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Belted Drives Couplings Electromagnetic Clutches-Brakes Engineered Bearing Assemblies Gearing Gear Motors Heavy Duty Clutches and Brakes Linear Products Overrunning ClutchesBibby Torsiflex Disc Couplings for Gas Recovery Compressor Package
A major global gas compressor OEM needed reliable couplings for a new gas recovery reciprocating compressor package. The multi-stage unit featured a preliminary motor-driven flash gas compressor scrubber and two motor-driven flash gas compressors. Three different couplings were required to connect each electric motor and associated compressor.
The OEM contacted Bibby Turboflex based on a long history of successful collaborations. Bibby provided modified API 670 and ATEX compliant Torsiflex disc couplings to meet the application specifications. Bibby worked directly with the Ship & Offshore Classification Society and its inspectors to reduce lead times while ensuring that the couplings met the DNV compliance requirement. All material used for the couplings’ major torque transmitting components (including hubs, spacers, adaptor plates and primary coupling bolts) were procured from a DNV-approved mill.
The following Turboflex couplings were supplied, featuring hubs machined to accommodate customer-provided shaft end details and torsionally-tuned spacers to reduce overall coupling stiffness. All couplings were balanced to G2.5 and witness tested in-plant.
- Preliminary compressor TF260: 330mm long; 2600Nm max cont. torque; 10,000 RPM max speed
- 1st stage compressor TF400: 380mm long; 4000Nm max cont. torque; 8,500 RPM max speed
- 2nd stage compressor TF750: 470mm long; 7500Nm max cont. torque; 7,500 RPM max speed
Torsiflex couplings are specifically designed for compressor, pump, fan and blower applications. The use of plug-in spacers ensures shaft alignment is always maintained. They are easy to install and remove when maintenance is required, particularly on the bulkhead seal. The couplings also feature spark-free overload protection and an anti-flail design that protects surrounding equipment in the unlikely event of a blade failure.
