henan province yuxi bearing co.,ltd.-凯发k8娱乐
- product list
- introduction
12 series
13 series
22 series
double row self-aligning ball bearings
double row self-aligning ball bearings have spherical raceway on the outer ring. they can misalign and also the misalignment of seating is acceptable for them. double row self-aligning ball bearings are produced with cylindrical or tapered bore and they are non-separable.
misaligning ability without impairing the bearing‘s proper functions allows the application of the bearings where a higher bore misalignment in bearing housings or deflection and oscillation of shaft can be expected. because of the small contact angle and imperfect adhesion of the balls to the raceways they are not suitable for higher axial loads.
tolerance
the double row self-aligning ball bearings are commonly manufactured within the normal tolerance class p0. for special applications requiring high accuracy or with high rotation speed bearings with higher tolerance classes p6, p5, p4 are used. limiting values of dimension deviations and operation are stated in the norm iso 492.
radial clearance
the commonly manufactured double row self-aligning ball bearings have normal radial clearance stated by the manufacturer. for special applications bearings with reduced radial clearance (c2) or with increased radial clearance (c3, c4, c5) can be supplied.
vibration level
the commonly manufactured double row self-aligning ball bearings have a normal vibration level specified by the manufacturer. for special arrangements demanding for silent operation bearings with reduced vibration level (c6) are supplied.
combination of symbols
the symbols for the tolerance classes, internal bearing clearances and vibration levels are combined with the simultaneous omission of the symbol c in the second and the following bearing special characteristics e.g.:
p6 c3 = p63
c3 c6 = c36
1206 p63
1307 c36
stabilisation for operation at higher temperature
for operating temperature higher than 120°c specially stabilized double row self-aligning ball bearings with stabilized dimensions for operating temperature from 150°c to 400°c (s0, s1, s2, s3, s4,s5) are produced. delivery of stabilized bearings should be discussed in advance.
misalignment
double row self-aligning ball bearings can accept misalignment of the bearing rings.
values of permissible misalignment without affecting the correct bearing operation are stated in the following table.
| bearing type | permissible misalignment |
|---|---|
| 12, 22 | 2º30´ |
| 126, 13, 23 | 3º |
radial equivalent dynamic load
pr= fr y1.fa– for fa/fr≤ e (kn)
pr= 0,65.fr y2.fa– for fa/fr> e (kn)
factor values e, y1a y2for individual bearings are stated in the table section.
radial equivalent static load
por= fr y0.fa(kn)
factor values y0are stated in the table section.
| cage 12, 13 | cage 22, 23 | cage 22, 23 |
designation
the designation of basic designs and common modifications of the bearings is specified in the dimension tables. modification of the basic design is indicated by additional symbols according to the norm stn 02 4608.