Bearing number |
7210 ACD/HCP4A |
Size (mm) |
90x50x20 |
Bore Diameter (mm) |
90 |
Outer Diameter (mm) |
50 |
Width (mm) |
20 |
d |
50 mm |
D |
90 mm |
B |
20 mm |
d1 |
62.3 mm |
d2 |
62.3 mm |
D1 |
77.7 mm |
r1,2 - min. |
1.1 mm |
r3,4 - min. |
0.6 mm |
a |
26.4 mm |
da - min. |
57 mm |
db - min. |
57 mm |
Da - max. |
83 mm |
Db - max. |
85.8 mm |
ra - max. |
1 mm |
rb - max. |
0.6 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 |
1.4 kN |
Limiting speed for grease lubrication |
16000 r/min |
Limiting speed for oil lubrication |
26000 mm/min |
Ball - Dw |
12.7 mm |
Ball - z |
15 |
Gref |
6.708 cm3 |
Calculation factor - e |
0.68 |
Calculation factor - Y2 |
1.41 |
Calculation factor - Y0 |
0.76 |
Calculation factor - X2 |
0.67 |
Calculation factor - Y1 |
0.92 |
Preload class A - GA |
265 N |
Preload class B - GB |
530 N |
Preload class C - GC |
1060 N |
Preload class D - GD |
2120 N |
Calculation factor - f |
1.08 |
Calculation factor - f1 |
0.99 |
Calculation factor - f2A |
1 |
Calculation factor - f2B |
1.01 |
Calculation factor - f2C |
1.03 |
Calculation factor - f2D |
1.06 |
Calculation factor - fHC |
1.01 |
Preload class A |
171 N/micron |
Preload class B |
223 N/micron |
Preload class C |
295 N/micron |
Preload class D |
398 N/micron |
Category |
Precision Ball Bearings |
Inventory |
0.0 |
Minimum Buy Quantity |
N/A |
Product Group |
B04270 |
Enclosure |
Open |
Precision Class |
ABEC 7 | ISO P4 |
Material - Ball |
Ceramic |
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 | High Capacity Basic Design |
Long Description |
50MM Bore; 90MM Outside Diameter; 20MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Ceramic Ball Material; 1 (Single) Bearing; 25 Degree Contact Angle; Phenolic Cage Material; 1 Rib Outer Ring Ra |
UNSPSC |
31171531 |
Harmonized Tariff Code |
8482.10.50.28 |
Noun |
Bearing |
Keyword String |
Ball Angular Contact |
Outside Diameter |
3.543 Inch | 90 Millimeter |
Bore |
1.969 Inch | 50 Millimeter |
Width |
0.787 Inch | 20 Millimeter |
r1,2 min. |
1.1 mm |
r3,4 min. |
0.6 mm |
da min. |
57 mm |
db min. |
57 mm |
Da max. |
83 mm |
Db max. |
85.8 mm |
ra max. |
1 mm |
rb max. |
0.6 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 |
16000 r/min |
Attainable speed for oil-air lubrication |
26000 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 |
171 N/µm |
Preload class B GB |
530 N |
Static axial stiffness, preload class B |
223 N/µm |
Preload class C GC |
1060 N |
Static axial stiffness, preload class C |
295 N/µm |
Preload class D GD |
2120 N |
Static axial stiffness, preload class D |
398 N/µm |
Calculation factor f |
1.08 |
Calculation factor f1 |
0.99 |
Calculation factor f2A |
1 |
Calculation factor f2B |
1.01 |
Calculation factor f2C |
1.03 |
Calculation factor f2D |
1.06 |
Calculation factor fHC |
1.01 |
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 |
0.39 kg |