Angular contact ball bearings, super-precision 7210CD/P4ADGA
SKU:SUP000009
Angular contact ball bearings, super-precision 7210CD/P4ADGA
Manufacturer : SKF
Description
Technical specification
DIMENSIONS
| d |
50 mm
|
|
|---|---|---|
| D |
90 mm
|
|
| B |
20 mm
|
|
| d1 |
62.3 mm
|
|
| d2 |
62.3 mm
|
|
| D1 |
77.7 mm
|
|
| r1,2 |
min. 1.1 mm
|
|
| r3,4 |
min. 0.6 mm
|
|
| a |
19.4 mm
|
ABUTMENT DIMENSIONS
| da |
min. 57 mm
|
|
|---|---|---|
| db |
min. 57 mm
|
|
| Da |
max. 83 mm
|
|
| Db |
max. 85.8 mm
|
|
| ra |
max. 1 mm
|
|
| rb |
max. 0.6 mm
|
|
| dn |
65.6 mm
|
CALCULATION DATA
| Basic dynamic load rating | C |
44.9 kN
|
|---|---|---|
| Basic static load rating | C0 |
34 kN
|
| Fatigue load limit | Pu |
1.43 kN
|
| Attainable speed for grease lubrication |
16 000 r/min
|
|
| Attainable speed for oil-air lubrication |
26 000 r/min
|
|
| Contact angle | α |
15 °
|
| Ball diameter | Dw |
12.7 mm
|
| Number of balls | z |
15
|
| Reference grease quantity | Gref |
6.708 cm³
|
| Preload class A | GA |
170 N
|
|---|---|---|
| Static axial stiffness, preload class A |
65 N/µm
|
|
| Preload class B | GB |
340 N
|
| Static axial stiffness, preload class B |
88 N/µm
|
|
| Preload class C | GC |
680 N
|
| Static axial stiffness, preload class C |
124 N/µm
|
|
| Preload class D | GD |
1 360 N
|
| Static axial stiffness, preload class D |
178 N/µm
|
| Calculation factor | f |
1.08
|
|---|---|---|
| Calculation factor | f1 |
1
|
| Calculation factor | f2A |
1
|
| Calculation factor | f2B |
1.01
|
| Calculation factor | f2C |
1.03
|
| Calculation factor | f2D |
1.05
|
| Calculation factor | fHC |
1
|
| Calculation factor | f0 |
14.5
|
MASS
| Mass bearing |
0.46 kg
|
|---|