CementKiln Drive & Mechanical
Mill trunnion casting (feed / discharge trunnion, ball mill)
Critical safety casting – supports mill shell. Journal machined to H7/k6 for white metal bearing. Weld repair: pre-qualified WPS only. FMEA / safety case required for first article.
Specifications
Material
Cast Steel ASTM A216 WCB / A148 Gr80-50
Grades
WCB
Material Class
Cast Steel
Applicable Standards
ASTM A216
Common Processes
Resin sand / furan no-bake (large hollow trunnion sections); heat treat
NDT & Inspection
UT (full volume – critical safety component); MT; dimensional (bore, flange face, journal OD); hardness; VT
Typical Specs & Notes
Critical safety casting – supports mill shell. Journal machined to H7/k6 for white metal bearing. Weld repair: pre-qualified WPS only. FMEA / safety case required for first article.
⚠ Caveats
Critical safety casting – supports mill shell.