SKF Bearing 2308 EM

M: Machined brass cage, rolling element centred
d=40.0mm, D=90.0mm, B=33.0mm, Mass bearing=1.01kg
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of SKF Bearing 2308 EM

SKF Bearing 2308 EM

Dimensions

d 40.0mm Bore diameter
D 90.0mm Outside diameter
B 33.0mm Width
d1 53.75mm Shoulder diameter inner ring
D1 77.8mm Shoulder diameter outer ring
r1,2 1.5mm Chamfer dimension
SKF Bearing 2308 EM

Abutment dimensions

da 49.0mm Abutment diameter shaft
Da 81.0mm Abutment diameter housing
ra 1.5mm Fillet radius

Calculation data

Basic dynamic load rating C 54.0kN
Basic static load rating C0 16.0kN
Fatigue load limit Pu 0.815kN
Reference speed 14000.0r/min
Limiting speed 10000.0r/min
Permissible angular misalignment u03b1 3.0u00b0
Calculation factor kr 0.05
Calculation factor e 0.4
Calculation factor Y0 1.6
Calculation factor Y1 1.6
Calculation factor Y2 2.4

Mass

Mass bearing 1.01kg

Product description of SKF Bearing 2308 EM

SKF Bearing 2308 EM, Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed. The bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection, and we have related type you may also like SKF Bearing 2308 ETN9.

Due to the curved raceway on the outer ring, self-aligning ball bearings are tolerant of misalignment between the shaft and housing and deflections of the shaft. They can thus compensate static and dynamic angular defects within certain angular limits in a rotating shaft system.

In the self-aligning ball bearing, two rows of rolling elements are supported in two raceway grooves in the inner ring. The raceway on the outer ring has a curved form. The cage combines the two rows of balls and the inner ring to form a unit that can align itself by snivelling relative to the outer ring.

They are used particularly in sectors such as agricultural machinery, conveying equipment, simple woodworking machinery and ventilators.

SKF Bearing 2308 EM, Self-aligning ball bearings are better suited to higher speeds on account of their point contact, than barrel roller bearings with line contact. The bearings run more quietly and at lower temperatures than bearings with comparable specified characteristics.

Self-aligning ball bearings are particularly suitable:
if there is skewing between the outer and inner ring (for the compensation of angular misalignment) SKF Bearing 2308 EM, for bearing arrangements with high radial loads for higher speeds on account of their point contact, than barrel roller bearings with line contact where bearings with the above-mentioned characteristics are expected to run more quietly and at lower temperatures, even at high speeds The self-aligning ball bearing was invented by SKF. It has two rows of balls and a common sphered raceway in the outer ring. The bearing is consequently self-aligning and insensitive to angular misalignment of the shaft relative to the housing. It is particularly suitable for apple-cations where considerable shaft deflections or misalignment are to be expected. Additionally,the self-aligning ball bearing has the lowest friction of all rolling bearings, which enables it to run cooler even at high speeds.
SKF Bearing 2308 EM, SKF produces self-aligning ball bearings to several designs. These are
· open bearings of the basic design sealed bearings
· open bearings with an extended inner ring
Basic design
The basic design self-aligning ball bearing is available with a cylindrical bore or, in certain size ranges, with a tapered bore (taper 1:12).
Large self- aligning ball bearings in the 130and 139 series originally developed for specific applications in paper mills, can be used in any application where low friction is preferred over high load carrying capacity. These bearings are provided with an annular groove and lubrication holes in the outer ring and lubrication holes in the inner ring.
The balls of some bearings in the 12 and 13series protrude from the sides of the bearing.The values of the protrusion are provided in table 1 and should be considered when design-ing the associated components of the bearing arrangement.

We are looking for partners and friends,Not only business!

if you need more details,feel free to contact us, e-mail us at [email protected]

Literature & catalogs

SKF-Angular contact ball bearings
Download
SKF-Self-aligning ball bearings
Download
SKF-Spherical roller bearings
Download
SKF-Thrust bearings
Download
index.php
Download

Videos

SKF-bearing

SKF Cylindrical roller bearings

SKF USA Bearing Remanufacturing Services

SKF Tapered Roller Bearings Mounting and dismounting