Tapered Roller Bearings in X-life quality Customer Information...X-life TRB product features, such as: ühigher radial load capacity combined w/ higher axial load capacity üwider

Schweinfurt, 2019

Tapered Roller Bearings in X-life qualityCustomer Information

Distributed By:

X-life - what is the benefit?2X-life - what are the technical advantages?3X-life - how does the assembly work?4

X-life - What is it?1

Tapered Roller Bearings in X-life quality

X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019

X-life roll-out TRB

Agenda

July 20193

X-life = highly reliable productswith an extended rating life &longer operating time

Increased dynamic load rating C

Optimized surfacesand functionally optimizedinternal product design

X-life = eXtended life – proven to be better


X-life – what is it?

Definition of X-life – Schaeffler standard S 109001

July 20193

X times longerservice life

X times moreefficient use of

space

X times greaterload-carrying

capacity

Higherload rating

"X-life – proven to be better"



Customer benefit

July 20194

In addition to extended rating life and usage time,X-life offers energy efficiency in bothtechnical and economic aspects, on the one handregarding the design of the bearingand on the other hand regarding the entireproduct life cycle for each application.

Increased energyefficiency

Higherreliability

Down-sizingpossibilitiesorhigher loaddensity

Reducedgrease andoil con-sumption

Longer operatingtime

Lower overall costs(TCO)

Therefore, X-life is the basis for a holisticTotal Cost of Ownership-approach (TCO).

X-life TRB – significantkey figures:

ü 20% higher basicdynamic load rating

ü Up to 70% extendedrating life

ü Up to 50% reducedfriction (for TRB withlarge contact angle:up to 75%)

ü Up to 20% loweroperatingtemperature

compared to Standardbearing

Why X-life? What is the benefit for our customers?



Customer benefit

July 20195

X-life TRB productfeatures, such as:

ü higher radial loadcapacity combined w/higher axial loadcapacity

üwider range of usablespeeds,

ü precise and more rigidshaft guidance and

ü reduced maintenance

offer significantimprove-mentscompared to standard.

X-life TRBs are used in various industrial applications.

§ Mobile hydraulics(e.g. axial-piston-& orbital-engines)§ Construction and

agricultural machinery(e.g. wheel bearings)§ Processing - vertical

mills§ Steel - rolling stands§ Oil & gas sheaves§ Wind transmission§ Road roller§ Drill head bearing

Where are X-life TRBs found?



Customer applications

July 20196

X-life - What is it?1

X-life - what are the technical advantages?3X-life - how does the assembly work?4

X-life - what is the benefit?2



X-life roll-out TRB

Agenda

July 20198

Applications Types available§ Mobile hydraulics: axial-piston- & orbital-engines§ Tractors: wheel bearings and transmissions§ Vertical mills: grinding rollers§ Hot & cold rolling steel mills: rolling stands –

working rolls§ Oil & gas sheaves§ Off & on shore wind turbines: transmission§ Construction machinery: road roller§ Construction machinery: drill head bearing

§ Change-over of existing core programtypes (up to 420 mm OD)

§ New types up to 635 mm OD§ Types in 320, 322 and 302 series

§ Superior material§ Enhanced heat treatment options§ Standardized cage design

§ Lower operating temperatures§ Higher precision

§ Lower overall costs (TCO)§ Reduced grease and oil

consumption§ Increased energy efficiency

Product Features Technical Advantages Customer Benefits§ Improved rolling contact surface

finishes§ Optimized ring rib & raceway

geometry§ Enhanced roller geometry

§ 20% higher basic dynamic loadrating Cdyn

§ Up to 70% extended life time§ Up to 50% reduced friction

(for TRB with large contact angle:up to 75%)

§ Longer operating time§ Higher reliability§ Downsizing possibilities or

higher load density

X-lif

eco

reas

pect

sad

ditio

nala

spec

ts

100109

Comparison Cdyn

Benchmark Competitor (premium product)FAG X-life

up to

Longer operating time – reliable – energy efficient


X-life – what is the benefit?

One-Pager – product characteristics

July 20198

Material &Heat treatment

OptimizedGeometry

OptimizedSurfaces Higher Precision

ü ü ü Mixed Friction

ü Contamination

ü ü Friction

ü ü ü ü Downsizing

ü ü ü Noise

ü ü Temperature

ü ü ü ü Lifetime

ü ü ü Running in is not necessary

Innovation StepsC

ustomerB

enefit

Adjustments regarding material, geometry and surface qualityÞ 70% extended rating lifeÞ 20% higher dynamic load rateÞ 50% lower friction (large contact angle TRB: up to 75%)

Product information


X-life – what is the benefit?

One-Pager – product characteristics

July 20199

X-life - What is it?1X-life - what is the benefit?2

X-life - how does the assembly work?4X-life - what are the technical advantages?3



X-life roll-out TRB

Agenda

July 201911

§ Increase of wear resistance through use of superior hardened material§ Performance impact of material and heat treatment between standard and X-life TRBs.

Prob

abili

tyof

failu

re

Time [h]

Standard

X-life

L 10, DIN

Selected material in combination with optimized heat treatment


X-life – what are the technical advantages?

Superior material & enhanced heat treatment

July 201911

§ X-life TRBs which are exposed to higher operating temperatures, need to be orderedwith a specific suffix upon request and with technical consultation.

Material Superior bearing steel, through hardened

Outer diameter D ≤ 220 mm D > 220 mm

Max. operating temperature

120 °C

200 °Cupon requestup to 200 °C

Material and heat treatment of through hardened rings



Superior material & enhanced heat treatment

July 201912

§ Lip height is reduced§ Lip roller contact point has been moved closer

towards to the raceway

elliptical contact zone –better defined position ofthe contact point

Optimized geometry of roller and inner ring lip contact reduced friction by approx. 20%

Optimized internal design



Optimized lip-roller contact

July 201913

§ Honed inner ring and roller contact surfaces§ Implementation of surface finishing according to

specification DIN EN ISO 13565(S 103206-50), Abbott curve

Rpk = reduced peak height Rk = core roughness depth

Significantly improved surface parameters forraceway, lip and roller resultsà Up to 75% reduced frictionà Up to 20% lower operating temperature

Rvk = reducedvalley depth

Abbott curve – rolling contact surfaces



Optimized rolling contact surfaces

July 201914

Rk = core roughness depthRpk = reduced peak heightRvk = reduced valley depth

Mr1 = smallest amount of material of the core profileMr2 = biggest amount of material of the core profile

A1 = Peaks of materialA2 = Fraction of valleys

Abbott curveLine of best fit

Material ratio in

Abbott curve – contact surfaces



Optimized contact surfaces

July 201915

ratio of material

"Abbott- curve"peaks- zone

grooves- zone

core zone

core zonepeaks- zone (reduced)

grooves zone

increased

remainà"oil reservoir"

reduced

"scratch area"

"burr area"

Improved production technologies:§ increased ratio of supporting contact area§ better lubrication film built- up

Abbott curve – rolling contact surfaces



Optimized contact surfaces

July 201916

§ Lower surface roughness ofrings and rollers

§ Formation of anelastohydrodynamic lubricantfilm even at very low speeds

§ Optimal load distribution dueto improved dimensional andrunning accuracy

§ Increase in rating life§ High load carrying capacity of the bearing immediately after initial operation§ Reduced development of friction and heat

High impact at low revolution speed



Optimized surface, higher dimensional & running accuracy

July 201917

§ Matchedlogarithmic profileof the raceways andthe outside surface

§ Prevention of stresspeaks in extremesituations(e.g. during highloads and skewing)

§ Increase in ratinglife

Low loads

High loads

High loadswith skewing

Linearprofile

Sphericalprofile

Logarithmicprofile X-life

Overview of improved inner design



Improved inner design

July 201918

Optimized sheet metal cage design: JP.B

§ About 70% of standardFAG TRB use the sheetmetal cage in JP.Bdesign.§ In alignment with the

X-life roll-out theremaining JP sheetmetal cages will bereplaced by JP.B design.§ Technical advantages

are optimized contactconditions betweenroller and cage.§ This improves the

usage time of thebearing.



Standardization of sheet metal cage design

July 201919

2 size smaller – Use of T7FC060-XL instead of T7FC060, T7FC065 & T7FC070

T7FC070 T7FC060-XL

C = 176 kN (old version)

D = 140 mm

Weight: 2,68 kg

T7FC065


D = 130 mm

Weight: 2,19 kg

T7FC060


D = 125 mm

Weight: 2,08 kg

C = 181 kN X-life

D = 125 mm

Weight: 2,08 kg



Downsizing – 600g weight or 15mm mounting space-Ø

July 201920

§ Harmonization of technically most relevant productfeatures

§ Standardization on a higher performance level

§ All product features are well known and thetechnical advantage proven:§ material§ heat treatment§ rolling contact surfaces§ lip – roller contact§ cage design

Summary



X-life product features in comparison to standard bearings

July 201921

X-life - What is it?1X-life - what is the benefit?2X-life - what are the technical advantages?3X-life - how does the assembly work?4



X-life roll-out TRB

Agenda

July 201923

§ Adjustment of the preload by the following criteria: displacement, frictiontorque and force.

§ For a reliable mounting Schaeffler recommends the adjustment bydisplacement.

§ Various factors (e.g. speed, lubrication, temperature) affect theresult of friction torque measurement.

Frictiontorque

RangeStandard

RangeX-life

axial load

§ The friction torque by having the same preload is considerably less fortapered roller bearings with X-life quality than for standard bearings.

displacement

force

friction torque

How does the assembly work?


X-life – how does the assembly work?

Mounting of X-life products

July 201923


X-life – how is the roll-out managed?

X-life Marketing campaign – internet

July 201924

► Product Features

► Technical Advantage

► Types available

X-life TPI

New Technical Product Information out now


X-life – how is the roll-out managed?

X-life TRB TPI241

July 201925

Ta p e r e d Ro l le r B e a r i n g s


X-life roll-out TRB

Thank You

July 201926

Documents

Tapered Roller Bearings in X-life quality Customer Information...X-life TRB product features, such as: ühigher radial load capacity combined w/ higher axial load capacity üwider