目次1
目次
1
CONTENTS
1. STERN KEEPER CO., LTD.
1-1. Company Profile
1-2. Products
2. STERN TUBE SEAL TYPE-SKC
1
SK
1.STERN KEEPER CO., LTD.
STERN KEEPER is alive in the sea.
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SK案内
SK
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.
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SK沿革
SK
沿革
History
1968:
As demanded, Keeper Co., Ltd. started to supply Viton rubber rings
for oil lubricating stern tube seal.
1977: Developed water lubricating system stern tube seal.
1980: Supplied water lubricating seal for destroyer of Japan Maritime Self
Defense Force .
1983: Supplied water lubricating seal for patrol vessel of Japan Coast Guard.
1988: Developed bulkhead seal assembly SKH Type.
1989: Independence from Keeper Co., Ltd.
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SK製品
SK
製品
1-2.Products
① STERN KEEPER TYPE-SKC
② SKS-BINDING
③ RUDDER SEAL TYPE-SKR
④ BULK-HEAD SEAL TYPE-SKH
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SKC型
SKC
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.
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SKSバインディング
SKS
バインディング
② SKS-BINDING
SLEEVE
SEAL RING
SKS BINDING
SHAFT
SKS BINDING
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
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to production cost reduction and reliability improvement.
SKR型
SKR
型
③ RUDDER SEAL TYPE-SKR
SEAL RING
RUBBER SEAL RING
RUDDER SHAFT
CASING
BAND
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SKH型
SKH
型
④ BULK-HEAD SEAL TYPE-SKH
CASING
DRAFT
PRESSURE
SEA
WATER
TEFLON SHEET
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.
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目次2
目次
2
CONTENTS
1. STERN KEEPER CO., LTD.
1-1. Company Profile
1-2. Products
2. STERN TUBE SEAL TYPE-SKC
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SKC紹介
SKC
紹介
2.TYPE-SKC
Simple design, easy installation and high performance.
STERN KEEPER is the latest Stern-tube Sealing System of seawater 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.
With its advanced superior quality and simplified design STERN
KEEPER offers safer, more practical and durable service in costsaving performance for modern marine application.
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SKC構造
SKC
構造
2-1.Structure explanation
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SKC特長①
SKC
特長①
2-2.Feature
１. 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 FACE
ASSURES 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 RING
When 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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SKC特長②
SKC
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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SKC特長③
SKC
特長③
2-2.Feature
７. NO WEAR ON SHAFT
The shaft is never worn as there is no direct sliding portion in sealing
unit against the shaft.
８. LOW MAINTENANCE COST
In addition to less consumable assembly parts, the Seal Ring can be reused by re-grinding its worn surface.
９. INSTALLATION WITHOUT PULLING OUT SHAFT
The Seal Ring and Rotating Seal Ring are available to be installed without
pulling out the shaft.
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SKC配管
SKC
配管
2-3.Piping
← Compressed Air
RUBBER HOSE
ISOLATION TUBE
← Water Supply
STERN KEEPER
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SKCバルブ操作
SKC
バルブ操作((通常
通常))
2-4. Normal Operation of Valve
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SKCバルブ操作
SKC
バルブ操作((非常
非常))
2-4.Emergency Operation of Valve
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SKC取付要領①
SKC
取付要領①
2-5.Attachment point
Liquid packing is coated
Bolt and nut in the above sketch are fastened in order of ①,②,③
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SKC取付要領②
SKC
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
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SKCチェックアイテム①
SKC
チェックアイテム①
2-6.Check Item
Check during assembling
Confirm that there is no damage or dent on the sleeve surface
and the end face of stern tube boss.
Anti-corrosing paint is coated smoothly on the designated area of
sleeve.
Liquid packing is coated on the end face of stern tube boss.
The seal system is set so that “T”mark comes to upright position.
Confirm that there is no mistake in direction of assembly parts.
Sealing face and surface of sleeve are thinly coated with oil or
grease.
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SKCチェックアイテム②
SKC
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 damage on sealing face and no step on
spitted part of seal face.
Confirm that there is no mistake on piping work.
Confirm copper pipe is put through insulation bush and the then fixed
on the hull.
Hose made of rubber is used for water piping.
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SKCチェックアイテム③
SKC
チェックアイテム③
2-6.Check Item
Check before operation
Confirm that Contractible Seal is worked by compressed air.
Confirm that the valve Aa1 is opened so that Contractible Seal is not
activated.
Confirm that there is no abnormal leakage.
Confirm that cooling water is supplied into bearing and Seal Unit.
Confirm that standing air in Seal Unit is let out from Plug.
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SKCメンテナンス①
SKC
メンテナンス①
2-7.Maintenance
Check Frequency
Check Item
Confirmation of water flow of
cooling water along bearing.
Countermeasure
Confirm pressure on gauge of
pipe.
Optimum volume is 0～
0～50ℓ/day.
If it exceeds this, take measure
Confirmation of leakage volume.
mentioned in in“4in“4-5. FAILURE
AND COUNTERMEASURE”.
Once a day
Confirmation of Seal Ring
temperature.
Less than 50℃ is normal
condition. When heat is raised
up to the temperate nobody
touches by hand, take measure
mentioned in“4in“4-5. FAILURE
AND COUNTERMEASURE”.
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SKCメンテナンス②
SKC
メンテナンス②
2-7.Maintenance
Check Frequency
Check Item
Once every three
months
Confirmation of
ANTICORROSING
PLUG.
When scale of t part is less than
1mm(new one 10mm)
replace with new one.
Pressure gauge of
VALVE UNIT
If there are failure or damage, replace
with new one.
SEAL RING
If there is leakage over 100ℓ/day, reregrind it.
ROTATING SEAL RING
If there is leakage over 100ℓ/day,
replace with new one.
CONTRACTIBLE SEAL
If pressure goes down abnormally,
repeat to operate and turn off 4 or 5
times.
After one year
Countermeasure
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SKCメンテナンス③
SKC
メンテナンス③
2-7.Maintenance
Check Frequency
After two to
three years
Check Item
Countermeasure
SEAL RING
ReRe
-grind.
ROTATING SEAL RING
Replace with new one.
O RING
Replace with new one.
CONTRACTIBLE SEAL
If pressure goes down widely
repeat to operate and turn off 4
or 5 times. If pressure fall doesn’t
recover, disassemble and clean it.
VACUUM EJECTOR of
VALVE UNIT
Clean up the vacuum ejector.
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SKCメンテナンス④
SKC
メンテナンス④
2-7.Maintenance
Check Frequency
In case of
inspection pulling
out the shaft.
(After five years.)
Check Item
Countermeasure
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 paint
Take off old paint on the
SLEEVE and “TAR-EPOXY
RESIN” is painted on it.
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SKCメンテナンス⑤
SKC
メンテナンス⑤
2-7.Maintenance
Check Frequency
Check Item
Countermeasure
If SLEEVE is re-grinded, you must take mentioned below.
In case of inspection
SEAL RING
pulling out the shaft.
(After five years.)
ROTATING SEAL RING
In case of
dismantling Seal
Unit.
Replace with new one. (new size)
Replace with new one. (new size)
BAND
Replace with new one. (new size)
O RING, PACKINGS &
HOSE.
If there are failure or damage, it
must be again replaced.
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SKC故障発生時①
SKC
故障発生時①
2-8.Failure and Countermeasure
FAILURE
Leakage is
too much.
CAUSE
CONTERMEASURE
Optimum leakage volume is 0～
0～50ℓ/day. Even if
leakage is more than 500ℓ/day, instant
adjustment is not necessary. Volume of leakage
would periodically increase or decrease, so you
Wear of Rotating Seal
must wait about 3 days and if leakage dose not
Ring.
become smaller, then you take under mentioned
measures.
Wear of Seal Ring.
1)Polish the worn sealing face of Seal Ring with
a sandpaper.
Cram up of sludge in
2)If volume of leakage dose not decrease after
sealing faces.
above mentioned adjustment, you must replace
Rotating Seal Ring and use reverse face of Seal
Step--down difference in Ring. When reStep
re-grinding of sealing face of Seal
split part of sealing face. Ring is done, you must replace the Rotating Seal
Ring.
3)Make difference in level of split type portion
smoothly by using sandpaper.
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SKC故障発生時②
SKC
故障発生時②
2-8.Failure and Countermeasure
FAILURE
CAUSE
CONTERMEASURE
Cooling water is not
Check water tubing circuit (conjunction &
supplied to the bearing. valves) to confirm right water supply.
CONTRACTIBLE
SEAL is contracted.
Temperature Air is standing in Seal
of Seal Ring Unit.
A Fishing net is wound
is too high.
around on the shaft.
Sealing faces are not
bedded in.
Check compression air supply tubing to let
air out of CONTRACTIBLE SEAL and stop
air.
Let air out of Seal Unit from PLUG.
Remove fishing net.
Open the PLUG and decrease sea water
temperature in Seal Unit. Wait well bedding
in effect of sealing face.(20～
face.(20～30hr). Pouring
on sealing parts with cool water from
outside is fairly effective in cooling.
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SKC取付実績
SKC
取付実績
2-9.Supply Record
Type--A
Type
30ships
Type--B&BⅡ
Type
340ships
Type--C
Type
Naval fleet
200ships
Fishing boat
700ships
Cargo boat
1150ships
Ferry
150ships
2200ships
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SKC型式承認
SKC
型式承認
2-10. Class Approval
JG: Japanese Government
NK: Nippon Kaiji Kyokai
ABS: American Bureau of Shipping
BV: Bureau Veritas
CCS: China Classification Society
KR: Korean Register of Shipping
RS: Russian Maritime Register of Shipping
Under an application
LR: Lloyd's Register of Shipping
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SK得意先
SK
得意先
Main Customer
Japan Maritime Self Defense Force
Universal Shipbuilding
Japan Coast Guard
Niigata
Japan Meteorological Agency
Akasaka
Fisheries Agency
Hanshin
Mitsubishi Heavy Industries
Daihatsu
Mitsui Engineering
Yanmar
Ishikawajima-Harima
Kamome propeller
Kawasaki Shipbuilding
Nakashima propeller
COSCO (ZHOUSHAN) SHIPYARD
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終了
THANK YOU
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