• NA210-31 | NA21031• Inner dimension: 49,213, Outer dimension: 90, Width: 62,7, Weight: 1,04, Outer ring: Spherical, Fixing: Eccentric locking collar, Bore: Cylindrical bore, Inner ring: Widened inner ring on both sides, Lubrication: Groove with lubrication hole(s), Seal: Multiple seal, Material: Standard bearing steel