Precision Shaft is high-precision, high-performance core mechanical components independently developed and manufactured by S-SEN Metal. As a professional manufacturer, we leverage advanced production capabilities and implement strict quality control, integrating high-quality raw materials, precision machining processes, and optimized lubrication and sealing systems to achieve product precision levels from DIN P4 to P2. Precision Shafts are widely used in machine tools, industrial robots, precision machinery, and other fields.
Core Product Features
1. Ultra-High Precision Performance
S-SEN factory employs advanced grinding and polishing processes to finely machine precision shafts. Product precision consistently reaches DIN P4 level, with ultra-high precision models reaching DIN P2 level, fully meeting the stringent precision requirements of high-end equipment. The accompanying bearings achieve P4A level rotational accuracy and SP/UP level standards, effectively eliminating errors during equipment operation and ensuring stable operation of high-precision equipment. Suitable for applications requiring extremely high precision, such as aerospace component processing and precision instrument manufacturing.
2. Premium Material & Professional Heat Treatment
To ensure the durability and stability of S-SEN precision shafts, we select high-purity alloy steel and stainless steel as raw materials, controlling product quality from the source. Simultaneously, professional heat treatment processes (such as surface hardening) effectively improve the product's fatigue resistance and wear resistance, allowing S-SEN precision shafts to maintain stable performance under harsh conditions such as high temperature, high load, and high dust. As a responsible supplier, we rigorously control every step of material selection and heat treatment to extend product lifespan and help customers reduce equipment maintenance costs.
3. Strict Processing Precision Control
We strictly adhere to DIN standards, controlling the dimensional deviations of S-SEN precision shafts at the micron level. Through ultra-precision grinding processes, we optimize the surface roughness of our products, achieving a surface roughness of Ra≤0.2μm, superior to the precision and surface quality of ordinary precision shafts. This meticulous processing control allows S-SEN precision shafts to meet the demands of ultra-high precision equipment such as aerospace equipment and precision machine tools, ensuring smooth and accurate transmission processes.
4. Efficient Lubrication & Sealing System
Our S-SEN precision shafts are equipped with high-quality grease and professional sealing devices. The grease maintains excellent lubrication performance under high-speed and high-temperature environments, effectively reducing frictional wear between the shaft and other components. The professional sealing device effectively prevents dust and impurities from entering the shaft, avoiding component wear and further extending the service life of S-SEN precision shafts. This allows them to adapt to diverse working environments and improves the overall operational stability of equipment.
5. Full-Size Adaptability
To meet the needs of customers in various industries worldwide, our S-SEN precision shafts cover a wide range of specifications, with diameters ranging from 5mm to 500mm and lengths customizable (0.5m to 12m). Whether it's a small precision shaft required for small to medium-sized precision instruments or a large precision shaft required for heavy equipment, we can provide a precisely compatible product, eliminating the need for customers to perform additional secondary processing and improving procurement and usage efficiency.
6. Traceable Quality Control
We have established a full-process quality traceability system, from spectral testing of raw materials upon warehousing to every processing step in the production process, and finally to full-dimensional inspection of finished products before shipment. Detailed data records are kept for each step, ensuring the traceability of the quality of every S-SEN precision shaft. We are equipped with professional testing equipment to comprehensively test the precision, hardness, and surface quality of our products, ensuring a product qualification rate of over 99.8%.
1. Processing Technology Advantages
We have introduced advanced production equipment such as German CNC grinding machines and Japanese high-precision turning centers to achieve fully digital processing of S-SEN precision shafts, reducing human error and improving the stability of product precision. Our independently developed "multi-segment straightening + dynamic compensation" process can control the straightness error of the shaft to within 0.003mm/m and the coaxiality error to no more than 0.005mm, reaching international advanced levels. Simultaneously, we employ a triple surface treatment process of "ultra-precision grinding + polishing + hard chrome plating" to further enhance the wear resistance and surface finish of our products. 2. R&D Advantages
We have a professional R&D team that invests 8% of our annual revenue in the R&D and product optimization of S-SEN precision shafts. We have accumulated numerous patents related to shaft processing and continuously optimize processing techniques and product structure. For the specific needs of different industries, we can quickly complete the design and prototyping of non-standard precision shafts, completing sample development within 3 working days. Our mass production cycle is 40% shorter than the industry average, meeting customers' rapid procurement needs.
3. Heat Treatment Technology Advantages
For S-SEN precision shafts made of different materials, we have developed customized heat treatment processes such as "vacuum quenching + low-temperature tempering" and "high-frequency induction hardening." This ensures shaft hardness uniformity ≤ ±1HRC, surface hardness reaching HRC60 or higher, and impact resistance improved by 40% compared to traditional processes. Through scientific heat treatment processes, we effectively improve the product's fatigue resistance and wear resistance, extend product lifespan, and reduce customer maintenance costs.
| Parameter Item | Specification |
| Precision Grade | DIN P4 - P2 |
| Material | High-purity Alloy Steel, Stainless Steel |
| Surface Roughness | Ra≤0.2μm |
| Diameter Range | 5mm - 500mm |
| Length Range | 0.5m - 12m |
| Heat Treatment | Case Hardening, Vacuum Quenching, etc. |
| Bearing Matching Precision | P4A Rotational Precision, SP/UP Grade |
| Lubrication System | High-quality Lubricating Grease |
| Sealing Device | Professional Sealing Components |
| Qualified Rate | ≥99.8% |




1. Logistics Follow-up
We ensure timely delivery of goods, tracking their location in real time, predicting arrival times, and promptly identifying any anomalies during transit. For issues such as customs inspections and cargo damage, we will respond promptly and handle them efficiently to ensure your goods arrive smoothly.
2. Product Installation
We provide customers with detailed product installation manuals and online installation guidance to help them successfully install and debug S-SEN precision shafts, resolving any problems encountered during installation and ensuring the product is ready for normal use.
3. Customization Service
For customers' specific needs, we offer customized solutions, providing professional technical support throughout the entire process from product design and sample production to mass production. This ensures that the customized S-SEN precision shafts are precisely adapted to the customer's application scenario and meet their individual needs.
4. After-sales Maintenance
We have established a comprehensive after-sales maintenance system to provide customers with after-sales consultation and maintenance services. For any problems encountered by customers during the use of S-SEN precision shafts, we will respond promptly and arrange professional technicians to resolve them, ensuring normal production for our customers.
1. Can the precision grade of S-SEN precision shafts be customized?
Yes. Our S-SEN precision shafts have a default precision grade of DIN P4. We can also customize ultra-high precision products up to DIN P2 grade according to customers' specific needs, meeting the stringent precision requirements of different industries and scenarios.
2. What material options are available for your S-SEN precision shafts?
We mainly offer S-SEN precision shafts made of high-purity alloy steel and stainless steel. We can also customize products made of other special materials according to customers' usage scenarios and needs, ensuring product durability and adaptability.
3. Are there any discounts for bulk purchases of S-SEN precision shafts?
Yes. We offer exclusive preferential policies for bulk purchase customers; the larger the purchase volume, the greater the discount. We also provide priority production and delivery services for bulk purchase customers, ensuring they receive the products they need in a timely manner.
4. What is the product delivery cycle?
For standard-specification S-SEN precision shafts, the delivery cycle is 7-15 working days. For customized products, the delivery cycle depends on the product specifications, quantity, and process complexity, generally 15-30 working days. We will strive to shorten the delivery cycle to meet customer needs.
5. Is the product guaranteed?
Yes. Our S-SEN precision shafts undergo rigorous quality testing and are guaranteed for 12 months. During the warranty period, if the product suffers from non-human-caused quality problems, we will replace or repair it free of charge.