Features and Applications of the 3807-2Z Double-Row Angular Contact Ball Bearing
The 3807-2Z is a double-row angular contact ball bearing with the following basic dimensions: 35 mm inner diameter, 47 mm outer diameter, and 10 mm width. It features a contact angle of 25°. The "2Z" designation indicates the presence of steel dust shields on both sides, providing a compact, self-sealed design that is grease-lubricated and maintenance-free.ular
Key Features
• Bidirectional Combined Loading: The double-row angular contact ball bearing structure can simultaneously accommodate significant radial loads and bidirectional axial loads. It offers high resistance to tilting moments and superior rigidity compared to single-row bearings, making it ideal for applications involving long shaft spans, off-center loading, or alternating load directions.
• Low-Friction Sealing and Long-Lasting Lubrication: The non-contact dust shields minimize friction and temperature rise. They effectively prevent the ingress of dust and debris while retaining internal grease, ensuring a long, maintenance-free service life—an ideal solution for locations where frequent regreasing is difficult.
• Compact, Stable, and Reliable Design: The angular contact ball bearing features a design without filling slots, ensuring smoother operation. It utilizes a glass fiber-reinforced polyamide cage, which is lightweight and offers excellent vibration resistance. The bearing supports limiting speeds of approximately 11,700 rpm, delivering high operational precision and low noise levels.
• Easy Installation and Space Efficiency: As a non-separable, integrated unit, this angular contact ball bearing has moderate alignment requirements, which simplifies both the assembly process and the design of the bearing housing. It is particularly well-suited for applications where radial space is limited.
Typical Applications
Double-row angular contact ball bearings are widely used in speed reducers, gearboxes, small electric motors, water pumps, textile and packaging machinery, woodworking machine tools, and hydraulic pumps. They are especially well-suited for compact environments that require bidirectional load-bearing capacity and where maintenance is challenging. They perform reliably in low-to-medium speed applications and environments with light-to-moderate levels of contamination.