The SKF 6304 NR/C4 Bearing 20×57.9×15 mm is a deep groove ball bearing featuring a snap ring, designed for industrial applications requiring robust performance and precision. With its compact dimensions of 20 mm bore diameter, 57.9 mm outer diameter, and 15 mm width, this bearing is an ideal choice for various machinery components. SKF, a leader in bearing technology, ensures optimal functionality for applications in sectors such as automotive, manufacturing, and more.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 57.9 mm |
| Width (B) | 15 mm |
| Basic dynamic load rating (C) | 23.2 kN |
| Basic static load rating (C0) | 11.2 kN |
| Limiting speed | 13,000 rpm |
| Reference speed | 11,000 rpm |
| Cage type | Pressed steel |
| Shielding / Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | C4 |
Technical advantages
The SKF 6304 NR/C4 Bearing offers several technical advantages that make it suitable for demanding industrial applications:
- Withstands up to 13,000 rpm, making it suitable for high-speed operations.
- Constructed from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 10^7 cycles.
- C4 internal clearance accommodates thermal expansion and shaft misalignment under load.
- Pressed steel cage reduces friction and heat generation, enhancing operational efficiency.
- Snap ring feature simplifies axial location in housing, reducing installation time.
Typical applications
This bearing is commonly used in various industrial sectors, including:
- Automotive manufacturing (alternators, transmission systems)
- Industrial pumps and compressors (centrifugal pumps, screw compressors)
- Electrical motors (general-purpose motors, servo motors)
- Textile machinery (weaving machines, spinning frames)
- Conveyor systems (belt conveyors, roller conveyors)
Availability and ordering
Eurobearing.eu is your trusted B2B supplier for the SKF 6304 NR/C4 Bearing, ensuring fast availability and competitive pricing. Easily add this product to your cart or request a quotation for bulk orders to meet your operational needs efficiently.

