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The 638/4-2Z is a compact single-row deep groove ball bearing, measuring just 4mm by 9mm by 4mm. Made from chrome steel with stainless steel cage, it’s built for radial loads up to 95 lbf.
Its shielded design keeps grease in and dirt out, making it low-maintenance. With a max speed of 70,000 RPM, it spins smoothly for its size.
The P6 tolerance ensures precise operation, while the CN radial clearance offers reliable performance. It works in temperatures from -30°C to 120°C.
Ideal for small electric motors or precision instruments where space is limited. Compliant with RoHS and REACH standards.
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Why Choose 638/4-2Z Bearing for Precision Tasks?
638/4-2Z Bearing features a shielded design, protecting against dust and contaminants while maintaining smooth operation.
Its chrome steel construction ensures durability and resistance to wear in radial load applications.
With a dynamic radial load capacity of 95 lbf, it handles demanding tasks efficiently.
The P6 tolerance class guarantees high precision, making it suitable for sensitive equipment.
How Is 638/4-2Z Bearing Engineered for Reliability?
638/4-2Z Bearing uses stainless steel cages to keep the balls aligned, reducing friction and noise.
The grease lubrication ensures consistent performance across a temperature range of -30° to 120°C.
Its compact size of 4 mm×9 mm×4 mm makes it ideal for space-constrained applications.
With a maximum speed of 70,000 rpm, it delivers reliable high-speed performance.
Built for Durability: 638/4-2Z Bearing
638/4-2Z Bearing’s chrome steel rings and balls provide excellent resistance to wear and corrosion.
The shielded design prevents contaminants from entering, extending the bearing’s service life.
Its static radial load capacity of 26 lbf ensures stability in various applications.
The lightweight design at 0.00098 kg makes it easy to integrate into compact systems.
Optimized for Efficiency: 638/4-2Z Bearing
638/4-2Z Bearing’s deep groove design enhances load distribution, improving overall efficiency.
The stainless steel cage minimises friction, allowing smoother rotation at high speeds.
With a radial clearance trade number of CN, it offers balanced performance for precision tasks.
Its compliance with RoHS and REACH standards ensures environmental and safety considerations are met.
Common Applications of 638/4-2Z Bearing
In small electric motors, 638/4-2Z Bearing is a reliable choice due to its compact size and shielded design, which keeps dust out while maintaining smooth rotation. Its chrome steel construction ensures durability in continuous operation.
Where Is 638/4-2Z Bearing Used?
You’ll often find 638/4-2Z Bearing in precision instruments like optical devices or small gearboxes, where its low friction and high-speed capability are key. The grease lubrication helps it run quietly and efficiently.
Built for Heavy-Duty Use: 638/4-2Z Bearing
Despite its small size, 638/4-2Z Bearing handles radial loads well in applications like dental tools or miniature pumps. The stainless steel cage adds extra resistance to wear and tear.
Light-Duty vs Heavy-Duty: Best Uses for 638/4-2Z Bearing
For light-duty tasks like hobbyist drones or model trains, 638/4-2Z Bearing offers smooth performance. In heavier scenarios, it’s suited for small industrial fans or conveyor guides.
Practical Applications of 638/4-2Z Bearing
In consumer electronics such as cooling fans or printers, 638/4-2Z Bearing’s shielded design prevents contamination. Its metric sizing makes it easy to replace in European and Asian devices.
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