7007 ACD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7007 ACD/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.31 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5445 lbf
Radial static load rating
4050 lbf
Limiting speed
56 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7007 ACD/P4ADBB Bearing Product Overview & Core Advantages
The 7007 ACD/P4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Light / Class B specifications, ensuring optimal stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high precision, making it ideal for high-speed spindles and other critical machinery where high rigidity and positional accuracy are paramount.
7007 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7007 ACD/P4ADBB is decoded as follows:
- 7007: Standard bearing series designation (35mm bore, 62mm OD).
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a Duplex (two-bearing) set.
- DB: Specifies the Back-to-Back mounting arrangement.
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7, with specific focus on runout and dimensional accuracy.
7007 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex configuration creates a wide, rigid support system that effectively resists moment loads and maintains shaft positioning under combined loads.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal vibration and exceptional running accuracy, which is critical for high-speed applications.
- Optimized for High Speeds: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 56,000 rpm. The standard lubrication further supports smooth high-speed operation.
- Durable Construction: Made from chrome steel for both rings and balls, the bearing offers high load capacity and long service life. The dynamic load rating is 5445 lbf and the static load rating is 4050 lbf.
7007 ACD/P4ADBB Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Medical Equipment such as dental handpieces and imaging device rotors.
- Aerospace Actuators and other systems requiring reliable, high-precision rotary motion.
