Elastomer Jaw Couplings TNB BHD-BS

Three-part design coupling with VKR buffers - Like BHD, but with brake disk

The RINGFEDER^® TNB BHD-BS / BT 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 VkR. These elastic buffers dampen shocks and torsional vibrations and are resistant to oil. Buffers made of perbunan are electrically conductive. When the claw ring 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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Identifier	A mm	SB mm	T_KN Nm	T_BR Nm	n_max 1/min	d_{1f max} mm	d_{2f max} mm	D₁ mm	C₁ mm	C₂ mm	L mm
WB0730-0630	630	30	6000	18000	2700	127	127	300	160	216	440
WB0735-0710	710	30	10500	31500	2400	146,1	158,8	350	180	261	505
WB0740-0800	800	30	16000	48000	2150	165,1	177,8	400	198	269	538
WB0745-0800	800	30	21000	63000	2150	184,2	187	450	218	269	558
WB0750-0900	900	30	28500	85500	1900	196,9	203,2	500	236,5	309	628,5
WB0755-0900	900	30	45000	135000	1800	217,5	217,5	550	256,5	309	648,5
WB0760-1000	1000	30	55000	165000	1650	228,6	232,5	600	258	329	675
WB0765-1000	1000	30	65000	195000	1500	228,6	232,5	650	286,5	329	708,5
WB0770-1200	1200	30	90000	270000	1400	263,6	271	700	327	375	804
WB0780-1400	1400	30	120000	375000	1200	292,1	304,8	800	357	395	854
WB0790-1500	1500	30	180000	540000	1100	330,2	366,9	900	407	429	944

Identifier	A inch	SB inch	T_KN ft-lbs	T_BR ft-lbs	n_max rpm	d_{1f max} inch	d_{2f max} inch	D₁ inch	C₁ inch	C₂ inch	L inch
WB0730-0630	24.803	1.181	4425	13276	2700	5.000	5.000	11.811	6.299	8.504	17.323
WB0735-0710	27.953	1.181	7744	23233	2400	5.752	6.252	13.780	7.087	10.276	19.882
WB0740-0800	31.496	1.181	11801	35403	2150	6.500	7.000	15.748	7.795	10.591	21.181
WB0745-0800	31.496	1.181	15489	46467	2150	7.252	7.362	17.717	8.583	10.591	21.968
WB0750-0900	35.433	1.181	21021	63062	1900	7.752	8.000	19.685	9.311	12.165	24.744
WB0755-0900	35.433	1.181	33191	99572	1800	8.563	8.563	21.654	10.098	12.165	25.531
WB0760-1000	39.370	1.181	40566	121699	1650	9.000	9.154	23.622	10.157	12.953	26.575
WB0765-1000	39.370	1.181	47942	143826	1500	9.000	9.154	25.591	11.280	12.953	27.894
WB0770-1200	47.244	1.181	66381	199144	1400	10.378	10.669	27.559	12.874	14.764	31.653
WB0780-1400	55.118	1.181	88508	276589	1200	11.500	12.000	31.496	14.055	15.551	33.622
WB0790-1500	59.055	1.181	132763	398288	1100	13.000	14.445	35.433	16.024	16.890	37.165

Images & Drawings

Dimensions

Temperature factor

Load factor of drive side

Load factor of output side

Product Characteristics

RINGFEDER^® TNB Type BHD-BS

Three-part design coupling with brake disk and VkR buffer. 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. 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.