Valve Guides

Other Products
  • The valve guide has the task to absorb the transverse forces which affect the valve stem.
  • The valve guide centers the valve on the valve seat insert and conducts a proportion of the heat from the valve head, via the valve stem to the cylinder head.
  • Due to this extreme strain, for the valve guides mainly the material and its properties are a decisive factor for the product quality.

Valve Guides Specifications

Product Specifications

Dimension Range (in mm)
Inner Dia. 5.00 TO 28.00 MM
Outer Dia. 8.00 TO 30.00 MM
Total Length 25.00 TO 300.00 MM

Production Capacity

30000 pieces per month

*Believe in Quality not Quantity

Materials

Valve guides are made of materials with good gliding and thermal conductivity properties. Grey cast iron and brass materials with selected alloy components have been particularly proven.

Standard Values for the Clearance between Valve Guide & Valve Steam

Stem Diameter Clearance: Intake Value Clearance: Exhaust Value
6 to 7 mm 10 - 40 μm 25 - 55 μm
8 to 9 mm 20 - 50 μm 35 - 65 μm
10 to 12 mm 40 - 70 μm 55 - 85 μm

CHEMICAL COMPOSITION

GRAY CAST IRON (GRADE: GG-25)
Material C Si Mn Cr Cu Sn S P Fe HARDNESS
Per (%) 3.0 to 3.90% 2.0 to 2.90 % 0.60 to 0.70 % 0.30 %Max Max 0.50% 0.10% 0.15%Max 0.40 to 0.70 % Balance 190-240BHN
BRASS VALVE GUIDES
Materials Cu Pb(Led) Sn(Tin) Fe(Iron) Cu Al Ni Mn Total impurities
Per (%) 56.0 to 58.0% 2.0 to 3.4% TR 0.35 %Max Max 0.50% TR TR TR 0.70 %
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Registerd Office

209, Gokul Dham Society,
Krishna Nagar Main Road,
Rajkot-360 004. (Gujarat) INDIA.

Factory

Plot No. 16, Ankit Industrial Estate,
Nr. Rolex Bearings, NH 27,
Rajkot - 360 002, Gujarat, India

Contact

Mo: +91 98246 03676
Email: info@ominternationals.com

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