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Valve Guides
| Business Type | Manufacturer, Exporter |
| Inner Dia. | 5.00 TO 28.00 MM |
| Outer Dia. | 8.00 TO 30.00 MM |
| Total Length | 25.00 TO 300.00 MM |
Preferred Buyer From
| Location | Worldwide |
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.
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% | 0.001 | 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 | 0.007 | |
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