AP Periflex CR Shaft Coupling for Dredging System
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Stromag Modified Periflex® CR Shaft Coupling for Dredging System

June 4, 2018 Marine Mining & Aggregate
Dredging System

A major manufacturer of dredging systems needed a reliable coupling solution with a small footprint for use on a new dredging vessel platform. The system features a 1200 HP diesel engine that drives a complex, custom-designed, eight-pad gearbox with primary output to a two-speed clutch that drives the system’s main pump, as well as hydraulic pump pads to operate a crane and auxiliaries.

After a thorough application review, the Stromag engineering team designed a hybrid Periflex CR (PCR) shaft coupling to meet the challenging dredging rig application requirements. The modified PCR coupling utilized a rubber element from a similar Stromag model PCS coupling and a bolt-on adaptor hub with a splined bore. Extensive torsional vibration analysis (TVA) work was completed on this complex multi-stream system of 9 driven components as the coupling was sized to fit within the tight space constraints of the customer’s gearbox bell housing. The coupling’s flexible ring effectively absorbs torsional impacts.

Stromag Modified Periflex CR Shaft Coupling

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  • Unique hybrid shaft coupling design
  • Highly flexible ring element absorbs torsional impacts
  • Torque range: 480 to 14,800 Nm (354 to 10,915 ft.lbs.)
  • Lightweight and easy to install
  • Extensive torsional vibration analysis (TVA) was completed
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