63/28
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What 63/28 means
| Code | Position | Meaning |
|---|---|---|
6 |
Type | Deep groove ball bearing |
3 |
Diameter series | Diameter series 3 (medium): fixes OD and width for the bore (ISO 15) |
/28 |
Bore | Bore written in millimetres after the slash: 28 mm |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
63/28 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 28 mm | 1.1024 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 68 mm | 2.6772 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 18 mm | 0.7087 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Deep groove ball bearing | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Internal clearance | Normal (CN): no clearance code in the designation | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
Equivalent to / interchanges with
| Brand | Part number | Basis |
|---|---|---|
| SKF | 63/28-J | SKF Master Interchange |
| NTN | 63/28 | SKF Master Interchange |
| TIMKEN | 63/28 | Brand suffix convention for this ISO size |
| FAG | 63/28 | Brand suffix convention for this ISO size |
| NSK | 63/28 | Brand suffix convention for this ISO size |
| KOYO | 63/28 | Brand suffix convention for this ISO size |
| NACHI | 63/28 | Brand suffix convention for this ISO size |
Also listed in manufacturer interchange tables (1): confirm suffix codes before ordering
- KOYO 63/28SH2-9TCS30 (SKF Master Interchange)
These carry maker-specific suffix codes (cage, lubrication groove, design) that we have not matched one-for-one. The size is the same; check the codes against your application.
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
63/28 is a deep groove ball bearing, 28 mm bore × 68 mm OD × 18 mm wide (1.1024 × 2.6772 × 0.7087 in). It has no seals or shields (open). Published interchange tables list it as equivalent to SKF 63/28-J, NTN 63/28.
The 63/28 is a single row deep groove ball bearing designed for general-purpose rotating applications. Deep groove ball bearings feature deep raceway grooves with close conformity to the ball diameter, enabling them to accommodate radial loads and moderate axial loads in both directions.
