Elastomer Jaw Couplings TNS S-LSt | RINGFEDER®

The RINGFEDER® TNS S-LSt 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-LSt

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CAD
Identifier
Size
TKN
Nm
nmax
1/min
d1kmax
mm
d2kmax
mm
D2
mm
C1
mm
L
mm
L2
mm
Gwub
kg
WS0105-L 50 15 15000 25 25 42 40,5 96 34 1,0
WS0108-L 85 75 9000 40 40 60 80,5 184 72 4,3
WS0110-L 100 130 7250 42 42 65 80,5 187 68,5 5,8
WS0112-L 125 250 6000 55 55 85 110,5 253 98 12,3
WS0114-L 145 400 5250 65 65 95 110,5 259 97 16,1
WS0117-L 170 630 4500 85 85 120 140,5 321 126 29,6
WS0120-L 200 1100 3750 95 95 135 140 328 124 39,6
WS0123-L 230 1700 3250 105 105 150 170 390 151 59,0
WS0126-L 260 2650 3000 125 125 180 170 400 146 85,3
WS0140-L 400 8900 1900 160 160 225 183,5 440 157 173,0
CAD Identifier
Size
TKN
ft-lbs
nmax
rpm
d1kmax
inch
d2kmax
inch
D2
inch
C1
inch
L
inch
L2
inch
Gwub
lbs
  WS0105-L 50 11 15000 0.984 0.984 1.654 1.594 3.780 1.339 2.20
  WS0108-L 85 55 9000 1.575 1.575 2.362 3.169 7.244 2.835 9.48
  WS0110-L 100 96 7250 1.654 1.654 2.559 3.169 7.362 2.697 12.79
  WS0112-L 125 184 6000 2.165 2.165 3.346 4.350 9.961 3.858 27.12
  WS0114-L 145 295 5250 2.559 2.559 3.740 4.350 10.197 3.819 35.49
  WS0117-L 170 465 4500 3.346 3.346 4.724 5.531 12.638 4.961 65.26
  WS0120-L 200 811 3750 3.740 3.740 5.315 5.512 12.913 4.882 87.30
  WS0123-L 230 1254 3250 4.134 4.134 5.906 6.968 15.354 5.945 130.07
  WS0126-L 260 1955 3000 4.921 4.921 7.087 6.968 15.748 5.748 188.05
  WS0140-L 400 6564 1900 6.299 6.299 8.858 7.520 17.323 6.181 381.40

Characteristics

RINGFEDER® TNS S-LSt

Elastic claw coupling with long 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-LSt

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS S-LSt

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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