Üstün İş continues its leadership in automotive sector with
its modern and trustworthy firm.
Üstün İş, which has been exporting its line of products of engine
cylinder liners of every diameter and kind primarily to European Union
and most other countries in the world, is distinqished with meticulous
attention to detail in every acpect pf its production process. Üstün
İş carries out its production in all its facilities equipped with the
latest techonology under meticulous and strict controls to attain maximum
quality, and this has lead Üstün İş to its present position of leadership
in the sector. With its 45 years of experience behind it looks ahead
to the future with confidence.
Üstün İş was founded by Mr. Rafet Özusta in 1960. Since the time of
its establishment , Üstün İş Inc. Co. has become a reliable powerful
manufacturer both in domestic and international markets in the field
of various types of engine cylinder liner production for automotive
In these 45 years of experience Üstün İş has produced millions of engine
cylinder liners and this experience is reflected in the quality of its
products. Producing engine cylinder liners for every type of engine
ranging from agricultural waterpumps to tanks, from heavy-duty engines
to motorbikes, from cars to trailers, Üstün İş possesses very large
All production stages are controlled by experienced and talented people
in the laboratory making use of latest techonology.
Üstün İş has the TSEN 9001,2000 "Quality Administration System"
certificate and also ready for 16949 quality system needed for the automotive
Efforts spent for years to quarantee the highest quality have made
Üstün İş a powerful firm producing various types of engine cylender
Üstün İş, experts in engine cylinders liners The name is a guarantee...The
guarantee of Üstün İş....
Üstün İş quarantees maksimum quality control in all its products it
exports to most of the countries in the world. The raw materials are
analized in strict controls and melted in sampling induction furances
and tested with spectrometers.
Iron is melted and alloyed in the foundry by induction furnaces under
close laboratory control . Depending on size, shape and engine builder's
specifications, a wide range of alloying elements are used to meet different
Samples are taken to ensure the right amount of elements in cast blanks
with spectrometer before centrifugal casting proceeds. Only after the
desired level of quality is reached does the centrifugel casting process
begin. This quarantees the level of quality Üstün İş is famous for..
controls and micro and macro analyses of the material are carried out
in the laboratuary.
Üstün İş, following techonological advances in the sector, has moved
to the multi station caroser centrifugal casting machine system.
After centrifugal casting, liner blanks are moved to the factory plant
to start the turning processes on CNC's machines to customer specifications.
Again with the latest techonological machines the product's honning
begins... Honning and plateu honning are carried out in accordings with
The next step is grinding, which is done on CNC grinding machines to
obtain the desired surfaces and tolerances to meet the specifications
to obtain the desired surfaces. Honning, grinding and hardness tests
sre carried out using higly sensitive equipment.
Visiual controls, crack controls, casting faults controls, dimensional
controls and the hardeness controls are meticulously carried out once
more. Dimensional mesaruments are specifically comfirmed with profile
With its experinced personnel, discriminating and meticulous work,
Üstün İş has become the name for quality... And has proved its quality
in these 45 years with millions of engine cylinder liners it has produced.
Üstün İş will continue to export its products of discriminating and
Üstün İş, the name today for tomorrow's techonology.