Hybrid Bearing Units for Special Environments

CATALOG NO.4000E

CERABALL SERIESThe Ceraball series exhibits extremely high antiabrasion qualities and offers remarkably stableperformance in the most severe environments.
In 1984, for the first time in Japan, FYH succeeded in the production of total ceramic bearings from start-to-finish
production of raw materials. Since that time, user feedback has confirmed that this series has proven itself as theultimate choice for a multitude of special operating environments. After more than two decades of continual
development, this series has been evaluated as "the most reliable maintenance-free bearing" for any industry, andit has evolved to include a variety of options to satisfy many specific needs.

The ceramic balls and precision inner and outer rings of the Ceraball bearing demonstrate
excellent wear resistance and provide longevity and stable performance in applications
where temperature extremes, high speed, torque, and corrosion are factors.

Ceraball features◎Reduced maintenance costs
Re-lubrication intervals can be significantly extended
or eliminated altogether.
◎Green bearings
Excessive grease discharge can be eliminated thereby
contributing to a cleaner environment.
◎Independent operation
Supplementary items such as cooling devices andautomatic grease replenishment systems can beeliminated.
◎Low friction
Low friction operation reduces the amount of energy
required thereby saving electricity and money.
◎High stress resistance
The threat of shattering from foreign matter incursion
is greatly reduced which creates a safer working
environment.
◎Non-conductive
Electric arcing is eliminated.

Ceramic bearing material of the FYH-SN series

Material property of FYH-SN

FYH-SN

Bearing steelHeat resistance (temperature, °C)

800

180

Density (g/cm3)

3.2

7.8

Bending strength (MPa)

1200

≧2500

Hardness (Hv)

1400 or more

750

YANG's modulus of elasticity (GPa)

320

210

Coefficient of thermal expansion (× 10-6/ °C)

3.3

12.5

6.0 or more

18

1/2

Fracture toughness (MPa·m )silicon nitride ball production process

MaterialPowder

CIP Vessel

HIP Vessel

High Fluid Pressure

Heat and Pressure

Cold Isostatic
PressMilling

Hot Isostatic
Press

PreSintering

Forming

SinteringSurface
Inspection

Grinding

Granulation

Grinding/Lapping

kN
30
2015

Ceramic Ball Crush Test

FYH

Company ACompany B
Ball Crush Strength (3/8")

FYH has established a superior production process from mixing ingredients to molding, sintering, and processing.
Compared with silicon nitride balls produced by other manufacturers, we are proud of the overwhelming highstrength of the Ceraball, and we can promise consistently high quality, better product performance, and longer life.

Maintenance cost reduction example on a heat-treatment furnace
Heat treatment furnaceStandard
unit

Ceraballunit

The standard unit is re-lubricated with hightemperature grease every day and completelychanged every six months.

The Ceraball unit operates for three years
without re-lubrication.

Ceraball selection chart

Bearing units

Bearings

Y1 typeVacuum

High Speed

High Temp

Operating
Environment

Corrosion Resistance

BearingSuffix Code Inner/Outer Ring

Max Operating
Temperature
180° C (356° F)

Y1

D9K6Y1

Max Operating
Temperature
230° C (446° F)

Y2

D9K6S6Y2

Y3 type

Specifications
Ball

Retainer

Lubricant Type

High-carbon chromium
bearing steel

FYH-SN
Silicon nitride ceramic

Stainless steel or Steel
Corrugated retainer

Grease fluorochemical

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Stainless steel
Corrugated retainer

Grease fluorochemical

Max Operating
Temperature
260° C (500° F)

Y2

D9P4S6Y2

Max Operating
Temperature
450° C (842° F)

Y3

S6Y3

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Self-lubricating material

Ambient
Atmospheric
Conditions

Y1

D7(LS)S5Y1

High-carbon chromium
bearing steel

FYH-SN
Silicon nitride ceramic

Stainless steel or Steel
Corrugated retainer

Grease for High speed

High Temp
260° C (500° F)

Y2

D9K3.6S6C3Y2

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Stainless steel
Corrugated retainer

Grease fluorochemical

Normal to High-tempConditions
Max 200° C (392° F)

Y2

D9K6S6Y2

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Stainless steel
Corrugated retainer

Grease fluorochemical

Y3

S6Y3

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Self-lubricating material

Acid / alkali liquid orvapor atmosphere

Y7

Y7

Precipitation
hardening
Stainless steel

FYH-SN
Silicon nitride ceramic

Fluororesin or Stainless steel
Corrugated retainer−Water, pure water,high humidity

Y8Y8PEEKplastic

FYH-SNSilicon nitride ceramic

Fluororesin−Normal temp Mid temp

Y2

D9K6S6Y2

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Stainless steel
Corrugated retainer

High temp

Y3

S6Y3

Martensitic
stainless steel

FYH-SN
Silicon nitride ceramic

Self-lubricating material

High-temp
Max 400° C (752° F)

Clean

Type

Y2 type＊If your application is not specified above or if you require different specifications, please use the attached form to detail your application and additional requests.
Dimensional data subject to change without notice. Please confirm all dimensions and specifications before ordering.

Grease fluorochemical◎ Part Number for Ordering

Y7 type

Bearing Units

Unit No.
UCP206＋

Bearing Suffix Code
D9K6S6Y2

Deep Groove
Ball Bearings

Bearing No.
6206ZZ＋

Bearing Suffix Code
D9S6Y2

Y8 typeFeatureSealSlinger

Fluoroelastomer

Austenitic
Stainless steel

HousingStandard bearings operating in excessively high/low-temperature conditions, or inenvironments where liquids or gasses are present, require a great deal ofCast ironor Steelmaintenance and monitoring, and they are often subject to sudden failure.
Ceraball bearings incorporating fluorinated grease (operating range: -60 to 260°C

ExampleApplication

Heat-resistant blower
Spray granulating machine
Press & rewinding light torque(-76 to 500°F) ) allow for extended lubrication intervals and longer life.

Austenitic
Stainless steel

Cast iron(heat-resistant paint) or
Stainless steel

When liquids or gasses are present in higher concentrations, standard bearings
operating in temperatures above 180°C (356°F) can deteriorate from surface
oxidation rather quickly. The Ceraball series can be incorporated into stainlesssteel bearings to prevent rapid corrosion. If the operating temperature exceeds
230°C (446°F) then seals are omitted and only slingers (Z-seal) are utilized.

Austenitic
Stainless steel

Cast iron(heat-resistant paint) or
Stainless steelStandard bearings utilizing grease as a lubricant cannot function well above 260°C(500°F). FYH has developed a solid self-lubricating lubricant which can operate intemperatures over 450°C (842°F) particularly at lower RPM’s > dn 5,000.

Austenitic
Stainless steelor SteelCast iron

Fluoroelastomer−−

NitrileFluoroelastomer

Fluoroelastomer−−Austenitic
Stainless steel

Austenitic
Stainless steel

Austenitic
Stainless steel−High speed applications produce a great deal of centrifugal force which is further
increased by standard steel balls. The specific gravity of the Ceraball is 3.2 whichis less than half of a steel ball’s specific gravity of 7.8. With about 40% of the load,Cast ironthe effects of centrifugal force are reduced and the life of the Ceraball bearing is(heat-resistant paint) or

greatly extended.

Food equipment
Wash-down
Heat treatment furnace
With a low reactor
Drying FurnaceGlass Production Line

Heat-resistant blower

Stainless steel
Cast iron

When operating in a vacuum, base oils often evaporate from the grease and deteriorationof the lubricant occurs. Because high-quality fluorinated grease is used, which is enclosed(heat-resistant paint) or
Stainless steel

by fluorine seals within the ball path, this problem is eliminated. The Ceraball provides

Cast iron(heat-resistant paint) or
Stainless steel

The self-lubricating solid lubrication system functions very well at a wide range oftemperatures, and it is well-suited to vacuum-based machinery.

Stainless steel

Vacuum Equipment-5

stable performance to 10 Pa under normal atmospheric temperatures.

For particularly strong solid, liquid, or vapor based acids and bases, FYH has
adopted a separation hardened stainless steel for the inner and outer rings as wellas the Y7 ceramic series that incorporates a special corrosion resistant ceramic

Sputtering system

Film / chemical productionball originally developed by FYH.
Where severe corrosion, metal abrasion, and rust are concerns, polyetheretherketone(PEEK) plastic inner and outer rings are employed as well as the Y8 ceramic series thatincorporates a special corrosion resistant ceramic ball.
It is usually used in the condition of a very light load.

−−−Fluoroelastomer

Austenitic
Stainless steel

Cast iron(heat-resistant paint) or
Stainless steel

Special contaminate-free environments require clean-operating components. Because it
needs less grease, the Ceraball can meet these requirements and, through a wide range

Austenitic
Stainless steel

Cast iron(heat-resistant paint) or
Stainless steel

High-temperature applications requiring solid graphite lubricant may discharge
only a small amount of graphite.

−of temperatures, it releases much less debris than conventional bearings.

Silicon wafer production
Ultrapure water

IC manufacturing-related
equipment Food Equipment

Ceraball model number table

UC type

Bearing No. Nominal bore
diameter

SU typeDimensions (mm)◎: Stock model
Refer to the latest FYH general catalog for mounting configurations and additional housing options.
Dimensional data subject to change without notice. Please confirm all dimensions and specifications before ordering.

Production RangeCeraball model number table

CollarY1. Y2 type

Bearing No. Nominal bore
diameterY3 type

Dimensions (mm)Y7, Y8 type

Production Range◎:Stock model ＊: Contact FYH for availability.
Additional styles and sizes may be available including 6300, 6800, 6900, 600, 620, and thrust bearings. Contact FYH for availability.
Dimensional data subject to change without notice. Please confirm all dimensions and specifications before ordering.

Hybrid Bearing Units for Special Environments

Ceraball Bearing Selection Sheet
Please use this sheet for your information to fax or copy.

Your CompanyTELDivisionFAXYour NameE-MAILQty
Bearing’s size andspecApplications(Circle one or more)High Temp

Corrosion

High Speed

Light TorqueVacuum

Insulation

Others (Remarks)

Current Life of Bearings
Period of Lubrication
Operational Temperature Range

Revolutions
Condition of Use
LoadAtmospheres(Circle one or more)watersteam

corrosive liquid

others (corrosive gasdust)

Distributor

FYH BEARING UNITS USA, INC.
285 Industrial Drive Wauconda, Illinois 60084, USA
TEL: 847-487-9111 FAX: 847-487-9222
E-mail: sales@fyhusa.com
NIPPON PILLOW BLOCK CO., LTD.
HEAD OFFICE/Main Plant
2306 Hirao Miharaku Sakai Osaka 587-0022 JAPANTEL: 072-361-3752 FAX: 072-361-4173
E-mail: info@fyhbearings.com
exports@fyh.co.jp

Reproduction of this catalog without written consent is strictly prohibited2010.05

Hybrid Bearing Units for Special Environments

Ceraball Bearing Selection Sheet
Please use this sheet for your information to fax or copy.

Your Company

TEL

Division

FAXYour Name

E-MAIL

Qty
Bearing’s size andspec

Applications(Circle one or more)High Temp

Corrosion

High Speed

Light TorqueVacuumInsulation

Others (Remarks)

Current Life of Bearings
Period of Lubrication
Operational Temperature Range

RevolutionsCondition of Use
LoadAtmospheres(Circle one or more)watersteam

corrosive liquid

others (corrosive gasdust)

Distributor

NIPPON PILLOW BLOCK CO., LTD.
HEAD OFFICE/Main Plant
2306 Hirao Miharaku Sakai Osaka 587-0022 JAPANTEL: 072-361-3752 FAX: 072-361-4173
E-mail: info@fyhbearings.com
exports@fyh.co.jp

Reproduction of this catalog without written consent is strictly prohibited2010.05