7003 CEGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 CEGC/P4A
Basic Information
System of measurement
Metric
Weight
0.035 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1316 lbf
Radial static load rating
574 lbf
Limiting speed
115 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7003 CEGC/P4A Bearing Product Overview & Core Advantages
The 7003 CEGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single bearing that is Universal Matchable (SU), it can be precisely paired with a second identical bearing to form a preloaded duplex set, significantly enhancing system stiffness and rotational accuracy. Its key advantages include the ability to accommodate combined loads (simultaneous radial and axial loads), superior running accuracy from its P4A tolerance class, and high-speed capability facilitated by its phenolic cage and optimized internal design.
7003 CEGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic series designation, indicating a metric, 17mm bore, 35mm OD, 10mm width angular contact bearing. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring moderate axial load capacity. |
| E | Indicates an optimized internal design, often featuring a larger ball complement and reinforced shoulders for increased load capacity. |
| GC | Specifies the preload group: Moderate Preload (Class C). This pre-set internal clearance provides high rigidity and precise shaft positioning. |
| P4A | Denotes an ABEC 7 / ISO P4 tolerance class with additional dimensional and running accuracy requirements, ensuring superior performance in precision applications. |
7003 CEGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The Moderate Preload (GC) eliminates internal clearance, resulting in exceptional shaft rigidity and minimal runout, which is critical for high-precision machining and positioning.
- Superior Load Capacity: The optimized "E"-type internal design with a larger ball diameter and quantity (12 balls of 5.556mm) provides high dynamic and static load ratings, enabling reliable operation under demanding combined loads.
- High-Speed Performance: The lightweight and robust phenolic cage ensures stable operation and low friction at high rotational speeds, with a limiting speed of 115,000 rpm. The 15° contact angle further contributes to low heat generation at high RPMs.
- Universal Matching Capability (SU): This bearing is manufactured to universal matching standards, allowing any two 7003 CEGC/P4A bearings to be paired in a duplex arrangement (e.g., DB, DF, DT) without selective matching, simplifying inventory and assembly for high-rigidity bearing sets.
7003 CEGC/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Robotic Drives: In robot arm joints and gearboxes where high positional repeatability is essential.
- High-Frequency Spindles: Used in PCB drilling, dental handpieces, and small tool spindles.
- Optical and Measurement Equipment: In rotary encoders, scanners, and coordinate measuring machines (CMM) for precise motion control.
