Elastomer Jaw Couplings TNS SDDL-5

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.

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Technical Data & CAD Models

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

Identifier	Size	T_KN ft-lbs	n_max rpm	d_1kmax inch	D₂ inch	C₁ inch	L inch	L₂ inch	D_G mm	T_A ft-lbs	Gw_ub 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

Images & Drawings

Dimensions

Elastic intermediate ring

Electrical conductivity

Temperature

Reduction in torque shocks

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