What’s the characteristics of TDO dual tapered roller bearings?

The outer ring (or inner ring) of dual tapered roller bearings is a whole. The small end faces of the two inner rings (or outer rings) are similar, and there is a spacer in the middle. The clearance is adjusted by the thickness of the spacer, and the pre-interference of the double row tapered roller bearing can also be adjusted by the thickness of the spacer.
Dual tapered roller bearings are mainly used to bear radial and axial joint loads mainly radial loads. It can limit the axial displacement of the shaft (or shell) in two directions, so it can be used as a bidirectional axial positioning bearing. 

The structure and performance characteristics of dual tapered roller bearings:
The structure of dual tapered roller bearings is various, the largest one is type 35000, which has a double raceway outer ring and two inner rings, and a spacer between the two inner rings, the clearance can be adjusted by changing the thickness of the spacer. This type of bearing can bear bidirectional axial load while bearing radial load, and can limit the axial displacement of the shaft and housing within the axial clearance range of the bearing.

The performance of outward-facing dual tapered roller bearings (TDO type) is similar to that of two single-row tapered roller bearings installed back to back, but the number of parts of double-row tapered roller bearings is small, the installation and removal are easier, and its rigidity is very good , so it is mostly used in occasions that bear alternating loads, such as reducers, coilers, etc. 

The performance of the inward type dual tapered roller bearings (TDI type) is similar to that of two single row tapered roller bearings installed face to face, and compared with the outward type double row tapered roller bearings (TDO type), it has a smaller installation space, but The rigidity is slightly poor, and it is mostly used as a positioning end bearing that bears a medium load, such as a roll bearing positioning end, a reducer, etc.

Outward-facing dual tapered roller bearings (TDO type) have a spacer between the two inner rings, and inward-facing double-row tapered roller bearings (TDI type) have a spacer between the two outer rings. The bearing can be adjusted by changing the thickness of the spacer Radial and axial clearance.