6004 Bearing Dimensions
20 × 42 × 12 mm
✓ Verified starter recordThe standard 6004 bearing has a 20 mm bore, 42 mm outside diameter, and 12 mm width. This page provides a dimensional reference in millimeters and inches, plus nearby sizes for comparison.
6004 bearing size
| Dimension | Metric | Inches |
|---|---|---|
| Bore diameter (d) | 20 mm | 0.7874 in |
| Outside diameter (D) | 42 mm | 1.6535 in |
| Width (B) | 12 mm | 0.4724 in |
Inch values are metric conversions rounded to four decimal places.
What does 6004 mean?
6004 identifies a bearing in the 6000 dimensional series. For practical replacement work, the key fit dimensions are the bore, outside diameter and width. A part marked 6004 should therefore be checked against 20 × 42 × 12 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
6004 dimension FAQ
What is the bore of a 6004?
The bore diameter is 20 mm (0.7874 in).
What is the OD of a 6004?
The outside diameter is 42 mm (1.6535 in).
How wide is a 6004?
The bearing width is 12 mm (0.4724 in).