627 Low Noise EMQ Bearing – Product Supply
The 627 Low Noise EMQ Bearing is a precision-engineered miniature deep groove ball bearing designed to meet the stringent demands of Electric Motor Quality (EMQ) applications. With its compact 7mm × 22mm × 7mm footprint, this bearing delivers exceptional performance in noise-sensitive environments where smooth rotation, minimal vibration, and operational reliability are paramount.
Manufactured to EMQ standards, the 627 Low Noise EMQ Bearing undergoes rigorous noise and vibration testing to ensure it meets the exacting requirements of electric motors, power tools, and precision instruments. Each bearing is 100% noise-inspected using Anderon meters or equivalent precision instruments to guarantee consistent low-noise performance.
Parameter Specification
Bearing Designation 627
Bore Diameter (d) 7 mm
Outer Diameter (D) 22 mm
Width (B) 7 mm
Chamfer Dimension (r min.) 0.3 mm
Dynamic Load Rating 3.25 kN / approx. 750 lbs
Static Load Rating approx. 300 lbs
Limiting Speed (Grease) up to 34,000 RPM
Material High-carbon chromium bearing steel (GCr15 / AISI 52100 equivalent)
Cage Material Nylon (Polyamide PA66)
Performance Class EMQ (Electric Motor Quality)
Noise Level Low
Precision Rating ABEC-3 (P6) or higher
Grease Type High-temperature grease
Key Features of 627 Low Noise EMQ Bearing
1. EMQ-Grade Precision
The 627 Low Noise EMQ Bearing is manufactured to Electric Motor Quality standards, with superfinished rolling contact surfaces achieving a mirror-like finish that ensures exceptionally smooth rotation. This precision manufacturing process significantly reduces friction, heat generation, and operational noise.
2. Ultra-Low Noise and Vibration
Designed specifically for noise-critical applications, this bearing delivers minimal acoustic and vibrational output. Each unit is subject to 100% noise inspection to verify compliance with EMQ noise specifications, ensuring consistent performance across every batch.
3. High-Speed Capability
With a grease limiting speed of up to 34,000 RPM, the 627 Low Noise EMQ Bearing is well-suited for high-speed rotating equipment where precision and reliability are non-negotiable.
4. Durable Construction
Manufactured from high-carbon chromium bearing steel (GCr15/52100)and featuring a high-temperature nylon cage, this bearing offers excellent wear resistance, thermal stability, and long service life even under demanding operating conditions.
5. Compact and Lightweight
The miniature 7×22×7 mm dimensions make this bearing ideal for space-constrained applications where every millimeter counts.
Applications of 627 Low Noise EMQ Bearing
The 627 Low Noise EMQ Bearing is widely used across multiple industries:
Electric Motors – Small motors, servo motors, and fractional horsepower motors
Power Hand Tools – Angle grinders, electric drills, hammer drills, circular saws, chainsaws, and stirrers
Home Appliances – Vacuum cleaners, washing machines, dishwashers, mixers, and beaters
Medical Devices – Precision medical equipment requiring quiet operation
Consumer Electronics – High-speed, noise-sensitive electronic devices
Pumps and Compressors – Small industrial machinery
Skateboards and Quad Skates – High-speed precision bearings
For other miniature low-noise applications, see our 606 bearing, 608 bearing, 626 bearing, 627 bearing, 634 bearing, 635 bearing, 6001 bearing ,6202 bearing,
62202 bearing, 62203 bearing, LV20/7 Bearing, LV20/8 Bearing, SG20 Bearing, SG25 Bearing ,SR620 Bearing,SR824 Bearing, SR1028 Bearing, SR1232 Bearing
627 Low Noise EMQ Bearing vs. Standard Power Hand Tool Bearings
While both the 627 Low Noise EMQ Bearing and standard power hand tool bearings share the same base dimensions (7×22×7 mm), several critical distinctions set the EMQ version apart:
Feature 627 Low Noise EMQ Bearing Standard Power Hand Tool Bearing
Noise Level Ultra-low, EMQ-certified Standard, not EMQ-tested
Vibration Minimized through superfinishing Higher vibration levels
Precision ABEC-3 (P6) or higher Standard commercial tolerance
Inspection 100% noise and vibration tested Batch sampling or no noise testing
Surface Finish Mirror-like superfinished raceways Standard ground finish
Grease High-temperature, EMQ-specified General-purpose grease
Application Noise-sensitive motors and precision equipment General industrial use
The key differentiator lies in the manufacturing philosophy: standard power hand tool bearings are built for durability under heavy loads, whereas the 627 Low Noise EMQ Bearing is engineered for quiet precision – delivering smooth, vibration-free operation that extends motor life, enhances user comfort, and enables higher-speed performance. For applications where noise reduction translates directly to product quality – such as premium power tools, medical devices, and consumer electronics – the EMQ-grade bearing is the superior choice.
Why Choose MTWB 627 Low Noise EMQ Bearing?
Proven EMQ Compliance – Manufactured and tested to meet Electric Motor Quality standards, ensuring reliable low-noise performance.
100% Quality Assurance – Every bearing undergoes individual noise inspection using Anderon meters or equivalent instruments.
High-Speed Optimization – Capable of operating at up to 34,000 RPM, suitable for the most demanding high-speed applications.
Versatile Compatibility – Direct replacement for standard 627 bearings with enhanced performance characteristics.
Competitive Supply – Available in bulk quantities for OEM and aftermarket applications.
Dimensions? 7 mm bore × 22 mm OD × 7 mm width.
Applications? Small motors, power tools, vacuum cleaners, precision instruments, and other noise-sensitive equipment.
Type? Miniature deep groove ball bearing, for compact, high-speed use.
Speed rating? Grease limiting speed up to 34,000 RPM (depends on lubrication, load, clearance, and operating conditions).
OEM supply? Yes. MTWB offers OEM and aftermarket supply, with customization based on application and order quantity.
August 28,2026
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