Elastomer Jaw Couplings TNS SDDL-5 | RINGFEDER®

The RINGFEDER® TNS SDDL-5 coupling is a torsionally flexible, fail-safe multi-part claw coupling with long 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 SDDL-5

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CAD
Identifier
Size
TKN
Nm
nmax
1/min
d1kmax
mm
D2
mm
C1
mm
L
mm
L2
mm
DG
mm
TA
Nm
Gwub
kg
WS0710-L 100 130 7250 45 65 110 272 98,5 8 25 8,5
WS0712-L 125 250 6000 55 80 110 278 96,5 10 49 13,1
WS0714-L 145 400 5250 65 92 110 288 93,5 12 85 18,5
WS0717-L 170 630 4500 75 110 140 348 123,5 12 85 29,7
WS0720-L 200 1100 3750 95 135 170 417 153,5 14 135 51,3
WS0723-L 230 1700 3250 110 160 170 421 150 14 135 71,4
WS0726-L 260 2650 3000 125 180 210 516 185,5 16 210 110,5
WS0730-L 300 3900 2500 140 200 210 533 183,5 20 425 147,8
WS0736-L 360 6500 2150 160 225 250 625 220,5 24 730 228,5
WS0740-L 400 8900 1900 160 225 250 625 220,5 24 730 246,3
CAD Identifier
Size
TKN
ft-lbs
nmax
rpm
d1kmax
inch
D2
inch
C1
inch
L
inch
L2
inch
DG
mm
TA
ft-lbs
Gwub
lbs
  WS0710-L 100 96 7250 1.772 2.559 4.331 10.709 3.878 8 18 18.74
  WS0712-L 125 184 6000 2.165 3.150 4.331 10.945 3.799 10 36 28.88
  WS0714-L 145 295 5250 2.559 3.622 4.331 11.339 3.681 12 63 40.79
  WS0717-L 170 465 4500 2.953 4.331 5.512 13.701 4.862 12 63 65.48
  WS0720-L 200 811 3750 3.740 5.315 6.693 16.417 6.043 14 100 113.10
  WS0723-L 230 1254 3250 4.331 6.299 6.693 16.575 5.906 14 100 157.41
  WS0726-L 260 1955 3000 4.921 7.087 8.268 20.315 7.303 16 155 243.61
  WS0730-L 300 2877 2500 5.512 7.874 8.268 20.984 7.224 20 313 325.84
  WS0736-L 360 4794 2150 6.299 8.858 9.843 24.606 8.681 24 538 503.76
  WS0740-L 400 6564 1900 6.299 8.858 9.843 24.606 8.681 24 538 543.00

Characteristics

RINGFEDER® TNS SDDL-5

Multi-part design coupling with long flange hub, detachable claw rings. The intermeiate 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
  • 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 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 SDDL-5

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNS SDDL-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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