7202 ACD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7202 ACD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.086 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1440 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7202 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7202 ACD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair is preloaded to Moderate / Class C specifications, ensuring high system stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads from both directions—simultaneously, making it ideal for high-precision, high-speed spindles and machinery where positioning accuracy is critical.
7202 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and angular contact design. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a Duplex (two-bearing) set. |
| P4A | Specifies a high-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DB | Denotes the Back-to-Back mounting arrangement, which provides high moment rigidity. |
| C | Specifies the Moderate preload level for optimal stiffness and speed performance. |
7202 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, crucial for maintaining precision under heavy combined loads.
- Superior Precision: Manufactured to P4A tolerance class with a 25° contact angle, this bearing delivers exceptional running accuracy and low vibration levels, directly contributing to improved machining finish and positioning repeatability.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 95,000 rpm. The bearings are pre-lubricated for immediate operation.
- Durable Construction: Manufactured from high-grade chrome steel for both rings and balls, ensuring long service life and consistent performance under demanding conditions within a temperature range of -30°C to 110°C.
7202 ACD/P4ADBC Bearing Typical Application Areas
This precision duplex bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed CNC machining centers, grinding spindles, and milling heads.
- Precision Rotary Systems: Industrial robots, rotary tables, and indexing heads.
- High-Frequency Motors: Spindles for PCB drilling and high-speed electric motors.
- Medical and Laboratory Equipment: Centrifuges and precision instruments requiring smooth, accurate rotation.
