The 618/8 Bearing 8X16X4, available under SKU 6188-ECO, is a deep groove ball bearing commonly used for high-speed applications in compact assemblies. This bearing, characterized by its micro-dimensions with a bore diameter of 8 mm, an outer diameter of 16 mm, and a width of 4 mm, is suitable for various industrial purposes where space and weight constraints are critical. Its design ensures efficient performance in precision instruments and other specialized equipment.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 8 mm |
| Outer diameter (D) | 16 mm |
| Width (B) | 4 mm |
| Basic dynamic load rating (C) | 1.12 kN |
| Basic static load rating (C0) | 0.36 kN |
| Limiting speed | 45,000 rpm |
| Cage type | Pressed steel |
| Shielding / Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
Designed to meet the demands of precision engineering, the 618/8 bearing offers several technical advantages:
- Capable of supporting rotational speeds up to 45,000 rpm, suitable for high-speed applications.
- Constructed from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance, making it ideal for assemblies that do not require preload.
- Open design for applications where rapid heat dissipation is advantageous.
- Lightweight and compact, making it suitable for space-constrained setups.
Typical applications
This versatile bearing is used across a variety of specialized industries and applications, including:
- Measurement and laboratory instruments, such as optical encoders and electronic micrometers.
- Aeromodelling and drones, specifically in brushless motors and planetary gearboxes.
- Dental equipment, including turbines and contra-angles.
- Precision robotics, employed in harmonic drive reducers and cardan joints.
- Medical devices, particularly in peristaltic pumps and lung ventilators.
Availability and ordering
As a specialized B2B supplier, Eurobearing.eu ensures swift availability of the 6188-ECO bearing. Businesses can easily add this bearing to their cart for immediate purchase or request a quotation for bulk orders.

