Elastomer Jaw Couplings TNB BHDDVV

Multi-part design coupling with VKR buffers - Symmetrical configuration, Customized hubs also available

The RINGFEDER^® TNB BHDDVV - 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 shear. These buffers come in synthetic rubber (Pb) or polyurethane (Vk), as a standard VkR. These elastic buffers dampen shocks and torsional vibrations and are resistant to oil. When the claw ring is pulled back 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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Identifier	T_KN Nm	n_max 1/min	d_{1f max} mm	d_{2f max} mm	D₁ mm	D₂ mm	C₁ mm	L mm	L₂ mm	Gw_ub kg
WB1624	2500	4100	82,6	82,6	240	140	130	270	68	54
WB1630	6000	3300	104,8	104,8	300	170	160	330	85	102
WB1635	10500	2800	114,3	114,3	350	180	180	370	105	137
WB1640	16000	2450	130,2	130,2	400	210	190	390	106	200
WB1645	21000	2200	158,8	158,8	450	250	200	410	116	263
WB1650	28500	2000	165,1	165,1	500	270	228	470	130	373
WB1655	45000	1800	184,2	184,2	550	280	228	470	130	429
WB1660	55000	1650	212,73	212,73	600	330	258	530	155	595
WB1665	65000	1500	228,6	228,6	650	350	258	530	146	688
WB1670	90000	1400	228,6	228,6	700	370	298	610	175	910
WB1680	120000	1200	279,4	279,4	800	450	338	690	215	1350
WB1690	180000	1100	304,8	304,8	900	480	338	690	203	1602

Identifier	T_KN ft-lbs	n_max rpm	d_{1f max} inch	d_{2f max} inch	D₁ inch	D₂ inch	C₁ inch	L inch	L₂ inch	Gw_ub lbs
WB1624	1844	4100	3.252	3.252	9.449	5.512	5.118	10.630	2.677	119.05
WB1630	4425	3300	4.126	4.126	11.811	6.693	6.299	12.992	3.346	224.87
WB1635	7744	2800	4.500	4.500	13.780	7.087	7.087	14.567	4.134	302.03
WB1640	11801	2450	5.126	5.126	15.748	8.268	7.480	15.354	4.173	440.92
WB1645	15489	2200	6.252	6.252	17.717	9.843	7.874	16.142	4.567	579.82
WB1650	21021	2000	6.500	6.500	19.685	10.630	8.976	18.504	5.118	822.32
WB1655	33191	1800	7.252	7.252	21.654	11.024	8.976	18.504	5.118	945.78
WB1660	40566	1650	8.375	8.375	23.622	12.992	10.157	20.866	6.102	1311.75
WB1665	47942	1500	9.000	9.000	25.591	13.780	10.157	20.866	5.748	1516.78
WB1670	66381	1400	9.000	9.000	27.559	14.567	11.732	24.016	6.890	2006.21
WB1680	88508	1200	11.000	11.000	31.496	17.717	13.307	27.165	8.465	2976.24
WB1690	132763	1100	12.000	12.000	35.433	18.898	13.307	27.165	7.992	3531.81

Images & Drawings

Dimensions

Temperature factor

Load factor of drive side

Load factor of output side

Product Characteristics

RINGFEDER^® TNB Type BHDDVV

Symmetrical design for short shaft distances, a combination of two two-part design coupling hubs and VkR buffer. Easy replacement of the elastic buffer without axial movement of the coupled machines. Customized hubs and special hub materials are available on request.

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. 400 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.