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With a contact angle of 25°, these ultra-precision, high-capacity, single-row angular contact ball bearings can withstand both radial and axial loads, which can only act in one direction. Designed for low to medium operating temperatures, relatively high speeds and heavy loads.
SKF 71804 ACD/HCP4
| Universal mating bearings |
not
|
| d |
20 mm
|
aperture |
|---|---|---|
| D |
32 mm
|
Outside diameter |
| B |
7 mm
|
width |
| d1 |
24.1 mm
|
Inner ring flange diameter (large end) |
| d2 |
24.1 mm
|
Inner ring flange diameter (small end face) |
| D1 |
28.1 mm
|
Outer ring flange diameter (large end) |
| r1,2 |
min.0.3 mm
|
Chamfer size |
| r3,4 |
min.0.15 mm
|
Chamfer size |
| a |
9.6 mm
|
The distance from the end face to the pressure point |
| da |
min.22 mm
|
Shaft shoulder diameter |
|---|---|---|
| db |
min.22 mm
|
Shaft shoulder diameter |
| Da |
max.30 mm
|
Housing shoulder diameter |
| Db |
max.31.2 mm
|
Housing shoulder diameter |
| ra |
max.0.3 mm
|
Fillet radius |
| rb |
max.0.15 mm
|
Fillet radius |
| dn |
24.5 mm
|
Injector location |
| Basic dynamic load rating | C |
3.64 kN
|
|---|---|---|
| Basic static load rating | C0 |
2.5 kN
|
| Fatigue load limits | Pu |
0.078 kN
|
| The permissible speed at which the grease lubricates |
48 000 r/min
|
|
| The permissible speed of air-air lubrication |
75 000 r/min
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
3.175 mm
|
| Number of columns | i |
1
|
| Number of balls (per bearing) | z |
17
|
| Reference grease volume (per bearing) | Gref |
0.18 cm³
|
| Class A preload | GA |
32 N
|
|---|---|---|
| Class A preload axial stiffness (two bearings back-to-back or face-to-face configuration) |
58 N/µm
|
|
| Class B preload | GB |
100 N
|
| Preload Class B axial stiffness (two bearings back-to-back or face-to-face configuration) |
92 N/µm
|
|
| Class C preload | GC |
200 N
|
| Preload Class C Axial stiffness (two bearings back-to-back or face-to-face configuration) |
125 N/µm
|
| The correction factor depends on the bearing series and size | f |
1.08
|
|---|---|---|
| The correction factor depends on the angle of contact | f1 |
0.97
|
| preload grade A correction factor, | f2A |
1
|
| Preload class B correction factor | f2B |
1.09
|
| Preload C-level correction factor | f2C |
1.17
|
| Correction factor for hybrid bearings | fHC |
1.02
|
| Limit values | e |
0.68
|
|---|---|---|
| Axial load factor (single row or tandem configuration) | Y2 |
0.87
|
| Axial load factor (single row or tandem configuration) | Y0 |
0.38
|
| Axial load factor (single row or tandem configuration) | X2 |
0.41
|
| Axial load factor (back-to-back or face-to-face configuration) | Y1 |
0.92
|
| Axial load factor (back-to-back or face-to-face configuration) | Y2 |
1.41
|
| Axial load factor (back-to-back or face-to-face configuration) | Y0 |
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
