RINGFEDER TNM ELASTOMER JAW COUPLINGS NOR-MEX GBT (TNM GBT)

Elastomer Jaw coupling TNM Nor mex GBT

The Ringfeder TNM Nor-Mex GBT TNM GBT is a torsionally flexible and shock-proof claw coupling with brake drum and removable claw ring. They compensate for angular as well as radial and axial shaft misalignment within fixed tolerances. The torque is transmitted through an elastic transitional ring. The elastic transitional ring made of Perbunan (Pb) with nitrile rubber as the base material dampens shocks and torsional vibrations, is oil-proof, insensitive to temperature and normally electrically conductive.

This prevents undesirable static charging, among other things. The coupling can be used for either direction of rotation and be installed in any position. One coupling half consists of a hub and a bolt on claw ring, for easy separation of the coupled machine. With the claw ring unbolted and slid back, a check of the rotational direction of the drive is possible. In the same manner, a coupling half with the associated aggregate can be removed radially. The elastic transitional ring permits replacing of machines without axial displacement.

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 = 20,500 Nm / TKmax = 49,000 Nm

Speeds up to nmax = 4,200 rpm

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 RINGFEDER® TNM coupling series, there are two different material hardnesses available as standard.

Pb 72 - nitrile butadien rubber (NBR) with a hardness of 72 Shore A.
Pb 82 - nitrile butadien rubber (NBR) with 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.

Catalogue Elastomer Jaw Coupling Nor Mex GBT Ringfeder

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