Elastomer Jaw Couplings TNM GTW

THREE-part design brake disk made of nodular graphite iron

The RINGFEDER^® TNM GTW is an torsionally flexible and shock-proof claw coupling with brake disc and removable claw ring. They compensate for angular as well as radial and axial shaft misalignment within fixed tolerances. The torque is transmitted through an elastic transitional ring. The elastic transitional ring made of synthetic rubber (Pb) dampens shocks and torsional vibrations, is oil-resistant and normally electrically conductive. This prevents undesirable static charging, among other things. The coupling can be used for either direction of rotation and be installed in any position. One coupling half consists of a hub and a bolt on claw ring, for easy separation of the coupled machine. With the claw ring unbolted and slid back, a check of the rotational direction of the drive is possible. In the same manner, a coupling half with the associated aggregate can be removed radially. The elastic transitional ring permits replacing of machines without axial displacement.

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Identifier	A mm	SB mm	T_KNPb82 Nm	T_BR Nm	n_max 1/min	d_1kmax mm	d_2kmax mm	C₁ mm	C₂ mm	L mm	Gw_ub kg
WN0411-250	250	12,7	230	450	4580	42	46	60	58	133	8,8
WN0411-300	300	12,7	230	450	3820	42	46	60	58	133	11,7
WN0412-300	300	12,7	380	550	3820	52	53	70	68	154	14,6
WN0414-300	300	12,7	600	1000	3820	58	65	80	78	176	18,4
WN0416-356	356	12,7	980	1600	3225	72	75	90	87	198	28,0
WN0416-406	406	12,7	980	1600	2825	72	75	90	87	198	31,0
WN0419-406	406	12,7	1650	2750	2825	85	85	100	97	221	39,1
WN0419-457	457	12,7	1650	2750	2510	85	85	100	97	221	44,0
WN0421-406	406	12,7	2400	3350	2825	92	95	110	107	243	48,8
WN0421-514	514	12,7	2400	3350	2510	92	95	110	107	243	53,6
WN0424-457	457	12,7	3700	4200	2510	102	100	120	117	267	67,0
WN0424-514	514	12,7	3700	4200	2230	102	100	120	117	267	72,0
WN0426-457	457	12,7	5800	8700	2510	120	115	140	137	310	89,4
WN0426-514	514	12,7	5800	8700	2230	120	115	140	137	310	94,2
WN0429-514	514	12,7	7550	9800	2230	130	130	150	147	334	113,5
WN0429-610	610	12,7	7550	9800	1880	130	130	150	147	334	124,5
WN0433-514	514	12,7	9900	10600	2230	150	135	160	156	356	149,3
WN0433-610	610	12,7	9900	10600	1880	150	135	160	156	356	160,3
WN0437-610	610	12,7	14000	13500	1880	170	160	180	176	399	212,7
WN0437-711	711	12,7	14000	13500	1615	170	160	180	176	399	227,9
WN0441-610	610	12,7	20500	16000	1880	185	180	200	196	441	279,5
WN0441-711	711	12,7	20500	16000	1615	185	180	200	196	441	294,3
WN0441-812	812	12,7	20500	16000	1410	185	180	200	196	441	326,4
WN0441-915	915	12,7	20500	16000	1255	185	180	200	196	441	356,8

Identifier	A inch	SB inch	T_KNPb82 ft-lbs	T_BR ft-lbs	n_max rpm	d_1kmax inch	d_2kmax inch	C₁ inch	C₂ inch	L inch	Gw_ub lbs
WN0411-250	9.843	0.50	170	332	4580	1.65354	1.81102	2.362	2.283	5.236	19.40
WN0411-300	11.811	0.50	170	332	3820	1.65354	1.81102	2.362	2.283	5.236	25.79
WN0412-300	11.811	0.50	280	406	3820	2.04724	2.08661	2.756	2.677	6.063	32.19
WN0414-300	11.811	0.50	443	738	3820	2.28346	2.55905	3.150	3.071	6.929	40.57
WN0416-356	14.016	0.50	723	1180	3225	2.83464	2.95275	3.543	3.425	7.795	61.73
WN0416-406	15.984	0.50	723	1180	2825	2.83464	2.95275	3.543	3.425	7.795	68.34
WN0419-406	15.984	0.50	1217	2028	2825	3.34645	3.34645	3.937	3.819	8.701	86.20
WN0419-457	17.992	0.50	1217	2028	2510	3.34645	3.34645	3.937	3.819	8.701	97.00
WN0421-406	15.984	0.50	1770	2471	2825	3.62204	3.74015	4.331	4.213	9.567	107.59
WN0421-514	20.236	0.50	1770	2471	2510	3.62204	3.74015	4.331	4.213	9.567	118.17
WN0424-457	17.992	0.50	2729	3098	2510	4.01574	3.937	4.724	4.606	10.512	147.71
WN0424-514	20.236	0.50	2729	3098	2230	4.01574	3.937	4.724	4.606	10.512	158.73
WN0426-457	17.992	0.50	4278	6417	2510	4.7244	4.52755	5.512	5.394	12.205	197.09
WN0426-514	20.236	0.50	4278	6417	2230	4.7244	4.52755	5.512	5.394	12.205	207.68
WN0429-514	20.236	0.50	5569	7228	2230	5.1181	5.1181	5.906	5.787	13.150	250.22
WN0429-610	24.016	0.50	5569	7228	1880	5.1181	5.1181	5.906	5.787	13.150	274.48
WN0433-514	20.236	0.50	7302	7818	2230	5.9055	5.31495	6.299	6.142	14.016	329.15
WN0433-610	24.016	0.50	7302	7818	1880	5.9055	5.31495	6.299	6.142	14.016	353.40
WN0437-610	24.016	0.50	10326	9957	1880	6.6929	6.2992	7.087	6.929	15.709	468.92
WN0437-711	27.992	0.50	10326	9957	1615	6.6929	6.2992	7.087	6.929	15.709	502.43
WN0441-610	24.016	0.50	15120	11801	1880	7.28345	7.0866	7.874	7.717	17.362	616.19
WN0441-711	27.992	0.50	15120	11801	1615	7.28345	7.0866	7.874	7.717	17.362	648.82
WN0441-812	31.968	0.50	15120	11801	1410	7.28345	7.0866	7.874	7.717	17.362	719.59
WN0441-915	36.024	0.50	15120	11801	1255	7.28345	7.0866	7.874	7.717	17.362	786.61

Images & Drawings

Dimensions

Temperature factor

Load factor of drive side

Load factor of output side

Product Characteristics

RINGFEDER^® TNM GTW

Three-part design, to change the intermediate ring without axial movement of the driven parts with brake disk in nodular cast iron. Elastic intermediate ring in different hardnesses: standard Pb72, hard Pb82.

General features

Torsionally flexible, compensate for angular, radial and axial shaft misalignment
Intermediate rings loaded in compression
Elastomers available in various shore hardness degrees
Suitable for temperatures from –30°C to +100°C
The elastic ring can be replaced without having to move the coupled machines (multi-part models)
Bores up to max. 180 mm
Torques up to T_Kn = 20,500 Nm / T_Kmax = 49,000 Nm
Speeds up to n_max = 4,580 rpm

INTRODUCTION

The rotationally resilient coupling of the RINGFEDER^® TNM series 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.

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.

Elastomer Materials

Synthetic rubbers are used for the elastic elements of the TNM couplings. As a rule these are electrically conductive and therefore prevent undesirable static charges. For the elastic elements of the RINGFEDER^® TNM coupling series, there are two different material hardnesses available as standard.

Pb 72 - nitrile butadien rubber (NBR) with a hardness of 72 Shore A.
Pb 82 - nitrile butadien rubber (NBR) with a hardness of 82 Shore A.
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.

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.