6304 NR NSK Ball Bearing 20x52x15 with Snap Ring

Main Description

The 6304 NR NSK ball bearing 20x52x15 is a single-row deep groove bearing equipped with a snap ring groove and retaining ring, designed for precise axial positioning and efficient installation in industrial systems.

Within the ball bearings 63xx series, the 6304 NR model offers increased load capacity compared to lighter series such as 62xx, while adding functional advantages for mounting. The integrated groove and snap ring eliminate the need for additional axial locking components, simplifying assembly and improving system reliability.

Construction and Design

The 6304 NR NSK bearing is built as a deep groove ball bearing optimized for both radial and moderate axial loads.

Key design features:

• single-row deep groove geometry
• hardened bearing steel for extended service life
• precision-machined groove in the outer ring
• retaining ring included in the set
• steel cage ensuring stable operation

This design provides low friction, reduced vibration, and consistent performance even at high rotational speeds.

Industrial Applications

The 6304 NR NSK bearing is widely used in applications where both load capacity and axial positioning are critical.

Typical applications include:

• electric motors and industrial drives
• gearboxes and transmission systems
• pumps and compressors
• agricultural machinery
• production and conveyor systems

The snap ring allows quick and secure mounting in housings, making this bearing ideal for serial production and maintenance-friendly systems.

Technical Parameters

• type: deep groove ball bearing
• series: 63xx
• model: 6304 NR NSK
• inner diameter: 20 mm
• outer diameter: 52 mm
• width: 15 mm
• design: open
• additional feature: groove and retaining ring (NR)
• material: bearing steel
• cage: steel
• operating characteristics: high speed, low noise

Operational Advantages

Compared to standard 6304 bearings, the NR version offers:

• built-in axial locking solution
• faster and easier installation
• reduced need for additional components
• improved positioning accuracy
• high durability in continuous operation

This makes it a preferred solution in modern industrial environments focused on efficiency and reliability.

FAQ

Does 6304 NR NSK include a snap ring?
Yes, NR means the bearing has both a groove and a retaining ring included.

What is the difference between 6304 N and 6304 NR?
6304 N has only the groove, while 6304 NR includes both the groove and the snap ring.

Can the bearing be used without the snap ring?
Yes, but axial positioning functionality will be lost.

Is this bearing suitable for high-speed operation?
Yes, the deep groove design ensures low friction and high-speed capability.

Where is this bearing typically used?
In motors, gearboxes, pumps, and industrial machinery.