Ball Bearing 6304 ZZ – Double Shielded Deep Groove Radial Bearing

Deep groove radial ball bearing 6304 ZZ is a standard single-row bearing with metal shields on both sides (ZZ) providing basic protection against dust and debris. It is designed to support radial loads in rotating machinery and is commonly used in electric motors, gearboxes, conveyor systems and general mechanical assemblies where moderate speeds and reduced maintenance are required.

Advantages

The double metal shields reduce ingress of contaminants while allowing low-friction rotation and no-contact protection compared with contact seals. The single-row deep groove geometry provides reliable radial load support and accommodates limited axial loads in both directions. Constructed to industry dimensional standards, this bearing is interchangeable with common replacements and suitable for refurbishment or new-build applications where a shielded, low-maintenance bearing is preferred.

Suitable for

• Electric motors and small generators
• Gearboxes and reduction drives
• Conveyor rollers and material-handling equipment
• Pumps, fans and blowers operating at moderate speeds
• General rotating assemblies in industrial and workshop equipment

Key specifications

• Type: deep groove radial ball bearing, single-row
• Shielding: double metal shields on both sides (ZZ)
• Load capacity: designed primarily for radial loads, limited axial load capacity in both directions
• Speed range: suitable for moderate-speed applications (depends on lubrication and operating conditions)
• Maintenance: low-maintenance due to enclosed shield design; relubrication intervals depend on application
• Compatibility: standard metric bearing dimensions for common interchangeability

How to use

Select a bearing with correct dimensional fit for the shaft and housing, ensuring proper interference or clearance as specified by the equipment manufacturer. Clean mounting surfaces, avoid contaminant ingress during installation, and fit the bearing using appropriate tools to apply force only to the inner or outer ring as required. For shielded bearings, initial lubrication is usually factory-applied; verify lubricant condition and add compatible grease only if needed according to operating temperature and load. Do not remove metal shields as they are pressed in for protection and performance.

Lietojuma ieteikumi

Install bearings in clean conditions, avoid misalignment and axial impact loads during assembly, monitor operating temperature and vibration for early signs of wear, and follow machine manufacturer guidance for bearing fit and relubrication intervals to ensure reliable service life.