7012 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7012 ACD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
1.21 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
54 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18720 lbf
Radial static load rating
22500 lbf
Limiting speed
39 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
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
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
7012 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7012 ACD/P4ATBTA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This triplex back-to-back (TBT) matched set is manufactured to P4A tolerance class, ensuring superior dimensional and running accuracy. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads—simultaneously, making it ideal for high-precision, high-rigidity spindles. The extra light preload (Class A) minimizes deflection under load, contributing to outstanding operational stability and positioning accuracy.
7012 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7012 ACD/P4ATBTA provides detailed technical specifications:
- 7012: Basic bearing series, with 60 mm bore, 95 mm OD, and 18 mm width.
- ACD: Angular Contact design with a 25° contact angle.
- P4A: Indicates a super-precision tolerance class for both dimensional and running accuracy.
- TB: Denotes a Back-to-Back arrangement in the matched set.
- T: Specifies the number of bearings in the Triplex (3-bearing) matched set.
- A: Indicates an Extra Light Preload applied to the set.
7012 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back (TBT) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined radial and axial loads from multiple directions. The 25° contact angle is optimized for high axial load capacity.
- Precision Performance: Manufactured to P4A super-precision tolerance with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and vibration for ultra-smooth operation.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and preload contribute to stable operation at high rotational speeds, with a limiting speed of 39,000 rpm.
- Material & Construction: Made from high-grade chrome steel for rings and balls, ensuring high durability and fatigue resistance. The open design allows for customized lubrication schemes to suit specific application needs.
7012 ACD/P4ATBTA Bearing Typical Application Areas
This precision bearing set is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme rigidity and accuracy.
- Precision Spindles: Applications in semiconductor manufacturing, PCB drilling, and optical lens grinding.
- High-Frequency Machining Centers: Where minimal thermal growth and consistent performance under heavy combined loads are critical.
- Robotic & Automation Systems: High-precision rotary joints and indexing tables.
