1218K
1200 Series Self Aligning Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
1218K Bearing Product Overview & Core Advantages
The 1218K double row angular contact ball bearing is a precision bearing engineered for applications requiring high rigidity and the ability to support combined loads. Featuring a metric tapered bore (1:12 ratio), this bearing is designed to handle significant radial loads while maintaining dimensional stability. Its double row construction provides enhanced stiffness compared to single row designs, making it ideal for high-precision machinery where shaft positioning accuracy is critical. Manufactured from chrome steel with a stainless steel cage, it offers reliable performance within a temperature range of -30°C to 110°C.
1218K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1218 | Standard bearing designation indicating bearing dimensions: 90mm bore, 160mm OD, 30mm width |
| K | Tapered bore with 1:12 ratio, facilitating precise mounting and dismounting on tapered shaft seats |
1218K Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row angular contact configuration provides superior stiffness, effectively minimizing deflection under heavy radial loads and ensuring precise shaft alignment.
Enhanced Load Capacity: Engineered to handle substantial combined loads, this bearing's optimized internal geometry distributes stress evenly across both ball rows.
Precision Performance: With CN radial internal clearance and tight dimensional tolerances (bore: -0.02mm to 0), the bearing delivers consistent, accurate rotation suitable for precision applications.
Durability & Reliability: The stainless steel cage ensures stable operation at the limiting speed of 5,300 rpm, while chrome steel components provide excellent wear resistance and long service life.
1218K Bearing Typical Application Areas
- Machine Tool Spindles - Where high rigidity and precision are paramount
- Industrial Gearboxes - For supporting combined radial and axial loads
- Material Handling Equipment - In applications requiring robust load capacity
- Power Transmission Systems - Where tapered bore mounting simplifies installation
- Precision Industrial Machinery - Applications demanding tight tolerances and reliable performance
