Item NO:SBFCT201~SBFCT207, SAFCT201~SAFCT207SBFCT/SAFCT Light duty,DUCTILE iron housing,Setscrew/Eccentric lockingHousing: QT450 ductile iron Zerk fittings: Zinc plated A3 steel. Insert bearing: Gcr15(AISI52100) steel,heat treated,precision ground,raceway superfinished. Steel ball:G10 only. Retainer: Low noise refined cage. Lubricant: Low noise,high speed/load SHELL GADUS S2 V220 2 only. Outer ring with grease groove and holesat same side of setscrew (setscrew port annealed ) / eccentric locking collarPhone: +86-592-580 8851 / +86-592-580 7618Email: sales@ldk-bearing.com ;benjamin@ldk-bearings.com