Product Overview
SEW RF87 DRN132S4: High-Torque Coaxial Helical Gearmotor for 7.5kW Industrial Drives
The SEW RF87-DRN132S4 is a heavy-duty coaxial helical gearmotor designed for demanding industrial environments where high torque density and space-saving flange mounting are required. Powered by a 7.5 kW (10 HP) DRN132S4 IE3 motor, this unit is engineered to deliver consistent output torque up to 1550 Nm, making it the primary choice for heavy-load automation.
Unlike standard reducers, the RF87 features high-precision gear meshing that ensures an efficiency rating of ≥ 94%. Its robust cast-iron housing and optimized oil-seal system provide reliable 24/7 operation in harsh conditions, from mining conveyors to large-scale chemical agitators. Whether you are looking for a drop-in replacement or a core drive for new OEM machinery, the RF87 provides the structural rigidity needed for high-cycle industrial duty.
Product parameters
| Parameter | Specification |
|---|---|
| Product Name | SEW RF87 DRN132S4 Heavy Duty Gearbox Reducer |
| Gearbox Series | SEW R Series |
| Model | RF87 DRN132S4 |
| Gear Type | Helical Gear Reducer (Coaxial Design) |
| Motor Type | DRN132S4 Asynchronous Motor |
| Motor Efficiency Class | IE3 High Efficiency |
| Number of Poles | 4 Pole |
| Rated Power | 5.5 kW |
| Rated Voltage | 220–230 V Δ / 380–400 V Y (50 Hz)254–266 V Δ / 440–460 V Y (60 Hz) |
| Frequency | 50 Hz / 60 Hz |
| Output Speed | Approx. 63 rpm (50 Hz)Approx. 76 rpm (60 Hz) (depending on gear ratio) |
| Gear Ratio Range | Wide ratio range available (customizable) |
| Maximum Output Torque | Up to approx. 1550 Nm |
| Mounting Position | Foot-mounted / Flange-mounted |
| Output Shaft Type | Solid shaft with keyway |
| Lubrication | Factory-filled oil lubrication |
| Protection Class | IP55 (IP65 / IP66 optional) |
| Ambient Temperature | -20 °C to +40 °C |
| Duty Type | Continuous duty (S1) |
| Certification | CE, ISO 9001 |
| Application Area | Conveyor systems, material handling, packaging machinery, industrial automation |
Technical Highlights
- Premium Efficiency: The integrated DRN132S4 motor complies with IE3 global energy standards, significantly lowering power consumption in high-duty cycle (S1) applications.
- High Load Capacity: The RF87 series is built with reinforced internal bearings, allowing it to handle substantial overhung loads on the output shaft without compromising gear alignment.
- Versatile Mounting: The RF series (flange-mounted) provides a streamlined coaxial output, perfect for direct integration into machine frames where a foot-mounted R87 might not fit.
- Global Voltage Support: Supports multi-range voltages (380V-420V / 440V-460V), ensuring the gearmotor is ready for deployment in both European and North American power grids.
Industrial Applications
The SEW RF87 DRN132S4 is built for "force-intensive" applications where stability under load is more critical than raw speed:
- Heavy-Duty Material Handling: Used in long-distance belt conveyors and bucket elevators where the 7.5kW power is needed to overcome high starting inertia and friction.
- Industrial Mixing & Agitation: The RF87's flange-mounted design is ideal for top-entry mixers in chemical processing, capable of sustaining continuous axial thrust and radial forces.
- Automated Palletizing Systems: Provides the high torque required for lifting heavy pallet loads in logistics centers, ensuring smooth acceleration and deceleration via VFD control.
- Waste Management: Frequently utilized in large-scale shredders and compactors due to its ability to handle sudden shock loads without internal gear fatigue.
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FAQ
Q1: What is the benefit of the RF87 flange-mounted design over the foot-mounted R87?
A: The RF87 (Flange-mounted) allows for more compact integration by bolting the gearbox directly to the machine wall. This is especially useful in agitator and circular motion applications where a rigid, centered connection is required.
Q2: Can I use this 7.5kW unit with a Variable Frequency Drive (VFD)?
A: Yes. The DRN132S4 motor is fully VFD-compatible. We recommend using an insulated bearing or a thermistor (TF/TH) if the motor will be running at low frequencies for extended periods to ensure thermal protection.
Q3: How do I choose the correct output speed for my project?
A: The RF87 offers a wide range of ratios. Our technical team can help you select a ratio that matches your required RPM (e.g., 63 RPM at 50Hz) to ensure you get the maximum service factor for your specific load.
Q4: Is the gear oil pre-filled for international shipping?
A: Yes, all units are factory-filled with premium CLP mineral oil (or optional synthetic oil) based on your specified mounting position (M1-M6) to ensure the unit is "plug-and-play" upon arrival.
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