Lagersmit

- Cutter Gear Bulkhead Seal

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The Cutter Gear Bulkhead seal is designed for safeguarding the CSD’s cutter gear machine room. The Cutter Gear Bulkhead Seal is a proven, highly reliable sealing solution for 24/7 dredge operations. It is designed to keep you going and take the next step in both performance and reliability.

Conventional seals are not able to perform under harsh dredging conditions that cutter suction dredgers (CSDs) encounter every day during their activities. For this sole purpose, Lagersmit has developed a highly reliable cutter gear bulkhead sealing solution, which can handle extreme bulkhead and shaft deformations.

The Cutter Gear Bulkhead sealing system consists of a floating seal with a protective cover and lubrication system, equipped with all necessary sensors for controlling and monitoring the sealing system. The Cutter Gear Bulkhead seal is installed on large cutter shafts and is mounted on the bulkhead of the cutter gear machine room. Because the cutter shaft generally exists of several flange coupled shafts, the seal is made fully split.
The “floating” seal will follow the radial shaft movement by means of a segment with an integrated white metal slide bearing. This way, conditions for proper static alignment and run-out are met automatically.

All oil and grease connections are made on the inboard side of the seal; no extra passages through the bulkhead are needed.

Summarised: the benefits!
  • Proven seal technology that protects the cutter gear machine room
  • Flexibility and (bearing) support to manage 5 mm of radial displacement
  • Minimal wear on lip seals and the support bearing
  • The ability to operate above the water line with proper lubrication
  • Plannable maintenance while minimising risk of sudden failure
  • Continued operation if lube oil unit needs to be maintained
  • Can be installed and maintained in situ

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