Industry Sector Information Construction Machinery

Ground breaking solutions for the construction machinery industry

Vibration Control

Special Sealing Products: Bellows, Diaphragms,Elastomer Composite Parts and Precision Mouldings

O-Rings and Static Seals

Meillor Flat and Frame Seals

Integral Accumulator

Merkel Hydraulics / Pneumatics / Packings

Simmerring®

Simrit®, Your Global Technology Specialist for Seals and Vibration Control

Simrit offers a complete package of

products and services, including leading

brands such as Simmerring®, Merkel,

Integral Accumulator and Meillor.

We can guarantee you a com-petitive edge based on experi-ence all around the world: Sim-rit has a presence throughoutEurope, America and Asia, eit-her directly or through its affilia-ted companies NOK (Japan) orFreudenberg-NOK (USA). Thetransfer of knowledge betweenthese markets is incorporateddirectly into the Simrit servicepackage.

With our many Simrit ServiceCentres and Simrit distributionPartners, we serve and supplymore than 100,000 customersworldwide. Our Simrit Partnersensure rapid availability fromstock. This means spare partsquickly arrive when and wherethey are needed. There is aSimrit Partner near you as well.

Simrit, Your Global Technology Specialist for Seals and Vibration Control offers you acomplete service packa-ge. A unique range of products and servicesguarantees you nume-rous advantages overthe competition.

Simrit acts as a partner to gene-ral industry. Its position as amarket leader is achievedthrough continuous research,development and manufacture.We have the world’s widest ran-ge of seals and vibration con-trol products, and can offer yousolutions based on the demandsof state-of-the-art-technology, so-lutions which set standards.

Make the most of Simrit’s servicepackage and give yourself a real competitive edge:

The technological edge due to constant innovations

Savings in cost and time by using a single source for a uniquely wide range of products

Increased efficiency, usingSimrit's material expertise to extend the service life ofyour components

The competitive edge due to our wide range of valueadded services

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Robust, flexible, individual – Simrit branded products for everyday use in construction machinery

The range of services includes: ■ Weak point analysis to assess

optimisation potential ■ Designing new bearing and

sealing systems■ Project management for new

developments and the optimi-sation of existing systems.

Our developmentengineers are unrivalledin their expertiseWorking with you as partners,Simrit engineers develop indivi-dual and economic solutionswhich are optimised in terms offunctionality.

Improve your chances inthe marketFor many types of constructionmachinery, new EU directiveshave been in place since early2002 which aim to reduce theexposure to noise and vibrationfor the driver. For you as amanufacturer of constructionmachinery, optimum design ofyour machines in terms ofvibration control is becomingmore important than ever before. Simrit offers you thesolution. If you use our brandedproducts, we can guaranteethat your construction machinerywill be both quiet and havelow vibration levels, thus in-creasing comfort levels in thedriver’s cabin.

As well as its wide range ofstandard products, Simrit is alsohappy to take on all sealingand vibration control servicesin our development centre.

For you and your company,working with Simrit means: ■ integrated individual solutions■ safer handling and noticeably

improved comfort for yourdrivers

■ shorter development times,reduction of time to market

■ extended service life andincreased service intervals for the entire system groups

■ reduced storage costs■ single sourcing means saving

on process costs.

You too can benefit from Simrit’srange of services in technology,innovation and service.

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Simmerring®

nents and are especially suita-ble for applications with super-imposed rotational and axialmovements. This is why theyare most often used for sealingprop shafts which are prone tolarge amounts of dirt. What sets both products apartis their excellent resistance toexternal dirt. They are also robust in construction, whichmeans they have a long servicelife, fit securely and require little maintenance.

In the field of sealing technology, Simrit is an undisputed market leader andpioneer. Our wide range of products coupled with our excellent materials exper-tise can solve almost any sealing problem in the construction machinery industry.

Simrit has 3500 different Simmerring precision seals inits standard range. Cassetteand combi seals and premiumpressure seals play an impor-tant role when it comes to usein construction machinery.

Simmerring - Cassetteand Combi SealsCassette seals consist of a Sim-merring and an inseparable in-tegrated wear sleeve. They areprimarily used for sealing driveshafts with no axial movement,such as in axles or power take-off shafts. Combi seals aremade of at least two compo-

Simmerring PremiumPressure SealsThis innovative Simmerring forpressure applications, such asin hydraulic drives, is particu-larly impressive in terms of itsthermal stability and its resi-stance to wear. The patenteddesign minimises the frictionand wear compared to conven-tional pressure seals. This means a considerable in-crease in service life. The PPS is made of the trusted 75 FKM595 material. Its dynamic pres-sure stability is max. 10 bar.

Simmerring® Cassette Seal

Simmerring® Combi Seal

Simmerring®

Premium Pressure Seal

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Simrit offers you hydro-pneu-matic spring and damping systems designed to meet yourindividual requirements by ourengineers in consultation withyou the manufacturer.

Spring system for thefront loading bucket hydro-accumulator systemIntegral Accumulator hydro-accumulator units with integra-ted control blocks reduce

Integral Accumulator

Accumulators or hydro-accumulators – originally developed as energy accumulators – are now being further developed by Simrit in many forms. Today, they are used for applications way beyond their original purpose. In construction machinery, state-of-the-art hydro-accumulators are used in conjunction with control blocks in spring systems for the front bucket.

Integral Accumulator

hydro-accumulator unit

with integrated control

block

Energy accumulation for control oil circuit forIntegral Accumulator stan-dard hydro-accumulatorA relatively constant pressure is required to supply the oil toproportional pilot valves. In order to help compensate forpressure fluctuations caused by switching the pump on andoff or by a change of load,membrane accumulators areused as energy accumulators.They guarantee constant, no-interruption supply of pres-sure oil, even inemergencies.

vibration and shocks caused by vertical acceleration of themass in the bucket. This signi-ficantly improves driver com-fort. At the same time, it ena-bles reduced mechanical wearand increased transport perfor-mance. It is especially whenthey are used for a combinationof loading and transport thatconstruction machines can benefit from a spring system onthe front bucket, because thespring system can be switchedon and off as a function of thedriving speed and load status.

All the hydraulic functions areintegrated into the controlblock. Its compact constructionmeans it can easily be integra-ted into any machine.

Vibration Control

larly flexible in construction and are primarily used for themounting of driver cabins. This means Simrit hydro-bushescan both damp low-frequencyvibrations and isolate high-frequency excitation.

Engine mounting withcone mountsCone mountings are primarilyused for mounting engines andcomponents. The elastic con-nection elements damp verticalvibrations and isolate structure-borne noise. At the same time,they can absorb large horizon-tal forces.

Simrit has been solving vibra-tion control problems success-fully for many years. As well as a wide range of standard products we are also able to provide exact solutions to individual problems thanks to the know-how of our many specialists.

Cabin mounting hydro-bushesHydro-bushes are elastomersprings with integrated hydrau-lic damping. They are particu-

Road roller drive bearings using circularmountsCircular mounts or buffersdamp and isolate vibrations.They act as shock absorbersand transfer forces. At the same time, they compen-sate for tension or productiondeviations between connectedcomponents. Circular mountsfrom Simrit have a unique rubber contour. This reducesrubber strain levels which increases the service life of thecomponent.

Our aim is to minimise noise and vibration in construction machinery in order tosignificantly improve drive comfort. This is guaranteed by quality, tested Simritcomponents based on many years of technical experience.

Road roller drive

bearing

circular mounts

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Merkel sealing systemsThe requirements and environ-mental specifications of sealingsystems are constantly increa-sing. Simrit constantly tacklesthis problem during its researchand development work, and theresult is high-performance, ex-cellent quality sealing systems.

Because they are so robust,Merkel sealing systems are eco-nomic components which areextremely reliable in their func-tion. This is also the case forthe extreme operating conditi-ons in which construction ma-chines often work, such as pres-sure peaks, high levels of dirt,large fluctuations in tempera-ture and irregular duty cyclesand maintenance. And it goeswithout saying that our productsare easy to control and adjust.

Merkel Hydraulics

Seals and sealing systems for hydraulic components are crucially important to the functionality and reliability of the system as a whole. Merkel hydraulic components from Simrit are therefore specially tailored to meet the demands ofthe construction machinery industry.

This means they can be used fora wide range of applications.They range from light applica-tions (forklift, HGV loadingcrane) to heavy duty machinery(heavy earth-moving machinery,diggers, bulldozers). Simrit offers completely friction-opti-mised and stick-slip free Merkelsealing systems for a widerange of hydraulic cylinders inconstruction machinery. Merkelsealing systems guarantee excellent sealing, extreme reli-ability and a long service life.

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Merkel sealing

systems

Vibration Control

Special Sealing Products: Bellows, Diaphragms,Elastomer Composite Parts and Precision Mouldings

O-Rings and Static Seals

Meillor Flat and Frame Seals

Integral Accumulator

Merkel Hydraulics / Pneumatics / Packings

Simmerring®

30 G

B 01

3 2.

5 02

03 D

&S.

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Industry Sector Information Construction Machinery

Simrit®, Your Global Technology Specialist for Seals and Vibration Control

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Simrit Services Your Benefits

Longer unit service life

Competitive advantages, efficiency and lower costs

All from one source

Technological edgeConstant innovations

Uniquely wide range of products

Unique materials expertise

A wide range of value added services

Integrated individual solutions

Noticeably improved comfort for your machines

Shorter development times

Your Benefits

Ground breaking solutions for the construction machinery industry

Headquarter Germany:Freudenberg Simrit KGD-69465 Weinheim, Germany

Phone +49 (0) 18 05 - S im r i tPhone +49 (0) 18 05 - 74 6748Fax +49 (0) 18 03 - 74 6748e-mail: info@simrit.dewww.simrit.comA company of

Freudenberg seals and vibration control