6221 bearing
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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) |
| 6221 deep groove ball bearing | 6221 | 221 | 105 | 190 | 36 | 133 | 105 | 3200 | 4000 | 3.78 |
| 6221-Z deep groove ball bearing | 6221-Z | 60221 | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-ZZ deep groove ball bearing | 6221-ZZ | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-2RS deep groove ball bearing | 6221-2RS | 180221 | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 62210-RS deep groove ball bearing | 62210-RS | 160510 | 50 | 90 | 23 | — | — | — | — | 0.564 |
| 62210-2RS deep groove ball bearing | 62210-2RS | 180510 | 50 | 90 | 23 | — | — | — | — | 0.564 |
| 62211-RS deep groove ball bearing | 62211-RS | - | 55 | 100 | 25 | — | — | — | — | 0.81 |
| 62211-2RS deep groove ball bearing | 62211-2RS | 180511 | 55 | 100 | 25 | — | — | — | — | 0.81 |
| 62212-RS deep groove ball bearing | 62212-RS | - | 60 | 110 | 28 | — | — | — | — | 0.965 |
| 62212-2RS deep groove ball bearing | 62212-2RS | 180512 | 60 | 110 | 28 | — | — | — | — | 0.965 |
| 62213-RS deep groove ball bearing | 62213-RS | - | 65 | 120 | 31 | — | — | — | — | 1.28 |
| 62213-2RS deep groove ball bearing | 62213-2RS | 180513 | 65 | 120 | 31 | — | — | — | — | 1.28 |
| 62214-RS deep groove ball bearing | 62214-RS | - | 70 | 125 | 24 | — | — | — | — | 1.07 |
| 6221/Z2 deep groove ball bearing | 6221/Z2 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221/Z3 deep groove ball bearing | 6221/Z3 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-Z/Z2 deep groove ball bearing | 6221-Z/Z2 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-Z/Z3 deep groove ball bearing | 6221-Z/Z3 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-2Z deep groove ball bearing | 6221-2Z | 80221 | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-2Z/Z2 deep groove ball bearing | 6221-2Z/Z2 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
| 6221-2Z/Z3 deep groove ball bearing | 6221-2Z/Z3 | - | 105 | 190 | 36 | — | — | — | — | 3.66 |
The 6221 bearing is a specific type of deep groove ball bearing. It belongs to the 62 series of bearings, which are commonly used in various applications that require high-speed operation and moderate radial loads. Here's an overview of the 6221 bearing:
1. Design and Construction:
- The 6221 bearing is designed as a single-row, deep groove ball bearing.
- It consists of an inner ring, an outer ring, a cage that separates and retains the rolling elements, and the rolling elements themselves, which are typically steel balls.
- The inner and outer rings are usually made of high-quality bearing steel to provide strength and durability.
2. Size and Dimensions:
- The designation "6221" indicates the specific size and dimensions of the bearing.
- The "62" in the designation signifies that it belongs to the 62 series of bearings, which have a relatively deep groove and can accommodate moderate radial loads.
- The "21" indicates the bore diameter of the bearing, which is 21 millimeters.
3. Load Capacity and Performance:
- The 6221 bearing is designed to handle moderate radial loads, such as those encountered in electric motors, pumps, fans, and other machinery.
- It can also tolerate some axial loads in both directions.
- Deep groove ball bearings, including the 6221 bearing, are known for their low friction and high-speed capabilities.
4. Applications:
- The 6221 bearing is commonly utilized in various industries and applications, including electric motors, generators, pumps, fans, conveyors, and general machinery.
- Its versatility and ability to handle moderate loads make it suitable for a wide range of rotating equipment.
5. Lubrication:
- Like most ball bearings, the 6221 bearing requires proper lubrication to reduce friction and prevent premature wear.
- Lubrication also helps to dissipate heat generated during operation and protect against contamination.
- The choice of lubricant and the frequency of lubrication depend on the specific application and operating conditions.
