7020 CE/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 CE/P4ADGA
Basic Information
System of measurement
Metric
Weight
2.52 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
18000 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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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7020 CE/P4ADGA Bearing Product Overview & Core Advantages
The 7020 CE/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in pre-lubricated pairs, it excels at handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery where reliability and performance are critical.
7020 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 CE/P4ADGA provides detailed technical specifications through its suffixes:
- 7020: Basic designation indicating a 100mm bore, 150mm OD bearing.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial loads.
- E: Indicates an optimized internal design with increased ball complement and reinforced structure for higher load capacity.
- P4A: Specifies an ultra-precision tolerance class with enhanced dimensional and running accuracy requirements.
- DGA: Signifies that the bearing is universally matchable (SU) and supplied as a pre-loaded pair (2 bearings) in an Extra Light (A) preload configuration, ensuring immediate optimal stiffness and performance when mounted.
7020 CE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The E-type internal design incorporates a larger number of balls (27 balls) and a larger ball diameter (12.7 mm), significantly boosting both the radial dynamic load rating (16,380 lbf) and static load rating (18,000 lbf). The universal matching (SU) and preloaded pair arrangement provide immediate, high system rigidity without requiring complex adjustments during installation.
- High-Speed Performance: The combination of the 15° contact angle and the lightweight, durable phenolic resin cage enables stable operation at high rotational speeds, with a limiting speed of 20,000 rpm. The phenolic cage offers excellent strength-to-weight ratio and operates effectively within the specified temperature range (-30°C to 110°C).
- Precision and Longevity: Manufactured from chrome steel for both rings and balls, and held to P4A super-precision tolerances, this bearing ensures minimal vibration and extended service life in demanding applications. The bearings are pre-lubricated for immediate use.
7020 CE/P4ADGA Bearing Typical Application Areas
The 7020 CE/P4ADGA is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables and Indexing Heads.
- High-Frequency Motors and Spindle Drives.
- Medical Equipment such as dental handpieces and imaging scanners.
- Aerospace and Defense instrumentation and control systems.
