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About NJSB
As a

miniature ball bearings manufacturers and miniature bearings factory

, Ningbo Jinxin Bearing Technology Co., Ltd is located in Ningbo (Dongqiao Town, Haishu District), the base of miniature bearings in China. At present, the company covers an area of ​​more than 20 acres and a building area of ​​about 30,000 square meters. It has complete manufacturing strength and product testing capabilities. In terms of manufacturing equipment, it has a full-process CNC lathe processing production line, a grinding production line, a heat treatment and cage workshop, which can meet the processing needs of bearing products of various types, specifications, precision grades and special use requirements.
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Project Solution Miniature bearing solutions

The products are widely used in various types of micro motors, instruments and meters, precision instruments, mechanical equipment, household appliances, medical equipment, fishing gear, mining machinery and precision machine tools, etc.

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Product Center
  • Our Strengths,
    Your Competence     Process Control

    The company uses advanced production equipment and automated production lines to strictly control every detail of the production process. It is equipped with professional technicians to monitor and ensure that each process can be carried out according to the established standards.

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  • Our Strengths,
    Your Competence     Strict Testing Procedures

    Each batch of products must go through multiple rigorous testing procedures before leaving the factory, including dimensional accuracy, hardness testing, fatigue life testing, etc. The company's testing equipment is at the top level in the industry to ensure the accuracy and authority of the test results.

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  • Our Strengths,
    Your Competence     Professional Sales Team

    We have a professional sales team that not only has extensive product knowledge, but can also provide timely and accurate answers and suggestions to help customers choose the right products and solutions no matter what challenges or questions they face.

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Latest News
  • How to measure rotary friction of miniature ball bearings?

    Measuring the rotational friction of miniature ball bearings essentially involves measuring the resistance torque they generate during rotation. Due to the small size and extremely low friction of these bearings, conventional measurement methods are often not sensitive enough.   Here are several commonly used measurement methods...

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  • What are the smallest ball bearings? Let's find out!

    In the engineering field, the smallest ball bearings are classified as "miniature bearings" or "instrument bearings." These precision-engineered small parts not only push the limits of manufacturing technology but are also crucial for the proper functioning of many cutting-edge devices.   ◆ Definition of Miniature Bearings While...

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  • What is a ball bearing used for? (Usage Guide)

    Ball bearings are practically ubiquitous in our daily lives; wherever there's something rotating, you'll almost certainly find them. Their core mission is to make rotation smoother and more effortless.   Here are the main uses and applications of ball bearings: ∎ The "joints" of transportation vehicles Whether it's a family car ...

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