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Flexible Couplings (DCB)
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Fail safe coupling for use on reciprocating machinery upto 5520 kNm.
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The Standard Range comprises
• Flywheel to shaft
• Flywheel to flang
• Shaft to shaft
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Applications
• Marine propulsion
• High power generator sets
• Reciprocating compressors |
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Features |
Benefits |
• Intrinsically fail safe
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• Ensuring continuous operation of the driveline in the unlikely event of rubber damage. |
• Control of resonant torsional vibration
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• Achieving low vibratory loads in the driveline components by selection of optimum stiffness characteristics |
• Severe shock load protection
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• Avoiding failure of the driveline under short circuit and other transient conditions. |
• Maintenance free
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• With no lubrication or adjustment required resulting in low running costs. |
• Misalignment capability
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• Allows axial and radial misalignment between the driving and driven machines. |
• Zero backlash
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• Eliminating torque amplifications through precompression of the rubber elements. |
• Noise attenuation
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• Giving quiet running conditions in sensitive applications by the elimination of metal to metal contact. |
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| Construction details |
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Each rubber element would be 5.5 inch diameter.
Each cavity would house three rubber elements.
Eight rubber element cavities radially spaced around scoupling diameter referred to as "Series 8" coupling |
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• Available options are : Series 6, Series 8, Series 10, Series 16
• 2, 3, 4 or 5 rubber elements per cavity are available. Rubber elements upto 15" diameter are manufactured.
• The inner and outer members are manufactured in stell to BS3100 Grade A1.
• Some sizes are available in SG Iron Castings to BS2789 Grade A1.
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DCB Coupling Typical Applications : |
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836.5 DCB coupling fitted between the Mirrless 12MB275 main propulsion engine and the Ulstein gearbox on the RO RO ferry M.V. Hebridean Isles.
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825.5 DCB coupling with driven hub suitable for oil injection mounting to a Reinties WAF-761 gearbox driven by a Cat 3512 on the Spanish Trawler M.V.Leon Padin II. |
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849.5 DCB couplings on a Wartsila 18V32GD diesel / gas generator sets installed in the Ringgold plant in Pennslyvania USA
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Sea-Land Quality, one of Sea Land's 12off 'Atlantic Class' vessels. Each vessel has 6off MAN B&W Holeby generatory sets fitted with 828.0 DCB limitedend float couplings. |
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625.5 DCB coupling fitted between the electric motor and the Peter Brotherhood reciprocatin gas compressor supplied to Hyundai Petrochemicals in South Koria.
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629.5 DCB coupling fitted between a General Electric L.C.I. motor and a Dresser Rand reciprocating gas compressor at Lower Colorado River Authority in the USA. |
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1.25 DCB universal joint shaft coupling fitted to a
Cummins NT55R on the Class 156 diesel multiple units in the United Kingdom.
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836.5 DCB coupling fitted between the Cat 2606 engine and the Kato alternator on the heavy lift barge 'Asian Hercules II'. The output from the alternator drives the D.C.motors which in turn provides power for the heavy lift. |
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