Understanding the LHS240-24 Tension-Rod-Free Fine Wire Drawing Machine
For wire and cable manufacturers searching for a drawing machinery factory capable of delivering high-capacity, high-speed fine wire production, the LHS240-24 Tension-Rod-Free Fine Wire Drawing Machine, manufactured by Changzhou Dingtian Electrical Machinery Co., Ltd. under the Dingtian brand, is engineered specifically to answer that demand. Positioned within Dingtian's slip-type and tension-rod-free product line, the LHS240-24 is designed as a high-capacity solution with a maximum line speed up to 2,500 m/min, addressing the industry's recurring pain points: severe tension fluctuation in thicker wires, cooling limitations during prolonged high-speed operation, spool changeover downtime, and the need for consistently high-volume output.
Key Technical Specifications and Performance Metrics
The LHS240-24 is built around a clear set of engineering parameters. Its inlet wire blank ranges from 0.55 mm to 1.2 mm, while the outlet finished product covers 0.10 mm to 0.40 mm, supporting a minimum finished wire diameter of 0.10 mm. The machine accommodates a maximum of 24 molds, driven by a cone pulley configuration of Φ240×11 sections, 4 sets, paired with a constant speed pulley of Φ240, 1 set. Power comes from a 15 kW main motor and a 5.5 kW take-up motor, with the whole machine weighing 2.13 T.
In terms of throughput, for 0.2 mm finished copper wire, the LHS240-24 achieves a daily output of about 2,880 km at 2,000 m/min and about 3,600 km at 2,500 m/min, representing a 25% increase in production capacity under the same process and wire specification. This performance profile positions the LHS240-24 as a suitable choice for factories that require both speed and consistency at scale.
Core Features That Address Production Pain Points
Several engineering choices distinguish the LHS240-24 as a practical answer to common fine wire drawing challenges:
- Enhanced dual-inverter closed-loop slip control: This system suppresses tension impact during startup, shutdown, and speed adjustment, helping avoid uneven wire thickness — a frequent issue in thicker wire drawing where mechanical tension fluctuation is more pronounced.
- Reinforced frame: The machine frame is thickened and reinforced with fatigue resistance, supporting round-the-clock uninterrupted production in large cable factories.
- Upgraded cooling and lubrication: Increased spray flow combined with an enlarged circulation oil tank maintains stable lubricant temperature, preventing wire oxidation and blackening during extended high-speed runs.
- Large-capacity spools: Support for large-capacity single spools reduces downtime associated with spool changeover and improves overall line OEE (Overall Equipment Effectiveness).
- Expandability: The LHS240-24 can be easily connected with pay-off machines, annealing machines, and take-up units to form a complete automatic production line, supporting line-level integration for manufacturers scaling toward automated workflows.
These features collectively target the scenario pain points that Dingtian identifies for this product line: tension fluctuation in thicker wires, cooling demands under prolonged operation, and the operational cost of frequent spool changes.
Manufacturer Background and Quality Assurance
Changzhou Dingtian Electrical Machinery Co., Ltd., headquartered at No. 10, Dangnan Industrial Park, Tianning District, Changzhou City, Jiangsu Province, China, positions itself as a manufacturer of wire drawing machines for the electronic wire and wire cable industry, supplying precision ultra-fine and fine wire drawing equipment across servo, slip-type, tension-rod-free, and in-line continuous annealing configurations. The company's strategic focus stems from a clear read of industry pain points: mechanical tension fluctuation causing wire breakage and diameter variation, the high cost of equipment compared with international suppliers, heavy reliance on operator skill, and limited flexibility for precious-metal and specialty-alloy fine wire production.
Dingtian holds a documented quality framework, including Quality Management System Certification (GB/T 19001-2016 idt ISO 9001:2015), Environmental Management System Certification (GB/T 24001-2016 idt ISO 14001:2015), and Occupational Health and Safety Management System Certification (GB/T 45001-2020 idt ISO 45001:2018), all initially issued in 2024 and valid through 2027. The company was also recognized as a Provincial Specialized and Innovative Small and Medium-Sized Enterprise by the Jiangsu Provincial Department of Industry and Information Technology, effective from April 2024 to April 2027. On the innovation side, Dingtian holds granted utility model patents, including one for a reel driving mechanism and wire drawing machine (CN220787693U) and another for a cooling mechanism for a dual variable frequency micro-fine wire drawing machine (CN221086758U), reflecting ongoing engineering investment behind its equipment lineup.
Customer Feedback and Market Validation
Dingtian's broader customer record offers relevant context for evaluating its manufacturing reliability. In one documented case, a long-term Dingtian customer reported that a machine required no major overhaul after 8 years of operation, with the customer citing reliable equipment quality, fast after-sales support, and continuous technical support throughout the cooperation. In another case involving customized micro wire drawing for export products, the customer achieved a finished wire dimensional tolerance of ±0.0006 mm and a surface roughness of Ra ≤ 0.015 μm, passing inspection on the first attempt. That customer further reported an export product qualification rate of 99.8% and a 60% increase in overseas order volume, attributing the results to Dingtian's customization of equipment configuration and process parameters.
These outcomes, while tied to specific customer scenarios rather than the LHS240-24 model exclusively, illustrate the operational philosophy behind Dingtian's manufacturing approach: customized equipment configuration, process parameter optimization, after-sales technical support, and on-site wire trial verification at the Dingtian facility.
Industry Applications
The LHS240-24, as part of Dingtian's tension-rod-free fine wire drawing line, is adapted to serve large enameled wire factories, power auxiliary material manufacturers, and wire harness producers — segments that typically require high-volume, continuous output alongside stable finished wire quality. For manufacturers evaluating a drawing machinery factory partner capable of supporting mass production while managing tension-related quality risks, the LHS240-24's combination of high line speed, reinforced construction, and production-line expandability offers a technically grounded option built on Dingtian's documented engineering capabilities and quality certifications.
https://www.dtwiredraw.com/
Changzhou Dingtian Electrical Machinery Co., Ltd.
