 4200 1.102 2.953 5.709 4.213 5.000 30.0
  133 XC0113 6269 4000 1.575 3.740 6.929 5.236 6.181 53.6
  152 XC0115 9957 3850 1.969 4.331 7.717 5.984 7.283 73.9
  179 XC0117 16227 3700 2.362 5.118 8.858 7.047 8.504 112.9
  209 XC0120 25815 3200 2.756 6.102 10.079 8.228 9.685 167.8
  234 XC0123 31716 2900 3.346 6.890 11.260 9.213 10.945 229.9
  254 XC0125 50155 2600 3.740 7.480 12.205 10.000 12.126 290.3
  279 XC0127 60481 2300 4.331 8.268 13.583 10.984 14.094 408.7
  305 XC0130 110636 2100 4.724 9.055 14.764 12.008 15.276 521.6
  355 XC0135 143826 1800 5.118 10.630 16.929 13.976 17.717 811.3

General features

  • Torsionally rigid gear coupling made of high-quality steel
  • Very compact design results in a high-power density
  • Compensates for angular, radial and axial shaft offset
  • Suitable for use in temperatures up to +120 °C if special seals are used
  • Available with split sleeve (ZCA / ZCB - ZCA model range also available in ZCB design) and single-piece sleeve (ZCH)
  • The elastic O-ring can be replaced without having to move the coupled machines
  • Bores up to 270 mm
  • Torques up to TKn = 195,000 Nm / TKmax = 390,000 Nm
  • Speeds up to nmax = 6,000 rpm

General description

The TSCHAN® TNZ coupling is a torsionally rigid twin cardanic gear coupling.

Toothing

The coupling housings have a straight internal toothing whilst the hubs have an external toothing with a chased variable radius. As a result, the hubs can move spatially within the housing and thus compensate angular, radial and axial shaft misalignment of the adjoined shaft ends within specified tolerances. Depending on coupling type and size, the standard toothing permits an angular misalignment of up to 0.5 degrees per toothing-plane and an axial movement of several millimetres. The max. possible radial shaft displacement is dependent on the distance between the two toothing planes. Other toothing geometries can be used for further specific applications.

Materials

High-grade tooth profiles and grease with ultra high-pressure additives guarantee low-restoring forces and a long serviceable life. The material used is forged steel with an apparent yielding point of at least 335 N/mm2. Special materials can be used for further specific applications. Sealing is carried out using O-rings and lip-seals of buna N. The housings are centred and held together by fit-bolts and self-locking nuts.

Temperature

The use of special seals permits the temperature limit to be raised to 120 °C.

Balance

At peripheral speeds upwards of 30 m/s it is advisable to dynamically balance the coupling.

Special applications

If greater misalignments are anticipated at higher speeds and torques, an examination is necessary, performed with the assistance of a special computing programme. This is independent of the determined size. The value TKmax may not be exceeded in any state of operation (start-up, electrical short circuit, blocking, etc.).

Tolerances and standards

The bore tolerance is ISO H7, if not differently ordered. The bore diameters listed refer to keyways to DIN 6885-1.

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