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TSCHAN® TNZ ZCHU

Double engagement sleeve coupling with integrated or bolt-on O-ring seal and one elongated universal hub

The model TNZ ZCHU consists of a one-piece housing with O-ring carriers arranged on both sides, and one elongated hub and one standard hub. If required, the elongated hub can be adapted to the plant requirements.

TSCHAN® TNZ ZCHU

metric inch
CAD Size Identifier TKN nmax d1kmin d1kmax D1 D2 C1 C2 L Gwsb
      Nm 1/min mm mm mm mm mm mm mm kg
  69 XC0206 1750 6000 12 50 98 69 43 103 149 6,3
  85 XC0208 2750 4600 18 60 115 85 50 111 164 9,7
  107 XC0210 5500 4200 28 75 145 107 62 119 184 17,4
  133 XC0213 8500 4000 40 95 176 133 76 143 225 31,1
  152 XC0215 13500 3850 50 110 196 152 90 151 246 41,4
  179 XC0217 22000 3700 60 130 225 179 105 164 275 61,5
  209 XC0220 35000 3200 70 155 356 209 120 189 315 92,8
  234 XC0223 43000 2900 85 170 286 234 135 216 359 128,4
  254 XC0225 68000 2600 95 190 310 254 150 253 411 167,4
  279 XC0227 82000 2300 110 210 345 279 175 255 438 218,3
  305 XC0230 150000 2100 120 230 375 305 190 255 453 268,5
  355 XC0235 195000 1800 130 270 430 355 220 248 478 387,0
CAD Size Identifier TKN nmax d1kmin d1kmax D1 D2 C1 C2 L Gwsb
  ft-lbs rpm inch inch inch inch inch inch inch lbs
  69 XC0206 1291 6000 0.472 1.969 3.858 2.717 1.693 4.055 5.866 13.9
  85 XC0208 2028 4600 0.709 2.362 4.528 3.346 1.969 4.370 6.457 21.5
  107 XC0210 4057 4200 1.102 2.953 5.709 4.213 2.441 4.685 7.244 38.3
  133 XC0213 6269 4000 1.575 3.740 6.929 5.236 2.992 5.630 8.858 68.5
  152 XC0215 9957 3850 1.969 4.331 7.717 5.984 3.543 5.945 9.685 91.3
  179 XC0217 16227 3700 2.362 5.118 8.858 7.047 4.134 6.457 10.827 135.6
  209 XC0220 25815 3200 2.756 6.102 14.016 8.228 4.724 7.441 12.402 204.7
  234 XC0223 31716 2900 3.346 6.693 11.260 9.213 5.315 8.504 14.134 283.1
  254 XC0225 50155 2600 3.740 7.480 12.205 10.000 5.906 9.961 16.181 369.1
  279 XC0227 60481 2300 4.331 8.268 13.583 10.984 6.890 10.039 17.244 481.2
  305 XC0230 110636 2100 4.724 9.055 14.764 12.008 7.480 10.039 17.835 591.9
  355 XC0235 143826 1800 5.118 10.630 16.929 13.976 8.661 9.764 18.819 853.2

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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