SEW S47DRN90L4 Helical-Worm Right-Angle Gearmotor
The SEW S47DRN90L4 is a versatile, medium-capacity right-angle helical-worm gearmotor engineered for smooth power transmission, quiet running noise, and high operational reliability[cite: 21]. Combining a primary helical gear stage with a robust worm wheel set, the S47 delivers significantly higher mechanical efficiency than traditional standalone worm gearboxes[cite: 21]. Available in complete structural configurations (foot-mounted S47, hollow shaft SA47, B5 flange SF47/SAF47, B14 flange SAZ47, shrink disc SH47, and TorqLOC® keyless clamping system ST47)[cite: 21], it is widely utilized across material handling conveyors, rotary tables, packaging machinery, and industrial automation lines[cite: 21].
Technical Specifications
| Model / Part Number | S47DRN90L4[cite: 21] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 21] |
| Gear Unit Type | S Series (Helical-Worm Gear Unit, Right-Angle Output)[cite: 21] |
| Motor Type | DRN90L4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 21] |
| Rated Motor Power (kW) | 1.5 kW (Standard)[cite: 21] |
| Output Speed / Ratio | Customizable via gearbox options (Contact for ratio details)[cite: 21] |
| Mounting & Shaft Form | Foot-mounted, Flange B5/B14, Solid Shaft, Hollow Shaft with Keyway/Shrink Disc/TorqLOC®[cite: 21] |
Documentation & Resources
SEW S47 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 47 helical-worm gearboxes[cite: 21]. Review supported mechanical mountings, current IE1-IE4 motor pairings, and factory protection options:
| Gear Unit Mounting / Layout Design | Frame Size | Matched Motor Series & Powers | Optional Factory Accessories |
|---|---|---|---|
| S47 (Foot-Mounted Solid Shaft)[cite: 21] | Size 47[cite: 21] | DRN Series (IE3 Premium: 63MS4 to 100L4 / 0.18 kW - 3.0 kW)[cite: 21] | /BE (Fail-Safe Disc Brake) |
| SA47 (Hollow Shaft with Keyway)[cite: 21] | Size 47[cite: 21] | DRS Series (IE1 Standard Efficiency)[cite: 21] | /TF (PTC Thermistor Thermal Protection) |
| SF47 / SAF47 (B5 Flange Output)[cite: 21] | Size 47[cite: 21] | DT / DV Series (Legacy Retrofit Motors: DT63 to DV100)[cite: 21] | /TH (Thermostat Switch Control) |
| SAZ47 / SHZ47 (B14 Face Flange)[cite: 21] | Size 47[cite: 21] | DFT / DFV Series (ATEX Explosion-Proof Executions)[cite: 21] | /RS (Mechanical Backstop / Anti-Runback) |
| SH47 / ST47 (Shrink Disc / TorqLOC®)[cite: 21] | Size 47[cite: 21] | CT / CV Series (Inverter-Duty Servo Drives)[cite: 21] | /V (Forced Cooling Fan Attachment) |
Legacy SEW Motor Replacement & IE3 DRN Upgrade Guide
Obsolete SEW motor ranges (DT63, DT71, DT80, DT90, DV100) installed on S47 gearboxes can be seamlessly replaced with current IE3 Premium Efficiency DRN motors[cite: 21]. Refer to the cross-reference mapping below for 1-to-1 retrofitting:
| Legacy Motor Code (Obsolete) | Efficiency Level | Current IE3 Replacement Motor | Rated Power (kW) | Mechanical Compatibility & Retrofit Notes |
|---|---|---|---|---|
| DT63K4 / DT63L4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN63M4 IE3 Upgrade | 0.18 kW - 0.25 kW[cite: 21] | Direct 1-to-1 flange & shaft match on S47 gearboxes. Lower energy loss. |
| DT71D4 / DT71C4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN71MS4 / DRN71M4 IE3 Upgrade[cite: 21] | 0.37 kW - 0.55 kW[cite: 21] | Identical mounting dimensions; direct drop-in replacement. |
| DT80K4 / DT80N4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN80MK4 / DRN80M4 IE3 Upgrade[cite: 21] | 0.55 kW - 0.75 kW[cite: 21] | Flange & shaft dimensions identical. Check terminal box position. |
| DT90S4 / DT90L4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN90S4 / DRN90L4 IE3 Upgrade[cite: 21] | 1.1 kW - 1.5 kW[cite: 21] | Identical shaft centerline height & mounting pattern. Standard S47 pairing[cite: 21]. |
| DV100M4 / DV100L4[cite: 21] | IE1 / IE2 Efficiency[cite: 21] | DRN100LS4 / DRN100L4 IE3 Upgrade[cite: 21] | 2.2 kW - 3.0 kW[cite: 21] | Maximum power capacity pairing for S47 series. Drop-in replacement unit[cite: 21]. |
Expert Selection & Retrofit Engineering Notes
When retrofitting an existing application featuring an obsolete DT63, DT71, DT80, DT90, or DV100 motor[cite: 21], upgrading to an IE3 DRN motor ensures complete dimensional interchangeability while substantially reducing operating temperatures and energy costs. Simply send us your existing SEW serial number or nameplate code (including options like BE brake, TF thermistor, or RS backstop), and our engineering team will provide a 100% compliant replacement specification and quotation.
Core Benchmark Model Standard Configurations
- S47 DRN63M4 (0.25 kW)[cite: 21]
- S47 DRN71M4 (0.55 kW)[cite: 21]
- S47 DRN80M4 (0.75 kW)[cite: 21]
- S47 DRN90S4 (1.1 kW)[cite: 21]
- S47 DRN90L4 (1.5 kW)[cite: 21]
- S47 DRN100LS4 (2.2 kW)[cite: 21]
- S47 DRN100L4 (3.0 kW)[cite: 21]
- SA47 DRN80M4 (0.75 kW)[cite: 21]
- SA47 DRN90L4 (1.5 kW)[cite: 21]
- SF47 DRN90L4 (1.5 kW)[cite: 21]
- SAF47 DRN90L4 (1.5 kW)[cite: 21]
- SAF47 DRN100LS4 (2.2 kW)[cite: 21]
- SAZ47 DRN80M4 (0.75 kW)[cite: 21]
- SH47 DRN90L4 (1.5 kW)[cite: 21]
- ST47 DRN100L4 (3.0 kW)[cite: 21]
- S47 DT90L4 (DT Replacement)[cite: 21]
- SA47 DT90L4 (DT Replacement)[cite: 21]
- SAF47 DV100M4 (DV Replacement)[cite: 21]
- SAZ47 DT80N4 (DT Replacement)[cite: 21]
- SH47 DV100L4 (DV Replacement)[cite: 21]
