The 618/3 Bearing 3x7x2 mm is a compact and efficient deep groove ball bearing, ideal for applications requiring precision and durability in limited spaces. Manufactured without a specified brand, this bearing is part of the micro deep groove ball bearings category, designed for use in high-speed, low-load scenarios. Its main dimensions—3 mm bore diameter, 7 mm outer diameter, and 2 mm width—make it suitable for a wide range of industrial applications, particularly in miniaturized mechanical systems.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 3 mm |
| Outer diameter (D) | 7 mm |
| Width (B) | 2 mm |
| Basic dynamic load rating (C) | 0.345 kN |
| Basic static load rating (C0) | 0.12 kN |
| Limiting speed | 70,000 rpm |
| Reference speed | 50,000 rpm |
| Shielding / Sealing | Open |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The 618/3 Bearing 3x7x2 mm offers several technical advantages, making it a preferred choice for precise mechanical applications:
- Supports continuous operation up to 70,000 rpm due to its optimized ball geometry, enhancing high-speed performance.
- Constructed from heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life exceeding 107 cycles.
- Standard CN radial clearance, which is optimal for applications that require no preload.
- Open design facilitates easy lubrication maintenance and reduces friction in low-load environments.
- Compact dimensions enable its integration into space-constrained devices and systems.
Typical applications
This micro deep groove ball bearing is highly versatile and finds use across various specialized industries:
- 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 and contra-angles.
- Precision robotics, including harmonic drive reducers and cardan joints.
- Medical devices like peristaltic pumps and lung ventilators.
Availability and ordering
Eurobearing.eu is a specialized B2B supplier offering fast availability of the 6183-ECO bearing. Businesses can add this item to their cart for immediate purchase or request a quotation for bulk quantities to meet larger operational needs.
