Product characteristics and classification of tapered roller bearings

Source: China Bearing Network Time: 2018-03-30

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â˜… Product features Tapered roller bearings have tapered raceways on the inner and outer rings; tapered rollers are placed between the raceways. If the tapered faces are extended, the ends are concentrated on the bearing axis. Tapered roller bearings are used first. Accepting the radial direction mainly due to radial load; axial combined load. The axial bearing capacity of the bearing is determined by the contact angle. The larger the antenna angle, the larger the axial bearing capacity. The tapered roller bearing is a separate bearing, and the inner ring with the roller and the cage constitutes an inner component, which can separate the device from the outer ring. The bearing can constrain the axial displacement of one side of the shaft or the casing; the shaft is not allowed to be skewed relative to the casing hole. Under the radial load; additional axial force occurs; thus; usually in the bearing two bearings; outside the bearing The ring and the inner ring should be opposite to each other.
The primary use of this type of bearing: automobile front wheel, rear wheel, transmission, differential, pinion shaft; machine tool spindle; construction machinery; large-scale agricultural machinery; railway vehicle gear reduction equipment; rolling mill roller neck small reduction equipment.
â— Product classification ZWZ produces metric, inch, single, double and four-row tapered roller bearing layout type single row tapered roller bearings. This type of bearing can only restrain the axial displacement of the shaft or the casing in one direction; accept the axial load in one direction Under the action of radial load; the axial force occurring in the bearing must also be balanced. The two bearings should be used face to face or back to back.
Double row tapered roller bearings This type of tapered bearing can accept a bidirectional axial load together with a radial load. The two-way axial movement of the shaft or housing can be constrained within the axial clearance of the bearing.
Four-row tapered roller bearings The function of this type of bearing is the same as that of a double-row tapered roller bearing; however, it has a larger radial load than a double-row tapered roller bearing; the limit speed is slightly lower; it is primarily used for heavy machinery; Machine and so on.
Multi-sealed double and four-row tapered roller bearings ZWZ supply long life, multi-sealed double and four-row tapered roller bearings. Personalized new depiction of bearings; modified traditional description of fully sealed bearings; combined with sealing and dustproof New type of seal layout; improved sealing function; improved sealing function. Multi-sealed double- and four-row tapered roller bearings are compared with open-type bearing; life expectancy is increased by 20% to 40%, and lubricant consumption is reduced by 80%.
Multi-sealed bearings are marked with the rear code XRS.
â– Scale scale The basic dimensions of ZWZ tapered roller bearings are listed in the scale data sheet;
Single row tapered roller bearings:
Inner diameter scale: 20mm ~ 1270mm
Outer diameter scale: 40mm ~ 1465mm
Width scale: 15mm ~ 240 mm
Double row tapered roller bearings:
Inner diameter scale: 38mm ~ 1560mm
Outer diameter scale: 70mm ~ 1800mm
Width scale: 50mm ~ 460 mm
Four row tapered roller bearings:
Inner diameter scale: 130mm ~ 1600mm
Outer diameter scale: 200mm~2000mm
Width scale: 150mm ~ 1150 mm
â—† The public service ZWZ metric tapered roller bearing has the usual level of public service; it also supplies P6X, P6, P5, P4, P2 class public service products; all in line with GB307.
ZWZ inch tapered roller bearings have the usual level of public service; can also supply CL2, CL3, CL0, CL00 level public service products as needed.
â–² Radial clearance ZWZ single row tapered roller bearings have clearance only after the equipment; and can be determined after another bearing in the opposite direction is adjusted.
â˜… Cage tapered roller bearings are usually selected from steel stamping; basket-shaped cages; but when the scale is large;
1. When the outer diameter of the bearing D â‰¤ 650mm; the steel plate stamping cage is selected; the rear bearing code of the cage is not marked 2. When the outer diameter of the bearing is D>650mm; the steel solid strut cage is selected; the rear post code of the cage is not marked â— The visual point error is allowed â– The equivalent dynamic load P=Fr KN] When Fa/Frâ‰¤e P=0. 4Fr + YFa [KN] When a single row tapered roller bearing is used in pairs when Fa/Fr>e (the basic shape scale can be different); when calculating the equivalent dynamic load of the bearing; it is necessary to account for the additional axial force caused by the radial load. The additional axial force S of a single row tapered roller bearing; can be approximated by the following formula: S = Fr/2Y
â˜… Equivalent static load single row tapered roller bearing 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/Frâ‰¤e P=0.67Fr +Y2Fa [KN] Equivalent static load P0=Fr +Y0Fa when Fa/Fr>e [ KN]
Both Fr and Fa refer to the total load acting on a single row; double row and four row bearings.

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