... and bar mill, and roll neck of narrow strip mill to pay a role of thrust. One this kind of bearing ... two angular contact ball bearings matched pair in fact to face or back to back Types: two typical types, QJ000(176000), which ... outer rings and contact angles of 35 degrees ID from 100 to 560mm Main model: QJ220, QJ324, QJ330M, QJF240, QJ1280 Quality standard ...