TNM LE elastomer jaw couplings
Version with a one-piece coupling hub and a screw-down flange.
Reliable jaw coupling with screw-down flange for a wide range of industrial applications
Jaw coupling with screw-down flange
The RINGFEDER TNM LE is an extremely reliable and versatile jaw coupling with a screw-down flange. It has been specially developed for a variety of industrial applications. This coupling is characterised by its torsionally flexible properties and its ability to compensate for angular, radial and axial shaft misalignments within defined tolerances.
The torque is transmitted via elastic buffers that are under compressive stress, made of synthetic rubber (Perbunan, Pb), and are interconnected in an intermediate ring. This flexible intermediate ring made of synthetic rubber (Perbunan, Pb) plays a crucial role in damping shocks and torsional vibrations. In addition, it is electrically conductive, which prevents unwanted static charging.
The RINGFEDER TNM LE coupling can be used in any direction of rotation and any mounting position – further highlighting its adaptability to different areas of application. It is a reliable solution for ensuring performance and operational safety in demanding industrial environments.
RINGFEDER TNM jaw couplings are suitable for universal use in general mechanical engineering applications. They are primarily used as input and output couplings for gearboxes, in pumps and screw compressor drives, and in combined heat and power plants.
Benefits
- Torsionally flexible
- Able to damp torsional vibrations
- Blind pluggable
- Wide range of variants thanks to the modular design concept
- Individual elastomers combined to form an intermediate ring
- Max. torques: 27 – 97,500 Nm
- Easily replaceable elastomers
Basic information
For each clutch size, there is a choice of two material hardnesses (Pb72 and Pb82) for the intermediate rings. The higher the hardness of the intermediate ring, the higher the transmissible torque. However, it also means that the torsional spring stiffness is higher. The nominal torque of the coupling TKN – as shown in the data table – can be transmitted constantly. The maximum coupling torque TKmax can be transmitted up to 105 times but only in short bursts, e.g. during start-up.
When using the Pb82 hard intermediate ring, please be aware that the maximum coupling torque is lower for multi-piece designs (TKGmax) and that this must be taken into account when sizing the coupling. In this case, the frictional connection between the coupling hub and claw ring limits the value of TKmax.
Experts carry out torsional vibration analyses (TVA) to optimise the dynamic response of the drive train. This requires a detailed description of the vibration system both in terms of the mechanical structure (spring-mass system) and the system-specific excitation functions. Coupling-specific data – such as stiffness, damping and mass moments of inertia – can be provided on request.
Features
- Torsionally flexible, compensates for angular, radial and axial shaft misalignment
- Individual buffers under compressive stress are connected to form an intermediate ring.
- Intermediate rings available in various degrees of Shore hardness (standard Pb72, hard Pb82), suitable for temperatures from -30°C to +100°C
- Flexible intermediate ring can be changed by moving the connected units.
