61908-2RS1/C3GJN
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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61908-2RS1/C3GJN Bearing Product Overview & Core Advantages
The 61908-2RS1/C3GJN is a metric single row deep groove ball bearing designed for high reliability in demanding applications. This sealed bearing excels in handling primarily radial loads and offers a compact design with a 12 mm width. Manufactured to ABEC 1 | ISO P0 tolerance standards, it provides consistent performance and is pre-lubricated for immediate use, ensuring operational readiness and simplified installation.
61908-2RS1/C3GJN Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 61908 | Basic designation for a single row deep groove ball bearing with a 40 mm bore and 62 mm outside diameter. |
| 2RS1 | Indicates the bearing is fitted with two rubber contact seals (RS) on both sides. The "1" denotes a specific seal design, providing effective protection against contaminants and moisture retention. |
| C3 | Specifies a greater than normal radial internal clearance. This is beneficial for applications with thermal expansion or where interference fits are used. |
| GJN | Signifies the bearing is pre-lubricated with a specific polyurea grease. This grease offers stable performance within the specified temperature range and contributes to the bearing's long service life. |
61908-2RS1/C3GJN Bearing Structural Features & Performance Benefits
The performance of the 61908-2RS1/C3GJN is derived from its robust construction. The single row deep groove raceway is optimized for smooth operation under radial dynamic load ratings of 3102 lbf. The use of chrome steel for all critical components (rings, balls, cage) ensures high durability and resistance to wear. The two rubber contact seals (2RS1) are a key feature, providing a high degree of protection against dust and dirt ingress, making the bearing suitable for environments where contamination is a concern. The C3 radial clearance accommodates shaft expansion and press fits, reducing the risk of binding under operational temperatures. Combined with the pre-applied GJN grease, this bearing offers a maintenance-free solution, capable of operating at limiting speeds up to 14,000 rpm.
61908-2RS1/C3GJN Bearing Typical Application Areas
- Electric Motors and Small Appliance Motors
- Power Transmission Systems (e.g., gearboxes, pulleys)
- Industrial Fans and Blowers
- Conveyor Rollers and Idlers
- Agricultural Machinery
- Automotive Components (e.g., alternators, water pumps)
