SKF Single Row Deep Groove Ball Bearing 4 mm Inside Diameter 9 mm Outside Diameter Shielded 638/4-2Z

SKF 638/4-2Z is a single row deep groove ball bearing designed with a 4 mm inside diameter and 9 mm outside diameter. This shielded ball bearing supports light to medium load applications and is engineered for both axial and radial load handling. The double-ended shielding prevents ingress of contaminants and retains lubricant, thereby reducing maintenance cycles and extending the operational life of the bearing.

The bearing features a sheet metal cage and high-quality steel balls, contributing to its robustness and durability in various industrial and mechanical uses. Its low friction design ensures minimal noise and vibration, allowing it to function efficiently at high limiting speeds of up to 70,000 rpm.

Applications for this bearing include agricultural machinery, centrifugal pumps, transmission systems, domestic appliances, and office equipment, making it versatile across multiple sectors. The bearing's parallel bore type and standard internal clearance (CN) provide precise mounting and reliable performance.

Handles axial and radial loads in both directions effectively. Robust steel ball and sheet metal cage construction ensure long service life. Sealed design keeps lubrication while preventing contamination. Lightweight at approximately 1.3 grams to reduce installation strain.

Supports very high rotational speeds up to 70,000 rpm. Suitable for diverse industrial and commercial applications. Internal clearance and bore specifications meet precision standards. Complies with applicable inch, metric, P5, and P6 tolerances.

The deep groove design minimizes friction and vibration. High static and dynamic load ratings to withstand operational stresses.

This SKF ball bearing is a reliable solution for industrial, manufacturing, agricultural, and equipment maintenance needs. It is part of a well-known series renowned for quality and consistent performance. Explore related Ball Bearings and rotary bearing units available on EnvMart for your specific engineering requirements.