7215 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7215 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.04 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.009mm to 0
Width
25 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
17
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
13162 lbf
Limiting speed
18 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 837.3
/ each
In Stock
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7215 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7215 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, enabling it to handle combined radial and axial loads simultaneously with high stability. Manufactured to P4 (ABEC-7) tolerance class, it guarantees superior running accuracy. The use of ceramic balls and a phenolic cage contributes to its capabilities as a high-speed bearing, offering reduced friction, lower operating temperatures, and extended service life in precision machinery.
7215 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7215 ACD/HCP4A provides detailed technical specifications through its suffixes:
- 7215: Basic model number denoting a metric, single-row angular contact ball bearing with a 75 mm bore, 130 mm OD, and 25 mm width.
- ACD: Designates a 25° contact angle and that the bearing is supplied with a specific preload for high rigidity.
- HCP4A: A composite suffix indicating:
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4: Identifies the tolerance class (P4 / ABEC-7), ensuring ultra-precision.
- A: Confirms the 25° contact angle and that the bearing is separable.
7215 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and application of preload ensure minimal runout and exceptional positional accuracy, providing a stable and rigid shaft support system.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers friction and allows for a high limiting speed of 18,000 rpm.
- Enhanced Load Capacity: The 25° contact angle is optimized to efficiently support substantial combined loads (radial and axial). With a dynamic load rating of 15,502 lbf and a static load rating of 13,162 lbf, it offers reliable performance under heavy loads.
- Reduced Heat Generation & Long Life: Hybrid ceramic construction provides excellent wear resistance, electrical insulation, and the ability to operate with less lubrication, leading to increased service life and reliability in high-speed applications.
7215 ACD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance equipment where speed, accuracy, and rigidity are critical. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In arm joints and spindle drives requiring high positional accuracy.
- High-Frequency Motors and Spindles: Used in CNC machining and PCB drilling.
- Aerospace and Defense Systems: In gyroscopes, radar systems, and other precision instruments.
- Medical Equipment: For high-speed dental handpieces and imaging device rotors.
