Tapered roller Bearings
Taper roller bearings have tapered cone and cup between which taper rollers are arranged. The extension lines of them intersect at one point of shaft axis; therefore pure rolling on the raceway can be achieved.
Taper roller bearings are separable. Bearing cone (including roller cage and inner ring) and cup (outer ring) can be separated therefore it can be easily assembled on the bearing journal and bearing block.
Taper roller bearings are able to accommodate radial loads unidirectional axial loads and combined loads of radial and axial. The axial load carrying capacity of taper roller bearings is largely determined by the contact angle α which corresponds to the raceway angle of the cup the larger α the higher the axial load carrying capacity.
Generally taper roller bearings does not allow any angle error but the surface of roller and raceway can allow 2′~4′angle error after a special design.
Taper roller bearings have single-row double-row and four-row types. LYC manufactures both metric and inch size taper roller bearings.
Single-Row Tapered Roller Bearings
Single row taper roller bearing can bear a unidirectional axial load and limit the unidirectional axial relative displacement between shaft and housing. Even under pure radial load annex axial component of forces can be made in the internal part of taper roller bearings. Then another equal counterforce is needed to counteract it. Usually two single-row taper roller bearings with a same structure are assembled face to face or back to back. See Fig1.
Single Row Taper Roller Bearings
Assembled in Pairs
Single-row taper roller bearings can be assembled in pairs. There are face-to-face and back-to-back arrangements. Please see Fig2.
Taper Roller Bearing with Snap Rib
The outer ring of taper roller bearing is with snap rib as the following Fig 3. The internal parts of this type of bearings are arranged the same with the internal parts of single row taper roller bearings. Taper roller bearings with snap ribs can be located in axial on shaft block which can help to simplify the allocation design and the structure of shaft block.
Double-Row Taper Roller Bearings
Double-row taper roller bearings can carry radial loads and double-direction axial loads. The clearance of double-row taper roller bearings had been adjusted properly before delivery. They can be mounted and used directly without adjusting again. Double-row taper roller bearings can limit the displacement in both directions of shaft to housing in the range of axial clearance.
Double-row taper roller bearings can be arranged back to back and face to face. See Fig4.
The performance of four-row taper roller bearings is almost the same with double-row taper roller bearings and it can carry much more radial loads than double-row taper roller bearings. However the limiting speed of four-row taper roller bearing is comparably lower. They are mainly used by heavy engine machines such as rolling mill.
Cages
Cages of taper roller bearings are pressed steel cages machined solid cages glass fiber reinforced polyamide 66 cages and etc. For taper roller bearings with comparable big size and solid cages can be welded with steel stanchions.
