TSCHAN® TNM KG
Multi-part design, to change the intermediate ring without axial movement of the
driven parts with flange, internally centred. Elastic intermediate ring in different hardnesses: standard Pb72, hard Pb82.
- Torsionally flexible, compensate for angular, radial and axial shaft misalignment
- Intermediate rings loaded in compression
- Elastomers available in various shore hardness degrees
- Suitable for temperatures from –30°C to +100°C
- The elastic ring can be replaced without having to move the coupled machines (multi-part models)
- Bores up to max. 280 mm
- Torques up to TKn = 41,000 Nm / TKmax = 97,500 Nm
- Speeds up to nmax = 5,000 rpm
The rotationally resilient coupling of the TSCHAN® TNM 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 intermediate rings 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.
Synthetic rubbers are used as base material for the elastic elements of the
TNM couplings. As a rule these are electrically conductive and therefore
prevent undesirable static charges.
For the elastic elements of the TSCHAN® TNM coupling series, there are
two different material hardnesses available as standard.
- Perbunan (Pb 72) with nitrile rubber (NBR) as the basic material
and a hardness of 72 Shore A.
- Perbunan (Pb 82) with nitrile rubber (NBR) as the basic material
and a hardness of 82 Shore A.
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.