6303 Bearing Dimensions
17 × 47 × 14 mm
✓ Verified starter recordThe standard 6303 bearing has a 17 mm bore, 47 mm outside diameter, and 14 mm width. This page provides a dimensional reference in millimeters and inches, plus nearby sizes for comparison.
6303 bearing size
| Dimension | Metric | Inches |
|---|---|---|
| Bore diameter (d) | 17 mm | 0.6693 in |
| Outside diameter (D) | 47 mm | 1.8504 in |
| Width (B) | 14 mm | 0.5512 in |
Inch values are metric conversions rounded to four decimal places.
What does 6303 mean?
6303 identifies a bearing in the 6300 dimensional series. For practical replacement work, the key fit dimensions are the bore, outside diameter and width. A part marked 6303 should therefore be checked against 17 × 47 × 14 mm before selection.
Suffixes such as seals, shields, internal clearance or manufacturer-specific variants can change construction or operating characteristics even when the principal dimensions remain the same. Confirm the exact manufacturer designation for critical applications.
Related bearing dimensions
6303 dimension FAQ
What is the bore of a 6303?
The bore diameter is 17 mm (0.6693 in).
What is the OD of a 6303?
The outside diameter is 47 mm (1.8504 in).
How wide is a 6303?
The bearing width is 14 mm (0.5512 in).