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Bibby Transmissions has integrated the characteristics of its Turboflex couplings into a range of Torsiflex disc couplings for more general applications on process pumps, compressors and motors.

The Torsiflex range offers a typical operating life of 20-30 years; it is zero maintenance and is compliant with API 610 and ATEX.

In addition, because the Torsiflex couplings employ the same design as the larger Turboflex range, they can transmit very high torque.

This feature offers the potential benefit of downsizing, plus cost savings on some bore sizes.

The Torsiflex design offers the same performance and reliability as Bibby’s Turboflex disc couplings, which are used in demanding high-end applications on power station drives, gas turbines, oil platforms and vertical pumps.

The Bibby design effectively drives in friction, rather than shear, to the disk coupling.

This is achieved by using large aircraft-quality bolts on the disk hubs: bolts that are larger than those used by competitors.

As a result of this design, the pack of blades in the coupling can be clamped harder together to prevent fretting.

In contrast, the use of smaller bolts does not allow the same torque to be achieved across the blades, so fretting is more likely to occur, and with it the possibility of premature failure of the coupling.

The Torsiflex range is rated for operation at loads from 0.26kNm to 85kNm, and speeds from 8,000rev/min to 3,600rev/min (smallest to largest).

The couplings can be installed and the flexible elements (disc packs) changed without disturbing adjacent machinery.

Torsionally stiff and backlash free, the Torsiflex also incorporates an anti-flail feature.

It will also accept significant levels of angular, radial and axial misalignment without any loss of operating performance.

The Bibby Torsiflex has no moving parts, so requires no maintenance.

They do not need lubrication, but the presence of oil in the environment will not effect the operation of the coupling.

The Torsiflex range is equally at home in environments where hostile working conditions are encountered.

In these environments, the couplings can be adapted using a variety of special materials and surface coatings.

Similarly, for applications where the environment is hazardous, spark-free ATEX-rated versions of the couplings are available.

For applications with load ratings in excess of the capacity of the Torsiflex range, Bibby Transmissions offers Turboflex couplings.

These couplings are used in challenging applications in oil and gas, water treatment, power generation, marine and pumping applications.

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