Product Name: Spherical Roller Bearings Features: 1) Series: 21300 series, 22200 series, 22300 series, 23100 series, 23200series, 24000 series, 24100 series and 23900 series 2) Material of rings and rollers: Chrome steel; GCr15 and GCr15SiMn, carbon steel, stainless steel 3) Material of cages: Brass, steel and nylon 4) Precision: P0, P6 5) Suffixes: A) CA: Integral brass cage, double row symmetrical rollers, inner ring ride B) MA: Integral brass cage, double row symmetrical rollers, outer ring ride C) MB: Two piece brass cage, double row asymmetrical rollers, inner ring ride D) CC: Two piece steel cage, double row symmetrical rollers, inner ring ride E) CTN1: Double row symmetrical rollers, nylon cage F) K: Tapered bore bearing, the taper is 1: 12 G) K30: Tapered bore bearing, the taper is 1: 30 H) W33: With lubrication groove in outer ring, with three oil holes I) C2/C3/C4: Internal clearance series: C2, C0, C3, and C4