Miniature High Speed Deep Groove Ball Bearing : 629ZZ

Basic Parameters

The numbers in the bearing designation 629ZZ have specific meanings, typically representing the basic size and type of the bearing. Specifically:

1. **Basic Size**:
- The first digit "6"; represents the type of bearing, which is a deep groove ball bearing.
- The next digit "2" usually indicates the width series or size series of the bearing. However, in the case of miniature bearings like 629ZZ, this digit may be more of a part of the type identification rather than directly indicating width.
- The subsequent digi"9"; denotes the bore diameter of the bearing, measured in millimeters (mm). Therefore, the bore diameter of the 629ZZ bearing is 9mm.

2. **Suffix Meaning**:
"ZZ"; is a suffix that indicates that the bearing has metal shields (also known as metal seals or ZZ-type dust covers) on both sides. These shields help prevent dust, dirt, and other contaminants from entering the bearing interior, thereby extending the bearing's service life.

In summary, the numerical meaning of the bearing designation 629ZZ is: it is a miniature deep groove ball bearing with a bore diameter of 9mm and metal shields on both sides. This type of bearing is commonly used in applications requiring high precision, low noise, and long service life, such as electric tools, small motors, pulleys, toys, etc.

Product Application

Product Packing