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TSCHAN® TNM G

Multi-part design, elastic ring can be replaced without having to axially move the machine

The coupling TSCHAN® TNM G is a torsionally elastic and puncture-proof claw coupling. It balances out angular, radial, and axial shaft misalignments within defined limits. The coupling transfers the torque via pressure loadable, elastic buffers or Perbunan (Pb) which are joined together as an intermediate ring. The elastic intermediate ring can cushion impacts and torsional vibrations; it is oil-tight and electrically conductive. A coupling half is divided in two and allows through this a simple separation of the coupled machine. With the claw ring pulled back it is possible to check the rotational direction of the drive. It is also possible to lift out radially a coupling half with accompanying aggregate. The elastic intermediate ring can be changed without axially shifting the machine. The coupling is usable in every sense of rotation and installation position.

TSCHAN® TNM G

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metric inch
CAD Identifier Size TKNPb72 TKNPb82 nmax d1kmax D1 D2 C1 C2 L Gwub
      Nm Nm 1/min mm mm mm mm mm mm kg
  WN0208 82 48 75 5000 32 82 53 40 40 92 2,0
  WN0209 97 96 150 5000 42 97 69 50 49 113 3,4
  WN0211 112 150 230 5000 48 112 79 60 58 133 5,5
  WN0212 128 250 380 5000 55 128 90 70 68 154 8,3
  WN0214 148 390 600 4500 65 148 107 80 78 176 13,1
  WN0216 168 630 980 4000 75 168 124 90 87 198 19,4
  WN0219 194 1050 1650 3500 85 194 140 100 97 221 28,6
  WN0221 214 1500 2400 3000 95 214 157 110 107 243 38,8
  WN0224 240 2400 3700 2750 110 240 179 120 117 267 52,4
  WN0226 265 3700 5800 2500 120 265 198 140 137 310 75,3
  WN0229 295 4900 7550 2250 130 295 214 150 147 334 97,3
  WN0233 330 6400 9900 2000 150 330 248 160 156 356 130,0
  WN0237 370 8900 14000 1750 170 370 278 180 176 399 183,6
  WN0241 415 13200 20500 1500 190 415 315 200 196 441 258,2
  WN0248 480 18000 28000 1400 210 480 315 220 220 485 346,5
  WN0257 575 27000 41000 1200 230 575 350 240 240 525 528,8
Identifier Size TKNPb72 TKNPb82 nmax d1kmax D1 D2 C1 C2 L Gwub
ft-lbs ft-lbs rpm inch inch inch inch inch inch lbs
WN0208 82 35 55 5000 1.25984 3.228 2.087 1.575 1.575 3.622 4.41
WN0209 97 71 111 5000 1.65354 3.819 2.717 1.969 1.929 4.449 7.50
WN0211 112 111 170 5000 1.88976 4.409 3.110 2.362 2.283 5.236 12.13
WN0212 128 184 280 5000 2.16535 5.039 3.543 2.756 2.677 6.063 18.30
WN0214 148 288 443 4500 2.55905 5.827 4.213 3.150 3.071 6.929 28.88
WN0216 168 465 723 4000 2.95275 6.614 4.882 3.543 3.425 7.795 42.77
WN0219 194 774 1217 3500 3.34645 7.638 5.512 3.937 3.819 8.701 63.05
WN0221 214 1106 1770 3000 3.74015 8.425 6.181 4.331 4.213 9.567 85.54
WN0224 240 1770 2729 2750 4.3307 9.449 7.047 4.724 4.606 10.512 115.52
WN0226 265 2729 4278 2500 4.7244 10.433 7.795 5.512 5.394 12.205 166.01
WN0229 295 3614 5569 2250 5.1181 11.614 8.425 5.906 5.787 13.150 214.51
WN0233 330 4720 7302 2000 5.9055 12.992 9.764 6.299 6.142 14.016 286.60
WN0237 370 6564 10326 1750 6.6929 14.567 10.945 7.087 6.929 15.709 404.77
WN0241 415 9736 15120 1500 7.4803 16.339 12.402 7.874 7.717 17.362 569.23
WN0248 480 13276 20652 1400 8.2677 18.898 12.402 8.661 8.661 19.094 763.90
WN0257 575 19914 30240 1200 9.0551 22.638 13.780 9.449 9.449 20.669 1165.81

TSCHAN® TNM G

Multi-part design, to change the intermediate ring without axial movement of the driven parts. Elastic intermediate ring in different hardnesses: standard Pb72, hard Pb82.

General features

  • Torsionally flexible, compensate for angular, radial and axial shaft misalignment
  • Intermediate rings loaded in compression
  • Elastomers available in various shore hardness degrees
  • Suitable for temperatures from –30°C to +100°C
  • The elastic ring can be replaced without having to move the coupled machines (multi-part models)
  • Bores up to max. 280 mm
  • Torques up to TKn = 41,000 Nm / TKmax = 97,500 Nm
  • Speeds up to nmax = 5,000 rpm

INTRODUCTION

The rotationally resilient coupling of the TSCHAN® TNM 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 intermediate rings 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

Synthetic rubbers are used as base material for the elastic elements of the TNM couplings. As a rule these are electrically conductive and therefore prevent undesirable static charges. For the elastic elements of the TSCHAN® TNM coupling series, there are two different material hardnesses available as standard.

  1. Perbunan (Pb 72) with nitrile rubber (NBR) as the basic material and a hardness of 72 Shore A.
  2. Perbunan (Pb 82) with nitrile rubber (NBR) as the basic material and a hardness of 82 Shore A.

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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