TSCHAN®-TNB Type BHD
Combination of a one-part design and a multi-part design coupling hub and VkR buffer. Easy replacement of the elastic buffer without axial movement of the coupled machines.
- 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 1,275 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
The rotationally resilient, failsafe claw coupling TSCHAN 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
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.
The elastic TSCHAN 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.
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
certified in accordance with the European Directive 94/9/EC, also known as ATEX
95. Please contact RINGFEDER POWER TRANSMISSION regarding the declaration of conformity according to
94/9/EC and the effects of aggressive ambient media.