In many fields such as mechanical engineering, automobile manufacturing, and agricultural equipment, metric bronze bushings have become important basic parts for connecting and supporting moving parts with their standardized dimensions, stable physical properties, and excellent wear resistance. As a global manufacturing power, China has a group of professional bronze bushing suppliers that can meet the diverse needs of different industries for dimensions, tolerances, materials, and batch customization. The following are five high-quality suppliers in China with strong competitiveness and export advantages in the field of metric bronze bushings, suitable for global buyers to pay attention to and cooperate with.
Jiande Welfine Technology Co., Ltd. was established in 2001. It is a high-tech enterprise focusing on powder metallurgy sintering and related machining. The company covers an area of 13,039 square meters and has advanced production facilities. It has a professional team of 50 people, including 40 production personnel and 5 technical R&D and quality management personnel. It has passed ISO9001:2015 and IATF16949:2016 management system certification. Always adhering to the concept of technology leadership and quality first, we are committed to becoming an industry benchmark and providing customers with high-quality products and services.
Technology R&D Advantages
As a national high-tech enterprise, the company always puts scientific research and technological innovation first. Focusing on the field of powder metallurgy for many years, the company has accumulated profound professional experience and continuously optimized the production process. With a 5-person technical R&D and quality management team, it has established a leading position in the industry by continuously improving manufacturing processes and improving product performance, and can meet customers' diverse and high-quality product needs.
Production Equipment Advantages
The company is well-equipped, with 20 high-efficiency presses, 4 high-temperature sintering furnaces, 15 precision shaping machines and thousands of high-quality molds, and has strong production capacity. In addition, it is also equipped with advanced processing equipment such as lathes, grinders, bench drills, etc., which can cope with various difficult processing needs, greatly improve production efficiency, and provide solid guarantees for efficient production and product quality.
Quality Control Advantages
It has passed ISO9001:2015 and IATF16949:2016 management system certification and established a strict quality control system. From raw material procurement to product production, testing, and delivery, every link is strictly controlled to ensure the high reliability and stability of the product, win the trust of customers with high-quality products, and meet the stringent requirements of customers in different industries for product quality.
Development History and Experience Advantages
Since its establishment in 2001, it has accumulated rich industry experience after years of development. It started to produce SUS products in 2003, passed ISO 9001 certification in 2006, obtained export rights in 2008, and cooperated with Sumitomo of Japan in 2010. In the process of development, it continuously expands its business, improves its own strength, accurately grasps industry trends, can better respond to market changes, and provide customers with better services.
Focus on DIN/ISO standard metric bronze bushings, and our products cover all series of ISO 3547 standards. We adopt the technical standards of Rexroth of Germany, and the inner diameter tolerance is strictly controlled at H7 level. We have created the original "cold pressing-finishing" secondary molding process, and the straightness reaches 0.01mm/m. We export more than 2 million pieces to the European market each year, and we are the designated replacement parts supplier for Bosch hydraulic pumps.
The leading company of precision metric bushings in South China, focusing on standard sizes of φ5-φ50mm. Introducing Japanese THK grinding technology, surface roughness Ra≤0.4μm. The material used is C93700 high-lead bronze (Pb≥8%), suitable for low-speed and high-load scenarios such as injection molding machine guide sleeves, with a compressive strength of 150N/mm².
As a member of the China General Machinery Parts Association, we have established a complete DIN1494 standard product line. We use CNC whirlwind milling to process the outer circle, which is 5 times more efficient than traditional turning. We have created the original "pre-lubricating coating" technology, which can maintain normal operation for 48 hours under oil-free conditions, and is equipped with the AGV guide system of Hangcha Group.
A technical partner of Schaeffler in Germany, specializing in the production of thin-walled bushings in accordance with ISO 2795 standards. The wall thickness tolerance is controlled at ±0.02mm, and the ovality is ≤0.005mm. The material is CuZn25Al5 special brass, which has better anti-seizure performance than ordinary bronze and is used for rotating brackets of medical CT machines.
Can metric bronze sleeves be used in high temperature environments?
Some materials such as aluminum bronze or self-lubricating graphite inlaid bronze sleeves can withstand temperatures up to 250°C, but the specific operating temperature is also affected by factors such as lubrication method and load. The ambient temperature and continuous working time should be clarified when selecting.
Do metric sleeves need lubrication?
Most bronze sleeves require external lubrication (such as oil or grease); self-lubricating types (such as graphite or oil-containing types) can also be selected, which are suitable for oil-free or difficult-to-maintain environments. Good lubrication can extend service life and reduce noise.
How to determine whether a metric bronze sleeve is worn?
If there is abnormal noise, increased gap, heat or surface scratches during operation, it is a sign of wear. The change in inner diameter can be measured by tools such as plug gauges and micrometers, and replaced if necessary.
Are metric sleeves suitable for export?
Very suitable. Because they meet international standard sizes, they are suitable for equipment in Europe, America, Southeast Asia, South America and other regions. Many Chinese suppliers have passed ISO, CE and other certifications and have export qualifications and experience.
What are the precautions for packaging and transportation of metric bronze sleeves?
Anti-rust treatment should be carried out before leaving the factory, and the packaging should be plastic bags + cartons or wooden boxes to prevent shock and moisture. Avoid heavy pressure and impact during transportation, and keep them dry when stored for a long time to prevent oxidation and oil volatilization.