High-performance Product Series

for Steel Production/Rolling Equipment

CAT.NO. BA010EN-0CH

JTEKT…
Utilizing comprehensive strengths to manufacture productsthat respond to steel production equipment needs
and support stable operations.
JHS (JTEKT Hyper Strong) is a product series incorporating designs tomeet the requirements of various industrial machinery.
In order to achieve high-durability of ever-evolving steel production equipment,
JHS is evolving daily together with JTEKT customers and provides total support for bearings,
drive shafts and oil seals.

JHS Series

Bearings● RZ-type Spherical Roller Bearings (CAT.NO.B2023E)● Bearings for multi-roll mill backup rolls(CAT.NO.B2012E)

Case-hardened steel is used on the inner ring to improve rolling life in
low-viscosity lubrication.
● Bearings for roll necks(CAT.NO.B2013E)
Standard

By using our newly developed case-hardening steel in the bearing rings,
we have improved the rolling life, toughness, and corrosion resistance.

Premium

A special heat treatment is applied to the newly developed hardened steel tofurther improve rolling life and corrosion resistance.
● Bearings for sintering machine pallet car

Drive shafts
Steel production equipment are operated in extremely harsh environments, where machinery is exposed
to high temperatures, water and mill scale. The bearings used in this equipment must continually
withstand heavy loads and high-speed rotation. These conditions test not only each bearing, but also
the overall strengths of peripheral parts and the integration thereof. As a general manufacturer ofbearings, drive shafts and oil seals, JTEKT is a full- service provider for a wide range of products.

Only One Partner
01

Photo courtesy of Nippon Steel & Sumitomo Metal Corporation● Drive shaft for roll drives (CAT.NO.B2021E)● Hyper coupling(CAT.NO.B1010E)

We will continue our efforts to enrich
the JHS series.
02

History of JTEKT products for steel production equipment

1940

Sprocketwheel

ME typeMD type

Rail
Feed side

GK typeOil seals
Discharge side

Japan 1st

Introduction of overseas Drive shafts technologies;
domestic production

・Entered agreement with Sendzimir Japan, Ltd.
to manufacture backup roll assemblies
・Started production of
Sendzimir mill backup roll assemblies

Unique toJapan・Adopted roller bearings for
1,680m/min cold-strip mill backup rolls

Japan 1stPressure roller bearings(sealed type double row cylindricalroller bearings)

・First delivery of drive shafts for cold-strip mills

Japan 1st・First delivery of drive shafts for hot-strip mills

Japan 1st

Intermediate seal
Wheel bearings(sealed type double row tapered
roller bearings)

Cylindrical roller bearing
with aligning ring (free side)

Oil/air lubrication system
CAT.NO.B1019E

HSC bearing units withhalf round outer ring・Received award from the Japan Society of Mechanical Engineers
for hot-strip mill drive shaft

・Developed (sealed) roll neck bearings for 6HI work roll shift mills
・Improved bearings for backup rolls fromoil-film bearings to roller bearings

Japan 1st

Sintering machine

・Developed CR mill backup roll assemblies
・First delivery of drive shafts for hot-strip WR shift mills

Electric furnace

Iron ore・Developed split bearing units (spherical Roller bearings)

Japan 1st

Continuous casting machines

Limestone

・Developed fastening-ring split bearing units with fastening-ringLonger-life bearings/drive shafts and extended maintenance interval

Development of bearings/drive shafts compatible with shape-controlled rolling mills

03

Period of economic change

2015

Development of high-performance bearings(longer service life, high-speed compatibility)

2010

Pallet car

Japan 1st・Developed sealed cylindrical roller bearings for Sendzimir mills

Pursue higher functionality/better quality

Economic expansion

2005

Domestic production of
bearings for rolling mills

2000

Burst of bubble /Economic stagnation

1995

Bubble economy

1990

・Developed tapered roller bearings
for hot-strip mill backup rolls

Bearings for sintering machine pallet car

Japan 1st・First delivery of drive shafts for wire-rod mills

Large-variety, low-volume production;
improve thickness accuracy; reduce maintenance cost

1985

・Developed four-row tapered roller bearings
for hot-strip mill work rolls

CAT.NO.B2011E
Spherical roller bearings(fixed side)

・Developed three-row cylindrical roller bearings with cagefor Sendzimir mills

Mass production; increase productivity;
high-load/ high-speed/continuous

1980

Products for continuous casting machines〔 ■ Bearings ■ Drive shafts 〕

Stable growth period

1975

High growth period

1970

Post-WWII1960

Catch-up withindustry overseas

WWII
1950

Steel manufacturer
trendsSocial conditions/events

Year

Introduction to products
for steel production equipment

・Developed cylindrical roller bearings with self-aligning ring

Converter・Developed oil/air lubrication system

・Developed long-life Cross & Bearing with different diameter rollers
・First delivery of drive shafts for pair cross mills

・Developed carburized steel (CH213) for large bearings

Coke oven

Coal・Developed HSC split bearing units
・First delivery of drive shafts for Plate mills

World 1st

Blast furnace

・Developed new material for core hardening
・Developed sealed cylindrical roller bearings
for new Sendzimir mill producing magnetic steel sheets
・Developed long-life Cross & Bearing with cross burnishing process

Torpedo car

・Fiest delivery of hyper coupling・Adopted newly developed material andcarbonitriding process (premium)for JHS520 highly corrosion-resistant long-life bearings

Axle bearings

Bearings for converter

Bearings for swing tower support

・Developed JHS210 high-performance backup roll bearings
for new Sendzimir mill producing magnetic steel sheets
・Developed a long-life, high-speed JHS Series spherical roller bearings
・Commenced full-scale operation of theLarge Bearing Technical Development Center・Developed an oil seal for sealed-type,four-row tapered roller bearings, for roll neck・Developed an oil seal for drive shaft cross bearings

Sealed type double row tapered roller bearings

Ironmaking

Large seal (MS)Slewing rim bearings
CAT.NO.B2025E

Large spherical roller bearings

Steelmaking04

Steel production equipment

Products for rolling mills

CAT.NO.B2013E

Bearings for multi-roll mills

Round type drive shaft

Chock seals

CAT.NO.B2012E

Block type drive shaft

Four-row cylindrical roller bearings

Three-row cylindricalroller bearings

Hyper coupling

Double-row tapered roller bearing

Sealed type four -row tapered Four-row tapered roller bearing
roller bearing(45D)

Sealed type double-row cylindricalroller bearings

Backup roll assembly

Steel strip in coilC

Skin-pass millCold strip mills

Tension leveler

Hot finishing rolling millStainless steel in coil
Magnetic steel in coilSlabMulti-roll mills

Plate

Shaped-steel rolling millPlate leveler

Plate mills

Shaped steel

Bloom

Rod / Wire Rod mills

Rod

BilletWire rod
Bearings for H rolls

Four-row cylindricalroller bearings

Thrust spherical roller bearings

Bearings for V rolls

Double-row tapered roller bearings

Unit bearings for Plate levelers

Bearings for rod / wire rod mills

Four-row cylindricalroller bearings

Unit bearings for tension levelers

Matched pair angular contact
ball bearings

Rolling
05

06

Steel production equipment

Products for continuous casting machines
Offering long-life bearings for systems, we manufacture bearings forcontinuous casting equipment, bearing housing units,
oil/air lubrication devices, oil seals and other products.

Measures for heavy load / high temperature

2 Cylindrical roller bearings with self-aligning ring
Required performance and issues

Features ・Smooth absorption of roll movement in the axial direction

・Absorption of roll deflection and misalignment

Measures for high contact stress/roll deflection under heavy load

【Static load rating】

Measures for roll elongation under high temperature

Spherical roller bearings
Split roll

Measures for corrosion / lubrication failure due to the infiltration of steam (water)

10％ increase (approx)

Mallet form roll

Cylindrical roller bearings with
self-aligning ringMax.

Measures for surface roughness / indentations due to the intrusion of mill scale

3 HSC bearing units with half round outer ring
Roll configuration example 2 (pestle-shaped roll)Roll configuration example 1 (single and split rolls)
Optimal configuration for roll elongation absorption using single and split rolls

Features ・Heavy load type using a compact sealing structure

Optimal configuration for roll elongation absorption using pestle-shaped roll

【Cooling structure】【Compact sealing structure】

・Water-cooled structure with high cooling efficiency

Labyrinth ring【Service life】

Roller
Packing

Conventional unit

Inner ringSeal

2.4-fold

HSC bearing units withhalf round outer ring

Approx.
【Rated static load】

Conventional unit

【 bearing for free side 】 【 bearing for fixed side 】

2【 bearing for free side 】【 bearing for free side 】

1

2

2

3

【 bearing for fixed side 】

1

30％ increase (approx)

HSC bearing units withhalf round outer ringMax.

Water inlet【Flow consumption】
Conventional unit

Measures for heavy load / high temperature

Reduced45％ (approx)

HSC bearing units withhalf round outer ring

Water outlet

1 RZ-type Spherical Roller Bearings
Features ・Designed for maximum load rating; internal design reduces contact stress・Designed to stabilize roll position
・Resistant to high temperaturefor use in various environments

Measures for intrusion of water / mill scale
Outer ring【Service life】
Conventional bearing

1.3-fold

Approx.

JHS series

Roller・Roller maximized
・Number of rollers increased
・Roller position stabilized

Inner ring・JTEKT specification steel07

Oil seals

・JTEKT specification steel

Features ・Superior sealing performance

Bearing composition
diagram・Lip contact stress dispersed
・Materials used arehydrogenated nitrile rubber (HNBR)
and fluoro rubber (FKM)

End side
ME typeRoll side
MD typeRoll side
GK type08

Steel production equipment

Bearings for roll necks
Heavy load

Bearings used to steel mill roll necks must cope with heavy loads andhigh-speed rotation in severe environments. In order to respond to theseneeds, JTEKT works daily to resolve related issues such as developing
bearing materials and improving bearing seal performance.

High-speed rotation

Intrusion of water for rolling mill or scale

Heat generated by sliding friction between
the face of cone back face rib and roller large end face
Rolling fatigue of material

Burnout

Decrease of oil film strength of lubricating oil
Wear of raceway

Required performance and issues
Subsurface-initiated flaking

Enhancing durability and service life under heavy load / high-speed rotation
Preventing the intrusion of water / mill scale

Minimizing temperature increases

Surface-initiated flaking

Technology for minimizing
temperature increases

High-performance seal

◆ Standard

By using our newly developed case-hardening steel in the bearing
rings, we have greatly improved the rolling life, toughness, andcorrosion resistance compared to our conventional products.

Features ・On the basis of the EHL theory, improvement of the

lubrication of the rolling part between the roller
large end face and the face of cone back face rib◆ Premium

By using our newly developed case-hardening steel and by applying
special heat treatment, we have provided the premium specification
with further improved rolling fatigue life and corrosion resistance.

1 Long-life and high corrosion-resistant steel with
optimized content of chromium and molybdenum
2 Original carbonitriding heat treatment improves corrosion-resistance and wear-resistance qualities
Results of evaluations of bearings in an environment prone to rust (filled with water-mixed grease)・Optimization of the shapes and suppression oftemperature rising for the rolling part between theroller large end face and the face of cone back face rib

Load resistance comparison

High-speed resistance comparison
Cup outer surface temperature rise (°C)
(Cup outer surface temperature - ambient temperature)

Long-life / high corrosion-resistantcarburized steel

Rust resistance comparison

Long-life/high corrosion-resistant steel

Rust

Improvement of durability and service life to withstand heavy loads and high-speed rotations

Improvement of durability and service life to withstand heavy loads and high-speed rotations

Features(Countermeasure technologies)

Axial load (Fa): 45 kN

100
90

90

80

80

70

70

60

60

50

50

40

40

30

30

20

20

10

10

0
500

Rotational speed: 1840 min-1

100

1000
1500
Rotational speed min-1

2000

0

0

2 times the speed performance

Results of evaluations of bearings in clean oil(at the same temperature rise)

Rust resistance comparison Life (JTEKT bench test)

50

100
Axial load (kN)150

4 times the load performance(at the same temperature rise)

Conventional product

Preventing intrusion of water / mill scale

Developed steel,
carburized product1
Developed steel,special heat treated product1

2

Approx.

4-fold

3.8-fold

Approx.

7-foldApprox.

(JHS520 premium)

Test conditions

2.2-fold

Approx.

(JHS520 standard)

Humidity cabinet test conditions
Test temperature: 49°C ± 1°C
Relative humidity: 95% or more
Test period: 96 hours

Sample: Tapered roller bearing
Main dimensions: ø50 × ø120 ×30
Lubrication: Grease (water content ratio, 30%)

Test piece form: 20 mm dia.,
32 mm length
Maximum contact stress: 5 800 MPa
Loading cycle frequency: 285 Hz
Lubricating oil: Turbine oil (ISO #VG68)
Oil supply: 2 L/min (room temperature)* Test was stopped after 50 × 107 times.

High sealing property oil seal for sealed-type,four-row tapered roller bearings
Features

1 Greater robustness due to improved sealing property

・Optimization of seal lip shape・Maximized pump volume and reduced the amount of water infiltration into the interior

Seal between inner ring

Shaft end oil sealof the bearing by 70% or more compared to conventional

2 Expanded application range of the conventional material (NBR: nitrile rubber)・Reduced seal lip temperature by 30% compared to conventional
・Expanded the application range of common and low-cost NBR to improve convenience

3 Reduced maintenance costs

・Contributed to reduction of customers’ maintenance costs through extended service life of seals

Examples of actual use

Cold strip mill work roll (open type)1

JHS520standard

Conventional type1

2

JHS520premium

Conventional type

Used approximately 4 million tons (under DS)

Approx.

Cold strip mill work roll (sealed type)

Approx.

Chock seals
Outer scale seal

Features ・Original design realizes an optimal lip

Used for approximately 24 mont (under OP)

5-foldPump volume

structure that demonstrates excellent
sealing performance

4.8-foldIntermediate scale seal
Oil seal

No flaking

Hardly any indication of rust

For more information, please refer to catalog No. B2013E and No.B2002E.
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Steel production equipment

Bearings for multi-roll mill backup rolls
We provide high-precision bearings with excellent durability based onlong years of experience and achievements.

Longer inner ring rolling fatigue service life

Improving outer ring durability

Improving outer ring rotational accuracy

Bearings for forced oil lubrication
Required performance and issues

Features ・Outer ring with both high rigidity and durability realized

Seal structure that maintains a favorable lubricated state
Improving outer ring durability

Longer inner ring rolling fatigue service life

Improving outer ring rotational accuracy

Improving ease of outer ring regrinding work

・High resistance to fatigue realized owing tosuperior materials composition
・Design optimized to match surrounding structure

Premium specifications
Seal structure that maintains a favorable lubricated state

Longer inner ring rolling fatigue service life

Improving outer ring durability

Improving outer ring rotational accuracy

Case-hardened steel is used for the inner ring tosuppress the loss of rolling service life under
low-viscosity lubrication.
Bearing service life is approx. 1.5~3-fold that ofconventional products.

Bearings for oil mist lubrication
Features ・Improved bearing service life (2-fold/4-fold compared to the conventional type)

Improving ease of outer ring regrinding work

・High sealing performance・Space-saving size for simple installation / removal【Service life】
Conventional type2-fold(JHS210 Standard)

Approx.

Use of retaining ring simplifies oil-seal insertion / removal

Bearings-regrinding Jigs

Measurement for Bearing Section Height

Features ・Bearing radial runout minimized

Features ・High rigidity,

・Installation / removal work simplified
・Reproduction of radial runout accuracy equivalent
to that when product is new

Seal plate

4-foldImproving ease of outer ring regrinding work

possible to make extremely accurate measurements
・Possible to measure outer ring rotational accuracy
・Adoption of mandrel shape realizes
easy bearing insertion / removal

Approx.

(JHS210 Premium)Premium specifications

Prevents intrusion ofrolling-mill water

Case-hardened steel is used for the inner ring tosuppress the loss of rolling service life under
low-viscosity lubrication. For oil-seal materials,
fluoro rubber is used, improving sealing
performance and realizing an increase in bearing
service life of approximately four-fold compared tothe conventional type.

Oil seal rotates together with outer ring

Centrifugal force of the seal lip section
discharges rolling water that has
infiltrated to the outside

Core hardening

Optimized load distribution
Contributes to rolled coil quality / precision< 0.006 mm
Variation of bearing section heights on one shaft =< 0.002mm
Variation between two adjacent bearings on one shaft =Surface-hardened layer improved approximately 3-fold【Surface-hardened layer】

Bearing for Backing Shafts

Developed steel

Hardness(HRC)
Carburized steel

Shaft (backing shaft)60

3-foldApprox.

40

Carburized steel
Outside surface

Measured positions

Bore surface【 typical hardness distribution of cored hardening outer ring 】

For more information, please refer to catalog No. B2012E.
11

12

Steel production equipment

Drive shafts for rolling mills
We provide high-strength, long-life drive shafts that havegood torque transfer efficiency under severe environments.

Contributing to stronger, longer-life drive shafts

1 Application of different diameter rollers for cross & bearing
Required performance and issues

Features

Stronger, longer-life drive shafts capable of handling increased rolling torque

Roller diameter at the end of the cross reduced slightly
Uniform multi-row roller load

Unequal loads

Heaviest at cross end

Equal loads

Load distribution

Bearing cup【Longer service life】

Stronger, longer-life drive shafts for use with smaller rolling-mill roll diameters

Rollers(Torque load)

Conventional typeProtecting rolling-mill drive systems from excessive torque1.4

Approx.

Ability to randomly adjustment the roll rotational phase-fold(Torque load)

Cross(elastic construction)

Conventional productDeveloped product

Example of block-type configuration

Features ・Increasing of residual compressive stress at subsurface

・Increasing of surface hardness
・Fine surface roughness (Removal protrusion)

3 Bearing cup

Feeding
Liquid pressure【Longer service life】

Ceramic ball
Conventional type

Thrust washer

Work piecerotation

1.7-fold

Residual Compressive stress, MPa

2 Ball burnishing on cross shaft

Ball burnishedAs carburized

Approx.
Rollers 1

3 Thermal spraying coat of tungsten carbide (WC) on bearing cup key
Features

Roller guide

Depth from surface µm

Restraining of clearance between key and key way due to corrosion wear
Alleviating bending stress of bolt ･･･ Restraint of Strength reduction
Minimizing heavy load at cross end ･･･ Longer service life

13 months

20 months

Without WC coat(corrosion)

WC coated product(no corrosion)【Improved corrosion resistance】

5 Oil seal

Conventional type2 Cross

1.5

Approx.

Slinger-fold or more

Features ・Thread section processing changed from machining to form after heat treatment

・Fiber flow is formed along the shape of the thread
・Residual compressive stress at subsurface beneaththe bottom radius of the thread increases【Improved fatigue strength】

Conventional typeThe block-type configuration is part of the D/U/T Series; theproducts of which are the strongest and have the longest service
life in the JTEKT line-up. It is used in rolling mills such as Platemill, Blooming mill and Hot strip mills (roughing/finishing) whereconditions are extremely harsh.

1.9-fold

Approx.

【 Fiber flow of rolled thread 】

Residual Compressive stress, MPa

4 Application of form rolling to bearing set Bolt

4 Bearing fixed bolts

Rolled thread
Machined thread

Depth from surface µm【 Residual compressive stress distribution of rolled thread 】

For more information, please refer to catalog No. B2021E.
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Steel production equipment

Improved service life of oil seals and cross bearings

Optional mechanisms supporting drive shafts for rolling millOperating principle

Hyper coupling (torque limiter)

5 Development of a high-sealing oil seal

Hydraulic expansion chamber(oil-pressure charged)

4 shear valves(with oil pressure retained)

Operating environment

Movement of oil seal during operation

Rolling mill water

Rotational oscillating motion

Scale

Axial oscillating motion＋

・Significantly improved operating precision and durability
・Easy to set operating torque・Significant reduced recovery time after finishing operation＋

Permanent elongation of each lip portion

At excessive torque

Reduction in oil seal sealing performance
1 Material change

Torque transmission surface(connection by friction)

Shear valve (shearing)

Hydraulic expansion chamber(oil pressure released )Low sealing performance of the side lips

(residual deformation)

At normal

Features ・Device for protecting rolling mill drive system from excessive torque2 Shape changes

Support bearing
Sliding surface (clearance)
Support bearing

Recovery work process (required time: 30min)
１
2
3

1 Improved sealing performance through material change

1 【Confirmation of permanent elongation】

・Reduction of permanent elongation under rolling mill water and2 Improved sealing performance through shape change

・By changing from side lip seal thrust contact to radial contact,

sealing performance relative
to axial oscillating motion has improved
・Reduced decline in lip tension by 80% compared to conventional

50%

1.2
Permanent elongation ratio

high temperature (90°C) environment by 50% compared toconventional

reduction

1.0
0.8
0.6
0.4
0.2
0
Conventional
products

These changes suppress sudden damage to thecross bearing caused by deterioration in lubricating
ability, thus contributing to reduced maintenancecosts and improved productivity for customers.

Developed
products

Tension reduction ratio after endurance test

FeaturesPhase alignment
Shear valve replacement (x4)Re-pressurizing hydraulic expansion chamber

2 【Confirmation of lip tension】

80%

1.2

reduction

1.0
0.8
0.6

Optional mechanisms supporting drive shafts for rolling mill

0.4
0.2
0
Conventional
products

Developed
products

Conventional product: NBR (nitrile rubber)
Developed product: NBR (high nitrile rubber)

Roll phase adjustment device (for bar & rod mill)

Product example

Screw reinforcing bar

Features ・Device enables the rotational phase of rolls to be randomly

adjusted when producing screw reinforcing bar anddeformed steel bar used for construction.
・Phase can be adjusted almost seamlessly in a short time,
improving product accuracy.
・Operation being possible without dismounting the drive shafts.
Fixing nut

Before adjustment

Phase adjusting nut

Bearing cup
Roller guideOil seal

After adjustment

Slinger
Cross

Adjustment work process (online work)
１
2

Rollers
Thrust washer

15

3
4
5

Measure misalignment of workpiece
Set adjustment angle
Loosen the fixing nut
Turn the adjusting nut the required amountTighten the fixing nut

16Bearings for sintering machine pallet car

Bearing units for plate levelers

Sintering machines are used in harsh environments where high temperaturesand large amounts of dust are generated. We provide sealed bearingsand mill-scale seals capable of withstanding these kinds of environments.

We provide plate leveler units to cope with severe usage environments
such as heavy loads, rust and the intrusion of water / foreign matter.

Required performance and issues

Required performance and issues

Measures for heavy load / shock load

Stable operation under heavy load

High corrosion resistancePrevent the intrusion of water / foreign matter

Preventing intrusion of dust
Roll strength and bearing load rating improved as theresult of integrating the roll and outer ring structure

Pressure roller bearings

Special stainless steel for rolls developed(sealed type double row cylindrical roller bearings)
Features

Optimized outer ring thickness and carburized steel adopted
Capable of withstanding heavy loads/impact loads

Seal and shield are combined to form a labyrinth structurethat has excellent sealing performance

Sealing structure using special seal
Prevents the intrusion of dust
Full roller shape adopted
High load capacity realized

Wheel bearings(sealed type double row tapered roller bearings)
Features

Integrated seal structure offers both high load capacity andexcellent sealing performance
Can withstand heavy loads and prevents the intrusion of dust

Intermediate seal
Features

Structure combining two parts ( 1 and 2 )No damage to peripheral parts
High sealing performance owing to multilayer lip structure
Prevents the intrusion of dust

Bearing units for tension levelers
We provide optimal tension leveler units that are compatiblefor high-speed rotation, wet / dry environments and low torque.

Required performance and issues
Low torque

Tightly sealed structureHigh section height accuracy

1

2

Wet-specification unit has an oil seal that forms a tightly sealed structure
and also realizes lower torqueDry-specification unit has a labyrinth seal structurethat realizes the lowest possible torque
Addition of a suitable, uniform corrective force bycontrolling bearing section height (H) dimensional accuracy

1718

Large Size Bearing Technology Development Center
JTEKT’s accumulated knowledge and experience helps our customers solve problems. We provide new,high- value-added products and processes for businesses with a global supply system developed to meetthose demands.

Regarding large bearings used in the industrial
machinery field, there have been many cases in thepast where customers evaluate by using actualmachines after conducting desk review and basic

Catalog Series for JTEKT Steel Production Equipment Products
Please contact JTEKT to request a catalog or for advice regarding other technical issues or concerns.

JHS Series RZ-type
Spherical Roller Bearings

Roll neck bearings
for rolling mill

Cylindrical Roller Bearings
for Multi-roll Mill Backup Rolls

CAT.NO.B2023E

CAT.NO.B2013E

CAT.NO.B2012E

Oil Seal
For Steel Production Equipment

Drive shafts for steel production/industrial equipment

JHS Series
Hyper Coupling

CAT.NO.B1020E

CAT.NO.B2021E

CAT.NO.B1010E

evaluation. As a result, development took too long
due to unforeseen problems that arose.
At the Large Size Bearing Technology Development
Center which was established and launched
operations, evaluation tests in environments closeto actual machines are now possible within JTEKT.
The accumulated data will be used to raise theaccuracy of CAE analysis (simulation analysis) which
will result in significant reduction of the productdevelopmental period as well as the development ofnew, high-value-added products.

Bearing testing equipment
for steel production equipment
Our testing equipment is able to evaluate thescattering rolling mill water in high-temperatureenvironments to recreate close to actual
conditions.
In this way, we can deliver bearings and oil seal
components with excellent performance.

19

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Providing high quality and cutting- edge technology for the world
Manufacturing in Japan enables JTEKT state- of- the- art material and technology
to be implemented to JTEKT products, which leads to delivering top quality and excellent performance.
Furthermore, JTEKT can contribute high quality andappropriate technical support to customers worldwide through JTEKT global network system.

Our Customers
around the WorldJTEKT Technologies and Quality from Japan
21

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OFFICES
KOYO CANADA INC.

KOYO SINGAPORE BEARING (PTE.) LTD.

JTEKT NORTH AMERICA CORPORATION-Regional Headquarters-

JTEKT KOREA CO., LTD.

3800A Laird Road, Units 4&5 Mississauga, Ontario L5L 0B2, CANADATEL : 1-905-820-2090
FAX : 1-877-326-5696

7 Research Drive Greenville, SC 29607, U.S.A.
TEL : 1-864-770-2100
FAX : 1-864-770-2399-Plymouth Office-47771 Halyard Drive, Plymouth, MI 48170, U.S.A.
TEL : 1-734-454-1500
FAX : 1-734-454-7059

24 Penjuru Road #06-01 CWT Commodity Hub,SINGAPORE 609128
TEL : 65-6274-2200
FAX : 65-6862-1623

Seong-do Bldg 13F, 207, Dosan-Dearo, Gangnam-Gu, Seoul,06026, KOREATEL : 82-2-549-7922
FAX : 82-2-549-7923

JTEKT (CHINA) CO., LTD.

Room.25A2, V-Capital Building, 333 Xianxia Road, Changning
District, Shanghai 200336, CHINATEL : 86-21-5178-1000
FAX : 86-21-5178-1008-Cleveland Office-29570 Clemens Road, P.O.Box 45028, Westlake,
OH 44145, U.S.A.
TEL : 1-440-835-1000
FAX : 1-440-835-9347

KOYO AUSTRALIA PTY. LTD.

316 W University Dr., Arlington Heights, IL 60004, U.S.A.
TEL : 1-847-253-0340
FAX : 1-847-253-0540

JTEKT EUROPE BEARINGS B.V.

Unit1/17 Stanton Road, Seven Hills, NSW, 2147, AUSTRALIATEL : 61-2-8719-5300
FAX : 61-2-8719-5333-Chicago Office-

KOYO MEXICANA, S.A. DE C.V.

Av. Insurgentes Sur 2376-505, Col. Chimalistac, C.P. 01070,
Del. Álvaro Obregón, México, D.F.
TEL : 52-55-5207-3860
FAX : 52-55-5207-3873

KOYO LATIN AMERICA, S.A.

Edificio Banco del Pacifico, Planta Baja, Calle Aquilino de la
Guardia y Calle 52, Panama, REPUBLICA DE PANAMATEL : 507-208-5900
FAX : 507-264-2782/507-269-7578

KOYO ROLAMENTOS DO BRASIL LTDA.

Avenida Brigadeiro Faria Lima, 1744 – 1st Floor – CJ. 11,
Jardim Paulistano, Sao Paulo - SP - Brazil CEP 01451-001
TEL : 55-11-3372-7500
FAX : 55-11-3887-3039

KOYO MIDDLE EAST FZE

6EA 601, Dubai Airport Free Zone, P.O. Box 54816, Dubai,
U.A.E.
TEL : 97-1-4299-3600
FAX : 97-1-4299-3700

Markerkant 13-01, 1314 AL Almere, THE NETHERLANDSTEL : 31-36-5383333
FAX : 31-36-5347212-Benelux Branch Office-Energieweg 10a, 2964 LE, Groot-Ammers, THE NETHERLANDSTEL : 31-184-606800
FAX : 31-184-606857

KOYO KULLAGER SCANDINAVIA A.B.

Johanneslundsvägen 4, 194 61 Upplands Väsby, SWEDENTEL : 46-8-594-212-10
FAX : 46-8-594-212-29

KOYO (U.K.) LIMITEDWhitehall Avenue, Kingston, Milton Keynes MK10 OAX,UNITED KINGDOMTEL : 44-1908-289300
FAX : 44-1908-289333

KOYO DEUTSCHLAND GMBH

Bargkoppelweg 4, D-22145 Hamburg, GERMANY
TEL : 49-40-67-9090-0
FAX : 49-40-67-9203-0

KOYO FRANCE S.A.

1 rue François Jacob, 92500 Rueil Malmaison, FRANCETEL : 33-1-4139-8000
FAX : 33-1-3998-4230

KOYO BEARINGS INDIA PVT. LTD.

C-101-108&114-117 First Floor, M3M Cosmopolitan, Golf Course
Extension Road, Sector-66, Gurugram, Haryana 122002, INDIATEL : 91-124-4264601/03
FAX : 91-124-4288355

KOYO IBERICA, S.L.

Centro de Negocios Calle La Mancha no.1,
oficina 1.2 28823 Coslada, Madrid, SPAINTEL : 34-91-329-0818
FAX : 34-91-747-1194

JTEKT (THAILAND) CO., LTD.

172/1 Moo 12 Tambol Bangwua, Amphur Bangpakong,
Chachoengsao 24180, THAILANDTEL : 66-38-533-310~7
FAX : 66-38-532-776

PT. JTEKT INDONESIA

Jl. Surya Madya Plot I-27b, Kawasan Industri Surya Cipta,
Kutanegara, Ciampel, Karawang Jawa Barat, 41363 INDONESIATEL : 62-267-8610-270
FAX : 62-267-8610-271

KOYO ITALIA S.R.L.

Via Stephenson 43/a 20157 Milano, ITALYTEL : 39-02-2951-0844
FAX : 39-02-2951-0954-Romanian Representative Office-24, Lister Street, ap. 1, sector 5, Bucharest, ROMANIATEL : 40-21-410-4182
FAX : 40-21-410-1178

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

TEL:81-6-6271-8451

FAX:81-6-6245-3712

No.5-8, Minamisemba 3-chome, Chuo-ku, Osaka 542-8502, JAPANTEL:81-6-6245-6087

FAX:81-6-6244-9007

The contents of this catalog are subject to change without prior notice. Every possible
effort has been made to ensure that the data herein is correct; however, JTEKT cannot
assume responsibility for any errors or omissions.

Reproduction of this catalog without
written consent is strictly prohibited.

JTEKT CORPORATION OSAKA HEAD OFFICE

No.5-8, Minamisemba 3-chome, Chuo-ku, Osaka 542-8502, JAPANSales & Marketing Headquarters

CAT.NO. BA010EN-0CH
Printed in Japan

18.05-5BCH