The SKF 618/7 bearing is a miniature deep groove ball bearing designed for precision applications requiring compact dimensions. Manufactured by SKF, this bearing features a bore diameter of 7 mm, an outer diameter of 14 mm, and a width of 3.5 mm. It is particularly suited for industries that demand high accuracy and minimal space usage, such as precision instruments and small electric motors. This product, with SKU 6187-SKF, is a reliable choice for professionals seeking efficient rotational performance in constrained environments.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 7 mm |
| Outer diameter (D) | 14 mm |
| Width (B) | 3.5 mm |
| Basic dynamic load rating (C) | 1.28 kN |
| Basic static load rating (C0) | 0.53 kN |
| Limiting speed | 70,000 rpm |
| Cage type | Pressed steel |
| Shielding/Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The SKF 618/7 bearing offers several notable technical benefits that enhance its performance in demanding applications:
- Miniature design allows continuous operation up to 70,000 rpm, ideal for high-speed applications.
- Heat-treated rings in 100Cr6 chrome steel ensure a rolling-contact fatigue life exceeding 10^7 cycles.
- Open design facilitates easy lubrication and maintenance, suitable for controlled environments.
- Standard CN radial clearance supports assemblies without preload, optimizing alignment.
- Lightweight construction at only a few grams, minimizing inertia in dynamic applications.
Typical applications
The SKF 618/7 bearing is widely used across various sectors, providing precision and reliability in the following applications:
- Measurement and laboratory instruments, including optical encoders and electronic micrometers.
- Aeromodelling and drones, particularly in brushless motors and planetary gearboxes.
- Dental equipment, such as turbines, contra-angles, and micromotors.
- Precision robotics, including harmonic drive reducers and cardan joints.
- Medical devices, notably in peristaltic pumps, lung ventilators, and microscopes.
Availability and ordering
As a specialized B2B supplier, Eurobearing.eu ensures fast availability of the SKF 618/7 bearing (SKU: 6187-SKF). Customers can easily add this item to their cart or request a quotation for bulk quantities directly from our platform, ensuring a smooth purchasing process tailored to industrial needs.
