No.
: SE-20024-3
Issued on : Aug. 31 2023

Instruction Manual
Pearl Swivel Joint
A/AS/B/C/CS SeriesThis instruction manual applies to products with type designations thatbegin with A, AS, B, C, or CS. (This manual does not apply to movable pipelines
or products with type designations that begin with AO, ASO, BO, CO, or CSO.)

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
P3
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 ……………………………………………………………………………… P43‐1）Application ………………………………………………………………………………… P4P43‐2）Information indicated by model names …………………………………………………… P43‐3）Service conditions ………………………………………………………………………… P5P5P63‐4）Precautions for use ………………………………………………………………………… P5P73‐5）Product structures and materials ………………………………………………………… P6
P83‐6）Product dimensions ………………………………………………………………………… P7
3‐7）Product masses …………………………………………………………………………… P8P73‐8）Product torque ……………………………………………………………………………… P9P8
4. Transport and Storage ………………………………………………………………………… P10P94‐1）Transport …………………………………………………………………………………… P10P9P104‐2）Storage ……………………………………………………………………………………… P9P10
5. Installation …………………………………………………………………………………………P9P11
6. Removal …………………………………………………………………………………………...P12P11
7. Operation ……………………………………………………………………………………… P13
P117‐1）Operation …………………………………………………………………………………… P13
P117‐2）Operation shutdown ……………………………………………………………………… P13P12
8. Inspection and Maintenance …………………………………………………………………… P14P128‐1）Daily inspection …………………………………………………………………………… P14P128‐2）Greasing …………………………………………………………………………………… P14P138‐3）Repair and replacement of consumables ………………………………………………… P15
P14
9. Troubleshooting ………………………………………………………………………………… P16
P15
10. Disposal ……………………………………………………………………………………… P17
P15
11. Product Warranty …………………………………………………………………………… P17
P17
A. Appendix - How to Repair or Replace Consumables ………………………………………… P19

2

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 swivel joint is used when it is necessary to rotate a pipe for transporting fluid or move it
up/down, left/right, or forward/backward.

3‐2) Information indicated by model names
Information indicated by each series model names is described below.
The product list is shown in our catalog or on our website.

4Note. 1) “␣” indicates a space. A model name is indicated without spaces.
2) Electroless nickel plating is applied to the shaft and body when option (surface treatment)
code K is selected. This is applicable to the A series (65A to 100A) and C series (all sizes).
3) The dust seal is replaced with felt when option (special purpose) code D is selected.
4) The grease nipple is replaced by a plug with liquid packing applied to the thread when
option (special purpose) code L is selected.
5) Flanges of the C and CS series are JIS10K SOP FF as standard.
If you have any questions, contact our sales representative.

3‐3) Service conditions
Service Conditions of Each Series
SeriesConnection

Material(main parts)

Main
Seal

Style

Size

Pressure
(MPa)

Max.
Temperature
(℃)

1～6

10A～100A

4.1

100

1～6

10A～40A
50A
65A, 80A
10A～15A
20A～32A
40A

4.1
4.1
2.1
13.7
9.0
6.0

1～6

40A～300A

2.1

100

1～6

40A～200A

2.1

100

A

Taper Thread Ductile Cast Iron
(Rc)
Carbon SteelO-ringNBRAS

Taper Thread(Rc)

Stainless SteelO-ringNBR

B

Taper Thread(Rc)

Carbon SteelO-ringNBR

CFlangeCarbon SteelCS

FlangeStainless SteelO-ringNBR
O-ring
NBR

1～3
1～3

100

100

Note. 1) The main seal material for the standard specification of each series is NBR, and the
maximum service temperature is 100℃.
2) The tables above on the next page indicate guidelines for the service temperature rangesof the main seal and grease. They are not the joint service temperature range.
3) 20A to 40A of B series can be used for up to 13.7 MPa under the following conditions.
①When the swivel operation is not performed while fluid is flowing at a pressure of the
maximum value in the table above to 13.7 MPa.
②When the swivel operation is performed while fluid is flowing at a pressure of the
maximum value in the table above to 13.7 MPa, but the frequency of swivel operation
is below our standard value.
Contact our sales representative for more information.

5

Main seal material and service
temperature range (guideline)

Grease type and service
temperature range (guideline)

Option Code(Main Seal)

Material

Temperature
Range （℃）

Option Code(Grease)Brand

Material

Application

Temperature
Range (℃)␣

NBR
(Standard)-20～100␣Alvania S1(Standard)

Lithiumbased

General purpose-35～120

H

Eponex SR2

Lithium
complex

General purpose-20～200

N-

Siliconbased

General purpose-40～200X--30～260-

Fluorinebased

High-temperatureY

Oxygen-15～150

Food-processing
machinery-20～160

-

-

E
H
M
N
P
Q
V
X
Z

EPDM
Fluoro-rubber
for steam-40～120

Perfluoroelastomer
Silicon rubber
PTFE seal
PTFE-coatedfluoro-rubber～200-50～150～180

Fluoro-rubber
KalrezOther-10～160
～250
-

～160

～160

Z

-

Aluminum
complexG

Customer's
designation-

Kalrez® is a registered trademark of E.I. du Pont de Nemours and Company.
Alvania S1 is a product of Shell Lubricants Japan K.K..
Eponex SR2 is a product of Idemitsu Kosan Co., Ltd..

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

WARNING

Instruction

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.
1. Perform operation within the service conditions.
2.
The standard specification main seal (NBR) cannot be used forphosphoric ester-based hydraulic oil, chlorinated hydrocarbon-based
hydraulic oil, organic solvents, or acids.
3.
If a PTFE seal is used as a main seal, the product cannot be used undernegative pressure. If used under such pressure, the seal may be
deformed, causing fluid leakage.
4.
The product cannot be used for fluid that causes corrosion on it.
5. As an elastic seal is used, use of the product in consecutive rotation condition
is not appropriate. The product lifetime becomes shortened.
6. The bearing section is high precision machined and there is no clearance (play).
Shaft movement is restricted in the swivel direction. When introducing a hose
for connecting the product or a movable pipeline for using multiple products,
carefully consider the motion of the hose and the movable pipeline before
selecting a style.

63‐5) Product structures and materials

A
AS

Materials of Main Components(Standard Specification)
Part Name
Material
Shaft
Ductile Cast Iron
A
Carbon Steel
Body
Main Seal
NBR
Shafts and bodies of sizes 10A to 50A are
finished with electroless nickel plating.
Heat-resistant paint is applied to external
parts of sizes 65A to 100A.

Materials of Main Components(Standard Specification)
Part Name
Shaft
AS
Body
Main Seal

Material
Stainless Steel
NBR

B
Materials of Main Components(Standard Specification)
B

Part Name
Shaft
Body
Main Seal

Material
Carbon SteelNBR

The shaft and body are finished withelectroless nickel plating.

Materials of Main Components(Standard Specification)

C

C

CS

Part Name
Shaft
Body
Main Seal

Material
Carbon Steel
NBR

Heat-resistant paint is applied toexternal parts.

Materials of Main Components(Standard Specification)
Part Name
Shaft
CS
Body
Main Seal

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

Material
Stainless Steel
NBR

7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 A Series
Size
10A
15A
20A
25A
32A
40A
50A
65A
80A
100A

Style
1
0.6
0.55
1.3
1.2
2.3
2.2
4.5
9.8
9.0
14.5

2
0.65
0.6
1.4
1.3
2.8
2.7
5.2
11.8
11.0
17.6

3
0.75
0.7
1.6
1.5
3.5
3.3
6.3
14.3
13.5
20.5

4
1.0
0.9
2.2
2.1
3.8
3.8
8.0
17.6
16.6
26.5

5
1.1
1.0
2.3
2.2
4.5
4.4
9.2
20.2
19.2
29.5

6
1.2
1.1
2.5
2.4
5.2
5.0
10.2
22.6
21.8
32.3

(kg)

Masses of AS Series
Size
10A
15A
20A
25A
32A
40A
50A
65A
80A

1
0.6
0.55
1.3
1.2
2.0
2.1
4.0
5.5
7.0

2
0.7
0.65
1.55
1.5
2.8
2.8
5.5
6.2
7.6

Style
3
4
0.9
1.3
0.85
1.3
1.9
3.1
1.75
3.0
3.8
4.2
3.6
4.7
7.3
6.9
8.6
-

5
1.4
1.4
3.1
3.0
4.9
5.2
-

6
1.6
1.6
3.4
3.3
5.6
5.8
-

Masses of B Series (kg)
Size
10A
15A
20A
25A
32A
40A

1
0.8
0.7
1.9
1.8
2.2
2.3

Style
2
1.0
0.9
2.2
2.1
2.8
3.4

3
1.2
1.1
2.8
2.7
3.4
4.4

Masses of C Series(Standard Specification)
Size
40A
50A
65A
80A
100A
125A
150A
200A
250A
300A

(kg)

Style
1
5.3
7.2
10.4
11.3
15.6
25
39
59
87
120

2
5.5
7.6
11.0
12.1
17.0
27
42.5
67
101
140

3
5.7
8.0
11.5
13.0
18.5
29
46
74
114
160

4
7.2
10.6
15.3
17.0
24.6
39.5
65
104
152
220

5
7.4
11.0
15.8
17.9
26.0
42
68.5
112
168
240

6
7.6
11.3
16.4
18.7
27.4
44
72
119
182
260

Masses of CS Series(Standard Specification)
Size
40A
50A
65A
80A
100A
125A
150A
200A

(kg)

Style
1
5.3
7.2
10.4
11.3
15.6
25
39
59

2
5.4
7.5
10.9
12.0
16.9
27.4
42.5
68

3
5.6
7.9
9.0
12.9
18.5
30
46
76.5

4
7.2
10.6
15.3
17.0
24.6
39.5
65
104

5
7.4
11.0
15.8
17.9
26.0
42
68.5
112

6
7.6
11.3
16.4
18.7
27.4
44
72
119

Note ) Standard specification flanges of the C and CS series are JIS10K.

83‐8）Product torque＊Dynamic torque varies depending on product storage conditions, storage period, or fluid types.
＊Starting torque is larger than dynamic torque. Although starting torque is even larger whenwringing occurs, it does not indicate any fault.
＊Data are typical values measured based on in-house test standards. They are not guaranteed values.

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

CAUTIONTo transport a product that weighs over 25 kg, use appropriate lifting
equipment to prevent injuries.

Instruction

Do not subject the product to undue impact while it is being transported. Falling
down or impact causes product damage (grease nipple etc.) or early leakage.
If the product fell down or was damaged, contact us for maintenance.

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
Product adjustment is not required before installation.
Install the product by following the cautions and instructions described below.

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. Thoroughly flush flow passages to remove foreign objects before productinstallation. If the fluid contains foreign objects, install a strainer at the flow
passages. Foreign objects cause early leakage.
2.
Avoid pipe laying where excessive moment load is applied to the product.
Failure to do so can cause early leakage.
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.

10

6. Removal
Perform removal by following the warnings and cautions described below.

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.

7. Operation
7‐1) Operation
Perform operation by following the warnings and cautions 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.

CAUTION7‐2) Operation shutdown

Follow the following instructions during operation shutdown.

Instruction

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.

11

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

Instruction

1. Visually check 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
The bearing section and main seal require periodic greasing (refilling).
Carry out greasing according to the following instructions.

Instruction

1. Remove the grease outlet plug and fill the grease through the grease nipple(grease inlet). Continue to fill until new grease comes out from the grease
outlet.
2. If the grease is filled without removing the plug, parts inside the product may
be damaged by the grease pressure, causing fluid leakage.
3.
Use the same grease as the one filled in the product before shipment.
Do not use grease mixed with other ones. Doing so may reduce thelubricating effect.
4. Carry out greasing with reference to the frequency and amount (guideline)
shown in the following table. Failure to carry out greasing can reduce thelubricating performance of the grease, causing the reduction in the ball bearing
lifetime.

< Grease filled in the product before shipment >1. Alvania S1 (Shell Lubricants Japan K.K.) is filled in standard specification products.
2. Grease different from the standard specification is filled if a model name includes an option(grease) code. Check the grease brand before greasing.
Greasing Frequency (Guideline)
Fuid Temperature（℃）
0～60
60～100A Series
Grease Amount (Guideline) (cm3)
Size
10A
15A
20A
25A
32A
40A
50A
65A
80A
100A

First Time
1.5
1.5
2
2
4
4
8
23
23
29

Refill0.8～0.9
0.8～0.9
1.0～1.6
1.0～1.6
2.0～2.4
2.0～2.4
4.0～4.8
12～14
12～14
15～17

Greasing
Frequency
YearlyEvery six months

AS Series
Grease Amount (Guideline) (cm3)
Size
10A
15A
20A
25A
32A
40A
50A
65A
80A

First Time
1.5
1.5
2
2
4
4
10
13
14

Refill0.8～0.9
0.8～0.9
1.0～1.6
1.0～1.6
2.0～2.4
2.0～2.4
5.0～6.0
6.5～7.8
7.0～8.4

12

B Series
Grease Amount (Guideline) (cm3)
Size
10A
15A
20A
25A
32A
40A

First Time
2
2
4
4
4
5

Refill
1.0～1.2
1.0～1.2
2.0～2.4
2.0～2.4
2.0～2.4
2.5～3.0

C Series
Grease Amount (Guideline) (cm3)
Size
40A
50A
65A
80A
100A
125A
150A
200A
250A
300A

First Time
Refill5
2.5～3.010
5.0～6.013
6.5～7.8
14
7.0～8.4
20
10～12
23
12～14
67
34～40
147
74～88
165
83～99
260
130～156

CS Series
Grease Amount (Guideline) (cm3)
Size
40A
50A
65A
80A
100A
125A
150A
200A

First Time
5
10
13
14
20
23
67
147

Refill
2.5～3.0
5.0～6.0
6.5～7.8
7.0～8.4
10～12
12～14
34～40
74～88

8‐3) Repair and replacement of consumables
The bearing section and main seal become worn over the course of operation time. Moreover, themain seal deteriorates and 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.

13

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

Fluid is leaking.

CausesCountermeasures

The main seal is damaged.
The main seal lifetime has been reached.

Contact us for repair.
Alternatively, replace with a new one.

The fluid contains foreign objects.

Clean the inside of the product and pipes.
Install a strainer.

Excessive moment acts on pipes, etc.

Review the pipe laying method.

An improper main seal material was selected.

Consult with us.

A product that includes a PTFE seal as a main seal isused under negative pressure, or a high moment acts on Consult with us.
the product. (＊1)
The ball race is deformed, and the shaft and body comein contact with each other.
The shaft does not rotate.
The seal causes wringing.
(Starting torque is high.)
Sticking of fluid (that has ability to solidify).
Lifetime is shortened.
Oil is leaking
from a ball plug.

Replace with a new one.
Rotate the shaft a few turns to checkthat it rotates smoothly before use.
After using the product, clean its inside toremove foreign objects.

The product is used in consecutive rotation condition or Consult with us. (The selected productat high-rotation speed.
may be inappropriate.)
Oil released from grease seeps from the gap between
the ball plug and body.

No fault is indicated. (＊2)(＊1) A PTFE seal is a spring-loaded seal consisting of a Teflon cover and a metal spring. Teflon is easily
deformed in a plastic manner. Therefore, using a Teflon seal in a vacuum condition or applying a highmoment load to it may deform the seal, possibly resulting in fluid leakage.
(＊2) The ball plug tightened into the body has a parallel thread. As it does not have sealing ability, oilreleased from grease in the bearing section may seep from the gap between the ball plug and body.

14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.

15

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

16

A. Appendix - How to Repair or Replace Consumables

17

As each series has the same structure, the same workflow is applied.
＊ Some products have two set screws ⑥.
＊ A set screw is used as a plug ⑧ for products up to 100A, and a hex. socket head tapered pipe
plug is used for products that are 125A or larger.
＊ A back-up ring is used for main seal ③ of the B series only.
２

３

７

５

４

１

Ｂａｃｋ－ｕｐ Ｒｉｎｇ
Ｍａｉｎ Ｓｅａｌ

Ｏｎｌｙ ｆｏｒ Ｂ Ｓｅｒｉｅｓ
Ｍａｉｎ Ｓｅａｌ

Ｇｒｅａｓｅ Ｏｕｔｌｅｔ

８

６

９

ＰＴＦＥ Ｓｅａｌ①Shaft ②Body ③Main Seal ④Dust Seal ⑤Steel Ball
⑥Set Screw ⑦Grease Nipple ⑧Plug ⑨Ball Plug

< Disassembly >Carefully disassemble the product so that each part is not damaged.
1) Remove grease nipple ⑦ and plug ⑧.
2) Remove set screw ⑥.
3) Remove ball plugs ⑨.
＊When assembling, it is necessary to reinstall both ball plugs in their original positions.
Place a marking so that users cannot make errors.
4) Face the ball plug side downward, and then remove all steel balls ⑤ while alternately turning
shaft ① in clockwise/counterclockwise.
5) Pull out shaft ① from body ②.
6) Remove main seal ③ and dust seal ④.

< Inspection >Clean each part and check for damage. In particular, check wear and damage conditions of the ballrace section between shaft ① and body ②, and the sliding surfaces against main seal ③ and dust
seal ④. Depending on the degree of damage, some parts may not be reused.

SHOWA GIKEN INDUSTRIAL CO., LTD

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

7-24, Nishi-Kobari, Ina-Machi, Saitama, 362-0811 Japan 18
Phone : +81-48-728-9460
Fax. : +81-48-728-9461

< Parts replacement >1) Replace main seal ③, back-up ring (B series only), and dust seal ④ with new ones
regardless of their conditions.
2) If reuse of parts is impossible, replace them with our new genuine parts.
Contact our sales representative to request genuine parts.

< Assembly >Carefully assemble the product so that each part is not damaged.
1) Apply grease to the surfaces of shaft ① and body ② with which main seal ③ and dust seal ④
come in contact.
2) Install main seal ③ to body ②.
＊For the B series, also install the back-up ring.
＊Be careful of the installation direction of the PTFE seal if it is used.
3) Install dust seal ④ to shaft ①.
4) Insert shaft ① into body ②.
5) Push shaft ① against body ②, and then put in steel balls ⑤ while alternately turning shaft ① inclockwise/counterclockwise.
6) Attach ball plugs ⑨ to their original positions.
7) Install set screw ⑥.
8) Turn shaft ① a few turns clockwise/counterclockwise to make sure there is no fault.
9) Install grease nipple ⑦ and fill the grease through it. Continue to fill until new grease comes out
from the grease outlet.
10) After greasing, attach plug ⑧.

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)19