Our goal is to exceed our customers' expectation in providing quality products
+86-177-4621-9784
admin@wsbearing.com
Two mating single row angular contact ball bearings in an ultra-precision, high load-carrying capacity, D-design are available in a variety of configurations. Designed for high load carrying capacity and higher speed operation, it is more capable of withstanding higher loads than the same SKF B- and E-designed high-speed bearings.
SKF 7021 ACD/HCP4ALDGA
| Universal mating bearings |
Yes, back-to-back (<>), face-to-face (><), or tandem (>>) configurations
|
| d |
105 mm
|
aperture |
|---|---|---|
| D |
160 mm
|
Outside diameter |
| B |
52 mm
|
width |
| d1 |
121.9 mm
|
Inner ring flange diameter (large end) |
| d2 |
121.9 mm
|
Inner ring flange diameter (small end face) |
| D1 |
143.1 mm
|
Outer ring flange diameter (large end) |
| b |
2.4 mm
|
Lubrication groove width |
| C1 |
14.1 mm
|
The distance between the sides of the outer ring and the lubrication groove or lubrication hole |
| C2 |
6.2 mm
|
The distance from the side of the outer ring to the O-seal |
| C3 |
5 mm
|
The distance from the side of the outer ring to the O-seal |
| r1,2 |
min.2 mm
|
Chamfer size |
| r3,4 |
min.1 mm
|
Chamfer size |
| da |
min.114 mm
|
Shaft shoulder diameter |
|---|---|---|
| db |
min.114 mm
|
Shaft shoulder diameter |
| Da |
max.151 mm
|
Housing shoulder diameter |
| Db |
max.155 mm
|
Housing shoulder diameter |
| ra |
max.2 mm
|
Fillet radius |
| rb |
max.1 mm
|
Fillet radius |
| Basic dynamic load rating | C |
148 000 N
|
|---|---|---|
| Basic static load rating | C0 |
186 000 N
|
| Fatigue load limits | Pu |
5 000 N
|
| Allowable speed |
Contact SKF to find out about achievable speeds
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
17.462 mm
|
| Number of columns | i |
2
|
| Number of balls (per bearing) | z |
21
|
| Reference grease volume (per bearing) | Gref |
20.4 cm³
|
| Preload class |
A
|
|
| Preloading | G |
560 N
|
| Axial stiffness |
309 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
|
| Correction factor for hybrid bearings | fHC |
1.02
|
| Calculate the coefficients | e |
0.68
|
|---|---|---|
| Axial load factor (single row or tandem configuration) | Y1 |
0
|
| 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) | X1 |
1
|
| Axial load factor (single row or tandem configuration) | X2 |
0.41
|
| Axial load factor (single row or tandem configuration) | X0 |
0.5
|
| 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) | X1 |
1
|
| Radial load factor (back-to-back or face-to-face configuration) | X2 |
0.67
|
| Radial load factor (back-to-back or face-to-face configuration) | X0 |
1
|
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
