Nature: Bearing manufacturer

Brand: JZ

Core products: metric tapered roller bearings, imperial tapered roller bearings, double row tapered roller bearings, deep groove ball bearings, angular contact ball bearings, double row self-aligning roller bearings, cylindrical roller bearings.

Recommendation reason: Jingzhou Bearing has shown strong strength in enterprise scale, technology and research and development capabilities, market and brand influence, etc. These advantages together constitute the leading position of Jingzhou Bearing in the field of bearing manufacturing and sales.

Company Introduction

01 Hangzhou Jingzhou Bearing Co., Ltd

Hangzhou Jingzhou Bearing Co., Ltd. is located in Liangzhu Industrial City, a millennium cultural ancient city in Hangzhou. It covers an area of more than 100 acres and has convenient transportation. It is 100 meters away from the Moganshan Road exit of the Ring Expressway. It is currently composed of three independent legal subsidiaries: Jinzhou Technology, Jingzhou Bearing, and Junma Bearing.

The company integrates research and development, production, and trade, mainly producing and operating metric and imperial tapered roller bearings, cylindrical bearings, and double row tapered roller bearings with outer diameters ranging from 42mm to 500mm. Advanced manufacturing processes including intermediate frequency heating, rolling and expanding sleeve forging, liquid nitrogen protected atmosphere annealing, multi tool CNC turning, methanol cracking protected atmosphere quenching and tempering heat treatment, and automatic CNC online detection and grinding have been adopted; Equipped with advanced inspection equipment including German imported material composition spectral analysis detector, British imported Taylor contour detector, German imported Zeiss microscope, non-destructive magnetic particle crack detection machine, bearing strengthening life testing machine, etc., it can achieve detection and control of the entire process from raw material entry, process processing to final product.

The company passed the ISO9001 quality system certification audit in 2003, the TS16949 quality system and ISO14001 environmental system certification audit in 2008, and the national second level safety standard in 2012.

The company's products are widely used in industries such as automobiles, construction machinery, machine tools, and general machinery, and are exported to more than 40 countries in Europe and America, receiving praise from domestic and foreign customers. The company will continue to adhere to the quality policy of "novelty and uniqueness, continuous innovation, and customer needs as the focus", and the cultural concept of "caring for employees and giving back to society", committed to the common development with partners.

02 Jiangsu Jingzhou Bearing Co., Ltd

Jiangsu Jingzhou Bearing Co., Ltd. (a subsidiary of Hangzhou Jingzhou Bearing Co., Ltd.) covers an area of 410 acres and has modern workshops and office buildings of over 60000 square meters. The company mainly produces deep groove ball bearings and self-aligning roller bearings. The outer diameter of deep groove ball bearings is 26mm~350mm, and the product accuracy can reach P5 level or above. It is a silent bearing with vibration levels of Z2 and V3 groups or above. The outer diameter of angular contact ball bearings is 26mm~350mm, and the outer diameter of self-aligning roller bearings is 52mm~420mm. In the future, a new forging, machining, and heat treatment plant will be built covering an area of 30000 square meters, with a production capacity of 3000 tons per month. The annual output of various types of bearings will reach more than 20 million sets, providing better guarantees for production and creating higher quality products for customers.

The company's products are widely used in various industries such as automobiles, industrial motors, power tools, water pumps, elevators, agricultural machinery, and construction machinery.

Core process

1. Intermediate frequency heating forging

① The use of sleeve forging technology has improved the utilization rate of materials;

② The heating process adopts a dual temperature measurement system inside and outside the furnace, ensuring the accuracy of temperature;

③ The use of robotic arms can replace manual labor in material stamping, handling, loading and unloading at various stamping stations, reducing the labor intensity of operators.

2. Isothermal annealing

① Implement computer control, with functions such as process setting, storage, data display and recording, historical data query, and production capacity management.

② Annealing is carried out in a nitrogen protective atmosphere, creating a clean working environment; The ideal effect of high-quality, energy-saving, environmentally friendly, and continuous automated annealing has been achieved.

③ Due to the automation control and human-machine coordination of the annealing furnace, the labor intensity is greatly reduced.

3. CNC machining

① Using fully functional CNC machine tools for machining, with high dimensional accuracy.

② Two clamping processes are completed, with a short processing cycle.

③ Fully enclosed processing, efficient and safe, clean working environment, greatly reducing labor intensity.

4. Quenching and tempering

① Implementing computer control technology: realizing functions such as monitoring, setting, and storing real-time and historical records of heating temperature, heating time, and carbon potential in each temperature control zone. It can achieve historical data recording, making it easy to query and trace.

② The use of secondary cooling technology effectively reduces the residual austenite content in the product and improves the dimensional stability of the finished bearing.

③ Good production linearity and stable quality of workpiece heat treatment. The equipment failure rate is low. Has a significant energy-saving effect.

5. Numerical Control Grinding Processing

① We adopt advanced manufacturing processes such as advanced grinding, ultra automatic production lines, and automatic CNC online detection grinding to ensure high stability, precision, and efficiency in product processing.

② Online optimization of process parameters, automatic feedback of dimensional errors, and various abnormal alarms.

③ Adopting an efficient mechanical arm truss loading mechanism effectively reduces labor costs and improves logistics efficiency.

6. Automatic assembly

The assembly of bearing products adopts advanced domestic automatic assembly lines, and the entire process from part assembly to finished product inspection after fitting has been automated, effectively ensuring the assembly quality of products and greatly improving production efficiency.

Precision testing

The company's testing center was established in 2003, with a working area of 380 square meters. It has five laboratories including material metallographic heat treatment inspection, length dimension measurement, precision measurement of roughness profile, measuring tool repair, and life testing.

At present, we have 240 sets of various testing instruments, fully equipped and in good condition, with fixed assets of over 5 million yuan. We have German OBLF GS1000 spectrometer, German Zeiss metallographic microscope, British Taylor roughness profiler, bearing strengthening life testing machine, etc. There are currently 7 inspection personnel, with a lean team, reasonable structure, high professional quality, and excellent professional ethics.

Mainly responsible for material metallographic heat treatment inspection, length dimension measurement, precision detection of contour and roughness of bearing products, and able to conduct life tests on bearing reliability.

Product parameters

Sales network

After more than 30 years of development, Jingzhou Bearing has formed a marketing system that develops synchronously both domestically and internationally, providing strong support for the development and reliable service of enterprises. At present, our products are exported to more than 40 countries in Europe and America, and have received unanimous praise from domestic and foreign customers.

Looking to the future, in the new context of the ever-changing global trade pattern, opportunities and challenges coexist. Only by promoting change and innovation, enhancing core competitiveness through deeper cooperation, can we increase brand awareness and market share, and guide the company towards the path of becoming a strong enterprise in the bearing industry!

Welcome more customers and friends to choose Jingzhou bearings

Hangzhou Jingzhou Bearing Co., Ltd

Address: Liangzhu Industrial City, Hangzhou, Zhejiang Province

Email: hjh@jzbearing.com

Service Hotline: 0571-88777186/88777665

Jiangsu Jingzhou Bearing Co., Ltd

Address: No. 19 Yulan Avenue, Xuyi County Economic Development Zone, Huai'an City, Jiangsu Province

Email: hjh@jzbearing.com

Service Hotline: 0517-80817777