Elastomer Jaw Couplings TNM ETW

Two-part design with brake disk - Brake disk made of nodular graphite iron

The Coupling RINGFEDER^® TNM ETW is an torsionally flexible and shock-proof claw coupling with brake disc. 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, insensitive to temperature 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.

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Identifier	A mm	SB mm	T_KNPb82 Nm	T_BR Nm	n_max 1/min	d_{1f max} mm	d_{2f max} mm	D₁ mm	C₁ mm	L mm	Gw_ub kg
WN0311-250	250	12,7	230	450	4580	41,3	46,1	112	60	123,5	8,8
WN0311-300	300	12,7	230	450	3820	41,3	46,1	112	60	123,5	11,7
WN0312-300	300	12,7	380	550	3820	49,9	54	128	70	143,5	14,6
WN0314-300	300	12,7	600	1000	3820	56	62	148	80	163,5	18,4
WN0316-356	356	12,7	980	1600	3225	68	69,9	168	90	183,5	28,0
WN0316-406	406	12,7	980	1600	2825	68	69,9	168	90	183,5	31,0
WN0319-406	406	12,7	1650	2750	2825	82,6	82,6	194	100	203,5	39,1
WN0319-457	457	12,7	1650	2750	2510	82,6	82,6	194	100	203,5	44,0
WN0321-406	406	12,7	2400	3350	2825	88,4	92,1	214	110	224	48,8
WN0321-514	514	12,7	2400	3350	2510	88,4	92,1	214	110	224,0	53,6
WN0324-457	457	12,7	3700	4200	2510	96,6	104,8	240	120	244	67,0
WN0324-514	514	12,7	3700	4200	2230	96,6	104,8	240	120	244	72,0
WN0326-457	457	12,7	5800	8700	2510	114,3	114,3	265	140	285,5	89,4
WN0326-514	514	12,7	5800	8700	2230	114,3	114,3	265	140	285,5	94,2
WN0329-514	514	12,7	7550	9800	2230	117,5	117,5	295	150	308	113,5
WN0329-610	610	12,7	7550	9800	1880	117,5	117,5	295	150	308	124,5
WN0333-514	514	12,7	9900	10600	2230	139,7	139,7	330	160	328,0	149,3
WN0333-610	610	12,7	9900	10600	1880	139,7	139,7	330	160	328	160,3
WN0337-610	610	12,7	14000	13500	1880	158,8	158,8	370	180	368	212,7
WN0337-711	711	12,7	14000	13500	1615	158,8	158,8	370	180	368	227,9
WN0341-610	610	12,7	20500	16000	1880	174,7	177,8	415	200	408	279,5
WN0341-711	711	12,7	20500	16000	1615	174,7	177,8	415	200	408	294,3
WN0341-812	812	12,7	20500	16000	1410	174,7	177,8	415	200	408	326,4
WN0341-915	915	12,7	20500	16000	1255	174,7	177,8	415	200	408	356,8

Identifier	A inch	SB inch	T_KNPb82 ft-lbs	T_BR ft-lbs	n_max rpm	d_{1f max} inch	d_{2f max} inch	D₁ inch	C₁ inch	L inch	Gw_ub lbs
WN0311-250	9.843	0.50	170	332	4580	1.626	1.815	4.409	2.362	4.862	19.40
WN0311-300	11.811	0.50	170	332	3820	1.626	1.815	4.409	2.362	4.862	25.79
WN0312-300	11.811	0.50	280	406	3820	1.965	2.126	5.039	2.756	5.650	32.19
WN0314-300	11.811	0.50	443	738	3820	2.205	2.441	5.827	3.150	6.437	40.57
WN0316-356	14.016	0.50	723	1180	3225	2.677	2.752	6.614	3.543	7.224	61.73
WN0316-406	15.984	0.50	723	1180	2825	2.677	2.752	6.614	3.543	7.224	68.34
WN0319-406	15.984	0.50	1217	2028	2825	3.252	3.252	7.638	3.937	8.012	86.20
WN0319-457	17.992	0.50	1217	2028	2510	3.252	3.252	7.638	3.937	8.012	97.00
WN0321-406	15.984	0.50	1770	2471	2825	3.480	3.626	8.425	4.331	8.819	107.59
WN0321-514	20.236	0.50	1770	2471	2510	3.480	3.626	8.425	4.331	8.819	118.17
WN0324-457	17.992	0.50	2729	3098	2510	3.803	4.126	9.449	4.724	9.606	147.71
WN0324-514	20.236	0.50	2729	3098	2230	3.803	4.126	9.449	4.724	9.606	158.73
WN0326-457	17.992	0.50	4278	6417	2510	4.500	4.500	10.433	5.512	11.240	197.09
WN0326-514	20.236	0.50	4278	6417	2230	4.500	4.500	10.433	5.512	11.240	207.68
WN0329-514	20.236	0.50	5569	7228	2230	4.626	4.626	11.614	5.906	12.126	250.22
WN0329-610	24.016	0.50	5569	7228	1880	4.626	4.626	11.614	5.906	12.126	274.48
WN0333-514	20.236	0.50	7302	7818	2230	5.500	5.500	12.992	6.299	12.913	329.15
WN0333-610	24.016	0.50	7302	7818	1880	5.500	5.500	12.992	6.299	12.913	353.40
WN0337-610	24.016	0.50	10326	9957	1880	6.252	6.252	14.567	7.087	14.488	468.92
WN0337-711	27.992	0.50	10326	9957	1615	6.252	6.252	14.567	7.087	14.488	502.43
WN0341-610	24.016	0.50	15120	11801	1880	6.878	7.000	16.339	7.874	16.063	616.19
WN0341-711	27.992	0.50	15120	11801	1615	6.878	7.000	16.339	7.874	16.063	648.82
WN0341-812	31.968	0.50	15120	11801	1410	6.878	7.000	16.339	7.874	16.063	719.59
WN0341-915	36.024	0.50	15120	11801	1255	6.878	7.000	16.339	7.874	16.063	786.61

Images & Drawings

Dimensions

Temperature factor

Load factor of drive side

Load factor of output side

Product Characteristics

RINGFEDER^® TNM ETW

Two part design 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 only with move a part of the coupled machines (two part design).
Bores up to max. 190 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 Material

Synthetic rubbers are used as base material 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.