Flexible element comprising:
1 Natural rubber in the form of a cross.
2 A floating aluminium or steel star, whose arms are bonded to the rubber.
Mountings:
Two aluminium bosses, bonded to the rubber which will be attached to one of the machines.
Two bosses bonded to the rubber which will be attached to the other machine.
The TETRAFLEX coupling is designed with the following features:
– Binary symmetry which allows considerable conical misalignment.
– The rubber is precompressed from manufacture which limits operation under tension.
Advantages:
The floating star allows:
– Increased torque capacity without reducing the axial flexibility, hence reduced size for a given torque.
– Rotation at higher speeds as the star ensures that the arms are anchored centrifugally.
– A good torque/speed ratio.
Flexible element comprising a variable number of flexible bushes, depending on the torque to be transmitted.
1 Inner with tapped or smooth holes (normal mounting or on fly wheel).
2 Precompressed natural rubber bonded to inner 1 and to outer the half-cylinders 3.
3 Half-cylinders bonded to the rubber.
4 Outer housing ensuring precompression of rubber by exerting pressure on the half-cylinders 3.
Steel disks:
5 Flange to which the inner studs are attached (normal mounting).
6 Disk to which the studs are attached (flywheel mounting).
Die cast steel hubs:
7 The two hubs are identical. They may be bolted to disks 5 or 6 depending on the mounting used.
Flexible element:
1 Six fairly hard natural rubber shaped support blocks, on the inside edge of the outer ring of the coupling.
Flange:
2 inside flange has six arms which fit axially between the blocks by “blind axial” assembly.
Outer ring:
3 Ring with teeth that hold the blocks.
Standard SAE fixing and centring.
Flexible element:
1 Precompressed natural rubber.
2 Bonded metal spacers.
3 Precompression band (to be removed after installation).
Flange:
4 Die-cast steel specially bored to fit the separate hub.
5 Universal separate hub (not supplied by PAULSTRA).
Flexible element 1 composed of:
2 Natural rubber ring.
3 Internal armature bonded to the rubber.
4 External collar force fitted to the rubber.
Flanges 5: die-cast steel fixed on to the internal armature 3 and collar 4.
