7005 CD/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 CD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
0.24 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4680 lbf
Radial static load rating
3510 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
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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7005 CD/P4ATBTB Bearing Product Overview & Core Advantages
The 7005 CD/P4ATBTB is a precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing excels at handling combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures ultra-precision operation, while the light preload (Class B) minimizes deflection under load, making it ideal for high-speed, high-rigidity spindles and other precision machinery.
7005 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7005 CD/P4ATBTB is decoded as follows:
- 7005: Standard bore diameter (25 mm) and series designation.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates a specific internal design and light preload (Class B).
- P4A: Specifies an ultra-precision tolerance class exceeding ABEC 7 standards for superior running accuracy.
- TBT: Identifies the bearing as part of a Triplex Back-to-Back matched set of three bearings, providing maximum rigidity and moment load capacity.
7005 CD/P4ATBTB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The triplex back-to-back (TBT) arrangement creates an exceptionally rigid bearing system that effectively resists moment loads and shaft deflection, crucial for maintaining precision in machining and positioning applications.
- Superior Load Capacity: With a dynamic load rating of 4680 lbf and a static load rating of 3510 lbf, this bearing is designed to handle significant combined radial and axial loads.
- Optimized High-Speed Performance: The 15° contact angle and phenolic resin cage contribute to low friction and temperature rise, enabling a high limiting speed of 56,000 rpm. The cage is lightweight and robust, ideal for rapid acceleration.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, ensuring predictable performance and ease of installation in precision assemblies.
- Material Quality: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life.
7005 CD/P4ATBTB Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arm actuators.
- Medical Equipment: Dental handpieces and laboratory automation instruments.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and optical aiming devices.
