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BK4020
Drawn Cup Needle Roller Bearings
Dimensions: Bore (Inner) Diameter: 40 mm； Outer Diameter: 47 mm； Width (Thickness): 20 mm;
Product Attributes
| Bearing Type | Roller |
| Roller Bearing Type | Needle |
| For Load Direction | Radial |
| Construction | Single Row |
| End | Closed |
| System of Measurement | Metric |
| Seal Type | Open |
| Part Number | BK4020 |
| For Shaft Diameter | 40mm |
| Bore Dia (d) | 40mm |
| Bore Dia Tolerance | +25?m~+50?m |
| For Housing ID | 47mm |
| Outer Dia (D) | 47mm |
| Outer Dia Tolerance | Not Rated |
| Width (B) | 20mm |
| Width Tolerance | -0.3mm to 0mm |
| Ring Material | steel |
| Ball Material | steel |
| Cage Material | steel |
| Dynamic Load Rating (Cr) (Newtons) | 25500 N |
| Static Load Rating (Cor) (Newtons) | 52000 N |
| Fatigue limit load(Cur) (Newtons) | 6800 N |
| Max Speed (Grease) (RPM) | 6600 |
| Lubrication | Required |
| Lubricant | Grease |
| Shaft Mount Type | Press Fit |
| Temperature Range | -20 to 110 °C |
| RoHS | Compliant |
| Weight (grams) | 62 |
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