The 62203 Low Noise EMQ Bearing is a 17×40×16mm single-row deep groove ball bearing developed for noise-sensitive electric motors, power tools, robotics, medical devices and industrial automation equipment.
The 62203 Low Noise EMQ Bearing is a precision-engineered deep groove ball bearing designed specifically for electric motor applications requiring exceptional quiet operation, minimal vibration, and reliable high-speed performance. Manufactured under MTWB rigorous quality control standards, this bearing represents the culmination of significant technical breakthroughs in miniature and small deep groove ball bearing (DGBB) manufacturing.
With a compact 17mm bore, 40mm outside diameter, and 16mm width, the 62203 EMQ bearing delivers outstanding rotational accuracy, extended service life, and consistent performance across demanding applications including power tools, medical devices, robotics, precision motors, and industrial automation equipment.
1. Low Noise & Vibration Performance (EMQ Grade)
The 62203 EMQ bearing is manufactured to Electric Motor Quality (EMQ) standards, a special classification for low-noise bearings widely used in electric motors, household appliances, and power tools. MTWB achieves this through:
●Precision raceway grinding – Targeted quality control during the inner ring raceway grinding process plays a critical role in reducing bearing noise
●100% noise and vibration inspection – Every bearing undergoes rigorous testing using noise testers and vibration testers before leaving the factory, with noise levels classified from Z1 to Z4 and vibration from V1 to V4
●Superfinished rolling contact surfaces – Mirror-like surface finish ensures smooth rotation and minimal friction
2. Premium Material Selection
MTWB selects only the finest materials including G95Cr18 and GCr15 bearing steels, plus corrosion-resistant 300-series stainless steel, ensuring strength, durability, and whisper-quiet operation over the long haul.
3. Advanced Lubrication
Bearings are typically lubricated with antirust oil (open bearings) or lithium-based grease (sealed bearings), with customized grease options available upon customer request.
4. “Zero-Error” Production
MTWB‘s digitalized SPC production line ensures consistent quality and precision across every batch.
62203 EMQ Bearing vs. Standard Power Hand Tool Bearings
While both 62203 EMQ bearings and standard power hand tool bearings share similar dimensional specifications, several critical distinctions set the EMQ-grade bearing apart:
Feature 62203 EMQ Bearing Standard Power Hand Tool Bearing
Noise Level Z1-Z4 rated, 100% noise tested Basic noise inspection only
Vibration Control V1-V4 rated, precision tested Standard vibration tolerance
Raceway Finish Superfinished mirror-like surface Standard ground finish
Quality Control 100% inspection before and after lubrication Batch sampling
Precision Class P4 / EMQ grade Typically ABEC-1 or standard
Lubrication Premium low-noise grease, customized options Standard grease
Application Focus Noise-sensitive electric motors,
medical devices, roboticsGeneral industrial power tools
The key difference: Standard power hand tool bearings are designed for general durability and load capacity, whereas the 62203 EMQ bearing is precision-engineered for low noise, low vibration, and high-speed operation – essential characteristics for electric motors, fans, and precision equipment where acoustic performance directly impacts user experience and equipment reliability.
EMQ bearings are widely used in electric power tools, household appliances, toys, car motors, and other applications where quiet operation is paramount. The 62203 EMQ bearing takes this a step further with MTWB‘s proprietary manufacturing breakthroughs, delivering noise and vibration performance that exceeds standard EMQ requirements.
For other miniature low-noise applications, see our
LV20/7 Bearing, LV20/8 Bearing, SG20 Bearing, SG25 Bearing ,SR620 Bearing,SR824 Bearing, SR1028 Bearing, SR1232 Bearing
The 62203 Low Noise EMQ Bearing is ideally suited for:
Electric Motors & Generators – Precision motors, servo motors, and fractional horsepower motors
Power Tools – Drills, grinders, saws, and other handheld power equipment
Medical Devices – Surgical tools, diagnostic equipment, and dental handpieces
Robotics – Precision joints, actuators, and automation systems
Industrial Automation – Conveyor systems, pumps, compressors, and fans
Household Appliances – Vacuum cleaners, kitchen appliances, and HVAC systems
Automotive – Small motors, window regulators, and ancillary systems
Why Choose MTWB 62203 EMQ Bearing?
Unmatched Technical Expertise
MTWB has achieved significant technical breakthroughs in miniature and small deep groove ball bearing manufacturing, leveraging advanced production technology, precision grinding, and strict quality control. As a professional customized miniature bearing manufacturer and OEM supplier specializing in high-precision bearings, MTWB brings decades of engineering expertise to every product.
Proven Performance
MTWB bearing solutions have been validated by industry leaders – for example, optimized bearing designs have demonstrated 30% improvement in lubrication efficiency and 8% reduction in energy consumption in CVT systems.
Beyond the standard 62203 EMQ bearing, MTWB offers:
●Custom internal dimensions and raceway curvature designs
●Specialized lubricant selection for specific operating conditions
●Tailored sealing solutions
●Custom noise and vibration grades (Z1-Z4, V1-V4)
October 14,2026
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