6306 Bearing Dimensions
30 × 72 × 19 mm
✓ Verified starter recordThe standard 6306 bearing has a 30 mm bore, 72 mm outside diameter, and 19 mm width. This page provides a dimensional reference in millimeters and inches, plus nearby sizes for comparison.
6306 bearing size
| Dimension | Metric | Inches |
|---|---|---|
| Bore diameter (d) | 30 mm | 1.1811 in |
| Outside diameter (D) | 72 mm | 2.8346 in |
| Width (B) | 19 mm | 0.7480 in |
Inch values are metric conversions rounded to four decimal places.
What does 6306 mean?
6306 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 6306 should therefore be checked against 30 × 72 × 19 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
6306 dimension FAQ
What is the bore of a 6306?
The bore diameter is 30 mm (1.1811 in).
What is the OD of a 6306?
The outside diameter is 72 mm (2.8346 in).
How wide is a 6306?
The bearing width is 19 mm (0.7480 in).