Elastomer Jaw Couplings TNS S-BT | RINGFEDER®

The RINGFEDER® TNS S-BT coupling is a torsionally flexible, fail-safe claw coupling with brake drum. 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. The coupling is usable in every sense of rotation. The brake drum should be assigned to the load side.

TNS S-BT

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CAD
Identifier
Size
A
mm
SB
mm
TKN
Nm
TBR
Nm
d1kmax
mm
d2kmax
mm
C1
mm
C2
mm
L
mm
Gwub
kg
WS0510-200 100 200 75 130 260 48 42 49,5 49,5 125 9,4
WS0512-200 125 200 75 250 310 55 55 56,5 56,5 145 12,0
WS0514-200 145 200 75 400 730 65 65 61 61 160 15,2
WS0514-250 145 250 95 400 730 65 65 61 61 160 19,8
WS0517-250 170 250 95 630 1200 85 85 75 75 190 26,7
WS0517-315 170 315 118 630 1350 85 85 75 75 190 36,1
WS0520-315 200 315 118 1100 2450 95 95 99 99 245 48,0
WS0520-400 200 400 150 1100 2650 95 95 99 99 245 64,6
WS0523-400 230 400 150 1700 3800 105 105 110 110 270 75,8
WS0523-500 230 500 190 1700 3800 105 105 110 110 270 103,1
WS0526-500 260 500 190 2650 9000 125 125 112,5 112,5 285 121,6
WS0530-630 300 630 236 3900 10500 140 140 131,5 131,5 330 199,4
WS0530-710 300 710 265 3900 11000 140 140 131,5 131,5 330 255,9
WS0536-630 360 630 236 6500 26000 150 150 172 172 417 261,0
WS0536-710 360 710 265 6500 26000 150 150 172 172 417 304,5
WS0540-710 400 710 265 8900 35000 160 160 163,5 163,5 400 317,6
CAD Identifier
Size
A
inch
SB
inch
TKN
ft-lbs
TBR
ft-lbs
d1kmax
inch
d2kmax
inch
C1
inch
C2
inch
L
inch
Gwub
lbs
  WS0510-200 100 - 200-75 7.874 2.953 96 192 1.890 1.654 1.949 1.949 4.921 20.72
  WS0512-200 125 - 200-75 7.874 2.953 184 229 2.165 2.165 2.224 2.224 5.709 26.46
  WS0514-200 145 - 200-75 7.874 2.953 295 538 2.559 2.559 2.402 2.402 6.299 33.51
  WS0514-250 145 - 250-95 9.843 3.740 295 538 2.559 2.559 2.402 2.402 6.299 43.65
  WS0517-250 170 - 250-95 9.843 3.740 465 885 3.346 3.346 2.953 2.953 7.480 58.86
  WS0517-315 170 - 315-118 12.402 4.646 465 996 3.346 3.346 2.953 2.953 7.480 79.59
  WS0520-315 200 - 315-118 12.402 4.646 811 1807 3.740 3.740 3.898 3.898 9.646 105.82
  WS0520-400 200 - 400-150 15.748 5.906 811 1955 3.740 3.740 3.898 3.898 9.646 142.42
  WS0523-400 230 - 400-150 15.748 5.906 1254 2803 4.134 4.134 4.331 4.331 10.630 167.11
  WS0523-500 230 - 500-190 19.685 7.480 1254 2803 4.134 4.134 4.331 4.331 10.630 227.30
  WS0526-500 260 - 500-190 19.685 7.480 1955 6638 4.921 4.921 4.429 4.429 11.220 268.08
  WS0530-630 300 - 630-236 24.803 9.291 2877 7744 5.512 5.512 5.177 5.177 12.992 439.60
  WS0530-710 300 - 710-265 27.953 10.433 2877 8113 5.512 5.512 5.177 5.177 12.992 564.16
  WS0536-630 360 - 630-236 24.803 9.291 4794 19177 5.906 5.906 6.772 6.772 16.417 575.41
  WS0536-710 360 - 710-265 27.953 10.433 4794 19177 5.906 5.906 6.772 6.772 16.417 671.31
  WS0540-710 400 - 710-265 27.953 10.433 6564 25815 6.299 6.299 6.437 6.437 15.748 700.19

Characteristics

RINGFEDER® TNS S-BT

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

Notes

  • Version with extended hub possible
  • 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
  • Recommendation: Assign brake drum to load side


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
  • Coupling outer diameter up to 400 mm, brake drum outer diameter up to 710 mm
  • Bores up to max. 160 mm
  • Torques up to TKn = 13,350 Nm / TKmax = 40,000 Nm
  • Speeds up to nmax = 4,200 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-BT

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS S-BT

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS S-BT

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS S-BT

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