Precision with Klüber Lubrication - klueber.com Precision with Klüber Lubrication Special lubricants ensure reliable, productive and economical operation ... Klüberlub BEM 41-122

Precision withKlüber Lubrication

Special lubricants ensure reliable,productive and economical operation

of linear motion guides

Lubrication is our World

2

Contents Page

Lubricants lined up for smooth operation 3

From plain bearings to load rollers: an overview of linear types 4

How lubricants must perform – and how to find the right one 5

Oil / fluid grease lubrication 6

Grease lubrication 8

Dry lubrication 10

Initial grease lubrication 11

Grease relubrication 12

Relubrication or lifetime lubrication? 12

Miscibility of thickeners 13

Miscibility of base oils 13

Product overview: Lubricating greases for linear motion guides andthreaded spindles 14

Product overview: Fluid greases for linear motion guides and ballscrews 15

Product overview: Lubricating oils for linear motion guides and ballscrews 15

Request for Information 17

Technical Questionnaire 18

We would like to thank the companies Bosch Rexroth AG, THK, Schneeberger, SKF and SNR for kindly supporting us with pictures.

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It all sounds so simple in theory: Acarriage is used to move a certainmass straight along a path, i.e. performlinear motion. It has rollers running in a grooved guide rail. In practice, how-ever, this straightforward principle willsoon reach its limits. Reliability,productivity and economy – they alldepend on utmost precision!

Linear motion guides are found inmachine tools, machining centres,manufacturing robots, measurementand control systems as well as inmedical diagnostic scanners. Accuratestraightness and evenness of allcomponents is a prerequisite of theircorrect function. Other crucial factorsare accurate positioning, repetitiveaccuracy and wear-free operationunder high load, shock loading andshort reciprocating movements. Quietrunning is expected at high speed andacceleration as well as good resistanceto radiation and aggressive media.

These are taxing requirements. As thefield of automation is continuouslydeveloping, producing ever more lineardrives and guideways, these require-ments will continue to become yetmore demanding – for the componentsas well as for the lubricants used.

This brochure aims to provide thereader with an overview of lubricatingmethods and hints for practice. It is toassist you to make the right lubricantselection, meeting common applicationcriteria for the various componentssubject to difficult operating condi-tions. With special lubricants made byKlüber Lubrication, linear systems can

Lubricants lined up for smooth operation

do their job over many years. Innova-tive developments help to attain longerrelubrication intervals or even lifetimelubrication.

Thanks to our experience in the devel-opment and manufacture of lubricants,the know-how of our application engi-neers and consulting at our local salesoffices we make selection of the rightlubricant to optimise your linear motionguide or linear drive an easy task. Tocommence this process we requestyou complete the technical question-naire on the final page of this brochure.As you will discover: Klüber Lubricationwill bring even more precision to yourtechnology!

From plain bearings to load rollers:an overview of linear types

Linear ball bearings /

shaft guides,

ball bushings

Profiled rails with

recirculating balls

Profiled rails with

recirculating rollers

Flat cage guides /

longitudinal guides with balls,

needles or rollers

Roller guides

Ball screw drives

Roller screw drives

Robots, linear tables, linear modules, tooth-and-rack guides,

electrical lifting cylinders

Sliding motion Rolling motion Example

Linear plain bearings /

sliding bushes

Profiled rails with sliding layer

Flat guides /

guide rails with

sliding layer

Trapezoidal screw drives

Linear guides and guidance systems

Drive systems

Combined drive and guidance systems

4

The choice of lubricant has a strongimpact on the service life and perfor-mance of linear motion guides. Theconsequence of a starved lubricationregime resulting in the development oftribocorrosion may be as severe astotal component failure. To avoid this,we will provide you with the right lubri-cant, which must ensure the following:

❑ Lowest torque when starting upthe system, i.e. under mixed-fric-tion conditions

❑ Wear protection of the linearmotion guide components

❑ Noise-dampening effect at highspeeds

❑ Good corrosion protection whenexposed to aggressive media

❑ Sealing effect protecting the com-ponents against contamination

How lubricants must perform – and how to find the right one

There are different design types oflinear motion guides and ballscrews fordiffering applications and their varyingrequirements. Tribologically, one differ-entiates between sliding-contact androlling-contact guideways (table 1). In complex linear systems as are foundin handling gears, automation unitsand robots, a combination of guide-ways and drives are used to control inall three axes x,y,z. When choosing alubricant for such applications, thelubrication point that is the most diffi-cult under tribological aspects is takenas the yardstick. This may be, forinstance, a vertically mounted com-ponent, a ballscrew (carrying a higherload than the profiled ball guideways in machine tools) or the presence ofmachine swarf or coolants. Whateverdemands and influences exist, Klüberwill be pleased to assist you with lubri-cant selection.

A suitable lubricant and all the know-how needed for eachapplicationKlüber’s self-image is not solely that ofa developer, manufacturer and supplierof high-performance lubricants, butalso of a specialist consultant whoactively participates in the provision ofindividualised, customer-specific lubri-cant recommendations (offered as anadditional service free of charge). Thisalso includes support with the designand development of lubricant reser-voirs for linear motion guides. Besidesa wide range of oils and greases,Klüber Lubrication also offers “drylubrication” technology solutions:Bonded coatings may be used toimprove the sliding friction of linearguideway seals made of plastic orelastomers. Klüber will supply thelubricant chosen for your application in the type of container desired; specialpack sizes or customer-labelling is alsoavailable on request.

5

high viscosity(100 to 500 mm2/s)

low viscosity(25 to 70 mm2/s)

medium viscosity(approx. 100 mm2/s)

Speed

l o w

< 15 m/minvibration < 0.5 m/s2

Speed

m e d i u m

15 to 60 m/minvibration < 1 m/s2

Speed

h i g h

> 60 m/minvibration < 2 m/s2

Speed-viscosity ratio

higher wear higher friction heat

➡➡ ➡

Selecting the right viscosityBased on our many years of experience, the following overview is to assist with the selection of tried-and-tested base oil viscosities for the various speedconditions.

6

Oil lubrication is often selected onequipment where other machine ele-ments are lubricated in this manner viause of a centralised lubricating system.

Oil / fluid grease lubrication

Whilst fairly complex in design, thistype of lubrication method offersnevertheless a number of benefits,provided adequate care is dedicated

Linear type Application / requirement Selection criterion

all

Rolling motion guides




Sliding motion guides


all

all

Corrosion protection

Universal

Universal

Universal

Universal

Universal

Universal

Food-processing and

pharmaceuticals industries

Rapidly biodegradable

high speed

medium speed

low speed

low speed

high and medium speed

low speed

Linear type Application / requirement NLGI class

all

all

all

all

all

all

all

all

Universal, low speed

Universal, medium speed

Universal, high speed

Elevated temperatures

High load / micromovements /

vibration

High load / micromovements /

vibration

Food-processing and pharmaceuticals industry

Rapidly biodegradable

NLGI 00/000

NLGI 00

NLGI 0/00

NLGI 0/00

NLGI 00/000

NLGI 0

NLGI 00

NLGI 0/00

Lube oil

Lube oil

Lube oil

Lube oil

Lube oil

Lube oil

Lube oil

Lube oil

Lube oil

Fluid grease

Fluid grease

Fluid grease

Fluid grease

Fluid grease

Fluid grease

Fluid grease

Fluid grease

to the aspect of sealing. Lubricantsupply is continuous, which effectivelyprevents lubricant starvation and con-sequently component failure. The oilflow rate is normally quite high, which

means that heat is dissipated from thefriction point and contaminants are reli-ably removed. NOTE: When lubricating linear motionguides with oils, please bear in mind

that the oil tends to flow from the linearguide system far more rapidly thangrease. To combat this eventuality a con-tinuous supply of oil provided to theupper part of the guide is advisable.

Klübersynth MZ 4-17

Klüberoil GEM 1-46 N




LAMORA D 68

LAMORA D 220

Klüberoil 4 UH1-68 N

Klüberbio C 2-46

Product Remarks

good compatibility with lubricants, also for initial lubrication

CLP gear oil with good wear and corrosion protection




CGLP slideway oil with good demulsifying behaviour towards

cooling lubricants, also tried and tested with plastic guides

CGLP slideway oil with good demulsifying behaviour towards

cooling lubricants, also tried and tested with plastic guides

registered as NSF H1, good ageing and wear protection, also

available in other viscosities

low water hazard ensures unharmed environment, at the same time high

performance, also available with ISO VG 100 as Klüberbio CA 2-100

MICROLUBE GB 00

CENTOPLEX GLP 500

ISOFLEX TOPAS NCA 5051


MICROLUBE GB 00

MICROLUBE GB 0

Klübersynth UH1 14-1600

Klüberbio GM 32-2200

Product Remarks

with high-pressure and antiwear additives, without solid lubricants

good pressure absorption capacity

low base oil viscosity for low friction and smooth running

synthetic base oil with good resistance to ageing



USDA H1 approval, good corrosion and wear protection

low water hazard ensures unharmed environment, at the same

time good wear protection and resistance to water

7

8

Because of a trend towards minimum-quantity lubrication, longer lubricationintervals and simplified design there is

Grease lubrication

increasing demand for special lubricat-ing greases offering high performanceand good corrosion protection. Bene-

Linear type Application / requirement Selection criterion

Lubricant type – grease


primarily with balls





Miniature guides

Roller screw drives

Trapezoidal thread drives










All

All

All

All

All

All

All

All

All

All

All

All

Universal

Universal

Universal

Universal

Universal

Plastic nut

Plastic nut

Plastic nut

Metal nut

Metal nut

Metal nut

Sintered metal nut

Universal

Universal

Universal

Smooth running

Smooth running

Micromovement / vibration

Micromovement / vibration

High load

High temperature

High temperature

Clean room production/semi-

conductor, LCD, HDD production

Clean room production/semi-

conductor, LCD, HDD production

Ultra-high vacuum

Food-processing and

pharmaceuticals industry

Rapidly biodegradable for a

clean environment

Low speed

Medium speed

High speed

High speed

Medium speed

Low speed

High speed

Medium speed

Low speed

High speed

Medium speed

Low speed

High accelerations and speeds

High accelerations and speeds

Normal load

High load

Not in high vacuum, UV light, aggressive media

For high vacuum, UV light, aggressive media

Ambient temperature up to 60°C, not in high

vacuum or aggressive radiation

High-temperature range, under high vacuum,

UV radiation

High-temperature range, UV radiation

fits: grease lubrication offers betteremergency running characteristics,

better noise dampening and a reliablesealing effect.

Klüberplex BE 31-222


ISOFLEX NCA 15

ISOFLEX TOPAS AK 50

Klüberplex BEM 41-132

ISOFLEX TOPAS L 32 N

POLYLUB GLY 151

POLYLUB GLY 801




CONSTANT GLY 2000




ISOFLEX NCA 15



MICROLUBE GL 261

Klüberlub BEM 41-122

Klübersynth HB 72-102

BARRIERTA L 55/2

Klübersynth BEM 34-32

BARRIERTA I EL- 102

Klüberalfa HX 83-302

Klübersynth UH1 14-222

Klüberbio M 72-82

Product Remarks

Lubricating grease, good adhesion and sealing effect



Fluid grease, NLGI 0 for easy application

Good lubricity in linear contact

Good compatibility with plastics



Smooth running due to low base oil viscosity

Good wear protection for long relubrication intervals

High pressure absorption capacity

Impregnating fluid for sintered metal nut

Smooth running due to low base oil viscosity

Good wear protection for long relubrication intervals

High pressure absorption capacity

Frequently for lubrication of machine tool spindles

Long-term lubricating grease resistant to ageing

Tried and tested grease for protection against tribocorrosion

Tried and tested grease for protection against tribocorrosion, contains EP additives

Lubricating grease containing white solid lubricants as reactants

Low-cost alternative to PFPE oils

Low evaporation rate

Primarily supplied in small pack sizes suitable for clean room environ-

ments for relubrication

Low evaporation rate

Extremely low evaporation rate

Meets USDA H1 requirements

Low water hazard ensures unharmed environment; good

water resistance, high pressure absorption capacity

9

10

There are certain extreme operatingconditions that forbid the use of a“wet” lubrication regime. The most

Dry lubrication

obvious example is outer space, whereapplications involving very short slidingdistances are found for experiments

Linear type Component Selection criterion

Ball screw drives

Ball screw drives

Threaded spindle

Threaded spindle

Ultra-high vacuum

Ultra-high vacuum

Bonded coating

Electroplated coating

In the following text are some“lubrication hints” that may help tofacilitate your everyday work.

❑ For delivery of oils and fluidgreases via centralised lubricationequipment NLGI grades 00 and000 are normally used.

❑ Centralised lubrication is alsofeasible for greases K according toDIN 51825 of NLGI classes 0/1/2,however this should be discussedprior to use with the manufacturersof the lubricant and the lubricatingsystem to eradicate problems suchas oil separation or pumping resis-tance as found in long feed lines ofsmall bore dimensions.

❑ NLGI grade 2 greases can beapplied to the lubricating nipple of a linear motion guide by meansof a pressure grease gun. If thecomponent has no lubricatingnipples, the grease can be brusheddirectly onto the sliding surfaces of shaft, spindle or rail. If an even,thin grease film is desired, a sol-vent may be added to the greasefor dispersion. Klüber Lubricationcan supply ready-to-use greasedispersions of this type.

❑ Another option is continuousminimum-quantity relubrication bymeans of a lubricant dispenser.

❑ Special lubricant containers areavailable for miniature guides withlubricating holes – e.g. mini greaseguns.

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and operation under ultra-highvacuum. Depending on the individual requirements, it may

make sense to combine self-lubricating plastic materials or abonded-coating with oil or grease

lubrication to improve emergency-running properties.

UNIMOLY C 220

WOLFRATHERM G 11 RC

Product Remarks

approx. 10 μm sliding layer containing MoS2

approx. 5 μm sliding layer containing MoS2

For information on the coating of elastomers and thermoplastics, please ask for our technical brochure on this subject orrequest technical consulting.

❑ Aspects to consider at an earlystage are compatibility of thelubricant with anticorrosion agents,sealing and plastic cage materials(see also under www.klueber.com,service section: Which lubricant forwhich elastomer?)

❑ Components should be protectedagainst dust and foreign matter;clean parts, if necessary.

❑ Ensure sufficient lubricantdistribution.

NOTE: Following initial lubrication, the

linear guide system should be operatedusing a long stroke length under lowload conditions to ensure optimumlubricant distribution and minimumfriction. The fill quantity is specified bythe linear motion guide manufacturerand is normally approx. 50% of thecomponent’s free space. For highspeeds, it may be as low as 30% of the available free space.

Initial grease lubrication

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❑ We recommend cleaning the guiderail or spindle with a lint-free clothprior to relubrication.

❑ The relubrication quantity isapprox. 50% of the initial lubri-cation quantity.

❑ Frequent relubrication is desirable,i.e. application of small quantitiesat shorter intervals.

❑ If a different lubricant is used forrelubrication purposes, compatibil-ity with the original lubricantshould be determined. Greasesused for relubrication shouldmatch the previous grease’s basiccomposition (base oil type, thick-ener, base oil viscosity, NLGIclass). Please check with thegrease manufacturer.

Grease relubrication

This chapter provides information onthe factors influencing the lubricant lifeand relubrication intervals in your appli-cation.

In general terms, the lubricants usedfor linear motion guides are the sameas those selected for rolling and plainbearings. Tribologically, these compo-nents are closely related, howeverthere is one fundamental difference:Linear motion guides require far morelubricant than a rotating bearing. Thisis due to the fact that the lubricant in alinear bearing system is spread acrossthe guide rail during motion. Further-more, the beginning and end of eachstroke takes place under mixed-frictionconditions, which encourages wear.This makes shorter relubrication inter-vals necessary for linear movements.Intervals can be extended, however, ifimproved seals are used and if a highlyadhesive special lubricant is chosen.

Shorter relubrication intervals can be expected with extreme operatingconditions:

❑ High load C/P < 20; C = basic dynamic load rating in N;P = equivalent dynamic load in N

❑ Short strokes; micro-movements

❑ High temperatures > 70 °C

❑ Aggressive media or radiation

❑ Insufficient sealing

A general formula to calculate therelubrication intervals in linear motionguides does not yet exist. Factors likethe type of linear guide used, variationsin design, the quality of sealing andoperating conditions must be con-sidered, all of which makes the deter-mination of correction factors a diffi-cult task.

For this reason, Klüber Lubricationoffers used-lubricant analyses. Incooperation with the equipmentoperator, tests are performed in thetest bay and in the field, which allow an estimation to be made on thegrease service life. In the automotiveindustry, for example, comprehensivetests are conducted to find out if arequired service life of 15 years can be attained.

Relubrication or lifetime lubrication?

+ miscible

+/- partially miscible

– not miscible

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Base oil must also be miscible

Miscibility of thickeners

Metal soap greases Complex soap greases Greases

Gre

ases

Com

plex

soa

pM

etal

soa

pgr

ease

sgr

ease

s

Al Ca Li Na Al Ba Ca Li Na Bentonite Polyurea PTFE

+/- + +/- + +/- + + +/- + + +

+/- + + + + + +/- + + + +

+ + – + + + + – +/- +/- +

+/- + – + + +/- +/- + – + +

+ + + + + +/- + +/- +/- +/- +

+/- + + + + +/- +/- + + +/- +

+ + + +/- +/- +/- + + +/- + +

+ +/- + +/- + +/- + +/- + +/- +

+/- + – + +/- + + +/- – + +

+ + +/- – +/- + +/- + – + +

+ + +/- + +/- +/- + +/- + + +

++ + + + + + + + + +

Al

Ca

Li

Na

Al

Ba

Ca

Li

Na

Bentonite

Polyurea

PTFE

Mineral Syn- Ester Poly- Silicone Perfluoro- Silicone Poly-

oil thetic oil glycol oil alkyl- oil phenyl-

HC (methyl) ether (phenyl) ether oil

+ + + – – – +/- +

+ + + – – – – +

+ + + + – – + +

– – + + – – – –

– – – – + – +/- –

– – – – – + – –

+/- – + – +/- – + +

+ + + – – – + +

Mineral oil

Synthetic HC

Ester oil

Polyglycol

Silicone oil

(methyl)

Perfluoro-

alkyl ether

Silicone oil

(phenyl)

Poly-

phenyl

ether oil

Legend

Miscibility of base oils

Since base oils and thickeners may vary considerably in their composition, this table can only provide basic orientation. The information it contains is based

on our general experience and knowledge.

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Product overview: Lubricating greases for linear motion guides and threaded spindles

BARRIERTA I EL- 102

BARRIERTA L 55/2



ISOFLEX NCA 15

Klüberalfa HX 83- 302

Klüberbio M 72- 82

Klüberlub BEM 41-122

Klüberplex BE 11- 462





Klübersynth BEM 34-32

Klübersynth HB 72- 102

Klübersynth UH 1 14-222

MICROLUBE GL 261

POLYLUB GLY 151

POLYLUB GLY 801

Designation Application

High-temperature grease for use under high-vacuum, UV light, aggressive

media at medium speeds

High-temperature grease for use under vacuum, UV light, aggressive

media at low speeds

Trapezoidal thread drives / sliding motion guides, for high speeds

Smooth-running grease for high accelerations and speeds, good ageing

resistance

Smooth-running grease also for low temperatures, high accelerations

and speeds

Grease for ultra-high vacuum, good resistance to media, extremely low

outgassing for use in clean-room production

Rapidly biodegradable, excellent resistance to water and pressure

absorption capacity

Grease for high loads

Trapezoidal thread drives / sliding motion guides, for low speed

Universal grease for use at medium speeds offering good sealing and

adhesion

Universal grease for use at low speeds offering good sealing and

adhesion

Lubricating grease for micromovement / vibration

Lubricating grease for high loads, especially roller elements

Smooth running grease for high acceleration and speed, offering good

ageing resistance, clean-room production

Synthetic high-temperature and long-term grease

Lubricating grease for food-processing and pharmaceuticals industries

Lubricating grease for micromovements and high loads

Trapezoidal thread drives / sliding motion guides made of plastic,

for low temperatures and high speed

Trapezoidal thread drives / sliding motion guides made of plastic,

for low speed

Please observe notes on page 16.

15

Product overview: Fluid greases for linear motion guides and ballscrews

CENTOPLEX GLP 500

CONSTANT GLY 2000

ISOFLEX TOPAS AK 50


Klüberbio GM 32-2200

Klübersynth UH 1 14-1600

MICROLUBE GB 0

MICROLUBE GB 00


Universal fluid grease

Impregnating fluid for sinter-bronze nuts in trapezoidal thread spindles

Fluid grease primarily for miniature motion guides

Fluid grease for elevated temperature and speed,

good ageing resistance

Fluid grease, rapidly biodegradable

Fluid grease for food-processing and pharmaceuticals industry

Fluid grease for high loads, micromovements / vibration

Fluid grease for high loads, micromovements / vibration

Product overview: Lubricating oils for linear motion guides and ballscrews

Klüberbio C 2- 46

Klüberoil GEM 1 68 N

Klüberoil 4 UH 1-68N

Klübersynth MZ 4-17

LAMORA D 68


Rapidly biodegradable lubricating oil

Universal lubricating oil

Lubricating oil for food-processing and pharmaceuticals industries

Lubricating and anticorrosive oil

Universal lubricating oil and machine tool slideway oil

Please observe notes on page 16.

Do you wishmore detailed information on our product range?

Do you needmaterial safety data sheets on the products mentioned?

Then order themusing the request form overleaf or by surfing on our web address: www.klueber.com

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17

Sender:

Company

Name

Position

Street

City

Phone

Fax

E-mail

❑ Please send me more Information about the following product(s):

❑ Please quote a price for:

Product:

Quantity:

❑ Please give me a call about the following:

Application:

Product:

❑ Please call me for an appointment

Request for Information

Please complete this form and send it to Klüber Lubrication.

Klüber Lubrication München KGGeisenhausenerstraße 781379 München

Deutschland

Fax no.: +49 89 7876-333

18

Technical questionnaire for linear motion guides/threaded spindles

Type of seal*

Denomination of seal

Mounting position:*

❑ Horizontal ❑ Vertical ❑ Tilted

3. Operating conditions*

max. speed: m/s

max. acceleration: m/s2

Stroke: mm

Static load: kN

Dynamic load: kN

Load per surface unit: N/mm2

❑ Impact load (N) or load-time-diagram in sketchform

Ambient influences: (type, con-centration, temperature, pressure)

❑ Liquid

❑ Vapour

❑ Gas

❑ Dust

❑ Other media

Daily service time: h

Others

Sender:

Company

Name

Position

Street

City

Phone

Fax

E-mail

1. Application

Machine / Equipment

Manufacturer

2. Linear guides/spindle details

Type

Size

Designation

Manufacturer

Material at the component

Special steel

Plastic

4. Additional lubricantrequirements

❑ Low-noise operation❑ High degree of purity❑ Very low friction torque❑ Customer specification❑ Compliance with lubricant

chart (encl.)❑ Food-grade registration as

NSF H1**

Others

5. Lubrication details

Lubricant currently used

Type of lubrication:

❑ Lifetime lubrication [h]

Actual:

Desired:

❑ Lubrication interval [h]

Actual:

Desired:

❑ Relubrication quantity [g/h]

Actual:

Desired:

❑ Manual ❑ Automatic

Lubricating equipment

Lubricant lines (dimensions, pressure,material, type of distributor)

Current lubrication interval [g/h]

Desired lubrication interval (g/h)

Annual lubricant consumption

Other factors

* Minimum information required** National Sanitation Foundation

Tempe-rature [°C]

Temperature atfriction point

Ambienttemperature

estimatedmin. max.

measuredmin. max.

Publisher:Klüber Lubrication München KG

Copyright:Klüber Lubrication München KG

Reprints, total or in part, are permittedif source is indicated and voucher copyis forwarded.

9.36 eEdition 08.04

The data in this brochure is based onour general experience and knowledgeat the time of printing and is intendedto give information of possibleapplications to a reader with technicalexperience. It constitutes neither anassurance of product properties nordoes it release the user from theobligation of performing preliminarytests with the selected product. Werecommend contacting our TechnicalConsulting Staff to discuss yourspecific application. If required andpossible we will be pleased to providea sample for testing.

Klüber products are continuallyimproved. Therefore, Klüber Lubrication reserves the right tochange all the technical data inthis technical brochure at anytime without notice.

19

We are where you are.

Klüber Lubrication – the world market leader in speciality lubricants

• subsidiaries in over 30 countries• more than 1,700 staff• products available worldwide

Klüber Lubrication offers expert tribological solutions. Through our worldwide presence, we meet customers’ needs reliably and on time. We supply tailor-made speciality lubricants to customers from nearly all branches of industry and around the world – oils, greases, bonded coatings, pastes and many more. Over 75 years of experience, industry-specific know-how, and exceptional test facilities all help to optimise our solutions.

Klüber Lubrication München KGA company of the Freudenberg Group www.klueber.com

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Precision with Klüber Lubrication - klueber.com Precision with Klüber Lubrication Special lubricants ensure reliable, productive and economical operation ... Klüberlub BEM 41-122