6305-2RS INR/C3 HT51
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
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6305-2RS INR/C3 HT51 Bearing Product Overview & Core Advantages
The 6305-2RS INR/C3 HT51 is a single row deep groove ball bearing designed for exceptional reliability and performance in demanding applications. Its core strength lies in its ability to efficiently handle radial loads while offering robust construction and long service life. A key feature is the inclusion of integrated snap ring (INR) on the outer ring, which facilitates simplified axial location within a housing. This bearing is sealed (2RS) on both sides to effectively retain lubrication and exclude contaminants, and it features a C3 radial internal clearance for stable operation under thermal expansion or heavy load conditions. The HT51 suffix indicates a specialized heat treatment for dimensional stability at elevated temperatures, making it suitable for a wide operating range.
6305-2RS INR/C3 HT51 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 6305 | Standard designation for a single row deep groove ball bearing with a 25mm bore and 62mm OD. | Defines the fundamental bearing dimensions and type. |
| 2RS | Contact rubber seals on both sides of the bearing. | Provides excellent protection against contamination and retains lubricant, enhancing bearing life and enabling maintenance-free operation. |
| INR | Snap ring groove and snap ring fitted to the outer ring. | Simplifies axial location and securing of the bearing within the housing, reducing assembly complexity and cost. |
| C3 | Radial internal clearance greater than normal (C0). | Accommodates thermal expansion and ensures stable operation under heavy loads or where temperature differentials exist. |
| HT51 | Special heat stabilization treatment. | Ensures dimensional stability at high operating temperatures (up to 120°C), preventing loss of preload or clearance. |
6305-2RS INR/C3 HT51 Bearing Structural Features & Performance Benefits
Robust Deep Groove Design: The single row, deep groove raceway is optimized for high radial load capacity, making it a versatile choice for a wide array of applications.
Integrated Sealing & Snap Ring: The combination of 2RS seals and an INR snap ring delivers a complete, pre-assembled solution. This design protects the bearing's interior from dust, moisture, and other contaminants while simultaneously simplifying installation and securing in the housing, leading to reduced assembly time and improved operational reliability.
Optimized Internal Clearance: The C3 clearance is specifically selected for applications involving significant thermal gradients or heavy loading, preventing excessive preload that could lead to premature failure and ensuring smooth, low-vibration operation.
High-Temperature Capability: The HT51 heat stabilization ensures that the bearing maintains its geometric accuracy and pre-set internal clearance even when subjected to continuous high-temperature environments, a critical factor for long-term performance and reliability.
6305-2RS INR/C3 HT51 Bearing Typical Application Areas
The 6305-2RS INR/C3 HT51 is engineered for demanding industrial environments. Its sealed, snap-ring-equipped, and thermally stable design makes it an ideal choice for:
- Electric Motors & Generators: Particularly in end-shield applications where simplified location and contamination protection are paramount.
- Gearboxes & Power Transmission Systems: Where heavy radial loads and thermal expansion are common.
- Material Handling Equipment: Such as conveyor pulleys and rollers that require robust, maintenance-free bearing solutions.
- Agricultural & Construction Machinery: For components operating in harsh, dusty environments.
- Industrial Pumps & Fans: Where a combination of radial loads, moderate speeds, and environmental sealing is required.
