The SKF 618/5 5x11x3 mm bearing is a miniature deep groove ball bearing, designed for precision applications where space and efficiency are paramount. With a bore diameter of 5 mm, an outer diameter of 11 mm, and a width of 3 mm, this bearing is engineered to facilitate smooth rotational motion in compact mechanical assemblies. SKF, a reputable brand in the field of bearings, ensures that this component meets stringent industrial standards, making it suitable for various high-precision applications.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) in mm | 5 |
| Outer diameter (D) in mm | 11 |
| Width (B) in mm | 3 |
| Basic dynamic load rating (C) in kN | 0.57 |
| Basic static load rating (C0) in kN | 0.19 |
| Limiting speed (rpm) | 70,000 |
| Cage type | Pressed steel |
| Shielding / Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The SKF 618/5 bearing offers several technical advantages that enhance its functionality in precision applications:
- Capable of continuous operation up to 70,000 rpm due to its miniaturized ball geometry.
- Manufactured with heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance, suitable for assemblies without preload requirements.
- Open design, allowing for customized lubrication solutions tailored to specific application needs.
- Precision class P0 / ABEC-1, ensuring standard alignment and rotation accuracy.
Typical applications
This miniature deep groove ball bearing is extensively used in a range of high-precision sectors, including:
- Measurement and laboratory instruments, such as optical encoders and electronic micrometers.
- Aeromodelling and drones, particularly for brushless motors and planetary gearboxes.
- Dental equipment, including turbines, contra-angles, and micromotors.
- Precision robotics, in components like harmonic drive reducers and cardan joints.
- Medical devices, such as peristaltic pumps and lung ventilators.
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the SKF 618/5 bearing, ensuring fast availability of this essential component. You can easily request a quote for bulk quantities or add the SKU 6185-SKF directly to your cart for streamlined procurement.

