Elastomer Jaw Couplings TNS SDD-5 | RINGFEDER®

The RINGFEDER® TNS SDD-5 coupling is a torsionally flexible, fail-safe multi-part claw coupling with standard hubs and removable intermediate part comprising the claw rings and the intermediate ring. 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. The two-parted construction of both coupling halves allows radial mounting and dismounting of the intermediate part. The intermediate ring can, therefore, be replaced without having to displace the connected machines. When the intermediate part 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.

TNS SDD-5

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CAD
Identifier
Size
TKN
Nm
nmax
1/min
d1kmin
mm
D2
mm
C1
mm
L
mm
L2
mm
DG
mm
TA
Nm
Gwub
kg
WS0710 100 130 7250 18 65 49 150 37,5 8 25 5,3
WS0712 125 250 6000 18 80 56 170 42,5 10 49 8,8
WS0714 145 400 5250 20 92 60,5 189 44 12 85 13,3
WS0717 170 630 4500 30 110 74,5 217 58 12 85 19,9
WS0720 200 1100 3750 35 135 98,5 274 82 14 135 35,3
WS0723 230 1700 3250 35 160 110 301 90 14 135 52,5
WS0726 260 2650 3000 45 180 112,5 321 88 16 210 71,5
WS0730 300 3900 2500 50 200 131,5 376 105 20 425 109,0
WS0736 360 6500 2150 55 225 172 469 142,5 24 730 179,8
WS0740 400 8900 1900 55 225 172 469 142,5 24 730 197,7
CAD Identifier
Size
TKN
ft-lbs
nmax
rpm
d1kmin
inch
D2
inch
C1
inch
L
inch
L2
inch
DG
mm
TA
ft-lbs
Gwub
lbs
  WS0710 100 96 7250 0.70866 2.559 1.929 5.906 1.476 8 18 11.68
  WS0712 125 184 6000 0.70866 3.150 2.205 6.693 1.673 10 36 19.40
  WS0714 145 295 5250 0.7874 3.622 2.382 7.441 1.732 12 63 29.32
  WS0717 170 465 4500 1.1811 4.331 2.933 8.543 2.283 12 63 43.87
  WS0720 200 811 3750 1.37795 5.315 3.878 10.787 3.228 14 100 77.82
  WS0723 230 1254 3250 1.37795 6.299 4.331 11.850 3.543 14 100 115.74
  WS0726 260 1955 3000 1.77165 7.087 4.429 12.638 3.465 16 155 157.63
  WS0730 300 2877 2500 1.9685 7.874 5.177 14.803 4.134 20 313 240.30
  WS0736 360 4794 2150 2.16535 8.858 6.772 18.465 5.610 24 538 396.39
  WS0740 400 6564 1900 2.16535 8.858 6.772 18.465 5.610 24 538 435.85

Characteristics

RINGFEDER® TNS SDD-5

Multi-part design coupling with standard flange hub (short), detachable claw rings. The intermediate ring can be replaced by removing the claw rings without moving a shaft.

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
  • 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 = 7,250 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 condition

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 SDD-5

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS SDD-5

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS SDD-5, TNS SDDL-5

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNS SDD-5, TNS SDDL-5

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