71828 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71828 CD/P4
Basic Information
System of measurement
Metric
Weight
0.8 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
140 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
175 mm
Outside diameter tolerance
-0.01mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
35
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
10102 lbf
Radial static load rating
13950 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 2082.46
/ each
In Stock
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71828 CD/P4 Bearing Product Overview & Core Advantages
The 71828 CD/P4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate combined loads (radial and axial loads in one direction), this bearing features a 15° contact angle and is supplied with P4 (ABEC-7) precision tolerance. Its compact design, with a width of just 18 mm, makes it ideal for space-constrained, high-speed spindles and other precision machinery where high rigidity and minimal runout are critical.
71828 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71828 | Basic bearing designation, defining the bearing dimensions (140 mm bore, 175 mm OD, 18 mm width). |
| CD | Indicates a specific contact angle of 15° and optimized internal design for high-speed operation and high rigidity. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7. This signifies extremely tight dimensional and running accuracy for precision applications. |
71828 CD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 15° contact angle provide high rigidity, enabling the bearing to effectively support combined radial and axial loads. With a dynamic load rating of 10,102 lbf and a static load rating of 13,950 lbf, it offers reliable performance under demanding conditions.
- High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation at high speeds, with a limiting speed of 10,000 rpm. The optimized internal geometry further enhances high-speed capability.
- Precision Engineering: Manufactured to P4 precision class, this bearing guarantees minimal runout and vibration, which is essential for applications requiring high rotational accuracy.
- Durable Construction: Components made from chrome steel provide high wear resistance and long service life. The bearing is pre-lubricated for immediate use.
71828 CD/P4 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes
- High-Frequency Motors
- Medical Equipment (e.g., dental handpieces, imaging devices)
- Aerospace Actuators and Control Systems
