EMQ stands for Electric Motor Quality – a classification developed to identify bearings engineered specifically for applications demanding exceptionally low noise and smooth rotation . An EMQ bearing is a precision deep groove ball bearing manufactured to tighter tolerances with superior surface finishes, making it ideal for high-speed electric motors and noise-sensitive equipment .
MTWB specializes in manufacturing high-performance miniature and small EMQ deep groove ball bearings, leveraging advanced production technology, precision grinding, and strict quality control to deliver outstanding rotational accuracy and long service life
In rotating bearings, noise is the audible component of vibration. Greater vibration not only shortens bearing lifespan but can also damage the motor or machinery it serves . For applications where bearings operate close to users – such as medical devices, robotics, and consumer electronics – low-noise operation ensures:
User comfort and safety
Reliable equipment performance
Compliance with strict industry standards
Extended service life
As electric motors, EVs, and precision equipment continue to evolve, manufacturers face increasing pressure to reduce operational noise and vibration without compromising speed, durability, or efficiency. Conventional bearings often struggle to meet demanding NVH (Noise, Vibration, and Harshness) requirements, leading to higher vibration, increased wear, and greater maintenance costs.
| Bearing | Size | Main Application |
|---|---|---|
| 606 | 6×17×6 mm | Small motors |
| 608 | 8×22×7 mm | Power tools / motors |
| 626 | 6×19×6 mm | Miniature motors |
| 627 | 7×22×7 mm | Electric motors |
| 634 | 4×16×5 mm | Precision motors |
| 635 | 5×19×6 mm | Small electric motors |
While both EMQ and standard deep groove ball bearings share the same basic design, EMQ bearings differ in several critical aspects:
The key to MTWB low-noise bearings lies in reducing vibration through targeted quality control during the grinding process of the inner ring raceway. MTWB high-precision machines and advanced techniques refine every aspect of the bearing – from raceways to balls – ensuring they exceed industry standards .
MTWB miniature and small deep groove ball bearings are essential components in compact, precision-driven equipment across a wide range of industries :
Medical & Dental – Handpieces, surgical instruments, diagnostic devices
Aerospace & Aviation – Instruments, high-altitude monitoring devices
Industrial Automation – CNC machines, cutting equipment, guided moving rails
Consumer & Office Equipment – Computer cooling fans, hard disk drives, sewing machines, household appliances
MTWB offers a full range of miniature bearings from 0.6mm to 30mm ID – in fact, the world's smallest precision ball bearing at 0.6mm ID, available up to P4/ABEC-7 precision class .
