... , V1, Z1, Z2 7) Internal clearance codes: C0, C2, C38) Material: GCr 15 , 8) Packing: industrial packing or individual box packing ... pump bearing ball-ball and ball-roller. With high-quality material and advanced technology, 1 The range of water pump bearing products: WB ... row of rollers; WIR, WN, WKH, 665000 series, etc. 2 Material of water pump bearing: Mainly the chrome Steel (GCr15) High ...