Elastomer Jaw Couplings TNS S-St | RINGFEDER®

The RINGFEDER® TNS S-St coupling is a torsionally flexible, fail-safe claw coupling. It balances out angular, radial and axial shaft misalignments within defined limits. The coupling transfers the torque via pressure loadable, elastic buffers of synthetic rubber (Pb) or polyurethane (Vk), as a standard VkR, and are connected to each other to form an elastic intermediate ring. The elastic intermediate ring can cushion impacts and torsional vibrations; it is oil-resistant. Intermediate rings made of Perbunan are electrically conductive.

TNS S-St

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CAD
Identifier
Size
TKN
Nm
TKmax
Nm
nmax
1/min
d1kmax
mm
D2
mm
C1
mm
L
mm
L2
mm
Gwub
kg
WS0105 50 15 40 15000 25 41 30 75 23,5 0,8
WS0107 70 55 160 11000 38 55 38,5 100 31,5 1,8
WS0108 85 75 225 9000 40 60 43,5 110 35 2,7
WS0110 100 130 390 7250 48 75 49,5 125 37,5 4,9
WS0112 125 250 750 6000 55 85 56,5 145 44 7,5
WS0114 145 400 1200 5250 65 95 61 160 47,5 10,6
WS0117 170 630 1900 4500 85 120 75 190 60,5 18,0
WS0120 200 1100 3300 3750 95 135 99 245 79,5 31,0
WS0123 230 1700 5150 3250 105 150 110 270 88,5 43,5
WS0126 260 2650 7950 3000 125 180 112,5 285 88,5 63,0
WS0130 300 3900 11700 2500 140 200 131,5 330 107,5 91,5
WS0136 360 6500 19500 2150 150 210 172 417 140 146,2
WS0140 400 8900 26700 1900 160 225 163,5 400 137 160,4
CAD Identifier
Size
TKN
ft-lbs
TKmax
ft-lbs
nmax
rpm
d1kmax
inch
D2
inch
C1
inch
L
inch
L2
inch
Gwub
lbs
  WS0105 50 11 30 15000 0.984 1.614 1.181 2.953 0.925 1.76
  WS0107 70 41 118 11000 1.496 2.165 1.516 3.937 1.240 3.97
  WS0108 85 55 166 9000 1.575 2.362 1.713 4.331 1.378 5.95
  WS0110 100 96 288 7250 1.890 2.953 1.949 4.921 1.476 10.80
  WS0112 125 184 553 6000 2.165 3.346 2.224 5.709 1.732 16.53
  WS0114 145 295 885 5250 2.559 3.740 2.402 6.299 1.870 23.37
  WS0117 170 465 1401 4500 3.346 4.724 2.953 7.480 2.382 39.68
  WS0120 200 811 2434 3750 3.740 5.315 3.898 9.646 3.130 68.34
  WS0123 230 1254 3798 3250 4.134 5.906 4.606 10.630 3.484 95.90
  WS0126 260 1955 5864 3000 4.921 7.087 4.705 11.220 3.484 138.89
  WS0130 300 2877 8630 2500 5.512 7.874 5.453 12.992 4.232 201.72
  WS0136 360 4794 14383 2150 5.906 8.268 7.087 16.417 5.512 322.32
  WS0140 400 6564 19693 1900 6.299 8.858 6.732 15.748 5.394 353.62

Characteristics

RINGFEDER® TNS S-St

Elastic claw coupling with standard single hubs.
The intermediate ring can be replaced after shifting a shaft with fitted hub.

Notes

  • Standard material for intermediate ring: VkR
  • Installed size L must be maintained without fail. Axial displacement e.g. by thermal expansions of the connected shafts, must be taken into account through allowances for value L.

General features

  • Torsionally flexible, compensate for angular, radial and axial shaft offset
  • Intermediate rings loaded in compression
  • Elastomers available in various shore hardness degrees
  • Suitable for temperatures from –30°C to +100°C
  • Outer diameter up to 400 mm
  • Bores up to max. 160 mm
  • Torques up to TKn = 13,350 Nm / TKmax = 40,000 Nm
  • Speeds up to nmax = 15,000 rpm

INTRODUCTION

The rotationally resilient coupling of the RINGFEDER® TNS coupling 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.

Elastic intermediate ring

With the RINGFEDER®-TNS coupling, the torque is transmitted via a compressed elastic intermediate ring. The elastic intermediate ring absorbs shocks and torsional vibrations, is resistant to oil and largely insensitive to temperature.
The strength of different elastomer materials is indicated by their Shore hardness. Elastomers of different strengths are colour-coded for identification. Further details concerning the strength and load capacity are available on request in the technical data sheet.

Elastomer Materials

The elastic intermediate rings of RINGFEDER® TNS are made of butadiene-nitril-rubber (Pb82) or polyurethane (VkR, Vk60D). The black buffer (Pb82) are normally electrically conductive and therefore prevent undesirable electrostatic charges. The red (VkR) and white (Vk60D) rings 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.

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.

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 declared compliant with the European Directive 2014/34/EU (ATEX). Please contact RINGFEDER POWER TRANSMISSION regarding the declaration of conformity according to 2014/34/EU and the effects of aggressive ambient media.

 

Downloads

Product Paper Elastomer Jaw Couplings RINGFEDER® GWE, TNM, TNS, TNB

Product Paper Elastomer Jaw Couplings RINGFEDER® GWE, TNM, TNS, TNB

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS S-St

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS S-St

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS S-St, TNS S-LSt

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS S-St, TNS S-LSt

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