Lightweight 627 7x22x7mm Plastic Miniature Deep Groove Ball Bearing
627 Plastic Deep Groove Ball Bearing – 7x22x7mm, POM (Acetal) Races & Glass Balls, PA66 Cage. No lubrication required – runs dry. Ultra-lightweight, non-magnetic, chemically resistant to water, seawater, weak acids, and mild alkalis. Self-lubricating, FDA-compatible food-grade option available. Cost-effective metal bearing replacement for food processing, medical devices, packaging machinery, chemical equipment, and RC models where corrosion, sanitation, and insulation matter most.
Model: 627 Plastic Deep Groove Ball Bearing
Inner Diameter (d): 7 mm / 0.2756 in
Outer Diameter (D): 22 mm / 0.8661 in
Width (B): 7 mm / 0.2756 in
Raceway Material: POM (Polyoxymethylene / Acetal)
Ball Material: Glass (precision ground)
Lubrication: Self-lubricating – runs dry
Corrosion Resistance: Excellent (resists water, seawater, weak acids, alkalis, solvents)
Electrical Properties: Non-magnetic, electrically insulating
627 Plastic Deep Groove Ball Bearing – The Maintenance-Free, Lightweight Solution for Wet and Sensitive Environments
The 627 plastic bearing utilizes advanced engineering polymer materials that solve four fundamental industrial problems: corrosion, sanitary contamination from lubricants, electrical conductivity, and weight. Fabricated from premium acetal (polyoxymethylene, POM) resin for the raceways, with precision glass balls and a PA66 glass-fiber reinforced cage, this bearing operates effectively under conditions that would rapidly destroy an all-metal bearing
Key Advantages
No Lubrication Required
POM (acetal) is inherently self-lubricating; it doesn’t need external oil or grease to reduce friction between the rolling elements and raceways. The bearing runs completely dry while maintaining a low coefficient of friction and smooth rotation.No risk of grease contamination of food products, medical instruments, or chemical processes.Extremely Lightweight
The 627 plastic bearing weighs only about 2.5 to 4 grams — roughly 30 to 40 percent of the weight of a standard 627 steel bearing.Reduced overall equipment weight and lower power consumption.Non-Magnetic & Electrically Insulating
Plastic bearings are completely non-magnetic and electrically insulating.Because the 627 plastic bearing uses plastic rings and glass balls, it creates no magnetic interference and provides complete electrical isolation between the shaft and housing.Low Noise & Low Vibration Operation
The 627 plastic bearing’s acetal raceways dampen vibration, absorb impact energy, and drastically reduce operating noise compared to steel equivalents.This makes it particularly attractive in consumer electronics, office machinery, medical devices, and any application where quiet operation directly affects user comfort.- Food-Contact Safety
For food processing and pharmaceutical applications, lubricant contamination is a critical hazard. The 627 plastic bearing can be manufactured with FDA-approved materials and operates completely dry, eliminating the risk of grease contamination of food or drug products.
Applications Scenarios
The 627 plastic bearing’s unique property set makes it the preferred choice across multiple industries where steel bearings present insurmountable challenges:
Food Processing & Packaging Machinery
Medical & Pharmaceutical Equipment
Chemical Processing & Industrial Equipment
Packaging Automation & Material Handling
Semiconductor & Cleanroom Equipment
- RC Cars, Drones & Hobbyist Equipment
- Textile Machinery & Printing Presses
- Marine & Subsea Equipment
- Automation & Robotics
The 627 Plastic Deep Groove Ball Bearing provides a maintenance-free and lightweight solution for demanding industrial environments. Its POM (acetal) raceways, precision glass balls, and PA66 reinforced cage ensure reliable operation without lubrication. As a result, it eliminates the risk of contamination in food, medical, or chemical applications.
Moreover, the bearing is extremely lightweight, reducing equipment weight and lowering power consumption. Additionally, its non-magnetic and electrically insulating design prevents interference in sensitive electronics.
The precision raceways also minimize vibration and noise. This makes it ideal for consumer electronics, office machines, medical devices, robotics, and automation equipment.
XCCZC Bearing provides OEM customization and strict quality control. Therefore, customers receive high-performance plastic bearings suitable for cleanroom operations, material handling, and other critical applications. The 627 bearing combines durability, safety, and efficiency for sensitive or wet environments.
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