Product Overview
The SEW-EURODRIVE S47 series represents a high-efficiency leap in right-angle drive technology. By combining a helical gear stage with a worm gear stage, the S47 achieves significantly higher efficiency than pure worm gear units. When coupled with the DRN90S4 IE3 premium efficiency motor, this drive package offers a sustainable, low-noise solution for industrial environments requiring reliable torque transmission in a compact footprint. The S47 is specifically engineered for applications where space is at a premium but durability cannot be compromised.
Detailed Technical Specifications
| Category | Parameter | Value / Specification |
| Mechanical | Max Output Torque (Ma) | 170 Nm |
| Gearbox Efficiency | Approx. 70% - 91% (Ratio dependent) | |
| Output Shaft Dia. | 25 mm (ISO k6 / H7) | |
| Noise Level | Low (Worm gear damping effect) | |
| Electrical | Motor Power (Pn) | 1.1 kW (1.5 HP) |
| Rated Speed (nn) | 1435 RPM (50Hz) / 1745 RPM (60Hz) | |
| Efficiency Class | IE3 (Premium) | |
| Protection Rating | IP55 (Standard) / IP66 (Optional) | |
| Ambient | Temp Range | -20C to +40C |
Complete Model Selection and Comparison Table
| Complete Model Name | Mounting Type | Output Style | Key Options | Ideal Application |
| S47 DRN90S4 | Foot-mounted | Solid Shaft | Standard | Small floor conveyors |
| SF47 DRN90S4 | B5 Flange | Solid Shaft | Standard | Machine-side attachment |
| SA47 DRN90S4 | Torque Arm | Hollow Shaft | No coupling | Compact direct drives |
| SAF47 DRN90S4/BE2 | B5 Flange | Hollow Shaft | BE2 Brake | Incline conveyors / Lifts |
| SA47 DRN90S4/TF | Torque Arm | Hollow Shaft | Thermistor | High-viscosity mixing |
Component Architecture
The S47-DRN90S4 assembly is built on a modular platform. The primary helical stage performs the initial speed reduction, which allows the secondary worm stage to operate at a lower input speed, drastically reducing friction and wear on the bronze worm wheel. The DRN90S4 motor features an integrated encoder interface and brake options (such as the BE2 brake), allowing this specific unit to transition from a simple fixed-speed drive to a high-precision positioning tool with minimal hardware changes.
Target Industries & Applications
- Intralogistics: Ideal for curved belt conveyors and small palletizers where right-angle orientation saves aisle space.
- Food & Beverage: Used in bottling lines and agitators (with optional food-grade lubricants and Viton seals).
- Stage Technology: Frequently selected for hoist and scenery movement due to the quiet helical-worm meshing.
FAQ
1. Can the S47 gearbox be used with a frequency inverter?
Yes, the DRN90S4 motor is fully compatible with SEW MOVITRAC or MOVIDRIVE inverters. For low-speed operation, we recommend checking if an external cooling fan (V) is required to prevent motor overheating.
2. Is the S47 self-locking?
Due to the high-efficiency helical-worm design, the S47 is generally not self-locking. For applications requiring the load to be held in place during power-off (like vertical lifts), an integrated BE2 mechanical brake is necessary.
3. What lubrication is standard for this model?
Standard units are filled with mineral oil (CLP). However, for extreme temperature variations or food-grade requirements, synthetic oil (CLP HC) or food-grade oil (CLP FH) can be specified at the time of order.
Quiet, Space-Saving, and Reliable
The SEW S47-DRN90S4 IE3 is a balanced right-angle drive that offers the smoothness of a worm gear with the efficiency of modern helical engineering. Its modularity and IE3 motor ensure it meets both mechanical demands and energy regulations.
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