Piston Rings Komarov s.r.o. Hastings
Piston Rings Komarov
Piston Rings Komarov
Piston Rings Komarov
Piston Rings Komarov
Piston Rings Komarov
Piston Rings Komarov


Písní kroužky - výrobní program Buzuluk

Piston Rings Komarov s.r.o. foundry production program focuses mainly on small cast iron castings (up to 1kg) due to very productive semi-automatic production line. Given that this device mainly casts individual blank rings the manufacturing is specialized in the production of smaller castings in larger series. With high productivity and fine surface quality (fine foundry sand) are our castings very popular and highly competitive. The surface quality can be increased by surface treatments, chemical plating (e. g. zinc).


The individual melts are separated in the process and we can provide our customers with the attest of tests for each melt.


Because of the long tradition in foundry industry (over 555 years), we are able to develop own kinds of cast iron. This allows us to optimize the properties of the material according to customer requirements.



  • semi-products for the final machining
  • inlet and exhaust valve seat castings for gasoline and diesel engines
  • semi-produced valve guides
  • rocker arms of pin stands for gasoline and diesel engines
  • pulleys for belting of engines
  • car water pump propellers
  • hose couplings (compressed air, hydraulic)
  • rope cramps
  • clamps for crating
  • couplings el. and other rails, pipes (railway, building industry,..)
  • Automotive door hinges
  • Balance weight (anti-vibration use for engines, gearboxes)
  • Castings for mining systems
  • others


  • The Engineering industry
  • Automotive industry
  • Farming, Agricultural industry
  • Mining industry
  • Railway industry
  • Hydraulic systems
  • Road industry
  • Construction industry


The technology used is the casting into high-pressure-formed sand moulds, stocked into columns.


Moulding technologies: ➜ GOETZE: semi-automatic, castings up to 1,0 kg ➜ BERGER: moulding machines - castings up to 1,5 kg


Core production: technology used - Croning


Melting: is done in 1 and 2 ton inductive melting furnaces. The process of melting is controlled by computer, which analyses the results of quantometrical analysis and gives instructions directly to the furnace platform for processing of melted metal.


Traceability: The foundry is connected with a metallographical, mechanical, sand and chemical laboratories, which follows the foundry operation. The individual melts are separated in the process and we can provide our customers with the attest of tests for each melt.


Piston Rings Komarov s.r.o. use in its production process the system of metal patterns installed onto the pattern plate. Production of the pattern equipment, assembly on to the pattern plate including the gating system is done by Piston Rings Komarov in its premises. When agreed with customer, delivered pattern equipment can be used in certain cases. Other forming technologies are not used in Piston Rings Komarov s.r.o.


Forming machine



Casting weight

up to 1Kg

up to 1,5Kg

Casting dimensions

up to 300mm, height 2x25mm

up to 350mm, height 2x35mm

Surface roughness

Ra 16-25, Rz 63-100

Ra 16-25, Rz 63-100


Grey cast iron - Alloyed cast iron - Ductile cast iron - Steel

Cast iron castings of different material modifications in accordance with valid Czech and foreign Standards and according to the Customers' requests.

The initial materials in the area of special castings and also piston rings are in accordance with the CS Standard ISO 6621-3, classes 10,20 and 50,60.



Piston Rings Komarov s.r.o.:

Buzulucká 108
267 62 Komárov

ph: +420 311 575 111
e-mail: info-ZAVINOVADLO:komapistonrings.cz

IČO: 06143814
VAT: CZ06143814
DUNS: 495876171

Jan Mandlík

Hastings – Sales Manager EU
e-mail: jmandlik-ZAVINOVADLO:hastingsmfg.com

sales & logistic

ph: +420 311 575 345
ph: +420 311 575 544
e-mail: sales.ko-ZAVINOVADLO:komapistonrings.cz

piston rings SHOP

opening time: weekdays 6am - 2pm
ph: +420 311 575 433
ph: +420 731 515 259
e-mail: prodejnapk-ZAVINOVADLO:komapistonrings.cz

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