URESTORO [Overview]
Weather-Resistant Urethane Spring
Pressure Source Components■ Application Examples [Type X&A]
The URESTORO urethane elastomer spring for press
tools is a weather resistant material suitable for mostconditions. Ideal for repetitious compression applications,with resistance to high temperature and humidityconditions. Moreover, the product withstands not only
high impact loads, but also resistant to certain chemicals.
Excellent for pad pressure resistance of press tools.

For operation with single stage spring
hd8
hd4

Guide Pin

Shoulder Bolt
hd10

hd3

hd1

■ Features・The durability in extreme environments with high stress levels or humidity has beensignificantly increased compared to that of the existing USX, USA and USZL specifications.
・The URESTORO series can be easily substituted for existing products.
・The product dimensions have not altered and remain the same as that of the existing USX
specifications.
・However, please note that the load deflection curve for that of non-URESTORO products canbe different.
Performance Values

Material

Urethane Elastomer

Hardness

Shore Ａ 88°
± 3°

Color

Green

Tensile Strength28.3 MPa

Retainerhd2

RFor operation with double stage spring
DETAIL R

Washer100％

6.9 MPa300％

11.7 MPa

Elongation

450%

Tear Strength

11.4 N/mm

Impact Resistance

50%

hd6

hd7
hd5

hd9

■Range of Application
USWA

Deflection Rate
Limit for Operation
25%

SPM
Limit for Operation
50SPM

USWX

30%

40SPM

Ambient Temperature
Limit for Operation

Dimension Table (mm) [Type X]
Urethane Spring

50℃

Guide Pin

WasherOthers

H d1

Hd 2

Hd 3

Hd4

Hd 5

Hd 6

Hd7

Hd 8

Hd 9

Hd10

Specification limit SPM varies depending on the deflection ratio. Please contact our sales representatives for details.

USWX50501458

12M106513147870■ Oil and Chemical Resistance

USWX60602070

18M168013209080

Lubrication oilTurbine oilGasoline
AcetoneAmmonia

112×
2Ethyl alcohol
GreaseMineral oil
Acetic acidBrine

3
11×1Water
Methyl alcohol
Hydrochloric acid (20％)
Sulfuric acid (10％ )Benzene

2×3××

1 excellent resistance
2 good resistance3 mediocre resistance× not resistant

For the use with press tools, 1 or 2 can be considered.

■Storage・In order to protect against ultraviolet rays, store away from direct sunlight.
・Deterioration is faster under conditions of high temperature or humidity.
We recommend putting a desiccant in the container and storing in as cool a location as possible.

1171

Pressure Source
Components

Material Characteristics

Modulus

Stepped Bushing

URESTORO is a registered trademark or unregistered trademark of Sankyo Oilless Industry, INC.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

USWX80802092

18M16100

2120112100

USWX100

10020114

18M16125

2120134120

For USWA, use guide pin h12 for urethane diameter h60 or smaller and h18 for urethane diameter h70 or larger.

■ Conditions for Use
・Use at or below the stated deflection ratio.
・The urethane spring seating surface requires an external diameter of > 20 mm.
・The clearance around each spring must be sufficient to prevent any contact with theneighboring components.
・Exposure to ultraviolet and sunlight must be avoided.
・Guide pins should be S25C equivalent or better and finished within Ra1.6.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

1172

URESTORO

Weather-Resistant Urethane Spring Counterbore Hole Type
Pressure Source Components
USWZLK (with Retainer)

Catalog No.

DUSWZLK

405060708090100

L1 mm incrementsdd1d2D1T

H

35〜150＊11520

1119.5

512V4859

50〜150＊1

Applicable
Bolt
M1072
82

50〜200＊1

1822.5132262096

M12107120hD
hd1i0.50hV

Catalog No.

DL

USWZLK

7085＊1 ・When using D=40, 50 L<40 mm, D=60 to 100 L<55 mm, be careful of interference between retainer
mounting bolts and urethane spring receiving seat surface.
Please take measures such as relief processing on the urethane spring receiving seat surface.
・Note that products with short L dimensions may not ensure a maximum deflection ratio of 25%.

Clearance

Upper die0H -0.5

TL25%Deﬂection

K (Retainer)
Lower die

hD+20

hd

hV+20

Pressure SourceComponents

C1

Urethane

hd2〈Material〉Urethane Elastomer

1185

Refer to page 1192 for attached retainer size.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

1186

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

URESTOROUSWZLK Load-Deflection Diagrams
Pressure Source Components
InitialUSWZLK40-60

USWZLK40-806USWZLK60-50

300,000 Strokes

USWZLK60-80

155100,000 Strokes

141241010322Load (kN)

Load (kN)
52003691215024Deflection (mm)10121416180202.599887766543211012.52468101214161820

Deflection (mm)USWZLK70-170
201515421020537.5

USWZLK70-110

Load (kN)

105

Deflection (mm)USWZLK50-100

10Load (kN)

Load (kN)

8Deflection (mm)USWZLK50-60

006Load (kN)0641081010550510Deflection (mm)15051015

Deflection (mm)2025051015Deflection (mm)202508.5

1725.53442.5Pressure SourceComponents

Load (kN)

Load (kN)

4Deflection (mm)

1187

1188

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

URESTOROUSWZLK Load-Deflection Diagrams
Pressure Source Components
InitialUSWZLK80-80

USWZLK80-100

USWZLK100-80

30305045404035151030

Load (kN)

Load (kN)

Load (kN)

Load (kN)2010300,000 StrokesUSWZLK100-120

502520100,000 Strokes

203025201551000010504812160205

Deflection (mm)20254812

Deflection (mm)16200051015403030201052530

2010020

Deflection (mm)USWZLK90-200

40

Load (kN)

Load (kN)

15

Deflection (mm)USWZLK90-140010Pressure Source
Components

0101520

Deflection (mm)253035001020304050

Deflection (mm)11891190

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

hD
hd1＋0.50Retainer, Spacer
Pressure Source Components
SORTA

KK (Retainer)

hd ＋ 0.1
0L2＋ 1.0hd2

L

Catalog No.

H＋ 0.5H− 00.5hD

hd
115°
L1ThD1TR2L45°

hd − 00.3〈Material〉SS400 or S25C

NominalL

141020SORTA

D

1630

2022223524d913

Catalog No.

Nominal

LSORTA

2030

L1L2233

7510

Applicable Rubber Spring, Urethane Spring
Outer Diameter

Length30, 40〜4030n63

hd2〈Material〉SS400

Catalog No.

Nominal

D1K

101219.5

15221850n63

dd2

HT

111251320660n12560n60n120

Catalog No.

Nominal70n10060n200K

10SOIS
1C2-

310hd
10hD

Pressure Source
Components

hD2hdhD

hD150.

C
2-SORTB〈Material〉Neodel(#25-61N)

730〈Material〉SS400 or S25C

Catalog No.

Nominal

D

D1

D2d

Outer Diameter

SORTB

1422191314

95063

27

20221380

100

When installing SORTB, set the straight part to the fixed surface side.

Catalog No.

Nominal

D65SOIS

50638010080
100125d1321

Applicable Rubber Spring, Urethane Spring
Outer Diameter
3040606370809010050

Inner Diameter

Guide Pin Diameter

1412201102220

Guide pins should be S25C equivalent or better and finished within Ra1.6.

Catalog No.

NominalCatalog No.

NominalSORTB

14SOIS

631191

1192

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.