Structure:deep groove Type:ball Bore size:3 - 130 mm Outside diameter:8 - 180 mm Model number:6900-6926 Precision rating:p0, p6, p5, p4(abec-3, abec-5, abec-7) Seals type:rs, 2rs, zz, open Number of row:single row Place of origin:china (mainland) Material:gcr15, 52100 Cage:steel, brass, nylon Noise level:z2, z3, z4 Vibration level:v2, v3, v4 Grease:kyodo, shell, csltex, sinopec, customized grease Hardness:hrc61-65 Plastic tube/box/ctn/pallet; According to the customer's requirement.