rrindustries1899@gmail.com |
+91-7048825750, +91-9106636119
Business Type : Manufacturer, Exporter
Product Details
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
Production Capacity
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 |