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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 71820 CD/P4DGA
| Universal mating bearings |
Yes, back-to-back (<>), face-to-face (><), or tandem (>>) configurations
|
| d |
100 mm
|
aperture |
|---|---|---|
| D |
125 mm
|
Outside diameter |
| B |
26 mm
|
width |
| d1 |
108.2 mm
|
Inner ring flange diameter (large end) |
| d2 |
108.2 mm
|
Inner ring flange diameter (small end face) |
| D1 |
117 mm
|
Outer ring flange diameter (large end) |
| r1,2 |
min.1 mm
|
Chamfer size |
| r3,4 |
min.0.3 mm
|
Chamfer size |
| da |
min.104.6 mm
|
Shaft shoulder diameter |
|---|---|---|
| db |
min.104.6 mm
|
Shaft shoulder diameter |
| Da |
max.120.4 mm
|
Housing shoulder diameter |
| Db |
max.123 mm
|
Housing shoulder diameter |
| ra |
max.1 mm
|
Fillet radius |
| rb |
max.0.3 mm
|
Fillet radius |
| dn |
109.1 mm
|
Injector location |
| Basic dynamic load rating | C |
37 100 N
|
|---|---|---|
| Basic static load rating | C0 |
58 500 N
|
| Fatigue load limits | Pu |
2 320 N
|
| Allowable speed |
Contact SKF to find out about achievable speeds
|
|
| Contact angle | α |
15 °
|
| Ball diameter | Dw |
7.144 mm
|
| Number of columns | i |
2
|
| Number of balls (per bearing) | z |
34
|
| Reference grease volume (per bearing) | Gref |
3.2 cm³
|
| Preload class |
A
|
|
| Preloading | G |
120 N
|
| Axial stiffness |
90 N/µm
|
| The correction factor depends on the bearing series and size | f |
1.4
|
|---|---|---|
| The correction factor depends on the angle of contact | f1 |
1
|
| preload grade A correction factor, | f2A |
1
|
| Correction factor for hybrid bearings | fHC |
1
|
| Equivalent load calculation factor | f0 |
17.4
|
|---|---|---|
| Equivalent load add-on factor |
Please see notes 1 and 2 below
|
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
