6306-2ZN/C3 HT51
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6306-2ZN/C3 HT51 Bearing Product Overview & Core Advantages
The 6306-2ZN/C3 HT51 is a single row deep groove ball bearing engineered for exceptional performance in demanding applications. This metric bearing features shielded construction (2Z) on both sides, providing superior protection against contamination. Its C3 radial internal clearance makes it ideally suited for applications with thermal expansion or where interference fits are used. Manufactured from high-grade chrome steel throughout, it delivers reliable operation and long service life under substantial radial loads. The inclusion of a snap ring groove on the outer ring facilitates secure mounting and simplifies assembly in housings.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6306 | Basic bearing series, indicating a medium width series deep groove ball bearing with a 30mm bore. |
| 2Z | Bearing is shielded on both sides. This provides effective protection against solid contaminants while generating less friction than contact seals. |
| N | Signifies the presence of a snap ring groove on the outer ring for axial location. |
| C3 | Indicates a greater than normal radial internal clearance. This is critical for applications involving thermal expansion, heavy interference fits, or where lower operating temperatures are desired. |
| HT51 | Specifies a special high-temperature heat stabilization treatment. This allows the bearing to operate reliably in the stated temperature range of -30°C to 120°C without dimensional instability. |
6306-2ZN/C3 HT51 Bearing Structural Features & Performance Benefits
- Robust Shielded Design: The double-shielded (2Z) construction effectively excludes contaminants like dust and debris, enhancing bearing life in unclean environments. The non-contact nature of the shields minimizes friction, contributing to the high limiting speed of 9,600 rpm.
- Optimized for Thermal and Fit Conditions: The C3 radial clearance is a key performance feature. It accommodates dimensional changes from thermal expansion in the shaft or housing and compensates for tight interference fits, preventing premature failure due to excessive preload.
- Secure Mounting and High Rigidity: The snap ring groove (N) on the outer ring allows for simple and secure axial location within a housing, reducing assembly complexity and cost. The single-row deep groove raceway and chrome steel cage provide high rigidity and stable operation under dynamic and static radial loads.
- High-Temperature Capability: The HT51 heat stabilization ensures consistent performance and dimensional accuracy across the full operating temperature range, making it suitable for applications with elevated ambient or operational temperatures.
6306-2ZN/C3 HT51 Bearing Typical Application Areas
The 6306-2ZN/C3 HT51 is designed for a wide range of industrial machinery and equipment where reliability, high-speed capability, and resistance to operational challenges are paramount. Key sectors include:
- Electric Motors and Generators: Ideal for use as locating or non-locating bearings in standard and high-efficiency motors.
- Industrial Gearboxes and Transmissions: Provides reliable support for shafts under significant radial loads.
- Material Handling Equipment: Used in conveyor pulleys, rollers, and fans.
- Agricultural Machinery: Suitable for applications in tractors, combines, and other equipment exposed to dusty conditions.
- General Industrial Machinery: A versatile choice for pumps, blowers, and other machinery requiring a robust, shielded bearing with a snap ring for easy mounting.
