Double Start Trapezoidal Screw

Product Features

① Unique Double-Start Thread Design: Adopts 30° trapezoidal thread with dual parallel thread paths, which can achieve higher linear speed at the same rotational speed compared to single-start screws (same pitch), effectively improving the actuation and positioning efficiency of equipment.

② Balanced Mechanical Advantage: While increasing the lead to enhance speed, it avoids the steep thread profile of single-start high-lead screws, maintaining a reasonable helix angle and ensuring balanced load-bearing capacity and transmission stability.

③ Wear-Resistant Synergistic Design: The double-start thread engages the nut through two contact paths, which can evenly distribute wear; matching targeted surface treatments and nut materials effectively compensates for the reduced self-locking performance and potential wear issues caused by the double-start design.

④ High Precision & Consistency: Through advanced thread rolling and CNC machining processes, the thread pitch, lead and profile accuracy are strictly controlled, ensuring consistent linear transmission accuracy in long-term operation, suitable for precision positioning scenarios.

⑤ Wide Specification Compatibility: Covers a full range of standard specifications (major diameter 8mm-40mm, lead 4mm-14mm) and supports customized design, adapting to different industrial application scenarios.

Product Practical Value

① Improve Production Efficiency: The double-start design of the Double Start Trapezoidal Screw enables rapid linear motion at low rotational speed, which is especially suitable for equipment requiring quick actuation (such as rapid-opening clamps, automated dispensing systems, adjustable stages), greatly shortening the operation cycle and improving production efficiency.

② Reduce Equipment Operation Cost: Compared with single-start screws that need high rotational speed to achieve the same linear speed, our double-start trapezoidal screw reduces the load of the driving motor, lowers energy consumption, and extends the service life of the motor and transmission system.

③ Enhance Application Adaptability: It solves the contradiction between "high speed" and "stable load-bearing" in traditional trapezoidal screws, and can be widely used in linear motion systems, automatic machinery, lifting adjustment mechanisms and other fields, especially suitable for scenarios requiring both speed and precision.

④ Lower Maintenance Costs: The balanced wear design and high-quality material matching reduce the wear rate of the screw-nut assembly, extend the service life of the product, reduce the frequency of replacement and maintenance, and lower the overall operation and maintenance costs of the equipment.

⑤ Simplify Equipment Design: The double-start screw can achieve a larger lead without changing the nominal diameter, helping to simplify the structural design of the equipment, reduce the volume of the transmission system, and save installation space.

Synergistic Optimization

The synergistic optimization of the Double Start Trapezoidal Screw and nut becomes paramount. The double-start thread engages the nut over two distinct contact paths, which can distribute wear. Consequently, pairing a surface-treated screw—for instance, with a nitrided layer for wear resistance or a PTFE coating for reduced friction—with a durable nut material such as bronze or engineered polymer seems necessary. This holistic approach is aiming to ensure stubborn performance for longevity and smooth operation, even at higher rotating speeds.

Why Choose Us

① 12-Year Professional Experience in Double-Start Screw Production: We have focused on trapezoidal screw R&D and production for more than 12 years, mastering the core technology of double-start thread forming, and accumulating rich experience in solving the key problems of double-start screws (such as wear control and precision guarantee), which can provide professional solutions for global buyers.

② Advanced Production & Testing Capabilities: Equipped with 10 professional production lines, including advanced thread rolling machines and high-precision CNC lathes, which can accurately control the thread profile and lead accuracy of double-start screws; professional testing equipment (lead gauge, thread profile detector) ensures that each product meets international standards.

③ Strict Quality Control & Traceability: Certified by ISO 9001 quality management system, with a 6-person professional QC team, implementing full-process quality control from raw material selection to finished product delivery; self-developed ERP system tracks the entire production and quality process, ensuring product consistency and traceability.

④ Customized Service & Technical Support: We can provide customized design according to the buyer’s drawings and application needs (including non-standard major diameter, lead, pitch, end machining), and have a professional technical team to provide pre-sales scheme consultation and after-sales installation guidance.

⑤ Proven Market Reputation: We have served more than 5,000 domestic and foreign customers, completed more than 80,000 pieces of overseas orders in the past 3 years, and our double-start trapezoidal screws have been widely recognized in automation, precision machinery and other industries, with stable product quality and reliable after-sales service.

FAQs

1. For vertical application scenarios, how do you solve the problem of reduced self-locking performance of double-start trapezoidal screws?

We provide targeted solutions according to the actual load and application scenario: first, we can match specialized braking mechanisms (customized according to the load size) to prevent back-driving; second, we optimize the surface treatment (such as increasing the friction coefficient of the thread surface) and nut material matching, further improving the anti-back-driving performance, ensuring safe and stable operation in vertical applications.

2. Can you customize double-start trapezoidal screws?

Yes, we support full non-standard customization. You only need to provide detailed requirements (including major diameter, lead, pitch, thread start number, working load, application scenario and installation requirements), our engineering team will design a suitable scheme, produce samples for your test and verification, and carry out bulk production after the sample is confirmed.

3. What is the difference between your double-start trapezoidal screw and single-start trapezoidal screw in terms of service life and maintenance cycle?

Under the same working conditions, our Double Start Trapezoidal Screw has a similar service life to the single-start screw (8,000-12,000 working hours under standard conditions) because of the balanced wear design; the maintenance cycle is the same as the single-start screw (3-6 months of regular inspection), and we will provide detailed maintenance guidelines to help you extend the service life of the product.

4. Do you provide technical parameters and test reports for double-start trapezoidal screws, and can you assist in product selection?

Yes, we provide detailed technical parameters (including lead accuracy, load-bearing capacity, efficiency, wear resistance) and third-party test reports for each specification of double-start trapezoidal screws. Our technical team can also assist you in selecting the most suitable product according to your equipment parameters, working conditions and speed requirements, avoiding improper selection and reducing procurement risks.