627 ZZ 7x22x7mm Double Shielded Chrome Steel Deep Groove Ball Bearing

627ZZ Deep Groove Ball Bearing – Chrome steel construction with double metal shields (ZZ) for effective contamination protection and grease retention. 3.3 kN dynamic load, up to 32,000 RPM. Pre-lubricated and ready to install. Ideal for small electric motors, power tools, skate wheels, RC models, 3D printers, and precision instruments.

Model: 627 ZZ
Inner Diameter (d): 7 mm / 0.2756 in
Outer Diameter (D): 22 mm / 0.8661 in
Width (B): 7 mm / 0.2756 in
Material: Chrome steel
Operating Temperature: -40°C to +120°C
Mass: Approx. 13 g (12.7 – 12.9 g)

Categories: Deep Groove Ball Bearings, Miniature Bearing

Tags: 627 bearing, 627 ZZ ball bearing, 627 ZZ bearing, 7x22x7mm bearing, chrome steel bearing, deep groove ball bearing, double shielded bearing

Description
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Product Overview

The 627ZZ deep groove ball bearing is a miniature single-row radial bearing that delivers reliable, high-speed performance in a remarkably compact package. With precise metric dimensions of 7 mm bore, 22 mm outer diameter, and 7 mm width, this bearing belongs to the 62 series of miniature deep groove ball bearings, engineered specifically for applications where space is limited but rotational performance cannot be compromised.

Key Features:

Exceptional Speed Capability
The 627ZZ is engineered for high-speed operation, with a grease-lubricated limiting speed of up to 32,000 RPM and an oil-lubricated limiting speed of up to 37,000 RPM. This speed capability makes it ideal for small electric motors, fans, encoders, and other high-speed rotating equipment.
Effective Contamination Protection
The double metal shields provide effective protection against larger dust and debris particles while maintaining the low friction required for high-speed operation. This combination of protection and performance makes the 627ZZ ideal for applications where both speed and cleanliness are important.
Compact, Space-Saving Design
With a mass of just 13 grams and a 7 mm width, the 627ZZ adds minimal weight and occupies minimal space while delivering robust load capacity. Its miniature dimensions enable the miniaturization of equipment without sacrificing performance.
Low Noise and Low Vibration
The 627ZZ is designed for quiet operation with low friction torque and low vibration. This makes it particularly suitable for applications where noise pollution is a concern, such as consumer electronics, office equipment, and medical devices.
Pre-Lubricated, Maintenance-Free Operation
Factory pre-greased and sealed with metal shields, the 627ZZ requires no additional lubrication during normal operation. This maintenance-free design reduces downtime and simplifies equipment upkeep.