7210 ACD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7210 ACD/P4ADFB
Basic Information
System of measurement
Metric
Weight
0.92 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
14738 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7210 ACD/P4ADFB Bearing Product Overview & Core Advantages
The 7210 ACD/P4ADFB is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. This duplex face-to-face (DF) matched set delivers superior performance under combined loads, effectively managing both radial and bidirectional axial forces. Manufactured to a P4A tolerance class, it guarantees extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery. The pre-lubricated design and light preload (Class B) ensure smooth operation from the outset, reducing vibration and enhancing system stability.
7210 ACD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7210 ACD/P4ADFB provides detailed technical specifications through its suffixes:
- 7210: Basic bearing series; 70mm Bore, 110mm OD, 20mm Width
- AC: Angular Contact design with a 25° contact angle
- D: Indicates a duplex (two-bearing) set
- P4A: Denotes a super-precision tolerance class for high-precision applications
- DF: Specifies the Duplex Face-to-Face mounting arrangement
- B: Indicates a Light Preload (Class B) for optimal rigidity and speed
7210 ACD/P4ADFB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement of two angular contact bearings creates a highly rigid bearing system capable of withstanding significant combined radial and axial loads from both directions.
- Precision Performance: Conforming to the P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Optimized High-Speed Operation: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling higher limiting speeds (up to 46,000 rpm). The standard 25° contact angle provides an excellent balance between radial load capacity and axial stiffness.
- Superior Material & Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. The set is pre-lubricated for immediate use and reliable operation within a temperature range of -30°C to 110°C.
7210 ACD/P4ADFB Bearing Typical Application Areas
The 7210 ACD/P4ADFB is engineered for high-performance applications where precision and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Industrial Pumps.
- High-Frequency Motors and Robotic Drives.
- Medical Equipment and Aerospace Actuators.
