1215K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1215K
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
1.35 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.015mm to 0
Bore type
Taper 1:12
Outside diameter
130 mm
Outside diameter tolerance
-0.018mm to 0
Width
25 mm
Width tolerance
-0.15mm to 0
Chamfer dimension
1.5 mm
Inner Ring Dimensions
Shoulder diameter inner ring
93.05 mm
Outer Ring Dimensions
Shoulder diameter outer ring
114.2 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8775 lbf
Radial static load rating
3510 lbf
Limiting speed
6.7 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1215K Bearing Product Overview & Core Advantages
The 1215K is a metric double row angular contact ball bearing featuring a tapered bore design (1:12 ratio). This precision bearing is engineered to accommodate combined loads, simultaneously handling significant radial loads and moderate axial loads in both directions. Its compact double-row construction provides high rigidity and stable rotational accuracy, making it ideal for applications demanding high reliability and precise shaft positioning. The bearing comes pre-lubricated for immediate operation and is manufactured from high-grade chrome steel for extended service life.
1215K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1215 | Standard bearing series designation, indicating the bearing dimensions: 75mm bore, 130mm OD, 25mm width. |
| K | Denotes a tapered bore with a 1:12 ratio. This design allows for precise interference fit adjustment on a tapered shaft adapter for enhanced stability. |
1215K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and optimized raceway geometry provide superior high rigidity, enabling the bearing to support substantial radial dynamic load ratings of 8775 lbf and effectively manage combined loads.
- Tapered Bore Advantage: The 1:12 tapered bore facilitates a secure, interference fit when mounted with a sleeve or adapter. This eliminates internal clearance, increases system stiffness, and ensures precise shaft running accuracy.
- Optimized for Performance: The stainless steel cage ensures reliable guidance of the balls at the limiting speed of 6,700 rpm. The standard CN radial internal clearance is suitable for a wide range of industrial applications.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and providing immediate protection. The open seal type allows for re-lubrication if required by the application.
1215K Bearing Typical Application Areas
This bearing is commonly specified in machinery requiring robust and precise shaft support. Key applications include:
- Agricultural Machinery (e.g., tractor gearboxes, balers)
- Industrial Gearboxes and Transmissions
- Vibrating Screens and Conveyors
- Pump and Compressor Systems
- Heavy-duty industrial fans and blowers
