1) MANUFACTURING
RANGE
| |
dimension
series |
d |
Cage |
single
row -
(B-type) - standard |
728,
719...B, 72...B,
73... B,74...B |
15..280
mm |
M,MA,MB |
| four
points contact ball bearings |
QJ2,
QJ3 |
35...200
mm |
M |
single
row -
specials |
75,
76, 77, 78 |
23.5...190
mm |
M,MA,MB |
single
row - high
precision (A,C type) |
70..A,
70..C, 72..A, 72..C |
15..150
mm |
TA,TB,MA,MB |
double
row -
standard |
32,
33, 52, 53 |
20...100
mm |
|
double
row -
specials |
34,
35, 36, 37, 38 |
12...190
mm |
M,MA,MB |
2) DESIGN
TYPES a)
Single row angular contact ball bearings
of universal design are suitable for DB, DF or DT arrangements;
bearings of universal design are manufactured to more accurate
tolerance classes and can be matched if the mounting conditions
UA, UO and UL are observed.
b)
Double row angular contact ball bearings can be manufactured
in two versions :
with non-separable inner ring and filling slots on one side,
series 32 and 33
with seperable inner ring, series 33D
3) TECHNICAL
EXECUTION CONDITIONS
a) DIMENSIONS
main dimensions of bearings
are accordance with ISO/R15
b)
TOLERANCE CLASSES
single row angular contact ball bearings with a contact
angle of 15 degrees (series 70C, 72C, 70A) or 25 degrees (series
72A) are manufactured to tolerance classes SP, P4, UP and
P2. Single row angular contact ball bearings with a contact
angle of 40 degrees (series 72B, 73B) are manufactured to
the normal tolerance class.
Double
row angular contact ball bearings are generally manufactured
to the normal tolerance class
axial clearance : series 32 and 33 are manufactured to the
normal axial clearance series 33D has larger axial clearance
4)
CAGE TYPES
pressed steel cage (without cage suffix) for series 72B and
73B
machined brass cage (M, MA, MB) for series 70C, 72C, 70A and
72A
polyamide cage (TN)
textolite cage (T, TA, TB) for series 70C, 72C, 70A and 72A
5) APPLICATIONS
a)
ENGINEERING MACHINE INDUSTRY
b)
METAL- WORKING INDUSTRY
c)
CHEMICAL INDUSTRY
d)
MINING INDUSTRY
6) SUGGESTIONS
a)
MISALIGNMENT when
the bearings are paired in DB arrangements, angular misalignments
of the outer ring in relation to the inner ring can only be
accommodated between the balls and raceways by force, leading
to reduction in bearing life.
b)
MINIMUM AXIAL LOAD
c)
RUNNING TEMPERATURES
|
