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| Bearings Name | New Model | Old Model: | ID(mm) | OD(mm) | Width(mm) | Cr(kN) | Cor(kN) | Grease Lubrication Speed(r/min) | Oil Lubrication Speed(r/min) | Weight(kg) |
| 16003 deep groove ball bearing | 16003 | 7000103 | 17 | 35 | 8 | 6.00 | 3.3 | 18000 | 22000 | 0.032 |
| 6003 deep groove ball bearing | 6003 | 103 | 17 | 35 | 10 | 6.00 | 3.25 | 17000 | 21000 | 0.040 |
| 6003-Z deep groove ball bearing | 6003-Z | 60103 | 17 | 35 | 10 | 6.00 | 3.25 | 17000 | 21000 | 0.040 |
| 6003-2Z deep groove ball bearing | 6003-2Z | 80103 | 17 | 35 | 10 | 6.00 | 3.25 | 17000 | 21000 | 0.040 |
| 6003N deep groove ball bearing | 6003N | 50103 | 17 | 35 | 10 | 6.0 | 3.25 | 17000 | 21000 | 0.040 |
| 6003-ZN deep groove ball bearing | 6003-ZN | 150103 | 17 | 35 | 10 | 6.0 | 3.25 | 17000 | 21000 | 0.040 |
| 6003-E deep groove ball bearing | 6003-E | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-Deep Groove Ball Bearing | 6003- | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003/22 deep groove ball bearing | 6003/22 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003/Z3 deep groove ball bearing | 6003/Z3 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-Z/Z2 deep groove ball bearing | 6003-Z/Z2 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-Z/Z3 deep groove ball bearing | 6003-Z/Z3 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-2Z/2Z deep groove ball bearing | 6003-2Z/2Z | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-2Z3 deep groove ball bearing | 6003-2Z3 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-RS deep groove ball bearing | 6003-RS | 160103 | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-RS/Z2 deep groove ball bearing | 6003-RS/Z2 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-RS/Z3 deep groove ball bearing | 6003-RS/Z3 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-2RS deep groove ball bearing | 6003-2RS | 180103 | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-2RS/Z2 deep groove ball bearing | 6003-2RS/Z2 | - | 17 | 35 | 10 | — | — | — | — | 0.0359 |
| 6003-2RS/Z3 deep groove ball bearing | 6003-2RS/Z3 | 180103Z3 | 17 | 35 | 10 | — | — | — | — | 0.0359 |
The designation 6003 refers to a specific type of deep groove ball bearing. Here’s a detailed breakdown of what this designation means: