SKF Bearing 31328 X/DF

DF: Set of two matched bearings arranged face-to-face ><
d=140.0mm, D=300.0mm, Mass bearing=49.1kg
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of SKF Bearing 31328 X/DF

SKF Bearing 31328 X/DF

Dimensions

d 140.0mm Bore diameter
D 300.0mm Outside diameter
T 154.0mm Total width
2B 140.0mm Width of inner rings
b 20.0mm Width of lubrication groove
K 15.0mm Diameter of lubrication hole
r3,4 4.0mm Chamfer dimension
r5 1.5mm Chamfer dimension
SKF Bearing 31328 X/DF

Abutment dimensions

da 169.0mm Diameter of shaft abutment
Da 235.0mm Diameter of housing abutment
Da 284.0mm Diameter of housing abutment
Ca 9.0mm Minimum width of space required in housing on large side face
ra 5.0mm Radius of fillet
rc 1.5mm Radius of fillet

Calculation data

Basic dynamic load rating C 1264.0kN
Basic static load rating C0 1800.0kN
Fatigue load limit Pu 180.0kN
Reference speed 1200.0r/min
Limiting speed 2200.0r/min
Limiting value e 0.83
Axial load factor Y1 0.81
Axial load factor Y2 1.2
Axial load factor Y0 0.8

Mass

Mass 49.1kg

Product description of SKF Bearing 31328 X/DF

SKF Bearing 31328 X/DF, Matched Face to Face Single row tapered roller bearings.
The SKF assortment of matched single row tapered roller bearings is based on popular sizes of single row tapered roller bearings. Depending on the application requirements, matched tapered roller bearings are available in different designs and variants:
Matched bearings arranged face-to-face
Matched bearings arranged back-to-back
Matched bearings arranged in tandem
Basic design and SKF Explorer bearings
The matched bearings listed in the product tables constitute the basic SKF assortment. SKF can supply other matched bearings on request.
SKF Bearing 31328 X/DF, Matched bearings arranged face-to-face have load lines that converge toward the bearing axis. can accommodate a limited amount of misalignment can accommodate axial loads in both directions are supplied with an intermediate outer ring spacer as a set.
The utility model relates to the technical field of a bearing, in particular to a single-row tapered roller bearing SKF Bearing 31328 X/DF, used for an automotive front wheel hub. The single-row tapered roller bearing comprises a bearing outer ring, a tapered roller and a bearing inner ring; the roller is arranged between the bearing outer ring and the bearing inner ring; both the bearing outer ring and the bearing inner ring are provided with annular rolling paths; and the rolling path on the bearing inner ring is provided with two circular arc grooves. The single-row tapered roller bearing is simply structured; the outer ring and the inner ring can be respectively mounted and can be used for supporting a unifying function of an axial load and a radial load simultaneously.
Aimed at deficiencies of traditional single row tapered roller bearing,a new structure is designed. The small rib of inner ring is can-celled,and the structure of cage is changed. The self locking between cage and inner ring is realized,and the unity of inner assembly consisting of inner,roller and cage is ensured. The processing method is discussed for new type tapered roller bearing. The new type tapered roller bearing is characterized with simple structure,convenient production and assembly. The length of roller is increased and the load carrying capacity of bearing is improved under unchanged installation dimensions.
SKF single row tapered roller bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads. The projection lines of the raceways meet at a common point on the bearing axis (apex point A) to provide a true rolling action and therefore low frictional moments during operation. The axial load carrying capacity of tapered roller bearings SKF Bearing 31328 X/DF, increases with increasing contact angle α. The size of the contact angle, which is usually between 10° and 30°, is related to the calculation factor e (from the product table): the larger the value of e, the larger the contact angle.
have a design and internal geometry that provide long service life have crowned raceway profiles and an optimized surface finish of the inner ring guide flange that enables them to run cooler and consume less lubricant than conventional design bearings have load rating values that are in accordance with ISO and even above (product table) offer a cost-effective solution for standard industrial applications On request, SKF can also supply any inner ring with roller and cage assembly (cone) or any outer ring (cup) separately.

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