Part Number | 7218 CDGA/HCP4A |
System of Measurement | Metric |
Contact Angle | 15° |
Seal Type | Open |
Matched Arrangement | Available |
Preload | Extra light preload / Class A |
Number Of Bearings In Matched Set | 4 |
Universal Matching Bearing | Yes, back-to-back (<>), face-to-face (><) or tandem (>>) |
For Load Direction | Angular Contact |
Bore Dia | 90 mm |
Bore Dia Tolerance | -0.004mm to 0 |
Outer Dia | 160 mm |
Outer Dia Tolerance | -0.004mm to 0 |
Width | 30 mm |
Width Tolerance | -0.2mm to 0 |
Ring Material | Chrome Steel |
Balls Material | Silicon Nitride(Si3N4) |
Cage Material | Phenolic |
Dynamic Radial Load | 28575 lbf |
Lubrication | Lubricated |
Max Speed (X1000 rpm) | 17 |
Temperature Range | -86 to 230 °F |
Static Radial Load | 25200 lbf |
ABEC Rating | P4A |
Ball Dia | 22.225 mm |
Ball Qty | 16 |
Weight | 1.83 kg |

7218 CDGA/HCP4A
Design Features of 7218 CDGA/HCP4A Bearing
The design of 7218 CDGA/HCP4A Bearing is a culmination of advanced materials science, mechanical engineering, and precision manufacturing. 7218 CDGA/HCP4A bore dia is 90 mm. Its out dia is 160 mm. 7218 CDGA/HCP4A width is 30 mm. This bearing is integral in high-speed spindles, precision instruments, and applications where accuracy and speed are critical.
What Benefits Can 7218 CDGA/HCP4A Bearing Provide?
- High-Speed Capabilities: Optimized for high rotational speeds with minimal friction and heat generation.
- Exceptional Precision: Manufactured to ultra-precise tolerances, ensuring unparalleled accuracy in operation.
- Enhanced Rigidity and Stability: Offer superior axial and radial rigidity, maintaining stability under varying load conditions.
- Advanced Material Use: Constructed from high-grade materials for durability, wear resistance, and performance at high speeds and temperatures.
- Low Friction and Heat Dissipation: Designed to minimize internal friction, efficiently dissipating heat to prolong bearing life.
What Can 7218 CDGA/HCP4A Bearing Be Used for?
7218 CDGA/HCP4A Bearing is used in applications where high precision, speed, and reliability are paramount. Their typical uses include:
- Machine Tool Spindles: Essential in CNC machines and precision grinders, where they ensure high-speed, accurate tool performance.
- High-Speed Machinery: Used in equipment requiring high rotational speeds, such as drilling and milling machines.
- Aerospace Components: Crucial in aerospace applications for gyroscopes, actuators, and jet engine components due to their precision and stability.
- Medical Equipment: Employed in high-speed medical devices like dental drills and medical imaging equipment.
- Semiconductor Manufacturing: Used in semiconductor production equipment where precision and speed are crucial for accurate wafer processing.
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