SKF Bearing 305263 DA

d=200.0mm, D=289.5mm, B=76.0mm, Mass bearing=16.4kg
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of SKF Bearing 305263 DA

SKF Bearing 305263 DA


d 200.0mm Bore diameter
D 289.5mm Outside diameter
B 76.0mm Width
d1 231.1mm Shoulder diameter inner ring for two-piece inner ring
D1 266.0mm Shoulder diameter outer ring
b 16.7mm Width annular lubrication groove at outer ring
K 7.5mm Diameter lubrication hole (outer ring)
r1,2 2.1mm Chamfer dimension inner ring for two-piece inner ring
a 191.0mm Distance pressure point(s)
SKF Bearing 305263 DA

Abutment dimensions

da 205.0mm Abutment diameter shaft
Da 264.0mm Abutment diameter housing
ra 2.1mm Fillet radius

Calculation data

Basic dynamic load rating C 302.0kN
Basic static load rating C0 475.0kN
Fatigue load limit Pu 12.9kN
Reference speed 1800.0r/min
Limiting speed 2200.0r/min
Calculation factor kr 0.095
Calculation factor e 0.86
Calculation factor X 0.62
Calculation factor Y0 0.63
Calculation factor Y1 0.73
Calculation factor Y2 1.17


Mass bearing 16.4kg

Product description of SKF Bearing 305263 DA

SKF Bearing 305263 DA, it belongs to SKF Bearing > Rolling bearings > Ball bearings > Angular contact ball bearings > double row, and we have related type you may also like SKF Bearing 305264 D.

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.

The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from one raceway to another, and a line perpendicular to the bearing axis.

SKF Bearing 305263 DA,SKF single row angular contact ball bearings can accommodate axial loads in one direction only. This type of bearing is typically adjusted against a second bearing. Their bearing rings have an upper and a lower shoulder and are non-separable.

The SKF standard assortment of single row angular contact ball bearings (fig. 1) includes:
bearings in the 72 B(E) and 73 B(E) series with 40° contact angle
some sizes in the 70 B series
sealed bearings:
in series 72 B(E) (15 ≤ d ≤ 55 mm)
in series 73 B(E) (12 ≤ d ≤ 50 mm)
bearings in the 72 AC series with 25° contact angle (15 ≤ d ≤ 70 mm)
bearings in the 73 AC series with 25° contact angle (17 ≤ d ≤ 70 mm)
some large size bearings with a flanged outer ring
SKF inch bearings (ALS and AMS series)
SKF Bearing 305263 DA, Features and benefits
High load carrying capacity
The lower shoulder enables a large number of balls to be incorporated in the bearing, giving it a relatively high load carrying capacity.

Good running properties
Rapid accelerations and declarations are possible.
Easy mounting of universally match-able bearings
No adjustment is needed for correct internal clearance or preload.
For bearings arranged in pairs, the limiting speed should be reduced to approximately 80% of the value quoted for a single bearing.

The speed ratings in the product table indicate:
the reference speed, which enables a quick assessment of the speed capabilities from a thermal frame of reference
the limiting speed, which is a mechanical limit that should not be exceeded unless the bearing design and the application are adapted for higher speeds

SKF Bearing 305263 DA, Single row angular contact ball bearings are particularly suitable where:
bearing arrangements must support combined loads moderate to high axial loads are present on one side rigid axial guidance is required the bearing arrangement must be axially clearance-free or preload-ed high speeds are required under higher radial and axial loads.

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Literature & catalogs

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