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| NTN 6303 Bearing Details： |
| Bearing Name | 6303 |
| New Model | 6303 |
| Old Model | 303 bearing |
| product Model | 6303 |
| Category | Deep Groove Ball Bearings |
| Brand | NTN Bearing |
| Inner Diameter d ( mm ) | 17 |
| Outer Diameter D ( mm ) | 47 |
| Thickness B ( mm ) | 14 |
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| NTN 6303 Bearing Bearing Size and Drawing： |
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NTN 6303 Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| STEYR 1303 Bearing | 17 | 47 | 14 | STEYR | Self-aligning Ball Bearings |
| KOYO 6303-RZ Bearing | 17 | 47 | 14 | KOYO | Deep Groove Ball Bearings |
| NACHI NU 303 E Bearing | 17 | 47 | 14 | NACHI | Cylindrical Roller Bearings |
| STEYR 6303-2RS Bearing | 17 | 47 | 14 | STEYR | Deep Groove Ball Bearings |
| KOYO 63032RU Bearing | 17 | 47 | 14 | KOYO | Deep Groove Ball Bearings |
| STEYR 6303-RS Bearing | 17 | 47 | 14 | STEYR | Deep Groove Ball Bearings |
| STEYR 6303N Bearing | 17 | 47 | 14 | STEYR | Deep Groove Ball Bearings |
| TBS W 6303 Bearing | 17 | 47 | 14 | TBS | Deep Groove Ball Bearings |
| KOYO NJ303E+HJ303E Bearing | 17 | 47 | 14 | KOYO | Cylindrical Roller Bearings |
| KOYO NU303R Bearing | 17 | 47 | 14 | KOYO | Cylindrical Roller Bearings |
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What are the advantages of the Deep Groove Ball Bearings design?
The inner and outer raceways are deep grooves, with point contact between the steel balls and the raceways, resulting in low friction and low heat generation. The structure is simple and compact, capable of withstanding combined radial and bidirectional axial loads, with high limiting speeds, low noise, and some compensation capability for installation angle deviations, facilitating high-precision mass production.
What are the advantages of Deep Groove Ball Bearings compared to similar products?
Compared to angular contact ball bearings, they can withstand bidirectional axial forces and do not require pairing; compared to cylindrical roller bearings, they can withstand axial loads and have higher speeds; compared to thrust ball bearings, they can simultaneously withstand radial forces. They offer balanced overall performance, achieving the optimal balance in cost, speed, load capacity, and ease of installation, making them the most versatile.
What are the applications and classic applications of Deep Groove Ball Bearings?
They are widely used in motors, automotive alternators and gearboxes, household appliances (washing machines, vacuum cleaners), water pumps, and precision transmission equipment. Classic applications include rotor supports for small and medium-sized motors, automotive alternators, air conditioning compressors, and roller-type moving parts, making them the most common type of bearing in rotating machinery.
