61903-2RS1/W64
618 & 619 Series Thin Section Bearings
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61903-2RS1/W64 Bearing Product Overview & Core Advantages
The 61903-2RS1/W64 is a miniature deep groove ball bearing designed for compact, high-precision applications. This sealed single row bearing excels in providing reliable performance under radial loads and moderate axial loads in both directions. Its key advantages include a solid oil lubrication system for maintenance-free operation, a compact cross-section for space-constrained designs, and compliance with ABEC 1 precision tolerances, making it an ideal choice for applications demanding high reliability and long service life.
Model Code Breakdown
- 61903: Basic series designation for a miniature deep groove ball bearing with a 17mm bore.
- 2RS1: Signifies the bearing is equipped with contact rubber seals on both sides, providing excellent protection against contamination and retaining lubricant.
- W64: Indicates the bearing is pre-lubricated with Solid Oil, a polymer matrix saturated with oil, offering superior lubrication retention, resistance to washout, and a wide operating temperature range.
61903-2RS1/W64 Bearing Structural Features & Performance Benefits
The single row deep groove ball bearing construction provides a robust and versatile solution. The contact rubber seals (2RS1) effectively shield the internal components from contaminants like dust and moisture, significantly extending bearing life in harsh environments. The integration of Solid Oil (W64) eliminates the need for re-lubrication, providing consistent performance and reducing maintenance costs. The chrome steel construction of rings, balls, and cage ensures high durability and a long operational lifespan. With a limiting speed of 32,000 rpm and a radial dynamic load rating of 1039 lbf, this bearing offers a reliable combination of high-speed capability and load-carrying capacity in a miniature package.
61903-2RS1/W64 Bearing Typical Application Areas
This bearing is ideally suited for applications requiring compact size, sealed construction, and maintenance-free operation. Key industries and equipment include:
- Small Electric Motors: Used in fans, pumps, and power tools.
- Precision Instruments: Suitable for medical devices, optical encoders, and measuring equipment.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Textile Machinery: Applied in spindles and other high-speed components.
