K25008AR0
8mm Constant Section Bearings
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Part No.
Part No.
K25008AR0
Basic Information
Bearing type
Ball
System of measurement
Metric
Thin section bearings type
Reali-Slim mm Metric
Construction
Single Row
Weight
0.28 kg
Tolerance class
ABEC-1
ISO radial rating
2646 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
250 mm
Bore diameter tolerance
-0.036mm to 0
Outside diameter
266 mm
Outside diameter tolerance
-0.036mm to 0
Width
8 mm
Width tolerance
+.000 –.254mm
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
255.9 mm
Outer Ring Dimensions
Outer ring large-side face inner diameter
262.1 mm
Outer ring small-side face inner diameter
260.1 mm
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1978 lbf
Radial static load rating
6556 lbf
Axial static load rating
4947 lbf
Static load moment
18926 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 208.23
/ each
In Stock
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K25008AR0 Bearing Product Overview & Core Advantages
The K25008AR0 is a thin-section angular contact ball bearing designed for applications requiring high precision and space optimization. As part of the Reali-Slim mm Metric series, it features a single-row design with a 30° contact angle, enabling it to support significant combined loads—both radial and axial—simultaneously. Its compact cross-section, with a width of only 8 mm, makes it ideal for lightweight, high-rigidity assemblies in precision machinery. Manufactured to ABEC-1 tolerance standards and pre-lubricated, this bearing delivers reliable performance in demanding operational environments.
K25008AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| K | Indicates specific series or design features (e.g., metric thin-section series). |
| 25008 | Specifies bearing dimensions: 250 mm bore, 266 mm outside diameter, 8 mm width. |
| A | Denotes 30° contact angle for optimal axial load capacity. |
| R0 | Specifies standard radial internal clearance (0.0000 – 0.0005"). |
K25008AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row angular contact design with a 30° contact angle provides excellent resistance to combined loads, supporting radial loads up to 2646 lbf (ISO rating) and axial static loads of 4947 lbf.
- Precision Engineering: Manufactured from chrome steel for rings and balls, with a brass cage for stability, ensuring consistent performance under ABEC-1 precision tolerances.
- Space-Saving Design: With an ultra-thin 8 mm width and optimized cross-section, this bearing minimizes weight (0.28 kg) while maximizing load capacity in compact assemblies.
- Optimized Lubrication & Temperature Range: Pre-lubricated for immediate operation and capable of performing within a temperature range of -30°C to 110°C, ensuring reliability across various environments.
K25008AR0 Bearing Typical Application Areas
- Robotics & Automation: Rotary joints and articulated arms requiring high precision and compact design.
- Aerospace & Defense: Guidance systems, actuation mechanisms, and instrumentation where lightweight and high rigidity are critical.
- Medical Equipment: Imaging devices and surgical robots demanding smooth operation and minimal deflection.
- Industrial Machinery: Precision spindles, indexing tables, and other applications needing reliable angular contact bearing performance.
