61905-2RS1/C3
618 & 619 Series Thin Section Bearings
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61905-2RS1/C3 Bearing Product Overview & Core Advantages
The 61905-2RS1/C3 is a metric single row deep groove ball bearing designed for high-performance applications requiring reliable operation under radial loads. Featuring integral contact seals (2RS1) for effective contamination exclusion and a C3 radial internal clearance for optimal performance in thermally expanding applications, this bearing offers a compact design with a 9mm width. Manufactured to ABEC 1 | ISO P0 tolerance standards, it delivers consistent precision and is ideal for applications demanding robust performance in a space-constrained envelope.
61905-2RS1/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 61905 | Basic series designation for a single row deep groove ball bearing with a 25mm bore and 42mm OD. | Defines the core bearing dimensions and type. |
| 2RS1 | Bearing is equipped with contact seals on both sides. | Provides superior protection against contaminants and retains lubricant, enhancing service life. |
| C3 | Specifies a greater than normal radial internal clearance. | Accommodates thermal expansion in applications with high operating temperatures or tight fits, preventing premature failure. |
61905-2RS1/C3 Bearing Structural Features & Performance Benefits
This bearing's performance is derived from its specific construction and material selection:
- Robust Construction & High Load Capacity: The single row deep groove raceway geometry is optimized to handle significant radial dynamic load ratings (1578 lbf), making it suitable for demanding operational conditions.
- Effective Sealing for Longevity: The 2RS1 double-contact seals are critical for excluding moisture, dust, and other particulates. This design preserves internal integrity and supports a maintenance-free operational lifecycle in contaminated environments.
- Optimized for Thermal Stability: The C3 radial clearance is a key feature for applications prone to thermal expansion, ensuring smooth operation and preventing binding under elevated temperatures (up to 120°C).
- Precision & Consistency: Manufactured from chrome steel for rings, balls, and cage, and conforming to ABEC 1 precision, this bearing guarantees reliable, low-noise, and low-vibration performance.
61905-2RS1/C3 Bearing Typical Application Areas
The 61905-2RS1/C3 is engineered for a wide range of industrial applications where reliability, compactness, and sealed performance are paramount. Key sectors include:
- Electric Motors & Gearboxes: Used in small to medium-sized motors requiring sealed, maintenance-free operation.
- Industrial Fans & Blowers: Ideal for supporting shafts in ventilation and air movement equipment.
- Material Handling Equipment: Found in conveyor rollers, pulleys, and other machinery components.
- Agricultural Machinery: Suitable for various implements where protection from dirt and moisture is essential.
- Automotive Auxiliary Units: Applicable in components like idlers, tensioners, and small pumps.
