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Schaeffler coatings portfolio

Schaeffler Coating Tool Box: Customized Surface Technology

Schaeffler coatings portfolio2


Surface Technology

Coating

Base material

No change in dimension.

Added Value throughSurface Technology.

► Surface Technology as design element for leading products with added value.

► Inhouse development and worldwide production in same quality.

Increased lifetime.Increased functionality.

Corrotect®

Corrosion Protection

WearProtection

Durotect®

Insulation

Insutect® Triondur®

Sensotect®

Sensor CoatingFriction Reduction

Schaeffler Coating Tool Box

21/03/2018

Coatings In Roller Bearings

21/03/2018 Schaeffler coatings portfolio3


Corrotect® ZI, ZN + A*/N*• corrosion protectionDurotect® Z• wear protection (fretting)Insutect® A• current insulationDurotect® P, CM, CK• wear protection (fretting) • friction reduction

Triondur ® C• wear protection (slippage)• friction reductionDurotect® B• wear protection (slippage)• WEC protectionDurotect® CM,CMB (needles)• wear protection

Triondur ® CX+

• friction reduction• wear protectionDurotect® M,Z• friction reductionDurotect® C,S• emergency lubricationDurotect® P• friction reduction

Durotect® B• wear protection (slippage)• WEC protectionTriondur ® C (ball bearings)• wear protection (slippage,

false brinelling)• friction reductionDurotect® CM• wear protection (false brinelling)

racewaysracewaysinner and outer diametersend facesinner and outer diametersend faces

cagescages rollersrollers

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Coatings In Roller Bearings




Corrosion protectionSchaeffler coatings portfolio

0 100 200 300 400 500 600 .... 1000

Corrosion resistance [h]

∞

1000

100

10

1,0

0,5

Coat

ing

thic

knes

s[µ

m]

Corrosion resistance, neutral salt spray test acc. DIN EN ISO 9227

Corrotect®

A*, C*, F*, N*

Durotect® Z

Durotect® CM

Durotect® NP Corrotect® ZK

Corrotect® ZI

Corrotect® ZN

Corrotect® ZF


Corrosion protectionSchaeffler coatings portfolio

Corrotect® ZK (Zinc):Corrosion protection for parts with low requirements on corrosion protection, cost effective solution.

Corrotect® ZI (Zinc-Iron):Corrosion protection for medium to high requirements on corrosion protection.Comparably cost effective, easy to handle.

Corrotect® ZN (Zinc-Nickel):Corrosion protection for high and highest requirements on corrosion protection.Comparably expensive, shows no contact corrosion to Al alloys, poor macro throwability.

After treatments: Chromating / Passivating increases the corrosion resistance of the zinc(alloy) coating

"C" yellow chromated "F" black chromated "A*" DISP passivated "B" bleu passivated"N*" Nano-DISP pass.


Wear protectionSchaeffler coatings portfolio

0 500 1000 1500 2000 2500 3000 .... 10000

Hardness [HV]

∞

1000

100

10

1,0

0,5

PVD(PA)CVD

Thic

knes

s [µ

m]

Diamond

Hard metalSteel

Nitrating

Isotect® A

Durotect® NP

Durotect® CM, CK

Triondur®



Durotect® B (Black oxidation) (DIN 50938), properties

Composition: mixed Iron( II,III ) – Oxides = z.B. Fe3O4

Colour: Black

Surface structure: remains

Thickness: 0,5 ... 2,0 µm

Fit problems: none, increase = decrease

Other properties: - smooth and without structure- stable against bending and abrasion- magnetical and electrical properties of the base material remain- stable against solvents, bases and varnishes- not stable against acids

Temperature resistance: up to 300°C without discolouration

Salt spray resistance: - Without oil: max. 30 min.- with oil: max. 24 h


Providing solutions in adverse conditionsSchaeffler coatings portfolio



Hard chrome coating

Optical aspect

● Durotect® CM

(Protect D)

● typical microcracks

● Durotect® CK und CK+

(Protect A /B)

● typical nab structure

30 µm 10 µm



Triondur® available coatings

Coating structureHardness

ThicknessApplications

Triondur® C

(Me-DLC)

1500 HV

1÷4 µm

Bearings, PTSM,Reduction of wear and friction, stable to roll over even at high loads

Triondur®

C+/CX+

(DLC)

2600 HV

2÷4 µm

TSTM, PSTM, pistons highest wear resistance together with friction reduction

Triondur® CN

Cr-basiert

2600 HV

1÷2 µm

TSTM, friction reduction in valve train by optimized surface quality

Triondur®

CNN

multi layer

Cr-basiert

1600 HV

up to15 µm

ASEH and KEEH, wear protection, high loads and shearing strain, start-up coating

Energy Efficiency – Triondur® DLC CoatingsSchaeffler coatings portfolio

Triondur® DLC coatings:

► Excellent friction reduction under mixed and boundary lubrication conditions.

► Only coating of the rollers is necessary.

► Coating thickness 2 µm no additional installation space.

FAG spherical roller bearing test rig R32.

low middle highn = 2000 1/min

0

5

10

15

20

25

30

low middle highn = 40 1/min

Fric

tion

mom

ent [

Nm

]

uncoated

Triondur®

poor lubrication good lubrication

- 44 %

- 44 %

- 37 %

bearing load bearing load

0

5

10

15

20

25

30uncoated

Triondur®

14 Schaeffler coatings portfolio21/03/2018

Increased Lifetime – Triondur® C



Triondur® C coated barrel rollers prevent slippage damage under poor lubrication conditions (low rpm, high loads).

Wind TurbineMain Shaft Bearing


Strain gage sensor concept• For strain measurement, a strain sensitive alloy is

deposited by advanced PVD (Physical-Vapour-Deposition) technique

• Local shaft strain measurement enables torque determination

• Measurement on shaft requires telemetry for data transmission to stand-still structure

Strain gage

Ω

0

500

1000

1500

2000

2500

-5 0 5 10 15 20 25 30 35

Se

nso

r S

ign

al [-

]

Torque Reference [Nm]

Sensor Signal [-]

15,2 15,5

Hysteresis < 0,1 Nm

0,25 % FS

Coated wheel bearingCharacteristic curve

Schaeffler coatings portfolioSensor Coating - Sensotect®



Metal coating MaskingDeposition of contact pads

Laser structuring



Technical data:• Supply voltage 7-18 V• Analog signal output 0,5 – 5 V• Analog signal resolution 1,2 mV• Digital signal output via CAN• Digital signal resolution 12-bit• Sampling rate max 800 Hz @ 12 bit

Prototype telemetry Telemetry assembled on shaft

Telemetry rotor and stator

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