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TSCHAN® TNZ ZCA-BS / TNZ ZCB-BS

TNZ ZCA-BS: Double engagement design with a brake disc

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

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

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

TSCHAN® TNZ ZCA-BS / TNZ ZCB-BS

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 XC2906 1750 Depending on Brake disc 12 50 300 315 12,7 15,0 30,0 42,0 111 81,5 Depending on SB Depending on SB and A
  85 XC2908 1750 Depending on Brake disc 18 60 300 315 12,7 15,0 30,0 42,0 152 103,5 Depending on SB Depending on SB and A
  107 XC2910 5500 Depending on Brake disc 28 75 400 515 12,7 15,0 30,0 42,0 178 127,5 Depending on SB Depending on SB and A
  133 XC2913 8500 Depending on Brake disc 40 95 450 610 12,7 15,0 30,0 42,0 213 156 Depending on SB Depending on SB and A
  152 XC2915 13500 Depending on Brake disc 50 110 515 710 12,7 15,0 30,0 42,0 240 181 Depending on SB Depending on SB and A
  179 XC2917 22000 Depending on Brake disc 60 130 610 810 12,7 15,0 30,0 42,0 280 209 Depending on SB Depending on SB and A
  209 XC2920 35000 Depending on Brake disc 70 155 610 810 12,7 15,0 30,0 42,0 318 245,5 Depending on SB Depending on SB and A
  234 XC2923 43000 Depending on Brake disc 85 170 610 810 12,7 15,0 30,0 42,0 346 274 Depending on SB Depending on SB and A
  254 XC2925 68000 Depending on Brake disc 95 190 610 810 12,7 15,0 30,0 42,0 389 307 Depending on SB Depending on SB and A
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 XC2906 1291 Depending on Brake disc 0.472 1.969 [metr: 300 315] [metr: 12,7 15,0 30,0 42,0] 4.370 3.209 0Depending on SB 0Depending on SB and A
  85 XC2908 1291 Depending on Brake disc 0.709 2.362 [metr: 300 315] [metr: 12,7 15,0 30,0 42,0] 5.984 4.075 0Depending on SB 0Depending on SB and A
  107 XC2910 4057 Depending on Brake disc 1.102 2.953 [metr: 400 515] [metr: 12,7 15,0 30,0 42,0] 7.008 5.020 0Depending on SB 0Depending on SB and A
  133 XC2913 6269 Depending on Brake disc 1.575 3.740 [metr: 450 610] [metr: 12,7 15,0 30,0 42,0] 8.386 6.142 0Depending on SB 0Depending on SB and A
  152 XC2915 9957 Depending on Brake disc 1.969 4.331 [metr: 515 710] [metr: 12,7 15,0 30,0 42,0] 9.449 7.126 0Depending on SB 0Depending on SB and A
  179 XC2917 16227 Depending on Brake disc 2.362 5.118 [metr: 610 810] [metr: 12,7 15,0 30,0 42,0] 11.024 8.228 0Depending on SB 0Depending on SB and A
  209 XC2920 25815 Depending on Brake disc 2.756 6.102 [metr: 610 810] [metr: 12,7 15,0 30,0 42,0] 12.520 9.665 0Depending on SB 0Depending on SB and A
  234 XC2923 31716 Depending on Brake disc 3.346 6.693 [metr: 610 810] [metr: 12,7 15,0 30,0 42,0] 13.622 10.787 0Depending on SB 0Depending on SB and A
  254 XC2925 50155 Depending on Brake disc 3.740 7.480 [metr: 610 810] [metr: 12,7 15,0 30,0 42,0] 15.315 12.087 0Depending on SB 0Depending on SB and A

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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