Energy & PowerSteam Turbine
Turbine bearing housing (journal & thrust bearing pedestals)
Oil film journal bearing – surface finish Ra <1.6µm on bores. Alignment bores: H7/H6 tolerance.
Specifications
Material
Cast steel A216 WCB; Grey Cast Iron GJL-250 (lower speed auxiliaries)
Grades
WCB;GJL-250
Material Class
Gray IronCast Steel
Common Processes
Green sand / resin sand; machining critical on bearing bores
NDT & Inspection
MT/PT; dimensional (bore concentricity, alignment bores CMM); VT
Typical Specs & Notes
Oil film journal bearing – surface finish Ra <1.6µm on bores. Alignment bores: H7/H6 tolerance.