1640-ZZ 1640-2Z 1640DS BR7740 3040DS for SpinCo Shielded Radial Ball Bearing 7/8 ID X 2 OD X 9/16 Wide Being designed with close tolerance and improved ball Bearings in the 1600 category were introduced to be interchangeable with other standard inch series bearings. Being designed with close tolerance and improved ball complement provide increased load capacity for this category of bearing. This bearing comes pre-lubricated with grease and is available with metal shields For a precise fit and wise selection. Please confirm your model above before ordering. Double-check dimensions and photos for the right fit. Quality assurance ：Well-designed, excellent processing. Made of highly durable materials, rigorously This is a manufacturer substitution. Functional equivalent to prior parts.Product Description Well-designed, excellent processing.tested, compact & sturdy, longevous. Ultra Durable, Quality Replacement.Made from durable high quality material and well-tested by the manufacturermade from durable high quality material and well-tested by the manufacture