1. Product Overview & Specifications
KHRD Angular Contact Ball Bearing Series (7326A, 7328A, 7330A, 7332A)
Premium-grade bearings designed for high-speed rotational stability in painting equipment and industrial machinery. Engineered with 25° contact Engineered with 25° contact angle for combined radial/axial load capacity.
Model |
Inner Diameter (mm) |
Outer Diameter (mm) |
Dynamic Load (kN) |
Max Speed (rpm) |
7326A |
130 |
280 |
245 |
3,800 |
7328A |
140 |
300 |
275 |
3,500 |
7330A |
150 |
320 |
305 |
3,200 |
7332A |
160 |
340 |
335 |
3,000 |
2. Key Applications
Industrial Painting Systems
- Robotic spray arms: Maintain positional accuracy under continuous oscillation
- Conveyor turntables: Reduce vibration during high-speed part rotation
Precision Machinery
- CNC spindle support: Thermal stability in 24/7 production environments
- Gearbox positioning: Axial load management in multi-stage transmissions
3. Installation & Maintenance Guidelines
Mounting Procedures
- Clean housing surfaces with non-linting cloth (IPA 99.9%)
- Use induction heaters (max 110°C) for interference fits
- Apply EP2 grease to raceways pre-assembly
Lubrication Intervals
Operating Temperature |
Relubrication Period |
<70°C |
2,000 hours |
70-90°C |
1,200 hours |
4. Industry-Specific Use Cases
Automotive Painting Lines
Implemented 7330A bearings in robotic paint applicators at a Shanghai OEM plant.
- Reduced bearing-related downtime by 42%
- Extended maintenance cycles from 6 weeks to 4 months
Aerospace Component Coating
7328A series in satellite dish coating turntables.
- Withstood 15G acceleration forces during spin coating
- Maintained <0.005mm runout at 2,800 RPM
5. Client Success Stories
Case Study 1: German Automotive Supplier
- Challenge: Premature bearing failure in electrostatic paint robots
- Solution: Custom-shielded 7326A bearings with conductive grease
- Result: 18-month continuous operation without maintenance
Case Study 2: Chinese Industrial Machinery OEM
- Challenge: Vibration issues in high-torque coating drums
- Solution: 7332A bearings with pre-loaded tandem arrangement
- Result: Achieved ISO 1940 G2.5 balance certification
6. Request Customised Solutions
Contact our bearing engineers for application-specific configurations.
Email. info@vivalr.com
Phone. (86) 15866781826
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