Elastomer Jaw Couplings TNB BH

One-part design with VKW buffers for highest torque transmission

The RINGFEDER^® TNB BH coupling is a torsionally flexible, puncture proof claw coupling. It compensates for angular, radial and axial shaft misalignments within defined limits. The coupling transmits torque through elastic buffers loaded in compression. These buffers come in synthetic rubber (Pb) or polyurethane (Vk), as a standard VkW. These elastic buffers dampen shocks and torsional vibrations and are resistant to oil. The coupling is suitable for use in every direction of rotation and installation position.

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Identifier	Size	T_KN Nm	n_max 1/min	d_1kmax mm	D₁ mm	D₂ mm	D₆ mm	C₁ mm	L mm	L₂ mm	Gw_ub kg
WB0130	300	8600	3300	135	300	210	320	160	330	103	101
WB0135	350	15000	2800	160	350	240	370	180	370	123	145
WB0140	400	23000	2450	180	400	270	420	198	406	134	210
WB0145	450	31000	2200	200	450	300	470	218	446	154	275
WB0150	500	41200	2000	220	500	330	530	236,5	487	163,5	371
WB0155	550	66000	1800	240	550	350	580	256,5	527	183,5	456
WB0160	600	80000	1650	250	600	375	630	258	530	180	565
WB0165	650	94000	1500	260	650	400	680	286,5	587	202,5	705
WB0170	700	130000	1400	300	700	450	740	327	668	234	985
WB0180	800	180000	1200	330	800	490	840	357	728	264	1285
WB0190	900	260000	1100	360	900	540	940	407	828	307	1790

Identifier	Size	T_KN ft-lbs	n_max rpm	d_1kmax inch	D₁ inch	D₂ inch	D₆ inch	C₁ inch	L inch	L₂ inch	Gw_ub lbs
WB0130	300	6343	3300	5.31495	11.811	8.268	12.598	6.299	12.992	4.055	222.67
WB0135	350	11064	2800	6.2992	13.780	9.449	14.567	7.087	14.567	4.843	319.67
WB0140	400	16964	2450	7.0866	15.748	10.630	16.535	7.795	15.984	5.276	462.97
WB0145	450	22865	2200	7.874	17.717	11.811	18.504	8.583	17.559	6.063	606.27
WB0150	500	30388	2000	8.6614	19.685	12.992	20.866	9.311	19.173	6.437	817.92
WB0155	550	48680	1800	9.4488	21.654	13.780	22.835	10.098	20.748	7.224	1005.31
WB0160	600	59006	1650	9.8425	23.622	14.764	24.803	10.157	20.866	7.087	1245.61
WB0165	650	69332	1500	10.2362	25.591	15.748	26.772	11.280	23.110	7.972	1554.26
WB0170	700	95884	1400	11.811	27.559	17.717	29.134	12.874	26.299	9.213	2171.56
WB0180	800	132763	1200	12.9921	31.496	19.291	33.071	14.055	28.661	10.394	2832.94
WB0190	900	191768	1100	14.1732	35.433	21.260	37.008	16.024	32.598	12.087	3946.28

Images & Drawings

Dimensions

Temperature factor

Load factor of drive side

Load factor of output side

Product Characteristics

RINGFEDER^®-TNB Type BH

One-part design with VkW buffer for highest torque transmission. Easy replacement of the elastic buffer without axial movement of the coupled machines.

General features

Torsionally flexible, compensate for angular, radial and axial shaft misalignment
Buffers loaded in compression
Buffers can be replaced radially without having to move the coupled machines
Elastomers available in various shore hardness degrees
Suitable for temperatures from –30°C to +100°C
Outer diameter up to 900 mm
Bores up to max. 360 mm
Torques up to T_Kn = 260,000 Nm / T_Kmax = 780,000 Nm
Speeds up to n_max = 4,100 rpm

INTRODUCTION

The rotationally resilient, failsafe claw coupling RINGFEDER^® TNB 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 buffers 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

The elastic RINGFEDER^® TNB buffers are made of butadiene-nitril-rubber (Pb82) or polyurethane (VkR, VkW). The black buffer (Pb82) are normally electrically conductive and therefore prevent undesirable electrostatic charges. The red (VkR) and white (VkW) buffers 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.

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.