11

目次目次11

1. STERN KEEPER CO., LTD.

2. STERN TUBE SEAL TYPE-SKC

1-1. Company Profile

1-2. Products

CONTENTS

22

SKSK

1.STERN KEEPER CO., LTD.

STERN KEEPER is alive in the sea.

33

SKSK案内案内

1-1.Company Profile

Name of Company: Stern Keeper Co., Ltd.

Established: 4th April, 1989.

Head Office: 4-36, Tsujido-Kandai 2-chome, Fujisawa, Kanagawa, Japan

Capital: 25 million J.P. Yen.

President: Mr. Kenichi Suzuki.

Main Products: Stern keeper Type-SKC.Rudder Seal Type-SKR.Bulk-head Seal Type-SKH and SKH-Ⅱ.

Main Stock Holder: Keeper Co., Ltd. (100%)

Customer: Japanese government office ships, (Defense Navy ships, Coast Guard ships, Research ships, ice breaker) Training ships for universities and high schools. Major of Japanese shipyards, ship owners, marine engine makers and shaft makers.

44

SKSK沿革沿革

History

As demanded, Keeper Co., Ltd. started to supply Viton rubber ringsfor oil lubricating stern tube seal.

1968:

Developed water lubricating system stern tube seal. 1977:

Supplied water lubricating seal for destroyer of Japan Maritime Self Defense Force .

1980:

Supplied water lubricating seal for patrol vessel of Japan Coast Guard.1983:

Developed bulkhead seal assembly SKH Type.1988:

Independence from Keeper Co., Ltd.1989:

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SKSK製品製品

1-2.Products

① STERN KEEPER TYPE-SKC

③ RUDDER SEAL TYPE-SKR

② SKS-BINDING

④ BULK-HEAD SEAL TYPE-SKH

66

SKCSKC型型

① STERN KEEPER TYPE-SKC

We have a lot of reference not only government ships but passenger, car ferry, fishing boat and also work boats.Actually the shaft sleeve range is 65 to 736 mm in diameter.

77

SKSSKSバインディングバインディング

② SKS-BINDING

SLEEVESEAL RING

SKS BINDING

SKS BINDING

SHAFT

The SKS-BINDING is new type of corrosion preventive technique and it is applied to SHAFT KIND 1 propeller shafts in place of conventional Rubber Binding.

The SKS-BINDING is special resin rework technique which is able to contribute to production cost reduction and reliability improvement.

88

SKRSKR型型

③ RUDDER SEAL TYPE-SKRRUBBER SEAL RINGSEAL RING

CASINGBAND

RU

DD

ER

SH

AFT

99

SKHSKH型型

④ BULK-HEAD SEAL TYPE-SKH

SEAL RING

Simple installation, maintenance free and long life durability.This seal is designed to work automatically under an emergency case only.Under normal condition, the seal does not work, once sea water invade either side of bulkhead, the pressure of sea water works just like switch.TEFLON SHEET

CASING

SEA WATER

DRAFT PRESSURE

1010

目次目次22

1. STERN KEEPER CO., LTD.

2. STERN TUBE SEAL TYPE-SKC

1-1. Company Profile

1-2. Products

CONTENTS

1111

SKCSKC紹介紹介

2.TYPE-SKC

Simple design, easy installation and high performance.

With its advanced superior quality and simplified design STERN KEEPER offers safer, more practical and durable service in cost-saving performance for modern marine application.

STERN KEEPER is the latest Stern-tube Sealing System of sea-water lubrication type which is superseding conventional gland packing systems.

STERN KEEPER is a successful fruit of our long years experience and advanced techniques which have resolved a number of problems and inconveniences with the mechanical seal type stern-tube sealing systems in the market today. New adaptation of Seal Ring that can be used its both ends and safety Contractible Seal for emergency replacement works etc are assuring easy handling reliable performance.

1212

SKCSKC構造構造

2-1.Structure explanation

1313

SKCSKC特長①特長①

2-2.Feature１. EASY INSTALLATION

Just mount all assembly parts passing through shaft and tighten screw bolts in order of that for Casing①, Band② and Seal Ring ③.(Refer to the drawing in page 12) After piping, the installation sealing system is completed.

２. SPECIAL THRUST-LOAD HOLDING FACEASSURES HIGHER PERFORMANCE

The Rotating Seal Ring is made of the synthetic rubber developed specially for high sealing efficiency. Specially designed Thrust-load holding face placed on both end of Rotating Seal Ring keeps constant pressure on sealing face even if the shaft gives axial movement.

３. CONVENIENT SEAL RING AND SPARE ROTATING SEAL RINGWhen the seal face is worn and water leakage increased, the function is renewed by using reverse face of the Seal Ring and replacing with the Rotating Seal Ring which mounted on the shaft as spare one.

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SKCSKC特長②特長②

2-2.Feature

４. SPACE SAVING

Designed compact and with minimized full length, the installation space is greatly saved.

５. CONTRACTIBLE SEAL WITH SAFETY PERFORMANCE

Thick rubber Seal Ring is pressed to ward the shaft by air pressure and protect seawater invading in during the replacement works of Rotating Seal Ring. (Be sure not to have it contracted while the shaft is rotating.)

６. ELECTROLYTIC CORROSION PREVENTION

To minimize electrolytic corrosion insulation bush and packing etc are used.

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SKCSKC特長③特長③

2-2.Feature

７. NO WEAR ON SHAFTThe shaft is never worn as there is no direct sliding portion in sealing unit against the shaft.

８. LOW MAINTENANCE COSTIn addition to less consumable assembly parts, the Seal Ring can be re-used by re-grinding its worn surface.

９. INSTALLATION WITHOUT PULLING OUT SHAFTThe Seal Ring and Rotating Seal Ring are available to be installed without pulling out the shaft.

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SKCSKC配管配管

2-3.Piping

STERN KEEPER

ISOLATION TUBE

RUBBER HOSE← Compressed Air

← Water Supply

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SKCSKCバルブ操作バルブ操作((通常通常))

2-4. Normal Operation of Valve

1818

SKCSKCバルブ操作バルブ操作((非常非常))

2-4.Emergency Operation of Valve

1919

SKCSKC取付要領①取付要領①

2-5.Attachment point

Bolt and nut in the above sketch are fastened in order of ①,②,③

Liquid packing is coated

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SKCSKC取付要領②取付要領②

2-5.Attachment point

Arrange the clearance ｢A｣ and perpendicularity ｢a｣ per shaft diameter in the table.

Arrange pipes per pipe system drawing

2121

SKCSKCチェックアイテム①チェックアイテム①

2-6.Check Item

Confirm that there is no damage or dent on the sleeve surface and the end face of stern tube boss.

Liquid packing is coated on the end face of stern tube boss.

Confirm that there is no mistake in direction of assembly parts.

Anti-corrosing paint is coated smoothly on the designated area of sleeve.

The seal system is set so that “T”mark comes to upright position.

Sealing face and surface of sleeve are thinly coated with oil or grease.

Check during assembling

2222

SKCSKCチェックアイテム②チェックアイテム②

2-6.Check Item

Take care that no dirt or foreign matters enter into sealing system during assemble work.

Confirm that there is no mistake on piping work.

Hose made of rubber is used for water piping.

Confirm that there is no damage on sealing face and no step on spitted part of seal face.

Confirm copper pipe is put through insulation bush and the then fixed on the hull.

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SKCSKCチェックアイテム③チェックアイテム③

2-6.Check Item

Confirm that Contractible Seal is worked by compressed air.

Confirm that there is no abnormal leakage.

Confirm that standing air in Seal Unit is let out from Plug.

Confirm that the valve Aa1 is opened so that Contractible Seal is not activated.

Confirm that cooling water is supplied into bearing and Seal Unit.

Check before operation

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SKCSKCメンテナンス①メンテナンス①

2-7.MaintenanceCheck FrequencyCheck Frequency Check ItemCheck Item CountermeasureCountermeasure

Once a dayOnce a day

Confirmation of water flow of Confirmation of water flow of cooling water along bearing. cooling water along bearing.

Confirm pressure on gauge of Confirm pressure on gauge of pipe.pipe.

Confirmation of leakage volume.Confirmation of leakage volume.

Optimum volume is 0Optimum volume is 0～～50ℓ/day. 50ℓ/day. If it exceeds this, take measure If it exceeds this, take measure mentioned in in“4mentioned in in“4--5. FAILURE 5. FAILURE AND COUNTERMEASURE”.AND COUNTERMEASURE”.

Confirmation of Seal Ring Confirmation of Seal Ring temperature.temperature.

Less than 50℃ is normal Less than 50℃ is normal condition. When heat is raised condition. When heat is raised up to the temperate nobody up to the temperate nobody touches by hand, take measure touches by hand, take measure mentioned in“4mentioned in“4--5. FAILURE 5. FAILURE AND COUNTERMEASURE”.AND COUNTERMEASURE”.

2525

SKCSKCメンテナンス②メンテナンス②

2-7.MaintenanceCheck FrequencyCheck Frequency Check ItemCheck Item CountermeasureCountermeasure

Once every three Once every three monthsmonths

Confirmation of Confirmation of ANTICORROSING ANTICORROSING PLUG.PLUG.

When scale of t part is less than When scale of t part is less than 1mm(new one 10mm)1mm(new one 10mm)

replace with new one.replace with new one.

After one yearAfter one year

Pressure gauge of Pressure gauge of VALVE UNITVALVE UNIT

If there are failure or damage, replace If there are failure or damage, replace with new one.with new one.

SEAL RINGSEAL RINGIf there is leakage over 100ℓ/day, reIf there is leakage over 100ℓ/day, re--grind it.grind it.

ROTATING SEAL RINGROTATING SEAL RINGIf there is leakage over 100ℓ/day, If there is leakage over 100ℓ/day, replace with new one.replace with new one.

CONTRACTIBLE SEALCONTRACTIBLE SEALIf pressure goes down abnormally, If pressure goes down abnormally, repeat to operate and turn off 4 or 5 repeat to operate and turn off 4 or 5 times. times.

2626

SKCSKCメンテナンス③メンテナンス③

2-7.Maintenance

Check FrequencyCheck Frequency Check ItemCheck Item CountermeasureCountermeasure

After two to After two to three yearsthree years

SEAL RINGSEAL RING ReRe--grind.grind.

ROTATING SEAL RINGROTATING SEAL RING Replace with new one.Replace with new one.

O RINGO RING Replace with new one.Replace with new one.

CONTRACTIBLE SEALCONTRACTIBLE SEAL

If pressure goes down widely If pressure goes down widely repeat to operate and turn off 4 repeat to operate and turn off 4 or 5 times. If pressure fall doesn’t or 5 times. If pressure fall doesn’t recover, disassemble and clean it.recover, disassemble and clean it.

VACUUM EJECTOR of VACUUM EJECTOR of VALVE UNITVALVE UNIT

Clean up the vacuum ejector.

2727

SKCSKCメンテナンス④メンテナンス④

2-7.MaintenanceCheck FrequencyCheck Frequency Check Item Countermeasure

In case of inspection pulling out the shaft. (After five years.)

Seal Unit Clean up every parts.

SEAL RING Re-grind

ROTATING SEAL RING Replace with new one.

CONTRACTIBLE SEAL Replace with new one.

O RING Replace with new one.

BAND Replace with new one.

WATER HOSE Replace with new one.

VACCUM EJECTOR of VALVE UNIT

Clean up the vacuum ejector.

Anticorrosing paintTake off old paint on the SLEEVE and “TAR-EPOXY RESIN” is painted on it.

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SKCSKCメンテナンス⑤メンテナンス⑤

2-7.MaintenanceCheck FrequencyCheck Frequency Check ItemCheck Item CountermeasureCountermeasure

In case of inspection pulling out the shaft. (After five years.)

If SLEEVE is re-grinded, you must take mentioned below.

SEAL RING Replace with new one. (new size)

ROTATING SEAL RING Replace with new one. (new size)

BAND Replace with new one. (new size)

In case of In case of dismantling Seal dismantling Seal Unit.Unit.

O RING, PACKINGS & O RING, PACKINGS & HOSE.HOSE.

If there are failure or damage, it If there are failure or damage, it must be again replaced.must be again replaced.

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SKCSKC故障発生時①故障発生時①

2-8.Failure and Countermeasure

FAILUREFAILURE CAUSECAUSE CONTERMEASURECONTERMEASURE

Leakage is Leakage is too much.too much.

Wear of Rotating Seal Wear of Rotating Seal Ring.Ring.

Wear of Seal Ring.Wear of Seal Ring.

Cram up of sludge in Cram up of sludge in sealing faces.sealing faces.

StepStep--down difference in down difference in split part of sealing face.split part of sealing face.

Optimum leakage volume is 0Optimum leakage volume is 0～～50ℓ/day. Even if 50ℓ/day. Even if leakage is more than 500ℓ/day, instant leakage is more than 500ℓ/day, instant adjustment is not necessary. Volume of leakage adjustment is not necessary. Volume of leakage would periodically increase or decrease, so you would periodically increase or decrease, so you must wait about 3 days and if leakage dose not must wait about 3 days and if leakage dose not become smaller, then you take under mentioned become smaller, then you take under mentioned measures.measures.

1)Polish the worn sealing face of Seal Ring with 1)Polish the worn sealing face of Seal Ring with a sandpaper.a sandpaper.

2)If volume of leakage dose not decrease after 2)If volume of leakage dose not decrease after above mentioned adjustment, you must replace above mentioned adjustment, you must replace Rotating Seal Ring and use reverse face of Seal Rotating Seal Ring and use reverse face of Seal Ring. When reRing. When re--grinding of sealing face of Seal grinding of sealing face of Seal Ring is done, you must replace the Rotating Seal Ring is done, you must replace the Rotating Seal Ring.Ring.

3)Make difference in level of split type portion 3)Make difference in level of split type portion smoothly by using sandpaper.smoothly by using sandpaper.

3030

SKCSKC故障発生時②故障発生時②

2-8.Failure and Countermeasure

FAILUREFAILURE CAUSECAUSE CONTERMEASURECONTERMEASURE

Temperature Temperature of Seal Ring of Seal Ring is too high.is too high.

Cooling water is not Cooling water is not supplied to the bearing.supplied to the bearing.

Check water tubing circuit (conjunction & Check water tubing circuit (conjunction & valves) to confirm right water supply.valves) to confirm right water supply.

CONTRACTIBLE CONTRACTIBLE SEAL is contracted.SEAL is contracted.

Check compression air supply tubing to let Check compression air supply tubing to let air out of CONTRACTIBLE SEAL and stop air out of CONTRACTIBLE SEAL and stop air.air.

Air is standing in Seal Air is standing in Seal Unit.Unit.

Let air out of Seal Unit from PLUG.Let air out of Seal Unit from PLUG.

A Fishing net is wound A Fishing net is wound around on the shaft.around on the shaft.

Remove fishing net. Remove fishing net.

Sealing faces are not Sealing faces are not bedded in. bedded in.

Open the PLUG and decrease sea water Open the PLUG and decrease sea water temperature in Seal Unit. Wait well bedding temperature in Seal Unit. Wait well bedding in effect of sealing face.(20in effect of sealing face.(20～～30hr). Pouring 30hr). Pouring on sealing parts with cool water from on sealing parts with cool water from outside is fairly effective in cooling.outside is fairly effective in cooling.

3131

SKCSKC取付実績取付実績

2-9.Supply Record

TypeType--AA 30ships30ships

TypeType--B&BⅡB&BⅡ 340ships340ships

TypeType--CC 2200ships2200ships

Naval fleetNaval fleet 200200shipsships

Fishing boat Fishing boat 700700shipsships

Cargo boatCargo boat 11501150shipsships

FerryFerry 150150shipsships

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SKCSKC型式承認型式承認

2-10. Class Approval

JG: Japanese GovernmentNK: Nippon Kaiji Kyokai

ABS: American Bureau of ShippingBV: Bureau VeritasCCS: China Classification Society KR: Korean Register of ShippingRS: Russian Maritime Register of Shipping

Under an applicationLR: Lloyd's Register of Shipping

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SKSK得意先得意先

Main Customer

Japan Maritime Self Defense Force

Japan Meteorological Agency

Japan Coast Guard

Fisheries Agency

Mitsubishi Heavy Industries

Mitsui Engineering

Kawasaki Shipbuilding

Ishikawajima-Harima

Universal Shipbuilding

Niigata

Akasaka

Daihatsu

Hanshin

Yanmar

Kamome propeller

Nakashima propeller

COSCO (ZHOUSHAN) SHIPYARD

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終了終了

THANK YOU