Product Information for
Agricultural and Construction Equipment

CAT.NO.B1009E

Printed in Japan '15.04 -1CCH（'14.11）

For superior strength and durability in all en vironments
Heavy machinery in the agriculture and construction supports economic growth and infra structure,and is indispensable in daily life. JTEKT’s highly functional products contribute to ensuring long service life
in severe conditions and improving reliability.

JTEKT p roducts
supporting hea vy machinery inagriculture an d construction

Under such severe conditions, JTEKT responds withNo.1 & Only One technologies.
01 02 Agricultural and Construction Equipments

Responding to Needs with
No.1 & Only One Technologies
With a manufacturing history of more than 90 years,
JTEKT clearly understands the needs of its customers,
promptly delivers the reliability and product competitiveness required,and backs it up with a global support system.
Needs toAgriculture/Construction Heavy Machinery

Bearing Feature

Improved load performance
Better misalignment endurance

Improved
Durability

Improved
life in contaminated oil

Improved
lubricating technologies

Low friction torque

JTEKT Technology Responding to Needs

1Optimum designtechnologiesExtending maintenance cycle
Reusable

03 04 Agricultural and Construction Equipments

33

Material /heat treatment
technologies

・Inner specification optimization
・Crowning optimization
・Low temperature rise design

4152612Lightweight42

Analysis technologies

GlobalEnvironmental
Preservation

156

Surface reforming
technologies

363

・KE heat treatment:
case-hardened steel
・SH heat treatment: bearing steel

・Shaft System Analysis Program(SSAP)
・CAE analysis(static analysis/dynamic analysis)
・Benchmark evaluation tests
・X-ray/ultrasound analysis

・Special coating process
・Surface roughness optimization

JTEKT products responding to agricultural / construction machinery needs 1
Optimum design technologies

Material/heat treatment technologies

High performance tapered roller bearing

KE heat treatment

SH heat treatment（KE:Koyo Extra-life Bearing）

Apply to case-hardened steel
Outer ring raceway surface
Special crowning（SH:Special Heat Bearing）

Apply to bearing steel

Inner ring rib surface
Special processing

Inner ring raceway surface
Special crowning

KE heat treatment/SH heat treatment

Improved durability (edge stress mitigated by misalignment shaft and low temperature rise)Contact stress (MPa)3000.0
2000.01000.03000.02000.01000.00.0■ Contact stress calculation results
0.004 red

4 000

3-foldConventional product2010

Developed product
2 000

1 000

Load 0.72C
0Conventional productDeveloped productDue to special processing of inner ring rib andspecial crowning of bearing ring,
low temperature rise is achieved.
Bearing endurance also improved byoil film formation-6-4-20

24Improvebrinelling resistance

Suppress
elevation height

Extremely hard raceway surface

8060
40

Developed productRotation speed（min-1）

1 500

2 000

Practical use range

2 500Raceway
Bite mark due
to contamination

Conventional product

1 000

Improvetoughness

Reduce non-metallic
inclusion

Ensure proper amount of cR

Rolling direction

Rolling
element500

Promote eliminationof edge brinelling

Service life
increased

Contamination

20Flaking Initated From Sub - Surface

Flaking from Dent

6-10℃

100

0Mixed Flaking

KE bearing / SH bearing■ Temperature rise evaluation results

Oil temperature (℃)

0Improvewear resistanceType of peeling and countermeasure

Inner ring - roller

3 000

Contact stress (MPa)Life (h)Service life
increasedFailure mode

40

Peeling

CountermeasuresLubrication-induced peeling mode

■ Misalignment durability life evaluation results

30

Special heat treatment realizes extremely hard raceway surface and optimization ofresidual austenite achieves long life. Especially, superior performance in contaminated oil.

3 000

Cumulative failure probability (%)

Due to optimization of inner specifications
and special crowning of bearing ring,
bearing force improved by misalignment.

50SH bearing
10KE bearing
Standard bearing
1101001000

KE:Koyo Extra-life Bearing

05 06 Agricultural and Construction Equipments

10-foldLife (h)SH:Special Heat Bearing

JTEKT products responding to agricultural / construction machinery needs 2Analysis technologies

Surface reforming technology
Special coating process

Verify validity of optimum design
Fully utilizing the Shaft System Analysis Program (SSAP) developed by JTEKT and CAE analysis,
an optimum design that gives peripheral components additional rigidity has been achieved.
Validity is verified through benchmark evaluation tests (including simulation), and X-ray and ultrasound analysis.
【Shaft system rigidity analysis】

Durability 3-fold that of non-coated productCage and roller (C&R) in response to poor lubrication
Roller surface roughness optimized for
improved oil film retention【Contact stress analysis】【Inner temperature measurement results】■ Cage temperature(8000 min−1)
140℃

JHS Series Spherical Roller Bearings（ JHS : JTEKT Hyper Strong ）Abnormal rise in temperature

Normal25℃

JHS Series Spherical Roller Bearings are satisfy the demanding needs of our customers. Manufactured
using innovative materials, an optimal internal design and a standardized dimension stabilizing
treatment, these bearings have a longer service life, faster rotation speed, enhanced axial load
performance and can be used in high-temperature applications.

Innovative materials/Optimal internal design/High-temperature applications supported

Large-sized Bearing Technology Development Center
JTEKT has established and started operation of the Large-size Bearing
Technology Development Center, where large-sized bearings used inindustrial machinery are evaluated and analyzed. Until now, large
bearings were manually inspected and then put into the actualmachinery for basic evaluations. However, the newly establisheddevelopment center enables more detailed evaluation by reproducing
environments close to those of actual use inside the company.

Outer ring・JTEKT specification steel

Axial load
performanceMax.

Max.

4 -fold

compared toour existing products

20 %UP

compared toour existing products

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

Speed
increased
Permissible rotation speed

Inner ringMax.

・JTEKT specification steel

Bearing composition diagram

07 08 Agricultural and Construction Equipments

Longerservice life

25 %UP

compared toour existing products

High-tempuseup to200 ℃

Propeller shaft for construction machinery

Oil sealMaintenance hours reduced by
improving cross bearing life and seal performance.

Long-interval greasing cross bearing

Muddy water resistance technology

Low-torque technology

Greasing interval increased 10-fold

Lip wear width reduced 60%

Rotating torque reduced 30%

Seal lip from double to triple,
and the optimization of the
shape and position

10

Developed
product

Test time

Tub formed using side lip
and metal case.
Directs muddy water downward.

Water content rate ofgrease in cross bearing (%)

60.50

Conventional Developed
product
product

Lip length a and hip thickness b
optimized, lowering strain force
and abrasivenessa1.5
1Conventional product:
remarkable penetrationof muddy water

Springb[Muddy water side]

Main lip

Side lip[Oil side]

DevelopedproductMinor lip0

Conventionalproduct

Test time

Developedproduct

Good

0.50

Each flange bend inhibits
muddy water

4

2

1

Low-torque oil seal for engine / transmission contributes toreducing fuel consumption
Reduced 30%

Metal case

■ Cross bearing muddy water resistance test results
8

1.5Features

Rotating torque (rate)

Oil seal

results using actual car

Side lip added to axle oil seal,creating multi-structured lipthat prevents muddy water
inclusion/oil leakage when traveling.

100

Conventional
product■ Muddy water resistance performance

Sealing performance (rate)

Reduction of contact stress bylength up and crowning optimization

Features■ Cross bearing life test results

Main lip wear width (mm)RollerCumulative failure probability (%)

Thrust washer (PA66+GF)
Abrasion resistance improved byadding glass fiber

Seal technologies responding customers’ needs
for a variety of applications.

Conventional Developedproductproduct

Lowering torque reduced
abrasive effect 1.3-fold

1.5
1Good0.50

Conventional Developed
product
product

Spline seal structure of muddy water resistance improvement

Sealing performance improvement technology

Low temperature technology

Muddy water resistance improved 5-fold

Service life increased 5-fold

Low temperature performance improved 2-foldPrevent suction of muddy water
when spline sliding

Rigidity of seal lip increased bychanging material,from NBR to polyurethane rubber

Function of labyrinth achieved byextending the distance between seal and spline

Water content rate of grease in spline (%)

09 10 Agricultural and Construction Equipments

Conventional
product

6Developedproduct0Test timeFeatures

Sealing performance of hydraulic pump and other parts improvedby enhancing low-temperature daynamic run out followability.
■ 10% recovery temperature at time of 50% extension rate

Low-temperatureenvironment
Conventional Developedproductproduct

b-15℃
-30℃

Conventional product

Design optimization

Developed product020406080
100-70-60-50-40-30-20-10Temperature (°C)

Composition ratio (b/a): Large
Contact angle, R value: Standard

42350
300
250200150100500a■ Spline muddy water resistance test results
8Service life increased

Stable sealing performance maintained by
optimizing design optimized andchanging the rubber material thatinhibits lip torsion caused bysudden servo motor
acceleration/deceleration.

Time (h)Vent (dedicated to exhaust)/O ring

Cover tube

Rate of recovery (%)

FeaturesOil seal

Whole lipmovement
Small lip lean
R value■ Rubber material abrasion characteristics Lip sliding part after abrasion (dry) test

Conventional productDeveloped productStreakContact angle
Wear width

Wear width010

Hydraulic (external gear) pump/motor lineup

Hydraulic Components
With a standard lineup by highly efficient external gear pump technologies,
JTEKT hydraulic systems are built to respond to customer’s requirements and specific needs.

Model

Basic Displacement

Max. Pressure

Hydraulic(external gear)pumps

6 series
43 models

0.25-100cc/rew

33Mp

Hydraulic(external gear)
motors4 series
29 modelsSeries 00.25-100cc/rew

Series 1

Series 2 & 2,5Series 2,6Series 325Mp
Series 0

Series 1

Series 2 & 2,5Series 3Engine
350

Hydraulic pumps

With a basic displacement of 0.25-100cc/rev
and maximum operating pressure of up to 33MPa,wide-range products can be provided tocustomer’s needs.

01300

22.5250

2.6
3200Motor

150
100

Cylinder0510152025303540

Valve/ Block

Electric pump set/power pack lineup

Cooling fan system with hydraulic motor control (HMC)

Model

Flow Rate

Output PowerDC Type0.4-25 L/ min

400-4000 W

AC Type1-25 L/min

550-4000 W

DC Type0.4-25 L /min

400-4000 W

AC Type0.4-25 L /min

550-4000 W

Electric pump set(Micro/ Mini)( HMC system )Hydraulic control of fan speed ensures optimized cooling conditions for the engine and radiator.
Power pack
(Micro/ Mini)

ValveFeatures

・Fuel consumption reduced
・Low noise・On-demand cooling possible
by setting various parameters

Valve/ Block lineup
Hydraulic motor

・Downsizing and Weight reduction
・Fan-stop and Reverse function

Valve

ECU

11 12 Agricultural and Construction Equipments

Hydraulic pumps

Block

Pilot poppet
Solenoide valves

Spool solenoide valves

BAF

MBS

Assocative Function Blocks
for in-Line mounfing

Modular Block System

80120

Global Technical Support (Bearing Development Bases)

www.jtekt.co.jp

OFFICESTechnical centers located around the world
ensure quick response
and technical support for customers' needs.

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 Office-47771 Halyard Drive, Plymouth, MI 48170, U.S.A.
TEL : 1-734-454-1500
FAX : 1-734-454-7059

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

JTEKT KOREA CO., LTD.

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

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 MEXICANA, S.A. DE C.V.

Av. Insurgentes Sur 2376-505, Col. Chimalistac, Del. Álvaro
Obregón, C.P. 01070, 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 SãoPaulo - SP - Brazil CEP 01451-001
TEL : 55-11-3372-7500
FAX : 55-11-3887-3039

KOYO MIDDLE EAST FZCO6EA 601, Dubai Airport Free Zone, P.O. Box 54816, Dubai,U.A.E.
TEL : 97-1-4299-3600
FAX : 97-1-4299-3700

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 Office-Energieweg 10a, 2964 LE, Groot-Ammers, THE NETHERLANDSTEL : 31-184606800
FAX : 31-184606857

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 0AX,
UNITED KINGDOMTEL : 44-1908-289300
FAX : 44-1908-289333

KOYO BEARINGS INDIA PVT. LTD.

C/o Stylus Commercial Services PVT LTD, Ground Floor, The
Beech, E-1, Manyata Embassy Business Park, Outer Ring Road,
Bengaluru-560045, INDIATEL : 91-80-4276-4567 (Reception Desk of Service Office)
FAX : 91-80-4276-4568

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■ European Region
・The Netherlands（Almere）
・Germany（Munich）
・Germany（Künsebeck）
・France（Colmar）
・The Czech（Brno）■ ASEAN Region
・China (WUXI)・Thailand (Bangkok)

Japan (4 bases)■ JAPAN Region
・W-TEC（Osaka）
・C-TEC（Aichi）
・T-TEC（Kanagawa）
・R&D（Nara）

6 avenue du Marais, BP20189, 95105 Argenteuil, FRANCETEL : 33-1-3998-4202
FAX : 33-1-3998-4244/4249

KOYO SINGAPORE BEARING (PTE.) LTD.

KOYO ITALIA S.R.L.

Avda.de la Industria, 52-2 izda 28820 Coslada Madrid, SPAINTEL : 34-91-329-0818
FAX : 34-91-747-1194■ North America Region
・U.S.A.（Michigan）
・U.S.A.（South Carolina）

Via Stephenson 43/a 20157 Milano, ITALYTEL : 39-02-2951-0844
FAX : 39-02-2951-0954-Romanian Representative Office-Americas (2 bases)

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, JAPANJTEKT CORPORATION OSAKA HEAD OFFICE

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

No.5-8, Minamisemba 3-chome, Chuo-ku, Osaka 542-8502, JAPAN13 14 Agricultural and Construction Equipments

KOYO FRANCE S.A.

KOYO IBERICA, S.L.

27, Penjuru Lane, Level 5, Phase 1 Warehouse #05-01.
SINGAPORE 609195
TEL : 65-6274-2200
FAX : 65-6862-1623

China / Southeast Asia (2 bases)

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

PT. JTEKT INDONESIA

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

Europe (5 bases)

KOYO DEUTSCHLAND GMBH

TEL:81-52-527-1900

FAX:81-52-527-1911

TEL:81-6-6271-8451

FAX:81-6-6245-3712

TEL:81-6-6245-6087

FAX:81-6-6244-9007

Product Information for
Agricultural and Construction Equipment

CAT.NO.B1009E

Printed in Japan '15.04 -1CCH（'14.11）