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71821 ACD/P4
High Speed Angular Contact Ball Bearings
Dimensions: Bore (Inner) Diameter: 105 mm； Outer Diameter: 130 mm； Width (Thickness): 13 mm;
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Product Attributes
| Bearing Type | Ball |
| For Load Direction | Combined Radial and Thrust |
| Single Row/Double Row | Single |
| Seal Type | Open |
| Precision Rating | P4 (ABEC-7) |
| Contact Angle | 25 |
| Part Number | 71821 ACD/P4 |
| NSK Code | 7821A5TRP4 |
| Arrangement | DB Set of two bearings arranged back-to-back |
| DF Set of two bearings arranged face-to-face > | |
| DT Set of two bearings arranged in tandem | |
| DG Set of two bearings for universal matching | |
| Bore Dia (d) | 105 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia (D) | 130 mm |
| Outer Dia Tolerance | -0.009mm to 0 |
| Width (B) | 13 mm |
| Width Tolerance | -0.2mm to 0 |
| Ring Material | 52100 Chrome steel |
| Ball Material | 52100 Chrome steel |
| Cage Material | Polyamide |
| Dynamic Load Rating (Cr) (KN) | 21.6 |
| Static Load Rating (Cor) (KN) | 28.5 |
| Max Speed (Grease) (RPM) | 8000 |
| Max Speed (Oil) (RPM) | 12000 |
| Preload | Extra Light Preload |
| Light Preload | |
| Medium Preload | |
| Heavy Preload | |
| Special Preload | |
| Special Axial Clearance | |
| Lubrication | Required |
| Shaft Mount Type | Press Fit |
| Temperature Range | -40 to 120 ºC |
| Weight (grams) | 320 |
| RoHS | Compliant |
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