61811
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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61811 Bearing Product Overview & Core Advantages
The 61811 metric ball bearing is a single row deep groove ball bearing designed for exceptional performance in applications requiring high precision and reliability. Engineered to primarily accommodate radial loads, its compact design with a minimal cross-section makes it ideal for space-constrained assemblies. Manufactured to a P6 tolerance class, this bearing offers superior running accuracy, ensuring smooth operation and extended service life in demanding environments.
61811 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 61811 | Standard designation for a metric, single row deep groove ball bearing with a 55mm bore, 72mm OD, and 9mm width. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and facilitating custom lubrication solutions. |
| P6 (Tolerance Class) | Indicates tighter dimensional and running accuracy tolerances compared to standard (P0) bearings, suitable for precision applications. |
| CN (Radial Clearance) | Specifies the standard (normal) group of radial internal clearance. |
61811 Bearing Structural Features & Performance Benefits
The performance of the 61811 bearing is defined by its robust construction and high-quality materials. The single row deep groove raceway geometry is optimized for efficient radial load carrying capacity, with a dynamic load rating of 2032 lbf and a static load rating of 1978 lbf. The stainless steel cage ensures durability and stable operation, contributing to a high limiting speed of 12,000 rpm. All components are manufactured from chrome steel, providing excellent hardness and wear resistance. The open design and precise P6 tolerance result in low friction and minimal heat generation, which is critical for high-speed performance.
61811 Bearing Typical Application Areas
This precision bearing is widely used in applications where space is limited and high rotational accuracy is required. Common industries and equipment include:
- Electric Motors and Generators
- Precision Gearboxes
- Medical and Dental Equipment
- Office Automation Machinery
- Small Precision Instruments
