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TSCHAN® TNZ ZCA-BT / TNZ ZCB-BT

TNZ ZCA-BT: Double engagement design with a brake drum

The coupling TNZ ZCA-BT consists of two coupling halves with a brake drum mounted in between, and has longer fitted bolts than the model TNZ ZCA.

TNZ ZCB-BT: Double engagement design with a bolt-on O-ring carrier and a brake drum

The coupling TNZ ZCB-BT consists of two coupling halves with a brake drum mounted in between, and has longer fitted bolts than the model TNZ ZCB.

TSCHAN® TNZ ZCA-BT / TNZ ZCB-BT

metric inch
CAD Size Identifier
ZCA
TKN nmax d1kmin d1kmax A SB D1 D6 L Gwsb
      Nm 1/min mm mm mm mm mm mm mm kg
  69 XC2806 1750 2850 12 50 200 75 111 80 100 9,5
  85 XC2808 2750 2300 18 60 200 75 152 103,5 114 13,6
  85 XC2808 2750 2300 18 60 250 95 152 103,5 116 18,5
  85 XC2808 2750 1820 18 60 315 118 152 103,5 118 28,7
  107 XC2810 5500 2300 28 75 250 95 178 129,5 140 23,8
  107 XC2810 5500 1820 28 75 315 118 178 129,5 142 51,5
  107 XC2810 5500 1450 28 75 400 150 178 129,5 144 51,5
  133 XC2813 8500 1820 40 95 315 118 213 156 172 44,0
  133 XC2813 8500 1450 40 95 400 150 213 156 174 61,5
  152 XC2815 13500 1820 50 110 315 118 240 181 200 54,8
  152 XC2815 13500 1450 50 110 400 150 240 181 202 72,1
  179 XC2817 22000 1450 60 130 400 150 280 209 233 92,6
  179 XC2817 22000 1150 60 130 500 190 280 209 234 122,1
  209 XC2820 35000 1450 70 155 400 150 318 247 263 119,9
  209 XC2820 35000 1150 70 155 500 190 319 247 264 149,4
  209 XC2820 35000 910 70 155 630 236 318 247 269 207,3
  234 XC2823 43000 1150 80 170 500 190 346 273 296 174,9
  234 XC2823 43000 910 85 170 630 236 346 273 304 232,5
  234 XC2823 43000 800 85 170 710 265 346 273 308 289,5
  254 XC2825 68000 1150 95 190 500 190 389 307 326 222,2
  254 XC2825 68000 910 95 190 630 236 389 307 331 279,3
  254 XC2825 68000 800 95 190 710 265 389 307 338 335,7
CAD Size Identifier
ZCA
TKN nmax d1kmin d1kmax A SB D1 D6 L Gwsb
  ft-lbs rpm inch inch inch inch inch inch inch lbs
  69 XC2806 1291 2850 0.472 1.969 7.874 2.953 4.370 3.150 3.937 20.9
  85 XC2808 2028 2300 0.709 2.362 7.874 2.953 5.984 4.075 4.488 30.0
  85 XC2808 2028 2300 0.709 2.362 9.843 3.740 5.984 4.075 4.567 40.8
  85 XC2808 2028 1820 0.709 2.362 12.402 4.646 5.984 4.075 4.646 63.3
  107 XC2810 4057 2300 1.102 2.953 9.843 3.740 7.008 5.098 5.512 52.5
  107 XC2810 4057 1820 1.102 2.953 12.402 4.646 7.008 5.098 5.591 113.5
  107 XC2810 4057 1450 1.102 2.953 15.748 5.906 7.008 5.098 5.669 113.5
  133 XC2813 6269 1820 1.575 3.740 12.402 4.646 8.386 6.142 6.772 97.0
  133 XC2813 6269 1450 1.575 3.740 15.748 5.906 8.386 6.142 6.850 135.6
  152 XC2815 9957 1820 1.969 4.331 12.402 4.646 9.449 7.126 7.874 120.8
  152 XC2815 9957 1450 1.969 4.331 15.748 5.906 9.449 7.126 7.953 159.0
  179 XC2817 16227 1450 2.362 5.118 15.748 5.906 11.024 8.228 9.173 204.1
  179 XC2817 16227 1150 2.362 5.118 19.685 7.480 11.024 8.228 9.213 269.2
  209 XC2820 25815 1450 2.756 6.102 15.748 5.906 12.520 9.724 10.354 264.3
  209 XC2820 25815 1150 2.756 6.102 19.685 7.480 12.559 9.724 10.394 329.4
  209 XC2820 25815 910 2.756 6.102 24.803 9.291 12.520 9.724 10.591 457.0
  234 XC2823 31716 1150 3.150 6.693 19.685 7.480 13.622 10.748 11.654 385.6
  234 XC2823 31716 910 3.346 6.693 24.803 9.291 13.622 10.748 11.968 512.6
  234 XC2823 31716 800 3.346 6.693 27.953 10.433 13.622 10.748 12.126 638.2
  254 XC2825 50155 1150 3.740 7.480 19.685 7.480 15.315 12.087 12.835 489.9
  254 XC2825 50155 910 3.740 7.480 24.803 9.291 15.315 12.087 13.031 615.8
  254 XC2825 50155 800 3.740 7.480 27.953 10.433 15.315 12.087 13.307 740.1

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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