No.
: SE-20019-2
Issued on : Aug. 31 2023

Instruction Manual
Pearl Rotary JointKC Series
This instruction manual applies to products with type designations
that begin with KC, or SKCL.

This instruction manual describes important precautions for preventing
accidents and how to handle the product. To ensure safe use, be sure toread this manual and fully understand its contents before using this product.
Store this manual carefully so that it can be referred to at any time.

Pearl is a trade name of Showa Giken Industrial Co., Ltd.

1

Table of Contents
1. How to Read Nameplate (Nameplate Information) …………………………………………… P3
P3
2. For Safety ……………………………………………………………………………………… P3
P32‐1）Symbols …………………………………………………………………………………… P3
P32‐2）For safe use ……………………………………………………………………………… P3
3. Product Overview ……………………………………………………………………………… P4P43‐1）Application ………………………………………………………………………………… P4P43‐2）Information indicated by model names …………………………………………………… P4P43‐3）Service conditions ………………………………………………………………………… P6P53‐4）Precautions for use …………………………………………………………………………P6
P53‐5）Product structures and materials ………………………………………………………… P7
P63‐6）Product dimensions …………………………………………………………………………P7P73‐7）Product masses …………………………………………………………………………… P7P73‐8）Accessories ………………………………………………………………………………… P8P8
4. Transport and Storage ………………………………………………………………………… P9P94‐1）Transport …………………………………………………………………………………… P9P94‐2）Storage ………………………………………………………………………………………P9P9
5. Installation to Machinery ……………………………………………………………………… P9P95‐1）Internal pipe (for duplex only) ………………………………………………………………P9P95‐2）Installing to a roll ………………………………………………………………………… P10P105‐3）Pipe laying ………………………………………………………………………………… P11
P11
6. Removal from Machinery ……………………………………………………………………… P12
7. Operation ……………………………………………………………………………………… P13
P137‐1）Operation …………………………………………………………………………………… P13
P137‐2）Operation shutdown ……………………………………………………………………… P13
8. Inspection and Maintenance …………………………………………………………………… P148‐1）Daily inspection …………………………………………………………………………… P14
8‐2）Greasing …………………………………………………………………………………… P148‐3）Repair and replacement of consumables ………………………………………………… P14
P15
9. Troubleshooting ………………………………………………………………………………… P15
P16
10. Disposal ……………………………………………………………………………………… P16
P17
11. Product Warranty …………………………………………………………………………… P17
P16
A. Appendix - How to Repair or Replace Consumables ………………………………………… P19
A‐1）For simplex (KCL, KCLF, SKCL) ……………………………………………………………P20
P1A‐2）For duplex, stationary IP, thread connection (KC) ……………………………………… P22
P20A‐3）For duplex, rotational IP, flange connection (KCF) ……………………………………… P24
P22A‐4）For duplex, rotational IP (KCW, KCFW) ………………………………………………………
P26P242

1. How to Read Nameplate (Nameplate Information)
Ｍｏｄｅｌ Ｎａｍｅ

Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｎｏ．

Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｄａｔｅ

The nameplate attached to the product indicates the model name, manufacturing
number, and manufacturing date.

2. For Safety2‐1) Symbols
The symbols used in this instruction manual are described below.

WARNING

Indicates that failure to follow the warning message may cause bodily
accidents that may result in serious or even fatal injury.

CAUTION

Indicates that failure to follow the caution message may cause
personal injury or damage to peripheral equipment.

Instruction

Indicates that failure to follow the instruction message may cause
reduced product lifetime, product damage, or early leakage.
Indicates “prohibited actions”.

2‐2) For safe use
1. Transport, storage, installation, piping, operation, or maintenance of this product should be
carried out by an experienced expert.
2. Be sure to observe all warnings, cautions, and instructions described in each section.
3.
Never disassemble or modify this product because doing so is dangerous. We shall assume
no responsibility for any malfunctions, accidents, or the results thereof involving areassembled product after disassembly or a modified product. Also, a reassembled product after
disassembly or a modified product shall not be covered by the product warranty even if thewarranty period is still valid. This also applies to repairs done by yourself.
4. Confirm specifications (dimensions, materials, masses) indicated on individual product drawings
before staring work. Contact our sales representative for requests for product drawings.
5. Always use the latest instruction manual. You can download the latest version from our website.

33. Product Overview
3‐1) Application
A rotary joint is used for supplying fluid to or draining it from a machine rotating part called aroll, drum or cylinder, via fixed pipes.

3‐2) Information indicated by model names
Information indicated by KC series model names is described below.
The product list is shown in our catalog or on our website.
●For installation with a taper thread or a flange

Note 1) “␣” indicates a space. A model name is indicated without spaces.
2) If two or more option (part change) codes are selected, they are indicated in alphabeticalorder.
3) The selection of two or more options resulting in a long model name is indicated as type
“OKC****” to denote a customized product for administrative reasons.
(The asterisks (****) indicate a four-digit number allocated to each model.)If you have any questions, contact our sales representative.

4

●For installation with a parallel thread (simplex only)

Note 1) “␣” indicates a space. A model name is indicated without spaces.
2) If two or more option (part change) codes are selected, they are indicated in alphabeticalorder.
3) The selection of two or more options resulting in a long model name is indicated as type
“OKC****” to denote a customized product for administrative reasons. (The asterisks(****) indicate a four-digit number allocated to each model.))If you have any questions, contact our sales representative.

53‐3) Service conditions
Service Conditions of KC Series
Max.
Rotation speed Temperature(℃)(min-1)
6A～25A
1,500
0.98
100
KC Air / Gas / Water / Oil 32A～65A
1,000
Note ) The lowest pressure when used under a pressure lower than atmospheric pressure is 1.3 kPa abs (10 Torr).

Series

Fluid

Size

Pressure(MPa)3‐4） Precautions for use
Use this product by following the warnings and instructions described below.

WARNING

1. If flammable fluids leak and ignite, bodily accidents including serious oreven fatal injury, or accidents that damage peripheral equipment may
occur due to explosion or fire. Depending on the type of fluid, thisproduct may subject to restrictions due to national laws or local
regulations.
2.
This product cannot be used for food-processing machinery.
Doing so may lead to adverse health effects.

Instruction

1. Perform operation within the service conditions.
2.
Do not operate under conditions where both pressure and rotation speed
are close to the max. values. Doing so significantly reduces productlifetime.
3.
This product cannot be used in temperature conditions where theproduct ambient temperature exceeds the upper limit of the service
conditions.
4.
The product cannot be used for liquid containing solid particles (slurry)or pulverulent body. The product cannot be used for fluid that causes
corrosion on it.
5.
This product cannot be used for operation with no rotation,intermittent rotation, or low-rotation speed (a few rotations per minute).
Otherwise, fluid leakage may occur.

63‐5) Product structures and materials
Materials of Main Components(Standard Specification)

KC

Part Name
Rotor
CasingSeal Ring
O-ringMaterial
Stainless SteelCarbon Steel
Aluminum Alloy
CarbonNBRThe casing is finished with alumite
treatment (anodizing).

Note ) Component materials are indicated on product drawings.
Contact our sales representative for requests for product drawings.

3‐6) Product dimensions
Product dimensions are shown on product drawings, in our catalog, or on our website.

3‐7) Product masses(kg)

Masses of KC Series
Type
KCL
KCLF
KC/KCW
KCF/KCFW
SKCL

6A
0.15
-

8A
0.25
0.25

10A
0.37
0.90
0.37

15A
0.60
0.90
0.75
1.05
0.60

20A
0.85
1.25
1.05
1.45
0.85

25A
1.2
1.7
1.5
2.0
1.2

32A
2.3
3.0
2.6
3.3
-

40A
2.6
3.3
2.9
3.6
-

50A
5.3
6.6
6.5
7.8
-

65A
9.6
10.9
10.6
11.9
-

7

3‐8） Accessories
1. A product installed with a flange is supplied with a gasket (copper jacket) and four sets of a studbolt (SS400), a hex. nut (SS400), and a spring washer (SWRH).
Accessories（Flange Connection）
Type

Size

KCLF

10A
15A
20A
25A
32A
40A
50A
65A

KCLF
KCF
KCFW

Ｌ

(mm)

GasketStud Bolt
SpringOuter Inner ThickHex. NutK
L a b
WasherDia. Dia.
ness
24
16
3.2
M8 36 11 18 M8 type1 M8 No.2
24
16
3.2
29
20
3.2
M10 45 15 20 M10 type1 M10 No.2
34
26
3.2
49

37

3.2

M10 48 15 20 M10 type1 M10 No.2

64
79

50
62

3.2
3.2

M12 58 18 27 M12 type1 M12 No.2

ｂ

Ｋ

ａ

Ｇａｓｋｅｔ

2. A duplex, stationary IP, flange connection product (KCF) is supplied with a lock nut (right-handthread, SS400) used for securing the internal pipe.

3. A product installed with a parallel thread (SKCL) is supplied with a gasket (copper plate).
Accessories(Installation with parallel thread）
Type

Size
8A
10A

SKCL

15A
20A
25A

A
G1/4
M16×1.5
G3/8
M18×1.5
G1/2
M22×1.5
G3/4
M26×1.5G1
M30×1.5(mm)

GasketOuter Inner ThickDia. Dia.
ness
22
13.5
2
23
16.3
2
26
17
2
24
18.5
2
30
21.3
2
27.5 22.2
2
35

26.8

2

39.5
39

33.5
30.5

2
2

ＧａｓｋｅｔＧａｓｋｅｔＡ

Ａ

１０Ａ～２５Ａ

８Ａ

8

4. Transport and Storage4‐1) Transport
Transport this product by following the instructions described below.

Instruction

1. Do not subject the product to undue impact while it is being transported.
Falling down or impact causes product damage (seal ring, etc.) or earlyleakage. If the product fell down or was damaged, contact us for maintenance.
2. When transporting a product with an internal pipe, do not secure the productso that the load is directly applied to the internal pipe. Doing so may bend theinternal pipe, hindering installation to a roll. Moreover, abnormal noise or earlyleakage may result after installation.

4‐2) Storage
An improper storage method causes product damage or early leakage.
Store this product by following the instructions described below.

Instruction

1. Wrap the product before storing it to prevent the entry of foreign objects.
2. Store this product in a dry environment at 10℃ to 40℃.
3. The storage period should be within two years. If the storage period exceeds
two years, contact us for maintenance.
4. If the product is stored after use, clean and then store it under the above
conditions.

5. Installation to Machinery
Product adjustment is not required before installation.
5‐1) Internal pipe (for duplex only)
Install an internal pipe to the product according to the following instructions.

Instruction

1. When inserting an internal pipe into the product rotor, be careful so that thepipe does not hit inner parts. Failure to do so could cause inner part damage,resulting in fluid leakage.
2. When installing an internal pipe to the product, be careful not to bend the pipe.
If it is bent, product installation to a roll may be hindered. Also, vibration orabnormal noise after installation, or early leakage may result.

●Duplex, stationary IP, thread connection (KC)
Screw the internal pipe taper thread into the head. For standard specification products, thethread directions of the rotor and internal pipe are the same. Depending on the customer’s
request, the thread directions of the rotor and internal pipe may be different from each other.
Check the thread directions on the product drawings, etc. before installation.
●Duplex, stationary IP, flange connection (KCF)
Screw G thread (right-hand thread) of the internal pipe into the head, and then secure it with asupplied lock nut.
95‐2) Installing to a roll
Install the product by following the cautions and instructions described below.

WARNINGBe sure to install the product so that an inspection hole faces downward.
Also, do not block the hole. This hole is used for detecting leakage at an
early stage. If this hole is directed toward other directions or is blocked,
leakage cannot be detected at an early stage. Moreover, leaked fluid may
accumulate in a casing and ball bearings may be damaged, causing serious
bodily accidents due to resulting rotation failure.

CAUTION

In order to prevent injuries, take the product weight into consideration
before installing the product. Use equipment such as a crane as necessary.
This work should be performed by two or more persons.

Instruction

1. Remove any foreign objects in such flow passages as a pipe or a roll before
product installation. If the fluid contains foreign objects, install a strainer at
the flow passages. Foreign objects cause early leakage.
2. If the product is installed with its center misaligned or tilted, vibration orabnormal noise may result. Moreover, the product or machine equipment may
be damaged due to vibration.
3. When tightening screws or nuts, properly torque-tighten them according to thescrew type or size.
4. To prevent uneven tightening, evenly tighten flange screws in a cross pattern.
5. Perform retightening after the start of use.
6.
To prevent internal pipe damage, do not hook a webbing sling to aninternal pipe. Hook a webbing sling to a casing.

●Installation: taper thread
1. Wrap seal tape around the taper thread of the rotor.
2. Use the shank on the rotor to screw the product into a roll.
●Installation: parallel thread
1. Install the supplied gasket to the rotor.
2. Use the shank on the rotor to screw the product into a roll.
●Installation: flange
1. Install the supplied stud bolts to a roll.
2. Install the supplied gasket to a roll socket.
3. Insert the rotor spigot into the roll socket while checking that the stud bolts go through the rotor
flange holes.
4. Set the supplied spring washers on the stud bolts, and then secure the product with the supplied
nuts.

10

5‐3) Pipe laying
Perform pipe laying work by following the warnings and instructions described below.

WARNING

Use a hose for product connection suitable for characteristics of fluid used
and operating conditions (pressure, temperature). If an unsuitable hose isused, it may be damaged, causing injury to workers or damage to peripheral
equipment.

Observe the following instructions to prevent the generation of force applied tothe sides of the product, possibly causing product damage or early leakage.
1. Use a flexible metal tube or rubber hose with adequate flexibility.

Instruction

2.

Steel pipes should not be used for pipe laying.

3.

Avoid such pipe laying where heavy items such as valves are suspended
from the product.

4. When installing a flexible metal tube, slightly bend it in the rotation direction ofroll. (See the bottom left figure.)
5. Carry out pipe laying work so that excessive “tension”, “compression”,“torsion”, or “bending” is not applied to a flexible metal tube. In particular,“torsion” may significantly reduce the lifetime of the flexible metal tube.
(See the bottom right figure.)
6. Use the following table as a guideline for the flexible metal tube length.

Rotation Direction of Roll

Flexible
Metal Tube
Slightly bend the tube
in the rotation direction.

TensionCompression

OK

TorsionBending

Unacceptable
Flexible Metal Tube Length (Guideline)

(mm)

サイズ

6A～20A

25A

32A/40A

50A

65A

長さ

300～400

400～500

600～800

900～1000

1200～1300

11

6. Removal from Machinery
Remove the product by following the warnings, cautions, and instructions described
below in reverse order of the installation.

WARNING

In order to prevent bodily accidents due to residual fluid in the product orpipes, remove the product after fluid has been completely drained from theproduct or pipes and temperature has dropped to room temperature.

CAUTIION

In order to prevent injuries, take the product weight into consideration
before removing the product. Use equipment such as a crane as necessary.
This work should be performed by two or more persons.

Instruction

To prevent internal pipe damage, do not hook a webbing sling to an internal
pipe. Hook a webbing sling to a casing.

127. Operation
7‐1) Operation
Perform operation by following the warnings, cautions, and instructions described below.

WARNING

Immediately stop operation if fluid leakage is detected during operation.
If operation is continued with fluid leakage not being repaired, serious
accidents including bodily accidents may result.

During rotation or high-temperature/pressure fluid flow, keep wellaway from the product to prevent injuries or burns. Do not directly
touch rotating or hot parts during operation.

CAUTION

Instruction

1. When starting operation, check for abnormal rotation (center runout, abnormal
noise, etc.) or fluid leakage from the product while gradually increasing fluidpressure and roll rotational velocity.
2. If operation is continued under a center runout condition, product damage or
fluid leakage may result.
3. The occurrence of surging or water hammer can cause product damage or fluid
leakage. Avoid such occurrence.
4.
Do not perform dry operation (operation without fluid flow) for a long time.
The product lifetime becomes shortened.
5. If the fluid is air, add oil mist to the air.

7‐2) Operation shutdown
Follow the following instructions during operation shutdown.

Instruction

1. If the product is left as is for a long time during operation shutdown, rust may
occur, causing fluid leakage after operation restart. Clean flow passages for the
product, pipes, and roll before restarting operation.
2. If water is used as the fluid, take a measure to prevent water from freezing in
the product. Freezing may cause product damage, resulting in fluid leakage after
operation restart.
3.
Do not put your hand on or ride on the product during equipment
maintenance. Doing so may cause product damage or fluid leakage after
operation restart.

13

8. Inspection and Maintenance8‐1) Daily inspection
Perform inspection according to the following instructions.

Instruction

1. Visually check pipe connections, product connections, and the product for fluid
leakage. If leakage is detected, repair the product or replace it with a new one.
2. When replacing, use the same type of product with the same size.

8‐2) Greasing
As grease-sealed ball bearings are used, greasing is not required.

8‐3) Repair and replacement of consumables
The ball bearings and the seal face of the seal ring become worn over the course of operation time.
O-rings also deteriorate. Moreover, if the internal pipe rotates in the product, bearings that support
the pipe also become worn. Then such malfunctions as fluid leakage may occur. However, the productcan be reused by repairing or replacing worn or deteriorated parts.
Contact us for repair or parts replacement. We carry it out according to our repair program.
Depending on the products, expenses for purchasing new products may be lower than repair expenses.
Consult with us when requesting repair or replacement.
< When carrying out repair or replacement of consumables by yourself >・ Repair or replacement should be carried out by an experienced expert.
・ Perform work according to “A. Appendix - How to Repair or Replace Consumables".
・ Use our genuine parts as replacement parts.
Contact our sales representative to request genuine parts.

・ Properly dispose of waste resulting from work according to national laws or local government
regulations or ordinances.
(Attention)
If you carry out repair or replacement, we shall assume no responsibility for any productmalfunctions, equipment malfunctions or accidents resulting from such product or the results
thereof. Also, the product shall not be covered by the product warranty even if the warranty
period is still valid.

14

9. TroubleshootingThis section describes the possible causes of and countermeasures against malfunctions.
If a problem persists, contact our sales representative for assistance.
Malfunctions

Causes
A load is applied to the product due to an improper
method of pipe laying.
The seal ring is damaged.
The seal ring lifetime has been reached.
The rotor seal face is damaged.

Fluid is leaking from theinspection hole.

Countermeasures
Review the pipe laying method.
Contact us for repair.

The fluid contains foreign objects.

Clean the inside of the product, pipes, androll. Install a strainer.

The O-ring adheres to the casing.

Contact us for repair.

Operation is performed without rotation, or operationoccasionally ceases during the operation cycle.

Consult with us.

Operation is performed at low-rotation speed (a few
rotations per minute).

Consult with us.

Improper product selection.

Consult with us.

The rotation axes of a roll and the product are
misaligned with each other.

-<Flange connection type><Flange connection type>The shaft end socket of a roll is offset from the rollrotation axis.

Repair the spigot /socket.

<Thread connection type><Thread connection type>The shaft end screw hole of a roll is offset from the rollRepair the screw hole.
rotation axis.
The product has center
runout. (It is vibrating.)

Noise occurs.

The rotation axes of a roll and the product are inclined
from each other.

-<Flange connection type><Flange connection type>The shaft end socket of a roll is offset from the rollrotation axis.

Repair the installation face on the roll side
to which the product is installed.

Uneven tightening of fixing screws.

Evenly tighten the fixing screws.

<Thread connection type><Thread connection type>

The center lines of screw holes for fixing the productare inclined from the roll rotation axis.

Repair the screw hole.

The product is screwed in diagonally.
The internal pipe bends and comes in contact with theinner perimeter of the product rotor or that of the roll
shaft.
The internal pipe bent by its weight comes in contact
with the inner perimeter of the product rotor or that of
the roll shaft.
A load is applied to the product due to an improper
method of pipe laying.

Reinstall the product.

Ball bearings are damaged.

Contact us for repair.

A sliding sound is heard from the seal face.

No fault is indicated.

Straighten the bent internal pipe.

Consult with us.
Review the pipe laying method.

The rotor does not rotate. A ball bearing does not rotate.

Contact us for repair.

Oil is leaking from a ballbearing.

No fault is indicated.

Oil released from the grease seeps.

1510. Disposal
When disposing of packaging materials or products, properly dispose of them according tonational laws or local government regulations or ordinances.

11. Product Warranty
If a malfunction occurs during the warranty period, contact us or the distributor and send the
product to us. Be sure to carefully pack the product for protection before sending it.
After receiving the product, we will confirm the malfunction. If the malfunction was clearly causedby the materials of product components or the manufacturing method, we will repair the productin question or replace it with a new one free of charge.

Product Warranty Provision
1. Warranty period<New products>
One (1) year and six (6) months after shipment (from the manufacturing date) or one (1) year
after installation, whichever comes first.
<Repaired products>
Six (6) months after shipment (from the manufacturing date).
2. We charge a fee for repairs in any of the following cases.
①Failure after the warranty period has expired②Failure caused by use of the product deviating from the service conditions③Failure caused by misuse(improper storage, installation, pipe laying, operation or maintenance, etc.)④Failure caused by fluid contaminants or foreign objects in the fluid⑤Failure caused by relocation, transport, or falling of the product after delivery⑥Failure caused by disassembly, repair, or modification done by personnel other than our service
personnel⑦Failure of the product attributed to using materials or according to standards specified by thecustomer⑧Failure of the product attributed to using materials provided by the customer⑨Failure caused due to unavoidable acts of nature such as fires or other natural disasters
3. Scope of responsibility
Our responsibility shall be limited to repairs, replacements, or transport expenses covered by thisproduct warranty provision. Expenses or damages caused by said failures above shall not becovered.
4. Applicable regions
This product warranty provision shall be applicable to products installed in Japan.
Contact our sales representative if you install and use our products outside Japan.
5. Another agreement
If another product warranty agreement is made separately with us and clearly states that said
agreement shall have priority over this product warranty provision, this provision shall not beapplicable.
6. This product warranty provision shall not restrict the customer's legal rights.

16

Blank Page

17

URL https://www.sgk-p.co.jp
Export Department

Phone : +81-3-3598-1400 Fax. : +81-3-3598-2700
E-mail : sgk-tk@sgk-p.co.jp
Headquarters
7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan
Phone : +81-48-728-9460 Fax. : +81-48-728-9461
Tokyo Sales Office
2-64-11, Akabane, Kita-ku, Tokyo, 115-0045 Japan
Phone : +81-3-3598-1400 Fax. : +81-3-3598-2700
Osaka Sales Office
2-9-7, Toyosaki, Kita-ku, Osaka, 531-0072 Japan
Phone : +81-6-6371-8341 Fax. +81-6-6371-6283
Nagoya Sales Office 41-1, Higashi-Ozone-cho, Higashi-ku, Nagoya, 461-0022 Japan
Phone : +81-52-938-8825 Fax. : +81-52-938-6423

18

A. Appendix - How to Repair or Replace Consumables

19A‐1) For simplex (KCL, KCLF, SKCL)
An explanation is given below with reference to KCL (figure shown below).
The same workflow is applied to KCLF and SKCL.
９

８

７

３

６

２

４

５

１

Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ

①Rotor ②Casing ③Seal Ring ④Ball Bearing ⑤Retaining Ring
⑥Retaining Ring ⑦O-ring ⑧Washer ⑨Spring< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
3) Remove retaining ring ⑤.
4) Pull out the assembly consisting of rotor ①, ball bearings ④, retaining ring ⑥ (hereinafter called
the rotor assembly) from casing ②.
5) Remove seal ring ③, O-ring ⑦, washer ⑧, and spring ⑨ from casing ②.
6) Remove retaining ring ⑥ from rotor ①, and then pull out ball bearings ④.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 20
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑦ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.

1) Apply grease to O-ring ⑦ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑨, washer ⑧, O-ring ⑦, and seal ring ③ to casing ② in order. At this point,
install so that the pin of seal ring ③ fits into the groove of casing ②.
4) Insert ball bearings ④ into rotor ①, and then install retaining ring ⑥.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑤ to casing ②.
7) Check that rotor ① smoothly rotates.

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)21A‐2) For duplex, stationary IP, thread connection (KC)
１０

９

８

７

３

６

２

４

５

１

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ

Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ

①Rotor ②Casing ③Seal Ring ④Ball Bearing ⑤Retaining Ring
⑥Retaining Ring ⑦O-ring ⑧Washer ⑨Spring ⑩Elbow< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Remove elbow ⑩ from casing ②.
3) Remove the internal pipe from casing ②.
4) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
5) Remove retaining ring ⑤.
6) Pull out the assembly consisting of rotor ①, ball bearings ④, retaining ring ⑥ (hereinafter called
the rotor assembly) from casing ②.
7) Remove seal ring ③, O-ring ⑦, washer ⑧, and spring ⑨ from casing ②.
8) Remove retaining ring ⑥ from rotor ①, and then pull out ball bearings ④.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 22
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑦ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.

1) Apply grease to O-ring ⑦ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑨, washer ⑧, O-ring ⑦, and seal ring ③ to casing ② in order. At this point,
install so that the pin of seal ring ③ fits into the groove of casing ②.
4) Insert ball bearings ④ into rotor ①, and then install retaining ring ⑥.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑤ to casing ②.
7) Check that rotor ① smoothly rotates.
8) Screw the internal pipe into the product.
9) Wrap seal tape around the taper thread of casing ②, and then install elbow ⑩.

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)23A‐3) For duplex, stationary IP, flange connection （KCF）
１０

９

１１

８

７

３

６

２

４

５

１

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ

Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ
①Rotor ②Casing ③Seal Ring ④Ball Bearing ⑤Retaining Ring
⑥Retaining Ring ⑦O-ring ⑧Washer ⑨Spring ⑩Elbow⑪Lock Nut

< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Remove elbow ⑩ from casing ②.
3) Remove lock nut ⑪ and the internal pipe.
4) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
5) Remove retaining ring ⑤.
6) Pull out the assembly consisting of rotor ①, ball bearings ④, retaining ring ⑥ (hereinafter called
the rotor assembly) from casing ②.
7) Remove seal ring ③, O-ring ⑦, washer ⑧, and spring ⑨ from casing ②.
8) Remove retaining ring ⑥ from rotor ①, and then pull out ball bearings ④.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 24
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-ring ⑦ with a new one regardless of its condition.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.

1) Apply grease to O-ring ⑦ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
3) Install spring ⑨, washer ⑧, O-ring ⑦, and seal ring ③ to casing ② in order. At this point,
install so that the pin of seal ring ③ fits into the groove of casing ②.
4) Insert ball bearings ④ into rotor ①, and then install retaining ring ⑥.
5) Install the rotor assembly assembled in step 4) to casing ②.
6) Install retaining ring ⑤ to casing ②.
7) Check that rotor ① smoothly rotates.
8) Screw the internal pipe into the product and secure it with lock nut ⑪.
9) Wrap seal tape around the taper thread of casing ②, and then install elbow ⑩.

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)25A‐4) For duplex, rotational IP （KCW, KCFW）
An explanation is given below with reference to KCW (figure shown below).
The same workflow is applied to KCFW.
１１

１０

９

８

７

３

６

２

４

５

１

Ｉｎｔｅｒｎａｌ Ｐｉｐｅ

Ｉｎｓｐｅｃｔｉｏｎ Ｈｏｌｅ
①Rotor ②Casing ③Seal Ring ④Ball Bearing ⑤Retaining Ring
⑥Retaining Ring ⑦O-ring ⑧Washer ⑨Spring ⑩O-ring⑪Elbow< Disassembly >Carefully disassemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces of rotor ① and seal ring ③.
1) Disconnect all pipes, etc. connected to the product.
2) Remove elbow ⑪ from casing ②.
3) Remove the internal pipe from casing ②.
4) Remove O-rings ⑩ from casing ②.
5) Clamp casing ② with a vice, etc. so that rotor ① faces upward.
6) Remove retaining ring ⑤.
7) Pull out the assembly consisting of rotor ①, ball bearings ④, retaining ring ⑥ (hereinafter called
the rotor assembly) from casing ②.
8) Remove seal ring ③, O-ring ⑦, washer ⑧, and spring ⑨ from casing ②.
9) Remove retaining ring ⑥ from rotor ①, and then pull out ball bearings ④.

(＊) For a product type whose internal pipe is secured to a roll, the internal pipe comes offfrom the product when the product is removed from the roll. Therefore, steps 2) and 3)
are not required.

SHOWA GIKEN INDUSTRIAL CO., LTD

https://www.sgk-p.co.jp

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 26
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Inspection >Clean each part and check for damage. In particular, check the degree of wear and damage on theseal faces of rotor ① and seal ring ③.

< Repair and parts replacement >1) Rotor ① and seal ring ③ may be reused by lapping their seal faces in case of minor damage.
2) Replace O-rings ⑦ and ⑩ with new ones regardless of their conditions.
3) If repair or reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Assemble the product in the reverse order of disassembly.
Carefully assemble the product so that each part is not damaged. In particular, be careful not todamage the seal faces. If dust adheres to the seal face, wipe it off with thinner.

1) Apply grease to O-ring ⑦ and the inner perimeter of casing ② with which the O-ring comes incontact.
2) Apply grease to O-rings ⑩ and the O-ring grooves of casing ②, and then install O-ring ⑩.
3) Clamp casing ② with a vice, etc. so that the rotor side faces upward.
4) Install spring ⑨, washer ⑧, O-ring ⑦, and seal ring ③ to casing ② in order. At this point,
install so that the pin of seal ring ③ fits into the groove of casing ②.
5) Insert ball bearings ④ into rotor ①, and then install retaining ring ⑥.
6) Install the rotor assembly assembled in step 4) to casing ②.
7) Install retaining ring ⑤ to casing ②.
8) Check that rotor ① smoothly rotates.
9) Insert the internal pipe into the product.
10) Wrap seal tape around the taper thread of casing ②, and then install elbow ⑪.

(＊) For a product type whose internal pipe is secured to a roll, install the internal pipe to a rolland then install the product to the roll. After installing the product to the roll, perform steps
9) and 10).

Phone : +81-3-3598-1400 (Export Department) Phone : +81-3-3598-1400 (Tokyo Office)Phone : +81-6-6371-8341 (Osaka Office)Phone : +81-52-938-8825 (Nagoya Office)27