四列圆锥滚子轴承TQO

四列圆锥滚子轴承TQO型，此类型轴承基本上都应用于冶金行业的轧机设备，它可以承受很大的径向轧制力和和轴向轧辊止推能力。保持架主要分为冲压钢制保持架和支柱焊接式钢保持架。四列圆锥轧机轴承被广泛的安装在支承辊，中间辊和工作辊的两端。

The performance of the four-row tapered roller bearing is basically the same as that of the double-row tapered roller bearing, but the radial load is greater than that of the double-row tapered roller bearing, and the limit speed is slightly lower. It is mainly used for heavy machines, such as rolling mills.

Installation of four-row tapered roller bearings:
1. The fit between the inner ring of the four-row tapered roller bearing and the roll neck is generally with clearance. When installing, put the bearing into the bearing box first, and then put the bearing box into the journal.
The outer ring of the two- and four-row tapered roller bearing also adopts a dynamic fit with the bearing box hole. First, install the outer ring A into the bearing box. Characters are printed on the outer ring, inner ring, and inner and outer spacers when leaving the factory. The bearing box must be installed in the order of the characters and symbols during installation. Cannot be interchanged arbitrarily to prevent changes in bearing clearance.
3. After all the parts are installed in the bearing box, the inner ring, and the inner spacer, and the outer ring and the outer spacer are axially abutted.
4. Measure the gap width between the end face of the outer ring and the bearing box cover to determine the thickness of the corresponding gasket.

Four-row tapered roller bearings can accommodate combined (radial and axial) loads at low to moderate speeds.  TQO and TQI design are two main types of four row tapered roller bearings. TQOS is an upgrade design based on TQO. It is an advanced design with sealing system. They are used almost exclusively in roll neck applications such as rolling mills.

Four-row tapered roller bearings, TQO design