stainless steel pillow block insert bearings:1)insert bearing and pillow block bearings: stainless steel insert bearing with stainless steel housing, pressed steel housing or plastic housing and zinc alloy housing etc.2)bearings:SUC, SSA, SSB, SSER, SHC, SSC, SS CSA, SS CSB /3)housings:SP, SF, SFL, SFB, ST, SFC, SPA, SPH, SHA, SFA 200 series 4)material: Housings in SUS 304 Inserts: Rings & balls in AISI 440c. cage: SUS 304 Set-screw: SUS 304 Grease nipple: SUS 304