Item: SMR148ZZ Structure: Deep Groove Material: 440C Stainless Steel ( prefix "S" ) Bore Dia (d): 8 mm Outer Dia (D): 14 mm Width (B): 4 mm Closures: Metal Shielded(ZZ) Lubrication: Grease Magnetic: little Hardness: 58HRC Corrosion Resistance: General Clearance: C0 Grades: ABEC Grades 1 Dynamic Load Rating (Cr) (Newtons): 695 Static Load Rating (Cor) (Newtons): 309 Ball Qty: 10 Ball Dia (Dw): 1.588 mm Weight: 2.19 g Quantity: 1 Lot = 10 PCS