SKF ANGULSKF CONTACT BALL BEARINGS, SUPER-PRECISION SKF 7048 ACD/P4A
SKF 7048 ACD/P4A
Description
SKF 7048 ACD/P4A
| Universal mating bearings |
not
|
size
| d |
240 mm
|
aperture |
|---|---|---|
| D |
360 mm
|
Outside diameter |
| B |
56 mm
|
width |
| d1 |
277 mm
|
Inner ring flange diameter (large end) |
| d2 |
277 mm
|
Inner ring flange diameter (small end face) |
| D1 |
323 mm
|
Outer ring flange diameter (large end) |
| r1,2 |
min.3 mm
|
Chamfer size |
| r3,4 |
min.1.5 mm
|
Chamfer size |
| a |
98.3 mm
|
The distance from the end face to the pressure point |
Shoulder size
| da |
min.253 mm
|
Shaft shoulder diameter |
|---|---|---|
| db |
min.253 mm
|
Shaft shoulder diameter |
| Da |
max.347 mm
|
Housing shoulder diameter |
| Db |
max.354 mm
|
Housing shoulder diameter |
| ra |
max.2.5 mm
|
Fillet radius |
| rb |
max.1.5 mm
|
Fillet radius |
| dn |
287 mm
|
Injector location |
Data calculations
| Basic dynamic load rating | C |
325 kN
|
|---|---|---|
| Basic static load rating | C0 |
465 kN
|
| Fatigue load limits | Pyou |
11.4 kN
|
| The permissible speed at which the grease lubricates |
3 400 r/min
|
|
| The permissible speed of air-air lubrication |
5 000 r/min
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Din |
38.1 mm
|
| Number of Columns | i |
1
|
| Number of balls (per bearing) | with |
22
|
| Reference grease volume (per bearing) | Gref |
216 cm³
|
| Class A preload | GA |
2 050 N
|
|---|---|---|
| Class A preload axial stiffness (two bearings back-to-back or face-to-face configuration) |
571 N/µm
|
|
| Class B preload | GB |
4 100 N
|
| Preload Class B axial stiffness (two bearings back-to-back or face-to-face configuration) |
743 N/µm
|
|
| Class C preload | GC |
8 200 N
|
| Preload Class C Axial stiffness (two bearings back-to-back or face-to-face configuration) |
979 N/µm
|
|
| Class D preload | GD |
16 400 N
|
| Preload Class D Axial stiffness (two bearings back-to-back or face-to-face configuration) |
1 315 N/µm
|
| The correction factor depends on the bearing series and size | f |
1.15
|
|---|---|---|
| The correction factor depends on the angle of contact | f1 |
0.99
|
| preload grade A correction factor, | f2A |
1
|
| Preload class B correction factor | f2B |
1.02
|
| Preload C-level correction factor | f2C |
1.05
|
| Preload grade D correction factor | f2D |
1.08
|
| Correction factor for hybrid bearings | fHC |
1
|
| Limit values | and |
0.68
|
|---|---|---|
| Axial load factor (single row or tandem configuration) | And2 |
0.87
|
| Axial load factor (single row or tandem configuration) | And0 |
0.38
|
| Axial load factor (single row or tandem configuration) | X2 |
0.41
|
| Axial load factor (back-to-back or face-to-face configuration) | And1 |
0.92
|
| Axial load factor (back-to-back or face-to-face configuration) | And2 |
1.41
|
| Axial load factor (back-to-back or face-to-face configuration) | And0 |
0.76
|
| Radial load factor (back-to-back or face-to-face configuration) | X2 |
0.67
|
As a professional bearing exporter and SKF distributor, WS Bearing stocks thousands kindsof Angular contact ball bearings,super-precision for sale，We can export to Singapore–Viet Nam–Malaysia–Indonesia-Germany-USA etc.we have always been committed to providing our customers with the highest quality products and the most satisfactory services. Through collaborations with top brands such as SKF, TIMKEN, FAG, THK, and others, we have not only established a wide range of product lines but also accumulated rich industry experience and technical knowledge. If you have problems about selecting proper bearings for your special applications, please contact us right now
