Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of sealed super precision angular contact ball bearings 7214ac in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.
Sealed Super Precision Angular Contact Ball Bearings 7214ACTN-2RZSUP4
Specifications
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Bearing No. |
7214ACTN-2RZSUP4 |
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Dimension |
70*125*24mm |
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Lubrication |
Oil or grease |
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Weight |
1.1kg |
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- 100% plastic cage for higher resistance and durability. |
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- Our sealed super precision angular contact ball bearings are a top-quality product that offers exceptional performance, reliability, and durability. With its advanced features and superior engineering, it is designed to meet the needs of even the most demanding industrial applications. Trust us to provide you with the best spindle bearing solution for your business needs. |
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Features
Adopts 25° angular contact design to sustain integrated radial and single-direction axial loads
Nylon TN cage cuts friction loss and suppresses heat buildup at high RPM
Dual 2RZ rubber seals retain grease and shield internal components from contaminants
SU universal match design enables flexible paired assembly with adjustable preload for enhanced rigidity
P4 super precision class ensures ultra-stable rotation accuracy with tiny runout error
Superior load capacity withstands heavy machining loads without obvious deformation
Low vibration & quiet running performance, sustaining long-term precision operation
High speed limit ideal for high-precision CNC, grinding and engraving spindles
Robust wear resistance and stable thermal performance for prolonged service life
Applications
The 7214AC bearing is a single-row angular contact ball bearing capable of simultaneously withstanding radial and axial loads while operating at high speeds. Thanks to its high rigidity, smooth operation, and ability to handle combined loads, it is widely used in industrial equipment that demands high precision and high rotational speeds.
Its main applications include:
1. Machine Tools and Precision Processing Equipment
This is one of its most typical application areas. It is commonly used in machine tool spindles, CNC lathe spindles, precision grinding machines, drilling machines, and milling machines, ensuring high-speed and precise tool performance.
2. Plastic and Rubber Processing Machinery
It is suitable for plastic extruders, plastic drawing machines, and similar equipment, which typically require bearings with high load-bearing capacity and stability during operation.
3. Metallurgical and Heavy Industrial Equipment
It can be applied in steelmaking equipment, vibrating screens, construction machinery, and mining machinery, capable of coping with harsh industrial conditions.
4. Welding and Laboratory Equipment
It is suitable for wire bonding machines, AC welding machines, and laboratory mixing equipment.
5. Other General Industrial Equipment
It is also widely used in transmission devices, shearing machines, lifting equipment, electric mixers, paper cutters, eddy current pumps, air purification equipment, stainless steel reactors, pharmaceutical machinery, motors, fans, automotive, power, and railway industries.
Note: In practical applications, single-row 7214AC bearings are often installed in pairs (such as back-to-back DB, face-to-face DF, or tandem DT configurations) to meet the equipment's needs for bearing axial loads in both directions or improving system rigidity.
Advantages
HXB was founded in 1995, with nearly 30 years of dedicated development, HXB now operates6 subsidiaries.
∗ 2 high-tech R&D centers
∗ 2 modern manufacturing factories - Hangzhou Yijia Precision Bearing Co., Ltd. and Zhejiang Ruiyang Bearing Technology Co., Ltd.
∗ Supported by advanced digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
∗ High-end equipment and high-quality material
About HXB
1. Hangzhou Factory - YJB
Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.
Core Capabilities & Intelligent Manufacturing
- Product Size: Inner diameter Φ3–Φ300mm
- Precision Classes: P2, P4 (ultra-precision grades)
- Annual Capacity: 3 million sets of precision bearings in a lean & intelligent factory
Main Products
Precision Spindle Bearings
Angular Contact Ball Bearings
Servo Motor Bearings
Vacuum Pump Bearings
Ball Screw Support Bearings
2. Huzhou Factory
In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.
Product Range
Series: 6000–6024, 6200–6214, 6300–6314, 6800–6824, 6900–6924
Features: High rigidity, low noise; suitable for grease lubrication or oil-mist lubrication.
6 Series X4YA-2RS (Double-lip seal) & APT Retainer Series
Features: High & low temperature resistance, superior sealing, high load capacity, long service life.
Application: New energy vehicle transmission systems.
Certificates
FAQ
1. Can the 7214AC bearing withstand bidirectional axial forces?
A single-row 7214AC bearing can only bear axial load in one direction. If the equipment requires bidirectional axial load capacity or higher system rigidity, two 7214AC bearings are usually installed in pairs.
2. What are the common paired installation configurations for the 7214AC bearing?
There are three main configurations:
- DB (Back-to-Back): The wide faces are opposite each other, and the contact angles face outward. This combination offers high rigidity and strong resistance to overturning moments, making it the most common configuration for machine tool spindles.
- DF (Face-to-Face): The narrow faces are opposite each other, and the contact angles face inward. This configuration better accommodates misalignment, though its rigidity is slightly lower than that of the DB configuration.
- DT (Tandem): The contact angles face the same direction. This is primarily used in applications requiring high unidirectional axial thrust capacity.
3. What is the limiting speed of the 7214AC bearing?
The limiting speed depends on the lubrication method and the specific brand. Typically, the limiting speed for grease lubrication is around 4,900 to 6,100 r/min, while oil lubrication can achieve 6,100 to 7,600 r/min. Bearings with higher precision classes (e.g., P4, P2) have even higher upper speed limits.
4. In which fields is the 7214AC bearing mainly used?
This model is widely used in equipment that demands high precision and high speeds. Typical applications include CNC machine tool spindles, precision grinding machines, plastic extruders, high-frequency wire bonding machines, laboratory mixing equipment, and various industrial motors and fans.
5. What should be noted when installing the 7214AC bearing?
- Ensure absolute cleanliness of both the environment and the bearing before installation.
- If the inner ring has an interference fit, hot mounting is recommended (with the temperature strictly controlled between 80°C and 100°C). Never strike the rolling elements or the cage directly.
- When installed in pairs, appropriate preload must be applied via locknuts or shims. Excessive or insufficient preload will severely affect the bearing's service life and machining accuracy.
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