Rotor Core

HAWEN focuses on providing Quality Rotor cores with advanced precision manufacturing expertise. Its Stator Core features reliable performance for robotic arms and new energy vehicles. As a professional manufacturer, we offer customized services to meet the needs of buyers in industrial automation and energy sectors.

Product Specification

Product Application Fields

HAWEN (Trilon) is an enterprise with more than 20 years of deep engagement in the machinery industry. Since 2015, we have focused on the R&D and production of stator cores, which are mainly used for joint protection of robotic arms and in the energy industry. Our stator cores are precision-machined from 20# Carbon Steel and 42CrMo Alloy Steel.

As a fundamental component of various electric motors in the industrial sector, stator cores are applied to robotic arms, compressors and other equipment. They realize high-efficiency electromechanical energy conversion, supporting automated production and process control.

In the energy and power industry, stator cores are widely used in power generation equipment such as wind turbines and steam turbines. The stator cores for wind turbines adopt a special structural design with open skewed slots and ventilation slot plates to optimize heat dissipation, effectively reduce temperature rise and electromagnetic loss, and improve equipment performance and service life.

In transportation and emerging technologies, stator cores are key components of motors for new energy vehicles and servo motors for robots. Their high-efficiency design directly affects the power density and energy efficiency of drive systems. The technical core of stator cores lies in material and structural optimization.

Our products cover a wide range of industries, mainly serving the field of robotic arm joint protection, and we have the capability of high-precision and precision manufacturing.

Product Application Equipment and Main Customers

The above products are mainly applied to motors of industrial robotic arms, with core customers including Nidec, Midea, Haier and other renowned enterprises.

Technical Parameters: 20# Carbon Steel Stator Core

Technical Parameters: 42CrMo Alloy Steel Stator Core

Core Advantages

Manufacturing Resources and Infrastructure

HAWEN continues to invest in automated manufacturing resources to establish a stable production foundation. The facility operates 10 fully automated production lines, supported by an automated surface cleaning line and an automated black oxide treatment line, enabling large-scale and continuous production.

Engineering Expertise and Product Realization

Supported by a mature engineering team, HAWEN participates in customer product development at an early stage. By evaluating industrial system requirements, structural design, and material and process selection, HAWEN ensures products meet functional and performance requirements while remaining manufacturable and scalable.

Precision Machining and Automated Execution

All critical machining processes are performed using high-precision automated equipment. Core dimensional control is stable, with key tolerances such as inner bore tolerance maintained at ≤0.005 mm. Automated execution minimizes human intervention and ensures repeatability and consistency.

End-to-End Quality Management and Data Monitoring

Quality control begins at the raw material sourcing stage, where consistency is strictly managed. During production, online inspection systems monitor key parameters in real time, enabling timely identification and correction of deviations. The process yield rate remains at 99.995%, with 100% inspection before shipment.

Environmentally Responsible Materials and Clean Processes

HAWEN strictly applies environmental requirements in material selection and manufacturing processes. Products are manufactured using 1215 low-carbon free-cutting steel to reduce harmful substances. Surface treatment is carried out through a fully automated black oxide process, preventing manual contamination while improving corrosion resistance and reducing waste. Products comply with ROHS, REACH, and other international environmental regulations.

Customization and System Compatibility

Based on different customer industrial system configurations and operating conditions, HAWEN provides customized and special-shaped designs to ensure proper application fit and operational reliability. Early engineering involvement reduces later modifications and testing efforts.

Production Capacity and Delivery Flexibility

HAWEN’s total monthly capacity reaches approximately 5 million units. With current monthly shipments of 3–4 million units, 40%–60% capacity remains available. This structure supports project scaling, delivery schedule adjustments, and changes in market demand.

Regional Supply Chain and Responsiveness

Located in Zhejiang Province, one of China’s major manufacturing hubs, HAWEN benefits from long-term cooperation with mature local suppliers. Short procurement lead times and stable supply enhance delivery reliability and response speed.

Customer Outcomes and Long-Term Value

Through stable manufacturing resources, efficient engineering execution, and a reliable quality system, HAWEN helps customers achieve cost efficiency, low-noise operation, high qualification rates, and environmental compliance. Choosing HAWEN reduces total costs across development, testing, manufacturing, and after-sales service throughout the product lifecycle.

Material Selection

45# Carbon Steel

45# Carbon Steel is a high-quality carbon structural steel with a carbon content of approximately 0.42% to 0.50%, belonging to the medium carbon steel category. Its material density is 7.85 g/cm³; its chemical composition includes 0.50%-0.80% manganese, 0.17%-0.37% silicon, with strictly controlled impurity elements such as phosphorus and sulfur.Mechanical Properties & Heat Treatment: It has excellent comprehensive mechanical properties, with a tensile strength of not less than 600 MPa, a yield strength of not less than 355 MPa, an elongation of not less than 16%, and a reduction of area of not less than 40%. Due to its poor hardenability, it is prone to cracking during water quenching and has average weldability — preheating before welding and post-weld annealing are required to relieve internal stress. Quenching and tempering (quenching plus high-temperature tempering) in heat treatment can optimize its performance: the quenching temperature is usually about 840°C, the tempering temperature is 560-600°C, and the hardness can reach HRC 22-34.

42CrMo Alloy Steel

42CrMo is an ultra-high strength alloy structural steel renowned for its excellent comprehensive mechanical properties, and is widely used in industrial fields with high requirements for strength and toughness.Its main chemical composition includes 0.38～0.45% carbon (C), 0.90～1.20% chromium (Cr), 0.15～0.25% molybdenum (Mo), and a small amount of silicon (Si) and manganese (Mn). This composition design endows the material with high strength, good toughness, high hardenability and no obvious temper brittleness. After quenching and tempering, it can obtain a high fatigue limit and resistance to multiple impacts, and also exhibits excellent low-temperature impact toughness.Mechanical Properties: Tensile strength σb ≥1080 MPa, yield strength σs ≥930 MPa, elongation δ5 ≥12%, reduction of area ψ ≥45%, impact energy Akv ≥63 J, impact toughness αkv ≥78 J/cm²; hardness in the annealed state is 147~241 HB, and hardness after quenching and tempering can be controlled at ≤217 HBW.

Process Control

● Bore Tolerance Control: Achieving a high precision of ±0.008mm places extremely stringent requirements on processing equipment and process stability. Such a precise tolerance range demands top-tier accuracy of machining equipment (e.g., CNC machine tools), high-quality cutting tools, stable process conditions and reliable fixtures (e.g., temperature control, vibration suppression); any minor deviation may lead to product quality defects.We adopt advanced manufacturing processes to ensure this precision: realized through high-precision measuring instruments (e.g., Coordinate Measuring Machine (CMM), Roundness Tester, Profile Measuring Instrument), strict process control (e.g., Statistical Process Control (SPC)) and a stabilized machining environment, which guarantees batch production consistency.Application Value: In precision transmission systems, bore tolerance directly affects the fitting accuracy between components and shafts, which is critical to transmission efficiency, noise control and product service life — it is a core technical indicator for high-end manufacturing.

We exercise strict quality control throughout the production process to ensure the stability and durability of products during use.

● Material Performance Matching: Strictly control material hardness and heat treatment processes to effectively enhance wear resistance and fatigue strength.

Surface Treatment - Cleaning & Passivation

Stator cores are made of metal materials and operate in harsh environments, which will inevitably cause rust and corrosion of spare parts without proper treatment. Our company has a professional and experienced core R&D team; through years of practical experience and repeated trials, we have developed a dedicated surface treatment formula for this product. We adopt a cleaning and passivation process combined with a fully automatic drying system, with no manual contact with products throughout the entire process. This not only enhances the corrosion resistance of products to meet industry standards, but also reduces the risk of product collision caused by human contact and ensures the operational stability of products.

Other electroplating processes such as general electroplating, zinc plating and nickel plating are also available and can be fully customized according to customer requirements.

Environmental Requirements

All products meet strict environmental protection requirements in terms of raw material selection and surface treatment processes, and are supported by official ROHS and REACH certification reports.

R&D & Customization Capabilities

Our professional R&D and technical team has 20 years of in-depth industry experience. We can fully meet customer requirements, solve their technical pain points according to their specific application scenarios and demands, and customize special-shaped stator cores. We warmly welcome customization per provided drawings, including customized products with designated raw materials and surface treatment processes. We also extend a sincere invitation to overseas visitors to visit our manufacturing factory.

Synergy from the New Organizational Structure

The synergy brought by the new organizational structure enables HAWEN to fully meet customer expectations on the basis of in-depth and effective cooperation.

Domestic Customers

We have established long-term strategic partnerships with domestic customers such as Sanjiang Electric, LG Tianjin and Nidec, with a stable cooperative relationship spanning more than a decade.