| Customization: | Available |
|---|---|
| Contact Angle: | 15° |
| Aligning: | Aligning Bearing |
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| Model | Bore Diameter (mm) | Outer Diameter (mm) | Width (mm) | Weight (kg) |
|---|---|---|---|---|
| 7200 | 10 | 30 | 9 | 0.03 |
| 7201 | 12 | 32 | 10 | 0.04 |
| 7202 | 15 | 35 | 11 | 0.05 |
| 7203 | 17 | 40 | 12 | 0.07 |
| 7204 | 20 | 47 | 14 | 0.11 |
| 7205 | 25 | 52 | 15 | 0.14 |
| 7206 | 30 | 62 | 16 | 0.20 |
| 7207 | 35 | 72 | 17 | 0.29 |
| 7208 | 40 | 80 | 18 | 0.37 |
| 7209 | 45 | 85 | 19 | 0.43 |
| 7210 | 50 | 90 | 20 | 0.50 |
| 7211 | 55 | 100 | 21 | 0.65 |
| 7212 | 60 | 110 | 22 | 0.85 |
| 7213 | 65 | 120 | 23 | 1.05 |
| 7214 | 70 | 125 | 24 | 1.15 |
| 7215 | 75 | 130 | 25 | 1.25 |
| 7216 | 80 | 140 | 26 | 1.50 |
| 7217 | 85 | 150 | 28 | 1.85 |
| 7218 | 90 | 160 | 30 | 2.20 |
| 7219 | 95 | 170 | 32 | 2.65 |
| 7220 | 100 | 180 | 34 | 3.10 |
| 7221 | 105 | 190 | 36 | 3.65 |
| 7222 | 110 | 200 | 38 | 4.20 |
| 7224 | 120 | 215 | 40 | 5.00 |
| 7226 | 130 | 230 | 40 | 5.50 |
| 7228 | 140 | 250 | 42 | 6.50 |
| 7230 | 150 | 270 | 45 | 8.00 |
| Suffix | Meaning |
|---|---|
| C | Contact angle of 15°, suitable for moderate axial loads and high speeds. |
| AC | Contact angle of 25°, suitable for higher axial loads. |
| B | Contact angle of 40°, suitable for high axial loads and lower speeds. |
| E | Optimized internal design for higher load capacity and rigidity. |
| P4 | High precision grade, suitable for high-precision applications (e.g., machine tool spindles). |
| P5 | Higher precision grade, suitable for precision machinery. |
| P6 | Medium precision grade, suitable for general precision applications. |
| P0 | Normal precision grade (default), suitable for general applications. |
| DB | Back-to-back paired mounting, suitable for bidirectional axial loads or overturning moments. |
| DF | Face-to-face paired mounting, suitable for bidirectional axial loads. |
| DT | Tandem paired mounting, suitable for unidirectional axial loads. |
| S | Outer ring with lubrication groove and holes for easy lubrication. |
| 2RS | Double-sided contact rubber seals for dust and oil protection. |
| RS | Single-sided contact rubber seal for dust and oil protection. |
| 2Z | Double-sided non-contact metal shields for dust protection (not fully oil-proof). |
| Z | Single-sided non-contact metal shield for dust protection (not fully oil-proof). |
| N | Outer ring with snap ring groove for axial positioning. |
| NR | Outer ring with snap ring groove and snap ring for axial positioning. |
| M | Brass cage, suitable for high-speed and high-load applications. |
| MA | Brass cage, outer ring guided. |
| MB | Brass cage, inner ring guided. |
| TN | Engineering plastic cage (e.g., nylon), suitable for high-speed and low-friction applications. |
| TN9 | Glass fiber reinforced nylon cage, suitable for high-temperature and high-speed applications. |
| J | Pressed steel cage, suitable for general applications. |
| W | Outer ring outer surface with lubrication groove for easy lubrication. |
| C3 | Radial clearance greater than normal group, suitable for high-temperature or high-speed applications. |
| C4 | Radial clearance greater than C3 group, suitable for higher temperature or higher speed applications. |
| C5 | Radial clearance greater than C4 group, suitable for extremely high temperature or speed applications. |
Structure:
Angular contact ball bearings consist of an inner ring, outer ring, rolling elements (steel balls), and a cage.
The raceways of the inner and outer rings are designed at a specific angle (contact angle), enabling the bearing to withstand both axial and radial loads.
The contact angle is typically 15°, 25°, 30°, or 40°. A larger contact angle provides greater axial load capacity.
Features:
High-speed capability: The compact design and low friction make angular contact ball bearings suitable for high-speed operation.
High precision: Commonly used in precision machinery, such as machine tool spindles and robotics.
Combined load capacity: Can withstand both radial and axial loads simultaneously.
Paired use: Can be mounted in pairs (back-to-back, face-to-face, or tandem) to handle bidirectional axial loads or higher radial loads.
Based on design and application requirements, angular contact ball bearings can be categorized into the following types:
Single-row angular contact ball bearings:
Can only withstand unidirectional axial loads.
Typically require paired installation to handle bidirectional loads.
Double-row angular contact ball bearings:
Equivalent to a combination of two single-row bearings, capable of withstanding bidirectional axial loads.
More compact design, suitable for applications with limited radial space.
Four-point contact ball bearings:
Can withstand bidirectional axial loads.
Ideal for applications with high axial loads and requiring high rigidity.
High-speed angular contact ball bearings:
Use ceramic balls or special cage designs, suitable for ultra-high-speed applications.
Angular contact ball bearings are widely used in the following fields:
Machine tools: Used in high-precision, high-speed components such as spindles and lead screws.
Automotive: Used in wheel hubs, gearboxes, and differentials.
Aerospace: Used in high-precision, high-reliability components such as engines and landing gear.
Robotics: Used in joints and rotating components.
Electric motors: Used in high-speed motors and generators.
Selection Considerations:
Choose the contact angle based on load direction: A larger contact angle is suitable for higher axial loads, while a smaller contact angle is better for higher radial loads.
Select the bearing type based on speed: High-speed applications require high-speed angular contact ball bearings or ceramic ball bearings.
Choose single-row or double-row bearings based on installation space.
Installation Notes:
Angular contact ball bearings are often installed in pairs to ensure bidirectional load capacity.
Pay attention to the bearing orientation during installation to ensure the load acts on the correct contact angle.
Use dedicated tools for installation to avoid direct hammering on the bearing.
Advantages:
High-speed capability.
High precision and rigidity.
Combined load capacity.
Compact design, saving space.
Limitations:
Single-row bearings can only withstand unidirectional axial loads.
Installation and adjustment are relatively complex, requiring expertise and specialized
Regularly inspect the lubrication condition to ensure sufficient and clean lubricant.
Avoid overloading or impact loads to prevent bearing damage.
For high-speed or high-temperature applications, choose high-temperature lubricants or special material bearings.
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