tapered roller bearings in x-life quality customer information...x-life trb product features, such...
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Schweinfurt, 2019
Tapered Roller Bearings in X-life qualityCustomer Information
Distributed By:
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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
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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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is it?
Definition of X-life – Schaeffler standard S 109001
July 20193
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X times longerservice life
X times moreefficient use of
space
X times greaterload-carrying
capacity
Higherload rating
"X-life – proven to be better"
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is it?
Customer benefit
July 20194
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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?
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is it?
Customer benefit
July 20195
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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?
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is it?
Customer applications
July 20196
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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
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 20198
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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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is the benefit?
One-Pager – product characteristics
July 20198
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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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what is the benefit?
One-Pager – product characteristics
July 20199
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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
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 201911
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§ 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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Superior material & enhanced heat treatment
July 201911
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§ 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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Superior material & enhanced heat treatment
July 201912
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§ 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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Optimized lip-roller contact
July 201913
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§ 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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Optimized rolling contact surfaces
July 201914
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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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Optimized contact surfaces
July 201915
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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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Optimized contact surfaces
July 201916
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§ 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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Optimized surface, higher dimensional & running accuracy
July 201917
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§ 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
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Improved inner design
July 201918
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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.
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Standardization of sheet metal cage design
July 201919
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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
C = 157 kN (old version)
D = 130 mm
Weight: 2,19 kg
T7FC060
C = 153 kN (old version)
D = 125 mm
Weight: 2,08 kg
C = 181 kN X-life
D = 125 mm
Weight: 2,08 kg
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
Downsizing – 600g weight or 15mm mounting space-Ø
July 201920
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§ 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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – what are the technical advantages?
X-life product features in comparison to standard bearings
July 201921
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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
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 201923
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§ 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 roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – how does the assembly work?
Mounting of X-life products
July 201923
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X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – how is the roll-out managed?
X-life Marketing campaign – internet
July 201924
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► Product Features
► Technical Advantage
► Types available
X-life TPI
New Technical Product Information out now
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life – how is the roll-out managed?
X-life TRB TPI241
July 201925
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Ta p e r e d Ro l le r B e a r i n g s
X-life roll-out Tapered Roller Bearings – © Schaeffler Technologies AG & Co KG, 2019
X-life roll-out TRB
Thank You
July 201926
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