1212KC3
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1212KC3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.9 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.015mm to 0
Bore type
Taper 1:12
Outside diameter
110 mm
Outside diameter tolerance
-0.015mm to 0
Width
22 mm
Width tolerance
-0.15mm to 0
Chamfer dimension
1.5 mm
Inner Ring Dimensions
Shoulder diameter inner ring
78 mm
Outer Ring Dimensions
Shoulder diameter outer ring
95.6 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7020 lbf
Radial static load rating
2745 lbf
Limiting speed
8 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
C3
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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1212KC3 Bearing Product Overview & Core Advantages
The 1212KC3 is a metric double row angular contact ball bearing engineered for applications requiring high radial load capacity and precise operation. Featuring a 1:12 tapered bore for secure shaft mounting, this bearing delivers exceptional rigidity and stability. Its open design, combined with a C3 radial internal clearance, makes it suitable for applications with thermal expansion or where higher operational clearances are beneficial. Pre-lubricated for immediate use, it offers reliable performance in a compact envelope, making it an ideal choice for demanding industrial machinery.
1212KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1212 | Standard bearing series designation indicating core dimensions (60mm bore, 110mm OD). |
| K | Denotes a tapered bore with a 1:12 ratio for precise interference fit on adapter sleeves or tapered shafts. |
| C3 | Specifies a greater radial internal clearance than normal (C0), suitable for applications with expected thermal expansion or where shaft fits may reduce operational clearance. |
1212KC3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides superior radial stiffness and enables the bearing to support significant radial loads (Dynamic: 7020 lbf, Static: 2745 lbf), ensuring stable operation under demanding conditions.
- Tapered Bore Design: The 1:12 tapered bore allows for precise axial positioning and a secure fit on the shaft, eliminating slippage and enhancing overall system rigidity.
- Optimized for Operational Conditions: The C3 clearance accommodates thermal expansion and interference fits, preventing preload and ensuring smooth running. The nylon cage contributes to quiet operation and is suitable for the specified limiting speed of 8,000 rpm.
- Ready-to-Use & Durable: Pre-lubricated and constructed from chrome steel for both rings and balls, this bearing offers long service life and is compliant with RoHS and REACH environmental standards.
1212KC3 Bearing Typical Application Areas
This bearing is commonly specified in:
- Industrial Gearboxes and Transmissions
- Material Handling Conveyor Systems
- Agricultural Machinery
- Vibrating Screens and Shakers
- Pump and Fan Units
