6305-2ZNR
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6305-2ZNR Bearing Product Overview & Core Advantages
The 6305-2ZNR is a single row deep groove ball bearing engineered for exceptional reliability in demanding applications. This shielded bearing is pre-lubricated with grease, offering long-term, maintenance-free operation. A key distinguishing feature is the snap ring groove on its outer ring, which simplifies axial location and secure mounting within a housing, reducing assembly time and cost. Its design provides robust radial load capacity and is optimized for high-speed operation, making it an ideal, cost-effective solution for a wide range of industrial machinery.
6305-2ZNR Bearing Model Code Explained, Specifications & Naming Convention
- 6305: Standard designation for a single row deep groove ball bearing with a 25mm bore and 62mm outside diameter.
- 2Z: Signifies that the bearing is fitted with non-contact shields on both sides. These shields retain lubricant and effectively exclude larger contaminants without significantly increasing friction.
- NR: Indicates that the outer ring features a snap ring groove. This allows for the use of a snap ring to axially locate the bearing, eliminating the need for complex housing shoulders and reducing design complexity.
6305-2ZNR Bearing Structural Features & Performance Benefits
Robust Construction for High Loads: Manufactured from chrome steel for both rings and balls, the 6305-2ZNR delivers high strength and durability, with a substantial dynamic load rating of 5261 lbf and a static load rating of 2608 lbf.
Optimized for Speed and Efficiency: The stainless steel cage ensures stable operation and guides the balls effectively, contributing to the bearing's high limiting speed of 13,000 rpm. The non-contact shields minimize friction, further supporting high-speed performance.
Sealed and Pre-Lubricated for Long Life: The 2Z shields protect against contamination while the factory-applied grease lubrication ensures immediate operation and long-term, maintenance-free service within a wide temperature range of -30°C to 120°C.
Simplified Assembly with Snap Ring: The integrated snap ring groove (NR) provides a secure and simple axial locating solution, enhancing mounting rigidity and reducing overall assembly costs.
6305-2ZNR Bearing Typical Application Areas
The 6305-2ZNR is widely used in applications requiring reliable, high-speed performance with simplified mounting. Key sectors include:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment (e.g., conveyor rollers)
- Agricultural Machinery
