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Bore diameter d 431.8 mm
Outside diameter D 571.5 mm
Total bearing width over outer rings T 336.55 mm
Total bearing width over inner rings B 412.75 mm
Abutment diameter shaft d1 ≈ 454.03 mm
Abutment diameter housing D1 ≈ mm
Inner ring radius (chamfer) r1,2 min. 1.5 mm
Outer ring radius (chamfer) r3,4 min. 6.4 mm

Calculation data
Basic dynamic load rating C 5800 kN
Basic static load rating Co 13500 kN
Fatigue load limit Pu 1260 kN
Calculation factor

Mass: 245 Kg ROLLING MILL FAG(schaeffler)

Four-row tapered roller bearing Z-548232.TR4 (431.8,x571.5x412.75/336.55mm) is a popular bearing for rolling mill plant. FV is a well-known manufacturer of rolling mill bearings . For more technical details and bearing quotation, please contact our sales manager.

FV brand Four-row tapered roller bearings


Four-row tapered roller bearings comprise solid bearing rings and tapered roller and cage assemblies. They are suitable for axial loads in both directions and high radial loads.

The bearings described here are separable. The complete bearing must be mounted in the chock, after which the chock together with the bearing is slid onto the journal. This requires a loose fit for the inner ring on the journal.

For high speeds and loads, however, the inner ring must have a tight fit. This can be achieved by mounting bearings with a tapered bore on tapered roll journals.

Four-row tapered roller bearings are normally supplied with spacer rings between the outer rings while, in a few cases, they do not have intermediate rings.

Four-row tapered roller bearings are used, for example, in bearing arrangements for work rolls (bearings with sheet metal cage) or back-up rolls (bearings with pin cage). In addition to open bearings, sealed designs are also available. They are used to reduce the grease consumption in work roll bearings.

Four-row tapered roller bearings have non-standardised metric or inch dimensions and designations Z-5..TR4 or F-8..TR4.

Design variants are indicated by the Technical Specification H122**. 

Radial and axial load capacity 

Four-row tapered roller bearings can support axial forces in both directions as well as high radial forces. Where there are particularly high demands on axial guidance, an additional axial bearing is used in some cases.

TQO Bearings with extended inner rings 

■ The outer ring comprises a double ring and two single rings. 

■ The inner ring bore is smooth. 

■ The bearings have sheet metal cages. 

■ The lateral extended sections of the inner ring are ground and designed as sliding surfaces for rotary shaft seals. 

Tolerances and clearances: ISO standard, Perfect interchange

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