7209 ACD/HCP4ATBTB
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7209 ACD/HCP4ATBTB
Basic Information
System of measurement
Metric
Weight
1.02 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
57 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
19890 lbf
Radial static load rating
20250 lbf
Limiting speed
41 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7209 ACD/HCP4ATBTB Bearing Product Overview & Core Advantages
The 7209 ACD/HCP4ATBTB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and speed capabilities. This triplex back-to-back (TBT) matched set configuration provides superior stiffness and stability under complex loading conditions. Engineered with a P4A tolerance class and ceramic balls, it delivers outstanding rotational accuracy and is ideally suited for high-reliability, high-performance machinery where combined radial and axial loads are present.
7209 ACD/HCP4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7209 ACD/HCP4ATBTB breaks down as follows:
- 7209: Basic series designation for a 45mm bore, 85mm OD angular contact ball bearing.
- A: Denotes a 25° contact angle, optimized for higher axial load capacity.
- CD: Indicates a triplex back-to-back (TBT) matched set of three bearings.
- HC: Signifies the use of hybrid ceramic balls (Silicon Nitride).
- P4A: Specifies a super-precision tolerance class for exceptional running accuracy.
- TBT: Confirms the Triplex Back-to-Back mounting arrangement.
7209 ACD/HCP4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The triplex back-to-back (TBT) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, making it ideal for precision spindles.
- High-Speed Performance: The combination of a light phenolic resin cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 41,000 rpm.
- Superior Load Capacity: The 25° contact angle and robust design provide excellent capability to handle combined radial and axial loads simultaneously.
- Precision Operation: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for ultra-smooth operation in the most demanding applications.
- Pre-Lubricated: Comes lubricated from the factory for immediate installation and initial operation.
7209 ACD/HCP4ATBTB Bearing Typical Application Areas
This bearing is specifically engineered for high-end industrial equipment, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Spindles for PCB drilling and semiconductor manufacturing
- High-Frequency Motors and Electric Spindles
- Aerospace & Defense instrumentation and control systems
- Other applications requiring high rigidity, high speed, and superior precision
