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Welcome to Hebei Speed Torque Transmission Technology Co., Ltd. – your trusted partner for high-performance mechanical transmission components. Established in 2017, we operate a modern factory covering 3,000–5,000 m2 with 101–200 skilled employees. Our annual export value exceeds US$5–10 million, serving markets across North America, South America, Europe, Africa, Oceania, and Asia. We are proud to present our YL Type Rigid Flange Coupling, a precision-engineered solution designed for demanding power transmission applications where zero backlash, accurate alignment, and robust torque transfer are critical.
This rigid flange coupling is manufactured from high-strength carbon steel or ductile iron, complying with ISO9001 quality management standards. Each unit undergoes strict inspection to ensure dimensional accuracy, surface finish, and dynamic balance. Whether you need to connect motors to pumps, compressors, gearboxes, or generators, our YL coupling delivers reliable, long-lasting performance even under high loads and continuous operation.
Key Features & Technical Advantages
Rigid one-piece flange design – provides maximum torsional stiffness, eliminates backlash, and maintains precise angular alignment between shafts.
High torque transmission capacity – optimized flange thickness and bolt pattern allow the coupling to handle heavy shock loads without deformation.
Easy installation and maintenance – split hub (optional) and pre-drilled bolt holes simplify mounting; no lubrication required.
Excellent concentricity – precision-machined mating surfaces ensure runout less than 0.02 mm, reducing vibration and bearing wear.
Customizable bore diameters – available from 10 mm to 100 mm (keyway or spline) to fit standard shafts.
Versatile surface treatment – standard painted finish or anti-corrosion coating for harsh environments.
Balanced design – statically and dynamically balanced options available for high-speed applications up to 4000 RPM.
Technical Specifications (Representative Sizes)
| Model | Outer Dia. (D) | Bore Range (d) | Length (L) | Torque (Nm) | Max Speed (RPM) |
|---|---|---|---|---|---|
| YL5 | 65 mm | 10–25 mm | 40 mm | 35 Nm | 4000 |
| YL8 | 100 mm | 20–40 mm | 60 mm | 120 Nm | 3600 |
| YL12 | 150 mm | 30–60 mm | 85 mm | 450 Nm | 3000 |
| YL20 | 230 mm | 50–90 mm | 115 mm | 1500 Nm | 2500 |
| YL30 | 300 mm | 70–100 mm | 145 mm | 5000 Nm | 2000 |
Note: Above specifications are typical. Custom bore sizes, keyway dimensions, and flange patterns are available upon request. Contact our technical team for tailored solutions.
Benefits for Your Application
Reduced downtime – precise fit and robust construction minimize shaft misalignment failures.
Energy efficiency – rigid coupling eliminates energy loss from slippage or flexing, improving overall system efficiency.
Extended equipment life – lower vibration and bearing stress protect connected machinery.
Cost-effective – competitive pricing with long service life reduces total cost of ownership.
Global compatibility – metric and imperial bore sizes, keyways per DIN, JIS, ANSI standards.
Quality Assurance & Company Strength
At Hebei Speed Torque, quality is our top priority. Our entire production process – from raw material inspection to final balancing and packaging – is conducted under an ISO9001:2015 certified quality management system. We employ advanced CNC machining centers, dynamic balancing machines, and coordinate measuring machines (CMM) to ensure every coupling meets strict tolerances. With over 101 dedicated professionals and a factory space of 3,000–5,000 square meters, we have the capacity to deliver large orders on time.
Our annual export value of US$5 million to US$10 million testifies to the trust we have earned from customers worldwide. We ship through major Chinese ports including Shanghai, Tianjin, and Qingdao, ensuring fast and reliable logistics to North America, South America, Europe, Africa, Oceania, the Middle East, and Southeast Asia. Whether you need a standard YL coupling or a custom-engineered solution, we are ready to support your project.
Choose Hebei Speed Torque for your next coupling requirement – we combine technical expertise, rigorous quality control, and responsive customer service to deliver products that exceed expectations. Request a quote or sample today and experience the difference in precision and reliability.
Frequently Asked Questions (FAQs)
Q1: What materials are used in YL rigid flange couplings?
A: Our standard material is high-strength 45# steel (carbon steel) or QT450-10 ductile iron. Stainless steel and alloy steel options are available for corrosive or high-temperature environments upon request.Q2: Can the coupling accommodate shaft misalignment?
A: Rigid flange couplings are designed for precise alignment and do not compensate for angular, parallel, or axial misalignment. For misaligned shafts, we recommend flexible couplings. However, our YL coupling ensures zero backlash when the shafts are properly aligned.Q3: What is the maximum operating temperature?
A: Standard carbon steel couplings can operate from -30°C to +120°C. For higher temperatures, please specify your requirements and we will suggest suitable materials.Q4: Do you offer custom keyways or special bore sizes?
A: Yes, we offer custom machining for bore diameter, keyway dimensions (square, rectangular, or spline), and extra bolt holes. Lead time may vary depending on complexity.Q5: What is the typical lead time for standard YL couplings?
A: For standard sizes and quantities, lead time is typically 7–15 working days after order confirmation. Custom orders may require 20–30 days. We also maintain a small stock for fast delivery.Q6: Is dynamic balancing required for high-speed applications?
A: Yes, for applications exceeding 3000 RPM, we recommend dynamic balancing to G2.5 grade. This service is available as an option. Please inform us of your speed requirements.Q7: How do I choose the correct YL coupling size?
A: You need to know the shaft diameters, transmitted torque, and maximum RPM. Our technical team can help you select the appropriate model based on your power and safety factor. Refer to the torque table above as a starting point.Q8: What packaging and shipping options do you offer?
A: Each coupling is individually wrapped with anti-rust paper and packed in wooden cases or cartons suitable for sea freight. We ship FOB from Shanghai, Tianjin, or Qingdao. Express delivery (DHL, FedEx) is available for urgent small orders.
Contact us today for a competitive quotation!
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