JHS Series
Hyper Coupling

CAT.NO.B1010E

No.1 & Only One
Technological Capacity
A drive shaft that transmits power to a machine is installed between the machine and the motor.
Therefore, if the machine stops suddenly and an overload is generated, the drive shaft or themotor may break down.
The hyper coupling developed by JTEKT is an interrupting device which prevents overloads frombeing transmitted to the motor or the drive shaft if an overload is generated.

High-level design/processing technology is added to a newly-developed material aiming at ultimate performance.
New-generation products with improved rolling fatigue life, superior toughness and corrosion resistance, as well as unparalleledload capacity, abrasion resistance, and high-speed performance – This is what the JHS (JTEKT Hyper Strong) Series is about.
JHS accelerates innovation, improvement, and rationalization at all manufacturing sites.
※JHS is a registered trademark of JTEKT Corporation

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imitterr
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that pprotects
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riivee ssystemsystem
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JHS Series
Hyper CouplingExtensivelineup

High operation
accuracy
Significant
reduction ofmaintenance
man-hoursHigh durability
performance

Operating principle
A hydraulic expansion chamber is set in theouter cylindrical part to expand with oilpressure and transmit torque to the shaft part.

Torquetransmission

4
Recovery132
Oil pressure
releaseFree independent
rotation
The shear valve is replaced bymatching the phases of theouter cylindrical part and shaft
part. When oil pressure from thefemale coupler is applied again,
recovery is completed.

When excessive torque occurs,
the torque transmission surface
slides relatively. At the same time,
the shear valve is broken by thecover tube and the oil pressure isreleased instantly.
The outer cylindrical part and the shaft part are free torotate independently and smoothly on the bearings that
support both ends of the torque transmission surface.

High operation accuracy

Support bearing

3500■ Operating torque accuracy within ±10%

Outer cylindrical partis realized

3000

Shaft part

Measurement value＋10％

Operating torque (kN・m)

The relationship between the operating torque and oilpressure value was obtained with analysis and verified
with a large static torsion testing machine to improvereliability.

Shear valve

Hydraulic expansion chamber

Theoretical line

2500

−10％

2000

1500

100050001520253035404550

Oil pressure (MPa)

Relationship between oil pressure and operating torqueHigh durability performance

Support bearing

Cover tube

■ Operating durability of 150 times or moreis realized

Female coupler

・Special surface treatment is applied to the operating
surface to improve durability.
・The oil pressure release performance is improved byestablishing an analysis method of the oil pressure
release time.
・A high degree of free independent rotation performanceafter the release of the oil pressure is secured byutilizing our know-how as a bearing manufacturer.

Torque transmission surface and sliding surface

When excessive torque occurs

Reduction of maintenance man-hours■ Recovery operation man-hours reduced to

1/4 (compared with the shear pin type)

Only the shear valve is required to be replaced during operation, thus
improving maintenance man-hours and the cost of replacement parts.

Excellent operating surface state after evaluation■ Unlike the current shear pin type, this product does notrequire regular part replacement unless it is used.

The maintenance man-hours are greatly reduced, contributing toimprovement of availability.

At the timeof recovery

Support bearings

Shear pin type

Hyper coupling

Replacement
part◆Shear pin: 4 pieces◆Nut: 4 pieces◆Bush: 8 pieces◆Shear valve: 4 pieces

Ratio of required
man-hours forpart replacement1

1/4

Regular inspection/replacementof the shear pins is required

Regular inspection/replacementof the shear valves is not required

At the regular inspection time

Example of use of hyper coupling (rolling mill)Occurrence of multiple in-take of rolled material

The rolls stop suddenly

Hyper coupling not installed

Hyper coupling installed

Excessive torque acts on the motor, pinion
stand, and drive shaft

Excessive torque transmission is intercepted

Equipment is damaged

Equipment is protected

Significant downtime
needed for equipment
repair/replacement

Recovery within ashort time
Drive shafts

Work rolls

Hyper coupling
Pinion standMotorInstallation on this side can be also considered

Examples of other applications● Crusher● Sizing press mill

● Plastic molding machine● Electric resistance welded tube millExtensive lineup(1) Supported torque : 80 to 4200kN･m(2) Supported size : Outside diameterφ280 to 1090 mm
Full length 350 to 1500 mm※We propose installation in your current facility

by providing individual design.

Drive shaft rotation diameter of supported size : φ160 to 840 mm

We also accept orders in combination
with a drive shaft.

www.jtekt.co.jp
OFFICES
KOYO CANADA INC.
5324 South Service Road, Burlington, Ontario L7L 5H5, CANADATEL : 1-905-681-1121
FAX : 1-905-681-1392

JTEKT NORTH AMERICA CORPORATION-Main Office47771 Halyard Drive, Plymouth, MI 48170, U.S.A.
TEL : 1-734-454-1500
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KOYO MEXICANA, S.A. DE C.V.
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TEL : 52-55-5207-3860
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FAX : 507-264-2782/507-269-7578

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TEL : 97-1-4299-3600
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C/o Stylus Commercial Services PVT LTD, Ground Floor, TheBeech, E-1, Manyata Embassy Business Park, Outer Ring Road,Bengaluru-560045, INDIATEL : 91-80-4276-4567 (Reception Desk of Service Office)
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172/1 Moo 12 Tambol Bangwua, Amphur Bangpakong,
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FAX : 66-38-532-776

PT. JTEKT INDONESIA
Jl. Surya Madya Plot I-27b, Kawasan Industri Surya Cipta,
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TEL : 62-267-8610-270
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27, Penjuru Lane, Level 5, Phase 1 Warehouse #05-01.
SINGAPORE 609195
TEL : 65-6274-2200
FAX : 65-6862-1623

PHILIPPINE KOYO BEARING CORPORATION
6th Floor, One World Square Building, #10 Upper McKinley
Road, McKinley Town Center Fort Bonifacio, 1634 Taguig City,PHILIPPINESTEL : 63-2-856-5046/5047
FAX : 63-2-856-5045

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Seong-do Bldg 13F, 207, Dosan-Dearo, Gangnam-Gu, Seoul,
KOREA
TEL : 82-2-549-7922
FAX : 82-2-549-7923

JTEKT (CHINA) CO., LTD.
Room.25A2, V-CAPITAL Building, 333 Xianxia Road, ChangningDistrict, Shanghai 200336, CHINATEL : 86-21-5178-1000
FAX : 86-21-5178-1008

KOYO AUSTRALIA PTY. LTD.
Unit 2, 8 Hill Road, Homebush Bay, NSW 2127, AUSTRALIATEL : 61-2-8719-5300
FAX : 61-2-8719-5333

JTEKT EUROPE BEARINGS B.V.
Markerkant 13-01, 1314 AL Almere, THE NETHERLANDSTEL : 31-36-5383333
FAX : 31-36-5347212-Benelux Branch OfficeEnergieweg 10a, 2964 LE, Groot-Ammers, THE NETHERLANDSTEL : 31-184606800
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KOYO KULLAGER SCANDINAVIA A.B.
Johanneslundsvägen 4, 194 61 Upplands Väsby, SWEDENTEL : 46-8-594-212-10
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KOYO (U.K.) LIMITEDWhitehall Avenue, Kingston, Milton Keynes MK10 0AX,
UNITED KINGDOMTEL : 44-1908-289300
FAX : 44-1908-289333

KOYO DEUTSCHLAND GMBH
Bargkoppelweg 4, D-22145 Hamburg, GERMANY
TEL : 49-40-67-9090-0
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KOYO FRANCE S.A.
6 avenue du Marais, BP20189, 95105 Argenteuil, FRANCETEL : 33-1-3998-4202
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KOYO IBERICA, S.L.
Avda.de la Industria, 52-2 izda 28820 Coslada Madrid, SPAINTEL : 34-91-329-0818
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KOYO ITALIA S.R.L.
Via Stephenson 43/a 20157 Milano, ITALYTEL : 39-02-2951-0844
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PUBLISHERJTEKT CORPORATION NAGOYA HEAD OFFICE
No.7-1, Meieki 4-chome, Nakamura-ku, Nagoya, Aichi 450-8515, JAPANTEL : 81-52-527-1900 FAX : 81-52-527-1911

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Sales & Marketing Headquarters
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CAT.NO.B1010E
Printed in Japan 15.05-1CM