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TSCHAN® TK

TSCHAN TK barrel couplings are recommended for installation in crane lifting mechanisms, to connect the cable drum with the gearbox output shaft, as well as in winch conveyors and platform hoists.

TSCHAN® TK

metric inch
CAD Identifier Size TKmax Frad d1kmax D L Lmin D1 H2 FK C
      Nm N mm mm mm mm mm mm mm mm
  WG7025 25 4700 14500 66 250 95 85 95 42 12 220
  WG7028 50 6200 16500 77 280 100 85 110 42 12 250
  WG7032 75 7800 18500 88 320 110 95 125 45 15 280
  WG7034 100 10000 20000 98 340 125 95 140 45 15 300
  WG7036 130 16000 31000 112 360 130 95 160 45 15 320
  WG7038 160 20000 35000 126 380 145 95 180 45 15 340
  WG7040 200 24000 38500 140 400 170 95 200 45 15 360
  WG7042 300 28500 42000 155 420 175 95 220 45 15 380
  WG7045 400 39000 49000 183 450 185 120 260 60 20 400
  WG7051 500 64000 94000 210 510 220 125 295 60 20 460
  WG7055 600 78000 118000 220 550 240 125 310 60 20 500
  WG7058 1000 127000 129000 250 580 260 130 350 60 20 530
  WG7065 1500 180000 150000 295 650 315 140 415 65 25 600
  WG7066 2100 275000 245000 305 665 330 145 430 65 25 615
  WG7068 2600 328500 265000 315 680 350 145 445 65 25 630
  WG7071 3400 400000 300000 335 710 380 165 475 81 35 660
  WG7078 4200 500000 340000 380 780 410 165 535 81 35 730
  WG7085 6200 685000 380000 425 850 450 165 600 81 35 800
CAD Identifier Size TKmax Frad d1kmax D L Lmin D1 H2 FK C
  ft-lbs lbs inch inch inch inch inch inch inch inch
  WG7025 25 3467 3259 2.598 9.843 3.740 3.346 3.740 1.654 0.472 8.661
  WG7028 50 4573 3708 3.031 11.024 3.937 3.346 4.331 1.654 0.472 9.843
  WG7032 75 5753 4158 3.465 12.598 4.331 3.740 4.921 1.772 0.591 11.024
  WG7034 100 7376 4495 3.858 13.386 4.921 3.740 5.512 1.772 0.591 11.811
  WG7036 130 11801 6967 4.409 14.173 5.118 3.740 6.299 1.772 0.591 12.598
  WG7038 160 14751 7866 4.961 14.961 5.709 3.740 7.087 1.772 0.591 13.386
  WG7040 200 17702 8652 5.512 15.748 6.693 3.740 7.874 1.772 0.591 14.173
  WG7042 300 21021 9439 6.102 16.535 6.890 3.740 8.661 1.772 0.591 14.961
  WG7045 400 28765 11012 7.205 17.717 7.283 4.724 10.236 2.362 0.787 15.748
  WG7051 500 47204 21125 8.268 20.079 8.661 4.921 11.614 2.362 0.787 18.110
  WG7055 600 57530 26518 8.661 21.654 9.449 4.921 12.205 2.362 0.787 19.685
  WG7058 1000 93671 28990 9.843 22.835 10.236 5.118 13.780 2.362 0.787 20.866
  WG7065 1500 132763 33710 11.614 25.591 12.402 5.512 16.339 2.559 0.984 23.622
  WG7066 2100 202832 55059 12.008 26.181 12.992 5.709 16.929 2.559 0.984 24.213
  WG7068 2600 242292 59554 12.402 26.772 13.780 5.709 17.520 2.559 0.984 24.803
  WG7071 3400 295028 67420 13.189 27.953 14.961 6.496 18.701 3.189 1.378 25.984
  WG7078 4200 368785 76409 14.961 30.709 16.142 6.496 21.063 3.189 1.378 28.740
  WG7085 6200 505235 85398 16.732 33.465 17.717 6.496 23.622 3.189 1.378 31.496

General features

  • Torsionally rigid, compensate for angular and axial shaft misalignment
  • Torque transmission by hardened steel rollers
  • For use in crane/ hoist applications to support the rope drum
  • Outer diameters up to 850 mm
  • Wear indication
  • Bores up to 400 mm
  • Torques up to TKmax = 685,000 Nm

FEATURES AND APPLICATIONS

TSCHAN TK barrel couplings are recommended for installation in crane lifting mechanisms, to connect the cable drum with the gearbox output shaft, as well as in winch conveyors and platform hoists. By selecting the coupling size (Table 1a/1b in the catalogue), it is necessery to consider the radial load (ST(N)), the dimension of the gearbox shaft (d min – d max) and especially the transmission torque (T) with the operating factor (K1) in Table 3 in the catalogue).

Rigid Connection

When the gearbox output shaft is rigidly connected to the drum in a lifting mechanism, this results in three support points, which is statically indeterminate case (Fig. 1). This type of mounting requires special care in alignment and levelling, which is difficult to achieve in practice. Mounting inaccuracies, as well as deformation in structures and wear in moving parts, lead to enormous additional forces, above all in the gearbox output shaft. These forces occur in alternating bending loads and can lead to shaft breakage and severe damage to bearings and gears.

Barrel Coupling

In the recommended mounting Fig. 2, the barrel coupling, which is installed between the gearbox and cable drum, performs the function of an articulated joint, thus making the connection statically determinate and avoiding the occurrence of high bending moments.

Mounting of the barrel coupling in a lifting mechanism.

Fig.3 shows the mounting of the barrel coupling in a lifting mechanism. Considering the fact that this coupling allows axial displacement, a self-adjusting bearing must be mounted, fixed laterally, at the opposite end of the drum shaft in order to withstand the axial forces that may be genarated. In special applications, the barrel coupling can be disigned as an articulated joint that withstands axial forces by itself.

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