| Bearing number |
7210 ACD/P4A |
| Size (mm) |
50x90x20 |
| Bore Diameter (mm) |
50 |
| Outer Diameter (mm) |
90 |
| Width (mm) |
20 |
| d |
50 mm |
| D |
90 mm |
| B |
20 mm |
| C |
20 mm |
| d1 |
62.3 mm |
| d2 |
62.3 mm |
| r1 min. |
1,1 mm |
| r2 min. |
1,1 mm |
| r3 min. |
0,6 mm |
| r4 min. |
0,6 mm |
| D1 |
77.7 mm |
| D2 |
80,7 mm |
| da min. |
57 mm |
| Da max. |
83 mm |
| db min |
57 mm |
| ra max. |
1 mm |
| rb max. |
0.6 mm |
| dh |
65,6 mm |
| Db max |
85,8 mm |
| Weight |
0,46 Kg |
| Basic dynamic load rating (C) |
42,3 kN |
| Basic static load rating (C0) |
32,5 kN |
| (Grease) Lubrication Speed |
14 000 r/min |
| (Oil) Lubrication Speed |
22 000 r/min |
| Fatigue load limit (Pu) |
1,37 |
| Category |
Precision Ball Bearings |
| Inventory |
0.0 |
| Minimum Buy Quantity |
N/A |
| Weight / Kilogram |
0.479 |
| Product Group |
B04270 |
| Enclosure |
Open |
| Precision Class |
ABEC 7 | ISO P4 |
| Material - Ball |
Steel |
| Number of Bearings |
1 (Single) |
| Contact Angle |
25 Degree |
| Preload |
None |
| Raceway Style |
1 Rib Outer Ring |
| Cage Material |
Phenolic |
| Rolling Element |
Ball Bearing |
| Flush Ground |
No |
| Inch - Metric |
Metric |
| Other Features |
Single Row | Angular Contact | Super Precision | High Capacity |
| Long Description |
50MM Bore; 90MM Outside Diameter; 20MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Steel Ball Material; 1 (Single) Bearings; 25 Degree Contact Angle; Phenolic Cage Material; 1 Rib Outer Ring Rac |
| UNSPSC |
31171531 |
| Harmonized Tariff Code |
8482.10.50.28 |
| Noun |
Bearing |
| Keyword String |
Angular Contact Ball |
| Manufacturer Item Number |
7210 ACD/P4A |
| Weight / LBS |
1.047 |
| Bore |
1.969 Inch | 50 Millimeter |
| Outside Diameter |
3.543 Inch | 90 Millimeter |
| Width |
0.787 Inch | 20 Millimeter |
| r1,2 min. |
1.1 mm |
| r3,4 min. |
0.6 mm |
| a |
26.4 mm |
| db min. |
57 mm |
| Db max. |
85.8 mm |
| dn |
65.6 mm |
| Basic dynamic load rating C |
42.3 kN |
| Basic static load rating C0 |
32.5 kN |
| Fatigue load limit Pu |
1.37 kN |
| Attainable speed for grease lubrication |
14000 r/min |
| Attainable speed for oil-air lubrication |
22000 r/min |
| Ball diameter Dw |
12.7 mm |
| Number of balls z |
15 |
| Reference grease quantity Gref |
6.708 cm³ |
| Preload class A GA |
265 N |
| Static axial stiffness, preload class A |
154 N/µm |
| Preload class B GB |
530 N |
| Static axial stiffness, preload class B |
201 N/µm |
| Preload class C GC |
1060 N |
| Static axial stiffness, preload class C |
266 N/µm |
| Preload class D GD |
2120 N |
| Static axial stiffness, preload class D |
359 N/µm |
| Calculation factor f |
1.08 |
| Calculation factor f1 |
0.99 |
| Calculation factor f2A |
1 |
| Calculation factor f2B |
1.01 |
| Calculation factor f2C |
1.02 |
| Calculation factor f2D |
1.05 |
| Calculation factor fHC |
1 |
| Calculation factor e |
0.68 |
| Calculation factor (single, tandem) Y2 |
0.87 |
| Calculation factor (single, tandem) Y0 |
0.38 |
| Calculation factor (single, tandem) X2 |
0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 |
0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 |
1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 |
0.76 |
| Calculation factor (back-to-back, face-to-face) X2 |
0.67 |
| Mass bearing |
0.46 kg |