7212 CD/P4ATBTC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7212 CD/P4ATBTC
Basic Information
System of measurement
Metric
Weight
2.43 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
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
66 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
27900 lbf
Radial static load rating
31500 lbf
Limiting speed
32.5 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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 398.82
/ each
In Stock
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7212 CD/P4ATBTC Bearing Product Overview & Core Advantages
The 7212 CD/P4ATBTC is a precision angular contact ball bearing specifically designed for demanding applications requiring exceptional rigidity and accuracy. This matched triplex set in a back-to-back arrangement (TBT) delivers superior performance in handling combined loads (radial and axial) simultaneously. Manufactured to P4A tolerance class, it offers high running accuracy and is preloaded to Moderate / Class C for optimal stiffness and minimal deflection under operational stresses. Its phenolic cage and chrome steel construction contribute to its high-speed capability and durability, making it ideal for high-precision, high-reliability machinery.
7212 CD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7212 CD/P4ATBTC provides detailed technical specifications through its suffixes:
- 7212: Basic bearing designation (60mm bore, 110mm OD, Metric series)
- C: Denotes a 15° contact angle, optimized for handling combined loads.
- D: Indicates the bearing is supplied as part of a matched set.
- P4A: Specifies the tolerance class, indicating very high precision levels for dimensional and running accuracy.
- TBT: Defines the matched arrangement as Triplex Back-to-Back. This configuration provides high moment rigidity and stability.
- C (in preload context): Specifies a Moderate preload (Class C) for enhanced system stiffness.
7212 CD/P4ATBTC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The triplex back-to-back (TBT) arrangement of three bearings creates an exceptionally stiff bearing system, effectively resisting moment loads and shaft deflection.
- Superior Load Capacity: The 15° contact angle and multi-bearing setup enable high radial dynamic load rating (27,900 lbf) and static load rating (31,500 lbf), efficiently managing combined loads.
- High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, allowing for a high limiting speed of 32,500 rpm. The open design facilitates efficient lubrication management.
- Precision Operation: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring smooth, quiet, and accurate rotation essential for precision applications.
- Durable Construction: Components made from chrome steel provide high hardness, wear resistance, and a long operational life under demanding conditions.
7212 CD/P4ATBTC 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 requiring utmost accuracy and rigidity.
- Precision Gearboxes: Applications where low noise, high speed, and minimal axial/radial play are critical.
- High-Frequency Motors and Spindles
- Industrial Pumps and Compressors operating at high rotational speeds.
- Aerospace and Defense Actuation Systems
