Deep groove ball bearing dimensions and designation systems comply with ISO 15 rolling bearing boundary dimension standards and ISO 5753 internal clearance classifications.
Typical rolling bearing designation structure showing the order of the main codes and suffixes. (Note: exact prefix/suffix sets vary by manufacturer.)
Meaning: deep groove ball bearing, 62 series, 25 mm bore, sealed both sides, C3 clearance.
Bearing designation format:
[Type][Series][Bore] + [Suffixes]
Deep groove ball bearings are identified by a leading 6. The following tables show ISO dimension series, bore codes, and common suffix designations.
| Series | Example | Description | Typical Applications |
|---|---|---|---|
| 60 | 6004 | Extra light series | High speed, light loads |
| 62 | 6205 | Light series | Electric motors, general machinery |
| 63 | 6306 | Medium series | Higher radial load capacity |
| 64 | 6408 | Heavy series | Heavy-duty machinery |
| 618 | 61805 | Thin section | Limited radial space |
| 619 | 61905 | Extra thin section | Precision equipment |
| 160 | 16005 | Extra light metric series | Small motors and compact assemblies |
| Bore Code | Bore Diameter (mm) | Notes |
|---|---|---|
| 00 | 10 | Special designation |
| 01 | 12 | Special designation |
| 02 | 15 | Special designation |
| 03 | 17 | Special designation |
| 04 | 20 | Bore = code × 5 |
| 05 | 25 | |
| 06 | 30 | |
| 07 | 35 | |
| 08 | 40 | |
| 09 | 45 | |
| 10 | 50 |
| Suffix | Meaning | Description |
|---|---|---|
| Z | Shield one side | Metal shield fitted one side |
| 2Z / ZZ | Shields both sides | Metal shields both sides |
| RS | Seal one side | Rubber contact seal |
| 2RS | Seals both sides | Rubber seals both sides |
| C3 | Greater clearance | Used for higher speed or temperature |
| C4 | Extra clearance | High temperature operation |
| M | Brass cage | Machined brass cage |
| NR | Snap ring groove | External retaining ring groove |