Elastomer Jaw Couplings TNB BHD-BS | RINGFEDER®

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.

TNB BHD-BS

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CAD
Identifier
A
mm
SB
mm
TKN
Nm
TBR
Nm
nmax
1/min
d1f max
mm
d2f 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
CAD Identifier
A
inch
SB
inch
TKN
ft-lbs
TBR
ft-lbs
nmax
rpm
d1f max
inch
d2f 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

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 TKn = 260,000 Nm / TKmax = 780,000 Nm
  • Speeds up to nmax = 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.

 

Downloads

Product Paper Elastomer Jaw Couplings RINGFEDER® GWE, TNM, TNS, TNB

Product Paper Elastomer Jaw Couplings RINGFEDER® GWE, TNM, TNS, TNB

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNB BHD-BS

Tech Paper Elastomer Jaw Couplings RINGFEDER® TNB BHD-BS

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNB BHD-BS

Instruction Manual Elastomer Jaw Couplings RINGFEDER® TNB BHD-BS

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