• Heavy-Duty Gearbox Input/Output Shafts
• Industrial Fan and Blower Shafts
  
• Conveyor Drive Systems

• Tractor PTO (Power Take-Off) Supports
• Combine Harvester Gear Drives
• Excavator Swing Drive Units

• Forklift Drive Axle Supports
• Industrial Mixer and Agitator Shafts
• Rolling Mill Conveyor Rollers

• Pump and Compressor Shafts
• Mining Equipment Drivelines
• Diesel Engine Auxiliary Drives

01. High Load-Carrying Capacity

With optimized contact angles (15° C, 25° AC, or 40° B), the 7300 Series is built to handle significant combined radial and axial forces, enhancing system rigidity and reliability in heavy-load applications.

02. Durable Construction for Demanding Environments

Manufactured from high-quality chrome steel and available in precision grades up to P5, these bearings deliver consistent performance, reduced wear, and extended service life even under harsh operating conditions.

03. Flexible Mounting and Sealing Options

Supports single or paired mounting arrangements to achieve desired stiffness and load distribution. Available in open, shielded (ZZ), or sealed (2RS) configurations to accommodate various environmental and lubrication requirements.

Interchange Part Numbers

Direct replacement for:

• SKF: 7304 C, 7304 AC, 7304 B
• NSK: 7304C, 7304AC
• FAG: 7304 C, 7304 AC
• NTN: 7304C, 7304AC
• KOYO: 7304C, 7304AC

Design & Configuration

The 7300 Series bearings are commonly supplied in open design for customized lubrication. Steel shields (ZZ) provide effective protection against coarse contaminants, while rubber seals (2RS) offer a sealed, low-maintenance solution. The contact angle can be selected based on application needs: 15° (C) for higher speeds with moderate axial load, 25° (AC) for balanced performance, or 40° (B) for maximum axial rigidity in heavy-load scenarios.

“In heavy-duty gearboxes and industrial drivetrains, the 7304 AC bearing is valued for its ability to sustain high combined loads while maintaining alignment and smooth operation over extended periods.”