1305AK
1300 Series Self Aligning Ball Bearings
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Part No.
Part No.
1305AK
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.26 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.01mm to 0
Bore type
Taper 1:12
Outside diameter
62 mm
Outside diameter tolerance
-0.013mm to 0
Width
17 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
38 mm
Outer Ring Dimensions
Shoulder diameter outer ring
50.7 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
1215 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1305AK Bearing Product Overview & Core Advantages
The 1305AK is a metric double row angular contact ball bearing engineered for applications demanding high precision and rigidity. Featuring a 1:12 tapered bore for precise shaft mounting, this bearing excels at handling combined radial and axial loads simultaneously. Its compact double-row design provides superior stiffness and load capacity in a minimal space, making it ideal for high-reliability industrial machinery. The open construction and Nylon cage contribute to its excellent high-speed performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 1305 | Basic bearing designation indicating metric dimensions (25mm bore, 62mm OD) |
| A | 30° contact angle optimized for axial load capacity |
| K | 1:12 tapered bore for precise interference fit on tapered shafts |
1305AK Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides significantly higher stiffness and radial load rating (4275 lbf dynamic) compared to single row bearings, effectively handling combined loads.
- Precision Tapered Bore: The 1:12 tapered bore ensures secure mounting and accurate positioning on matching tapered shafts, minimizing runout and vibration.
- Optimized High-Speed Performance: The lightweight Nylon cage reduces centrifugal forces, enabling stable operation at limiting speeds up to 15,000 rpm.
- Superior Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and durability across the operating temperature range (-30° to 110°C).
- Standard Internal Clearance: CN radial internal clearance ensures optimal performance under normal operating conditions.
1305AK Bearing Typical Application Areas
- Machine Tool Spindles and precision machining centers
- Industrial Gearboxes and power transmission systems
- Pump and Compressor shafts requiring high rigidity
- Material Handling Equipment with combined loading conditions
- Agricultural Machinery and construction equipment
