Wheel Bearings
1 DR650
| DR650 Wheel Bearings | |
|---|---|
| Front | 2 x 6003 |
| Rear | 2 x 6204 + 1 x 6205 |
(upgraded with Nachi bearings with rubber seal on both sides)
2 Bearing Codes
Disclaimer
- This is information collected from the Internet and I can't guarantee it is 100% accurate
- Roger Seguin
| 6003 | 2RS |
|---|---|
| (basic code) | (suffix) |
2.1 Code Breakdown
2.1.1 (6)003
The first digit relates to the bearing type, as shown in the table below type 6 is a deep grooved roller bearing.
| # | Description | |
|---|---|---|
| 1 | Self-Aligning Ball Bearing This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to "wander around". This is important because misalignment is one of the big causes of bearing failure |
|
| 2 | Double-Row Spherical Roller Bearing Single-Row Spherical Roller Bearing (Barrel Bearing) Most spherical roller bearings are designed with two rows of rollers, allowing them to take very heavy radial loads and heavy axial loads |
|
| 3 | Tapered Roller Bearing Designed to take large axial loads as well as radial loads |
|
| 4 | Deep Groove Double-Row Ball Bearing Designed for heavy radial loads |
|
| 5 | Axial Deep Groove Ball Bearing Intended for exclusively axial loads |
|
| 6 | Deep Groove Ball Bearing (Single row) Typical ball bearing. Handles light axial loads as well as radial loads |
|
| 7 | Single-Row Angular Contact Bearing Specific geometry of angular contact bearing raceways and shoulders creates ball contact angles that support higher axial loads |
|
| 8 | Axial Cylindrical Roller Bearing Axial cylindrical roller bearings comprise axial cylindrical roller and cage assemblies and shaft and housing locating washers. The bearings have particularly small axial section height, have high load carrying capacity and high rigidity and can support axial forces in one direction |
|
2.1.2 6(0)03
The second digit relates to the bearing series, which reflects the robustness of the bearing. As you go up the scale below from 9 to 4 the inner and outer race thickness will usually increase along with the ball size, this will be to help cope with extra load.
| # | Description |
|---|---|
| 8 | Extra thin section |
| 9 | Very thin section |
| 0 | Extra light |
| 1 | Extra light thrust |
| 2 | Light |
| 3 | Medium |
| 4 | Heavy |
2.1.3 60(03)
The 3rd and 4th digits of the bearing code relate to the bore size of the bearing. Numbers 00 to 03 have a designated bore size depending on the number, while numbers over 03 simply have a bore size which is 5 times that of the number
| # | Size (mm) |
|---|---|
| 00 | 10 |
| 01 | 12 |
| 02 | 15 |
| 03 | 17 |
| 04 | 20 |
| 05 | 25 |
| ... | |
| n | 5 x n |
2.2 Suffix
| Suffix | Description |
|---|---|
| 2 RS | Bearing with rubber seal on both sides. RS provides a better seal but more rolling friction than 2Z |
| RS | Bearing with rubber seal on one side, one side open |
| 2 Z / ZZ | Bearing with a metal seal on both sides |
| Z | Bearing with a metal seal on one side, one side open |
| E | Reinforced Design |
| P2 | Highest precision |
| K | Bearing with taper bore |
However, bearing companies may make up their own suffixes. For example, Nachi
Nachi Bearing Suffix Description 2NSE9 Contact rubber seals 2NKE9 Non-contact rubber seals