Specifications

Exhaust fan bearings 1204
1.Gcr15 material
2.Two rows of steel balls
3.High loads
4.ISO:9001:2000

Exhaust fan bearings 1204

Brif introductions of Exhaust fan bearings 1204

Self-aligning ball bearings are constructed with the inner ring and ball assembly contained within an outer ring that has a spherical raceway. This construction allows the bearing to tolerate a small angular misalignment resulting from deflection or improper mounting. It is particularly suitable for applications 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.

The components of the self aligning ball bearing include two rows of balls, a cage, an inner ring, and an outer ring with a common concave sphered raceway.This type of bearings is self-aligning and insensitive to angular misalignments of the shaft relative to the housing. The bearings are produced in several design: open bearings with the basic design, sealed bearings, open bearings with an extended inner ring.The self alignning ball bearings have the lowest friction of all rolling bearings.The bearings are available with a cylindrical bore or with a tapered bore in certain size ranges. When shaft shell deflection occurs, they can be automatically adjusted without increasing the burden on the bearings. They can withstand higher radial load, but also bear certain axial load. This kind of bearing's outer ring raceway is spherical, aligning it with the performance, when the bend or tilt axis force leaves the center line of the inner and outer rings relative to the center line of slope less than 1 °to 2.5 °, the bearings can still work. With two structures of bore cylindrical or tapered and retainers made of steel sheet or synthetic resins, the bearings'spherically formed outer ring raceways allowes for misalignment within 3 degree deflection between inner ring and outer ring so as to compensate concentricity and deflection errors.

The self-aligning roller bearing is self-adjusted, and it is not affected by non-centering or shaft deformation flexure of shaft and bearing block, so it can compensate the concentricity error caused by these reasons.

Except being subject to radial load, this type of bearing can also be subject to bidirectional axial load and their combination load. The load capacity is large, and the bearing is provided with preferable shock resistant capacity. Self-aligning roller bearings are mainly applied on mechanical equipments of steel, mine, paper making, shipping, textile machinery, coal mill and electric power industries.

Specifications of Exhaust fan bearings 1204

 

 

d	20
D	47
B	14
r	1
Cr	9.9
Cor	2.6
Crease	14000
Oil	17000
Cylindrical	1204
bore	1204K
da	25
Da	42
ra	1
e	0.29
Y1	2.16
Y2	3.35
Y0	2.27
Approx Cylindrical bore	0.120
Tapered bore	0.118

 

 

Self-Aligning ball bearing suffix definition:

C3: Radial clearance greater than normal clearance
K: 1/12 taper tapered bore
K30: 1/30 taper tapered bore
M: ball guide machined solid brass cage
2RS: closures with both ends
TV: ball guide glass fiber reinforced polyamide (nylon) solid cage

Feature of Exhaust fan bearings 1204

withstand the big radial direction load, and at the same time also can absorb a certain amount of axial load. This kind of bearing's outer ring raceway is spherical shape, it has self-aligning properties, when axial stress bending or tilted and make the inner ring and outer center line of the center line of the relative tilt does not exceed 1 ° ~ 2.5 °, bearing can still work.  

 1. The self aligning ball bearings have two rows of balls and a common concave sphered raceway in the outer ring.

 

2. The bearings are inherently self-aligning and insensitive to angular misalignments of the shaft relative to the housing.

 

3. The series of the self aligning ball bearings include 1200, 1300, 2200, 2300 and so on.

 

4. The bearings are also available with a cylindrical bore or, in certain size ranges, with a tapered bore

 

5. This type bearing have the lowest friction of all rolling bearings.

 

Application

Self-aligning ball bearing is designed to withstand heavy loads and shock load, precision instruments, low noise machine, automobile, motorcycle, metallurgy, rolling mill, mining, petroleum, papermaking, cement, sugar industry, general machinery, etc

Models of self-aligning ball bearings

 

 

Model	Size
2302	15 x 42 x 17
2303	17 x 47 x 19
2304K	20 x 52 x 21
2305K	25 x 62 x 24
2306K	30 x 72 x 27
2307K	35 x 80 x 31
2308K	40 x 90 x 33
2309K	45 x 100 x 36
2310K	50 x 110 x 40
2311K	55 x 120 x 43
2312K	60 x 130 x 46
2313K	65 x 140 x 48
2314K	70 x 150 x 51
2315K	75 x 160 x 55
2316K	80 x 170 x 58