- Home
- >
- Products
- >
- Motor Winding Nozzle
- >
Motor Winding Nozzle
SIPU high-precision motor winding nozzles are made of tungsten carbide and heat-treated alloy steel, delivering outstanding hardness and wear resistance. With fine polished inner bore, our guides minimize friction, avoid wire breakage and ensure smooth feeding during high-speed coil winding. Custom sizes and various styles are available for motors, relays and solenoid valves, with full quality control to support long-term stable mass production.
- SIPU
- CHINA
- Information
Product Overview
Automotive Motors: Stators and rotors for new energy vehicles (NEV).
Industrial Motors: Servo motors, spindle motors, and BLDC motors.
Electromagnetic Components: Solenoid valves, relay coils, and inductors.
Premium Material Options
Super Hard Alloy (Tungsten Carbide)
Hardness: Up to HRC 90°.
Application: Ideal for ultra-high-speed winding and abrasive wire types. Offers exceptional service life and maintains dimensional accuracy over long production runs.
High-Quality Alloy Steel (Vacuum Heat Treated)
Hardness: HRC 60° - 62°.
Application: A cost-effective solution for standard winding applications, providing excellent toughness and durability.
Key Features & Advantages
Mirror-Finish Inner Bore: The inner hole undergoes fine grinding and specialized polishing processes. This ensures a burr-free, smooth surface that significantly reduces friction, preventing enamel peeling and wire breakage.
Versatile Configurations: Available in Single-hole, Double-hole, and Multi-hole designs. Outlet shapes can be customized to Flat, Oval, or Round profiles to match specific coil winding patterns.
100% Quality Assurance: Every nozzle undergoes a rigorous mock winding test and is inspected under high-magnification microscopy. We guarantee the roundness, concentricity, and surface roughness meet strict international standards.
Custom Engineering: We provide full OEM/ODM services. Whether you need a specific length, diameter, or a unique tip shape, SIPU can manufacture it to fit your machine model perfectly.


Frequently Asked Questions (FAQ)
Q1: How do I choose between Carbide and Alloy Steel nozzles?
A: If your production involves very high speeds (e.g., over 10,000 RPM) or requires extremely long tool life without changing parts, Carbide (HRC 90°) is the best choice. For general-purpose winding with standard speeds, Alloy Steel (HRC 60°) offers excellent performance at a more competitive price point.
Q2: Can you customize the nozzle if I only have a worn-out sample?
A: Yes. SIPU has a professional reverse engineering team. You can send us your worn-out sample or a hand-drawn sketch, and we will measure the critical dimensions to reproduce a new nozzle that fits your machine perfectly.
Q3: What is the "Mock Winding Test" mentioned in your quality control?
A: Unlike suppliers who only check dimensions, SIPU actually runs the nozzle on a winding machine with enameled wire before shipping. This ensures the wire feeds smoothly and confirms there is absolutely no damage to the wire insulation.
Q4: What is the typical lead time for custom nozzles?
A: For standard customized designs, our lead time is typically 7-15 working days. For urgent orders, please contact our sales team to discuss expedited production options.
Q5: Do you offer nozzles for specific machine brands (e.g., Japan/Italy/Germany machines)?
A: Yes, we have a comprehensive database of nozzle specifications for most major winding machine brands. We can provide direct replacements that perform equal to or better than the original parts.