NTN Deep Groove Ball Bearings, Single Row Radial Ball Bearings, 16024 Series_43^2200 1 101 256 282 4300 000 g Specification values 1 101 256 282 4300 3600 4300 4 Continue grinding with water until you see some peels form on the back of the edge Types and codes N Shielded type Shielded type Non contact type ZZ Non contact type LLB Contact type LLU Low torque type LLH Construction Metal shield plate is affixed to the outside ring Torque Small Small Higher Medium Dust proofing Good Better than ZZ type Excellent Much better than LLB type Water proofing Poor Poor Very good Good High speed capacity Same as open type Same as open type Limited by contact seals Much better than LLU type Allowable temp