Elastomer Jaw Couplings TNS S-LSt

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.

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Identifier	Size	T_KN Nm	n_max 1/min	d_1kmax mm	d_2kmax mm	D₂ mm	C₁ mm	L mm	L₂ mm	Gw_ub 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

Identifier	Size	T_KN ft-lbs	n_max rpm	d_1kmax inch	d_2kmax inch	D₂ inch	C₁ inch	L inch	L₂ inch	Gw_ub 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

Images & Drawings

Dimensions

Elastic intermediate ring

Electrical conductivity

Temperature

Reduction in torque shocks

Product 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 T_Kn = 13,350 Nm / T_Kmax = 40,000 Nm
Speeds up to n_max = 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.