• AC & DC Electric Motors
• Fans & Blowers
• Pumps & Compressors
• Gearboxes & Power Transmission

• Alternators & Starters
• Water Pumps
• Steering Systems
• Light‑duty Wheel Hubs

• Conveyor Systems
• Textile Machinery
• Machine Tool Spindles
• Agricultural Equipment

• Construction Equipment
• Material Handling
• Food Processing Machinery
• Printing & Packaging Machines

01. Design & Protection

The double, non‑contact pressed steel shields offer robust dual‑side protection against dust and solid contaminants. This design effectively retains lubrication, extends service life, and ensures low friction operation suitable for a wide range of industrial applications.

02. Robust Construction & Load Capacity

The 63 series design features an optimized internal geometry that balances high radial load capacity with moderate axial load capability. Its robust construction ensures long‑term reliability under moderate to heavy loads, making it a preferred choice for electric motors, pumps, and gearboxes.

03. High‑Speed & Smooth Operation

Manufactured to fine precision tolerances, with availability in higher grades (up to P5 precision grade). The refined raceway finish and accurate ball complement deliver exceptionally smooth, quiet, and stable rotation with minimal vibration—perfect for continuous‑duty machinery and sensitive equipment.

Interchange Part Numbers

Common manufacturer equivalents include:

• SKF: 6305-ZZ
• NSK: 6305ZZ
• FAG: 6305ZZ
• NTN: 6305ZZ
• KOYO: 6305ZZ
• Timken: 6305ZZ

Design & Configuration

The 6305-ZZ is equipped with double pressed steel shields as standard. For applications requiring enhanced sealing against moisture or fine contaminants, configurations with double rubber contact seals (6305-2RS) are available as an alternative.

"For general purpose electric motors and industrial machinery, the 6305-ZZ offers a perfect balance of protection and performance."