Poljoprivredne gume

Popunjenost šare guma za pogonsku osovinu traktora je samo 20%. U slučaju traktora sa pogonom na sva 4 točka ne može se proizvoljno mijenjati dimenzija gume!

PR(ply rating) vrijednost.

Određuje dozvoljeni stepen opterećenosti poljoprivrednih guma. Što je vrijednost veća, to je guma otpornija na oštećenja izazvana spoljnim utjecajima.U slučaju eksploatacije u teškim uslovima preporučljivo je potražiti gumu sa što većom PR vrijednošću.

Struktura gume

Razlikujemo dve vrste strukture guma.

Dijagonalne gume su takva vrsta guma, gdje kordovi zatvaraju kut od 45 stepeni u odnosu na rub gume. Između gazećeg sloja i bočnice pneumatika nalaze se jastučasti ulošci koji su napravljeni od rjeđih vlakana, formirajući prijelaz između bočnice i gazećeg sloja.

Kod radijalnih pneumatika se ove dvije funkcije razdvajaju i optimizirana je konfiguracija vlakana na radijalne sile. U slučaju radijalnih pneumatika kordovi su vertikalni u odnosu na uzdužnu osu pneumatika pa samim tim trpe dva puta veća opterećenja u poređenju sa dijagonalnim pneumaticima. Kord radijalnih penumatika se sastoji od upola manjeg broja vlakana nego kod dijagonalnih što proističe iz pravca primjene. Zid pneumatika je tanji, što doprinosi bržem hlađenju pneumatika kao i većoj otpornosti uticaju centrifugalne sile nastale pri velikim brzinama. Zahvaljujući krućoj strukturi, bolje je prianjanje na kolovoz. Također je smanjena pokretljivost gazećeg sloja što smanjuje otpor pri rotaciji. Prilikom nailaska na kamen, nastaju veća opterećenja na rastezanje, što doprinosi razdvajanju ili cijepanju slojeva pneumatika; radijalni pneumatici brže propadaju na neravnom kolovozu (kaldrmi) nego dijagonalni pneumatici.

Oznaka strukture pneumatika. Oznaka R označava radijalni pneumatik. Ostale mogućnosti: ukoliko je oznaka samo srednja crta (-) ili slovo D, to označava dijagonalni pneumatik.

ABOUT COMPANY 

We will guarantee safety and comfort on your roads providing you with innovative tyres manufactured by Ukrainian professionals who use the latest world technology and equipment made in Europe.

Belaya Tserkov tyre factory, at present Private Joint Stock Company ROSAVA, has been operating since 1972.

For these years the company has manufactured more than 180 million tyres which run million miles on the roads of the world. The company has got a wealth of traditions, wide experience and knowledge necessary for production of high tech tyres. 

But it is necessary to keep up with the times and thus the company does not stop on the achieved success.

Today PJSC ROSAVA is the largest tyre manufacturer in Ukraine, one of the leading tyre companies in the CIS. 

It is high tech and socially responsible company which uses the latest standards and management principals.

Main activity of the company is manufacture of tyres under two trademarks «ROSAVA» and «VALSA». One of the strategic lines of its development is off-take projects (production of tyres for foreign customers from Germany, Turkey, Great Britain, Russia and others). 

Having the best in the CIS high tech mixing equipment, ROSAVA company produces as well commercial rubber compounds for other manufacturers. Within recent years production of rubber technical goods was mastered. 

PJSC ROSAVA is located in the south-east part of Belaya Tserkov city, 80 km far from Kiev. Convenient geographical location of the company, presence of railway and Kiev-Odessa highway ensure prompt delivery of tyres to customers in Ukraine and to foreign partners. 

PRODUCT

Wide range of tyres, more than 200 sizes, is manufactured for passenger cars, commercial vehicles, agricultural machinery.

Passenger car tyres are manufactured in economy segment with marks ВС and БЦ, and in medium segment with marks WQ - winter ,  SQ - summer.

Medium class tyres are exported to 36 countries of the world. In Ukraine they are widely used by owners of foreign-made cars of classes B and C. 

According to the results of 2012, about 50% of total volume of all tyre range is sold in domestic market, the rest tyres are exported to more than 60 countries of the world, to almost all continents.

PRODUCTION

Production modernization

In order to manufacture product which meet the growing requirements of customers, the company has carried out the first stage of the complex program for production modernization (years 2005-2010) including delivery of high tech equipment manufactured by the worldwide leaders, implementation of state of the art technology and use of environmentally friendly raw materials. The second stage started and is in progress (years 2011-2014).

2006 

Triplex extrusion line for treads/sidewalls production, Berstorff (Germany) provides a possibility to manufacture the tread consisted of 3 new types of rubber compounds as well as to produce medium class tyres.

2008

First line of curing presses, Harburg Freudenberger (Germany) ensures consistency of quality; its output capacity is 600 thousand tyres per year.

2010 

Stand-alone energy-saving plant Viessmann Vitomax (Germany)

- supports the workshops for truck and agricultural tyres production.

2011 

Second line of curing presses, Harburg Freudenberger (Germany), output capacity - 600 thousand tyres per year.

2012 

- Extrusion line for production of  innerliner for passenger car tyres and truck tyres, Krauss Maffei Berstorff (Germany); 

• Two machines for cap ply cutting,  Spoolex S.A.S (France); 
• Tread wind-up unit, Krauss Maffei Berstorff  (Germany);
• Two unistage tyre building machines (including I and II stages), Harburg Freudenberger (Germany).

Objectives into 2013-2014 

Purchase of necessary high-tech equipment. 

CERTIFICATION

ISO 9001:2008  from  QS Cert  

• Certificates on noise level conformity to the EC requirements from IGTT a.s. (Czech Republic) 
• Certificate on conformity of quality from INMETRO (Brazil)
• Technical results of independent testing from Cooper Tire &Rubber Company Europe Ltd (England)
• International Rules No. 30 EEC UN, No. 50 ЕEC UN, No. 54 ЕEC UN
• Certification system of Russian Federation, Belarus Republic 
• Certificate on conformity of quality (China)
• Certificate «UkrSEPRO» (Ukraine)

PARTNERSHIP

The Company is building its relations with customers, trade partners and automobile assembly plants on the basis of respect, mutual development and long-term cooperation. The success of the partners is the success of the company.

Our partners:

• Trade partners in Europe, CIS, far abroad and near abroad countries. 
• Dealer system in Ukraine 
• Trading houses "ROSAVA" (Kiev, Belaya Tserkov, Chernigov, Cherkassy, Kirovograd)
• Trading house "VALSA" (Moscow)

Automobile assembly plants:

• PJSC "AvtoKrAZ",  Corporation "UkrAVTO" (PJSC "ZAZ"),  Corporation "Bogdan", LLC KhTZ,
• PJSC "Chervona Zirka", PJSC "Umanfermash",  
• LLC "Kherson Machine-Building Plant"  - Ukraine; 
• LLC "Rostselmash", LLC "Bryansky Arsenal" - Russia;
• RUE "Gomselmash", OEM "Tekhmash", CJSC "Amkodor Pinsk" - Belarus 

AWARDS

High quality of product of Private JSC ROSAVA is proved by numerous domestic and international awards. The company has got more than 50 of them.

SOCIAL RESPONSIBILITY

Being the main provider of the city income, Private JSC ROSAVA pays a great attention to issues of social responsibility.

SOCIAL POLICY 

• recreation and health improvement of employees and their children
• voluntary health insurance
• prevention of work-related diseases,
• aid posts on the territory of the company

• children’s home «Voloshka»,
• regional infant home «Maliatko»,
• psychoneurological hostel.

We are always glad to meet you at our site, exhibitions as well as at our central office!

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