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TSCHAN® TNB BHD

Combination one-part/multi-part with VKR buffers - Retractable claw ring

The TSCHAN® TNB BHD coupling is a torsionally flexible, puncture proof claw coupling. It compensates for angular, radial and axial shaft misalignments within defined limits. The coupling transmits torque through elastic buffers loaded in compression. These buffers come in perbunan (PB) or polyurethane (Vk), as a standard VkR. These elastic buffers dampen shocks and torsional vibrations and are resistant to oil. Buffers made of perbunan are electrically conductive. One of the coupling halves consists of a flange hub to which a claw ring is bolted. When the claw ring is removed, it is easily possible to check the rotational direction of the drive. The coupling is suitable for use in every direction of rotation and installation position.

TSCHAN® TSCHAN B BHD

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metric inch
CAD Identifier TKN nmax d1f max d2f max D1 D4 C1 C2 L Gwub
    Nm 1/min mm mm mm mm mm mm mm kg
  WB0230-A 6000 3300 127 104,8 300 170 160 160 384 104
  WB0230-B 6000 3300 127 127 300 200 160 186 410 120
  WB0235-A 10500 2800 146,1 114,3 350 180 180 180 424 142
  WB0235-B 10500 2800 146,1 158,8 350 250 180 231 475 191
  WB0240-A 16000 2450 165,1 130,2 400 210 198 190 459 206
  WB0240-B 16000 2450 165,1 177,8 400 280 198 239 508 265
  WB0245-A 21000 2200 184,2 158,8 450 250 218 200 489 271
  WB0245-B 21000 2200 184,2 187,4 450 300 218 239 528 322
  WB0250-A 35000 2000 196,9 165,1 500 270 236,5 228 547,5 373
  WB0250-B 35000 2000 196,9 203,2 500 330 236,5 279 598,5 451
  WB0255-A 45000 1800 217,5 184,2 550 280 256,5 228 567,5 442
  WB0255-B 45000 1800 217,5 217,5 550 350 256,5 279 618,5 534
  WB0260-A 55000 1650 228,6 212,8 600 330 258 258 604 578
  WB0260-B 55000 1650 228,6 242,3 600 385 258 299 645 672
  WB0265-A 65000 1500 228,6 228,6 650 350 286,5 258 637,5 695
  WB0265-B 65000 1500 228,6 242,3 650 385 286,5 299 678,5 767
  WB0270-A 90000 1400 263,6 228,6 700 370 327 298 727 941
  WB0270-B 90000 1400 263,6 271,5 700 450 327 345 774 1105
  WB0280-A 120000 1200 292,1 279,4 800 450 357 338 797 1316
  WB0280-B 120000 1200 292,1 304,8 800 490 357 365 824 1426
  WB0290-A 180000 1100 330,2 304,8 900 480 407 338 853 1695
  WB0290-B 180000 1100 330,2 366,9 900 590 407 399 914 2042
Identifier TKN nmax d1f max d2f max D1 D4 C1 C2 L Gwub
ft-lbs rpm inch inch inch inch inch inch inch lbs
WB0230-A 4425 3300 5.000 4.126 11.811 6.693 6.299 6.299 15.118 229.28
WB0230-B 4425 3300 5.000 5.000 11.811 7.874 6.299 7.323 16.142 264.55
WB0235-A 7744 2800 5.752 4.500 13.780 7.087 7.087 7.087 16.693 313.06
WB0235-B 7744 2800 5.752 6.252 13.780 9.843 7.087 9.094 18.701 421.08
WB0240-A 11801 2450 6.500 5.126 15.748 8.268 7.795 7.480 18.071 454.15
WB0240-B 11801 2450 6.500 7.000 15.748 11.024 7.795 9.409 20.000 584.23
WB0245-A 15489 2200 7.252 6.252 17.717 9.843 8.583 7.874 19.252 597.45
WB0245-B 15489 2200 7.252 7.378 17.717 11.811 8.583 9.409 20.787 709.89
WB0250-A 25815 2000 7.752 6.500 19.685 10.630 9.311 8.976 21.555 822.32
WB0250-B 25815 2000 7.752 8.000 19.685 12.992 9.311 10.984 23.563 994.29
WB0255-A 33191 1800 8.563 7.252 21.654 11.024 10.098 8.976 22.342 974.44
WB0255-B 33191 1800 8.563 8.563 21.654 13.780 10.098 10.984 24.350 1177.27
WB0260-A 40566 1650 9.000 8.378 23.622 12.992 10.157 10.157 23.779 1274.27
WB0260-B 40566 1650 9.000 9.539 23.622 15.157 10.157 11.772 25.394 1481.51
WB0265-A 47942 1500 9.000 9.000 25.591 13.780 11.280 10.157 25.098 1532.21
WB0265-B 47942 1500 9.000 9.539 25.591 15.157 11.280 11.772 26.713 1690.95
WB0270-A 66381 1400 10.378 9.000 27.559 14.567 12.874 11.732 28.622 2074.55
WB0270-B 66381 1400 10.378 10.689 27.559 17.717 12.874 13.583 30.472 2436.11
WB0280-A 88508 1200 11.500 11.000 31.496 17.717 14.055 13.307 31.378 2901.29
WB0280-B 88508 1200 11.500 12.000 31.496 19.291 14.055 14.370 32.441 3143.79
WB0290-A 132763 1100 13.000 12.000 35.433 18.898 16.024 13.307 33.583 3736.84
WB0290-B 132763 1100 13.000 14.445 35.433 23.228 16.024 15.709 35.984 4501.84

TSCHAN®-TNB Type BHD

Combination of a one-part design and a multi-part design coupling hub and VkR buffer. Easy replacement of the elastic buffer without axial movement of the coupled machines.

General features

  • Torsionally flexible, compensate for angular, radial and axial shaft misalignment
  • Buffers loaded in compression
  • Buffers can be replaced radially without having to move the coupled machines
  • Elastomers available in various shore hardness degrees
  • Suitable for temperatures from –30°C to +100°C
  • Outer diameter up to 1,275 mm
  • Bores up to max. 400 mm
  • Torques up to TKn = 260,000 Nm / TKmax = 780,000 Nm
  • Speeds up to nmax = 4,100 rpm

INTRODUCTION

The rotationally resilient, failsafe claw coupling TSCHAN TNB series is flexible in all directions and therefore compensates for angular, parallel and axial shaft misalignments of the connected machines. Misalignments can be caused, for example, by inaccurate assembly, heat movements or settling phenomena.

Avoiding Torsional Vibration

By virtue of the rotational resilience of the coupling, dangerous torsional vibrations from the operational range of plant machinery can be transferred to rotational speed ranges in which no negative effects are to be expected. The elastic buffers possess a high material damping capability which makes it possible for the couplings to keep the resonance enhancements within limits when passing through dangerous speed ranges, thereby protecting the coupled machines against damage. The couplings also mitigate torque shocks and cause a vibrating system that has been excited by an impact to come to rest very quickly due to the material damping qualities. The conduction of structure-borne noise is prevented.

Elastomer Materials

The elastic TSCHAN TNB buffers are made of butadiene-nitril-rubber (Pb82) or polyurethane (VkR, VkW). The black buffer (Pb82) are normally electrically conductive and therefore prevent undesirable electrostatic charges. The red (VkR) and white (VkW) buffers ensure electrical insulation between connected machines as long as there are no other electrically conductive connections. The resilience of the individual elastomer materials is designated by their Shore hardness. From these values an indirect conclusion can be drawn with respect to the torques the coupling is able to transmit and its spring stiffness. For further details, please see the technical data sheet.

Environmental conditions

The employed elastomer materials operate reliably in ambient temperature ranges of –30° to +100°C. Please contact RINGFEDER POWER TRANSMISSION if higher ambient temperatures are involved. The influence of the temperature on the coupling size selection is explained in more detail in the below-mentioned design directives. It is only allowed to operate the coupling in normal industrial air. Aggressive media may attack the coupling components, bolts and elastic elements, and, therefore, present a danger to the operational safety of the coupling. The coupling can be certified in accordance with the European Directive 94/9/EC, also known as ATEX 95. Please contact RINGFEDER POWER TRANSMISSION regarding the declaration of conformity according to 94/9/EC and the effects of aggressive ambient media.

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