The tapered roller bearing belongs to the separated type bearing, and both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types based on the number of rows of installed rollers, such as single row, double row, and four row tapered roller bearings. Conical roller bearings are mainly used to withstand combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, it has a larger load-bearing capacity and lower limit speed. Conical roller bearings can withstand axial loads in one direction and limit axial displacement of the shaft or casing in one direction.

Size range

The basic dimensions of ZWZ tapered roller bearings are listed in the dimension data table,

Single row tapered roller bearings:

Inner diameter size range: 20mm~1270mm

Outer diameter size range: 40mm~1465mm

Width size range: 15mm~240mm

Double row tapered roller bearings:

Inner diameter size range: 38mm~1560mm

Outer diameter size range: 70mm~1800mm

Width size range: 50mm~460mm

Four row tapered roller bearings:

Inner diameter size range: 130mm~1600mm

Outer diameter size range: 200mm~2000mm

Width size range: 150mm~1150mm

tolerance

ZWZ metric tapered roller bearings have ordinary level tolerances and also offer products with P6X, P6, P5, P4, and P2 level tolerances, all in compliance with GB307.1.

ZWZ British tapered roller bearings have ordinary level tolerances, and CL2, CL3, CL0, and CL00 level tolerance products can also be provided as needed.

Radial clearance

The ZWZ single row tapered roller bearing only has clearance after installation and can only be determined after adjustment with another bearing positioned in the opposite direction.

Holder

Conical roller bearings are generally made of steel plate stamping and basket shaped retainers, but when the size is large, solid pillar retainers made of cars are also used.

When the outer diameter D of the bearing is ≤ 650mm, steel plate stamped cages are used, and the codes behind the cages are not marked

2. When the outer diameter D of the bearing is greater than 650mm, a steel solid support cage is used, and the code behind the cage is not marked

Allowable error

equivalent dynamic load

When Fa/Fr ≤ e, P=Fr KN

P=0.4Fr+YFa [KN] when Fa/Fr>e

When single row tapered roller bearings are used in pairs (basic dimensions may vary), the additional axial force caused by radial load must be taken into account when calculating the equivalent dynamic load of the bearing. The additional axial force S of a single row tapered roller bearing can be approximately calculated using the following formula: S=Fr/2Y

Equivalent static load

Single row tapered roller bearings

P0=0.5Fr+Y0Fa KN]

If P0<Fr, take P0=Fr

Double row and four row tapered roller bearings

P=0Fr+Y1Fa [KN] When Fa/Fr ≤ e

P=0.67Fr+Y2Fa [KN] when Fa/Fr>e

Suffix definition

A: Internal structural changes

B: Increased contact angle

X: The external dimensions adopt international standards

CD: Double outer ring with oil hole or oil groove.

TD: Double inner ring with tapered hole.