1218-K C/4
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1218-K C/4
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
2.5 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.02mm to 0
Bore type
Taper 1:12
Outside diameter
160 mm
Outside diameter tolerance
-0.025mm to 0
Width
30 mm
Width tolerance
-0.2mm to 0
Chamfer dimension
2 mm
Inner Ring Dimensions
Shoulder diameter inner ring
112.5 mm
Outer Ring Dimensions
Shoulder diameter outer ring
138.7 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
5310 lbf
Limiting speed
5.3 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
No drawings available at the moment, will be launched soon
Price:
$ 159.38
/ each
In Stock
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1218-K C/4 Bearing Product Overview & Core Advantages
The 1218-K C/4 is a metric double row angular contact ball bearing designed for applications requiring exceptional rigidity and precise operation. Featuring a 1:12 tapered bore for secure shaft mounting, this precision bearing excels at handling significant radial loads. Its double row construction provides a compact, high-capacity solution, making it ideal for machinery where space constraints and high rigidity are critical. The bearing comes pre-lubricated and is manufactured from high-grade chrome steel for durability and reliable performance.
1218-K C/4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| K | Indicates a tapered bore with a 1:12 ratio, designed for precise mounting on adapter sleeves or withdrawal sleeves. |
| C/4 | Specifies the radial internal clearance group. C/4 corresponds to a CN clearance, which is a normal clearance group suitable for most common operating conditions. |
1218-K C/4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior rigidity and enables the bearing to support substantial radial loads, making it highly stable under demanding conditions.
- Precision Tapered Bore: The 1:12 tapered bore ensures a tight, interference fit on the shaft when used with an adapter sleeve, eliminating creep and enhancing rotational accuracy.
- Optimized Material Selection: The combination of a chrome steel ring and ball construction with a stainless steel cage offers excellent wear resistance and corrosion protection, contributing to a long service life.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and providing immediate operational readiness.
1218-K C/4 Bearing Typical Application Areas
This bearing is engineered for robust industrial environments. Key applications include:
- Industrial Gearboxes and power transmission systems
- Material Handling Equipment such as conveyor pulleys
- Agricultural Machinery
- Vibrating Screens and other heavy-duty machinery
