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QRC P (IEC) Foot-Mounted Helical Gear Unit
QRC P (IEC) Foot-Mounted Helical Gear Unit
Features
- IEC-standard motor interface for easy motor integration
- High-strength carburized and precision-ground helical gears
- Lightweight aluminum housing with excellent heat dissipation
- Wide ratio range available from 3.66 to 54
- High torque capability ranging from 120 to 500 Nm
- Compact, low-noise structure suitable for general machinery
- Flexible foot-mounted design for simple alignment and installation
Description
QRC P (IEC) series is a foot-mounted helical gear reducer designed with an IEC-standard motor interface, enabling direct mounting of IEC motors for fast and universal integration. As part of the QRC modular helical gearbox family, the QRC P model features precision-ground helical gears, carburized and hardened tooth surfaces, and a rigid aluminum housing, ensuring smooth transmission, long service life, and low operational noise.
Its foot-mounted base (P type) provides strong structural stability, making it suitable for long-term continuous-duty applications. The modular design supports a wide combination of gear ratios, output shaft options, and motor mounting configurations, allowing users to adapt the gearbox easily to diverse industrial requirements.
The QRC P (IEC) series is ideal for textile machinery, ceramic equipment, food production lines, packaging systems, logistics conveyors, plastics machinery, and various automation environments.
Features
- IEC-standard motor interface
- High-strength carburized and ground helical gears
- Lightweight aluminum housing with excellent thermal performance
- Available in multiple ratios from 3.66–54
- High torque range of 120–500 Nm
- Compact, low-noise structure suitable for universal machinery
- Flexible foot-mounting for easy alignment
Technical Parameters
| Item | Specification |
|---|---|
| Power Range | 0.12 – 4 kW (IEC motor compatible) |
| Reduction Ratio | 3.66 – 54 |
| Max Output Torque | 120 – 500 Nm |
| Mounting Type | Foot-mounted (P type) |
| Motor Interface | IEC-standard (B5 or B14 flange) |
| Gear Type | Helical gears; carburized & hardened |
| Housing Material | Aluminum alloy (small sizes), cast iron optional |
| Input Method | Direct IEC motor mounting |
| Output Type | Solid output shaft (various diameters) |
| Efficiency | High efficiency due to helical gearing |
| Noise Level | Low noise, stable operation |
| Lubrication | Oil lubrication (per frame size specifications) |
| Cooling Method | Natural air cooling |
| Installation Positions | All mounting positions supported |
| Typical Applications | Textile, food, ceramics, logistics, packaging, plastics, automation |
Selection Factors
- Service factor (fs): must match daily running time and start-stop frequency
- Load types:
A: Light shock (Fa ≤ 0.2)
B: Medium shock (Fa ≤ 3)
C: Heavy shock (Fa ≤ 10) - Startup frequency (Z): includes all starts, stops, and speed changes
- Ensure fs selected from application chart ≤ fs allowed in performance table
Application
- Textile machinery
- Conveying and packaging systems
- Light industrial automation
- Ceramic and food processing equipment
- Plastic shaping and material handling
FAQs
Yes. NUODUN’s core competitiveness lies in the synergistic advantage of “customization + system integration.” We support structural customization, torque customization, input flange customization, mounting interface customization, stroke customization and more for products such as planetary gearboxes, screw jacks, electric cylinders, and gearboxes. The typical lead time for standard non-standard customization is 7–20 days, while more complex engineered projects are usually delivered within 3–6 weeks.

Our engineering strength comes from long-term R&D investment, CAE simulation, lifetime calculation databases, modular design frameworks, and a mature testing/verification system. This ensures that every customized solution is not only manufacturable, but also reliable under real-world loads — balancing precision, durability, and cost efficiency.







Our products are widely used in photovoltaic manufacturing, semiconductor equipment, automotive production, metallurgy, logistics, medical devices, aerospace, stage automation, and industrial automation — especially where precision positioning, heavy loads, or long service life are required.
All products undergo type testing, torque testing, vibration testing, life testing, noise measurement, and precision inspection. Core components such as gears, screws, and bearings are produced using advanced machining, grinding, heat treatment, and automated assembly processes.
Yes. We offer remote technical support, installation guidance, troubleshooting, selection assistance, and long-term spare parts support for OEM/ODM partners.







