SEW S97DRN225S4 Helical-Worm Right-Angle Gearmotor
The SEW S97DRN225S4 is the ultimate, top-tier size in SEW's right-angle helical-worm gearmotor catalog[cite: 23]. Built for heavy-duty industrial machinery, it offers maximum torque output and high overhung load capacities while maintaining remarkably quiet operation and superior mechanical damping[cite: 23]. By combining an initial helical gear reduction with a robust worm gear stage, the S97 delivers significantly enhanced energy efficiency and thermal ratings compared to standard pure worm reducers[cite: 23]. Available across all standardized mounting configurations (foot-mounted S97, hollow shaft SA97, B5 flange SF97/SAF97, B14 flange SAZ97, shrink disc SH97, and TorqLOC® keyless clamping system ST97)[cite: 23], it is ideal for heavy material handling conveyors, industrial mixers, crushing equipment, agitators, and bulk handling systems[cite: 23].
Technical Specifications
| Model / Part Number | S97DRN225S4[cite: 23] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 23] |
| Gear Unit Type | S Series (Helical-Worm Gear Unit, Right-Angle Output)[cite: 23] |
| Motor Type | DRN225S4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 23] |
| Rated Motor Power (kW) | 37.0 kW (Standard)[cite: 23] |
| Output Speed / Ratio | Customizable via gearbox options (Contact for ratio details)[cite: 23] |
| Mounting & Shaft Form | Foot-mounted, Flange B5/B14, Solid Shaft, Hollow Shaft with Keyway/Shrink Disc/TorqLOC®[cite: 23] |
Documentation & Resources
SEW S97 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 97 helical-worm gearboxes[cite: 23]. 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 |
|---|---|---|---|
| S97 (Foot-Mounted Solid Shaft)[cite: 23] | Size 97[cite: 23] | DRN Series (IE3 Premium: 112M4 to 225S4 / 4.0 kW - 37.0 kW)[cite: 23] | /BE (Fail-Safe Disc Brake) |
| SA97 (Hollow Shaft with Keyway)[cite: 23] | Size 97[cite: 23] | DRS Series (IE1 Standard Efficiency)[cite: 23] | /TF (PTC Thermistor Thermal Protection) |
| SF97 / SAF97 (B5 Flange Output)[cite: 23] | Size 97[cite: 23] | DV Series (Legacy Retrofit Motors: DV112 to DV225)[cite: 23] | /TH (Thermostat Switch Control) |
| SAZ97 / SHZ97 (B14 Face Flange)[cite: 23] | Size 97[cite: 23] | DFT / DFV Series (ATEX Explosion-Proof Executions)[cite: 23] | /RS (Mechanical Backstop / Anti-Runback) |
| SH97 / ST97 (Shrink Disc / TorqLOC®)[cite: 23] | Size 97[cite: 23] | CT / CV Series (Inverter-Duty Servo Drives)[cite: 23] | /V (Forced Cooling Fan Attachment) |
Legacy SEW Motor Replacement & IE3 DRN Upgrade Guide
Obsolete SEW motor ranges (DV112, DV132, DV160, DV180, DV200, DV225) installed on S97 gearboxes can be seamlessly replaced with current IE3 Premium Efficiency DRN motors[cite: 23]. 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 |
|---|---|---|---|---|
| DV112M4 / DV132S4 / DV132M4[cite: 23] | IE1 / IE2 Efficiency[cite: 23] | DRN112M4 / DRN132S4 / DRN132M4 IE3 Upgrade[cite: 23] | 4.0 kW - 7.5 kW[cite: 23] | Direct 1-to-1 flange & shaft match on S97 gearboxes. Lower energy loss. |
| DV160M4 / DV160L4[cite: 23] | IE1 / IE2 Efficiency[cite: 23] | DRN160M4 / DRN160L4 IE3 Upgrade[cite: 23] | 11.0 kW - 15.0 kW[cite: 23] | Identical mounting dimensions; direct drop-in replacement. |
| DV180M4 / DV180L4[cite: 23] | IE1 / IE2 Efficiency[cite: 23] | DRN180M4 / DRN180L4 IE3 Upgrade[cite: 23] | 18.5 kW - 22.0 kW[cite: 23] | Flange & shaft dimensions identical. Check terminal box position. |
| DV200L4[cite: 23] | IE1 / IE2 Efficiency[cite: 23] | DRN200L4 IE3 Upgrade[cite: 23] | 30.0 kW[cite: 23] | Identical shaft centerline height & mounting pattern. Standard S97 pairing[cite: 23]. |
| DV225S4[cite: 23] | IE1 / IE2 Efficiency[cite: 23] | DRN225S4 IE3 Upgrade[cite: 23] | 37.0 kW[cite: 23] | Maximum power capacity pairing for S97 series. Drop-in replacement unit[cite: 23]. |
Expert Selection & Retrofit Engineering Notes
When retrofitting an existing application featuring an obsolete DV112, DV132, DV160, DV180, DV200, or DV225 motor[cite: 23], 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
- S97 DRN112M4 (4.0 kW)[cite: 23]
- S97 DRN132S4 (5.5 kW)[cite: 23]
- S97 DRN132M4 (7.5 kW)[cite: 23]
- S97 DRN160M4 (11 kW)[cite: 23]
- S97 DRN160L4 (15 kW)[cite: 23]
- S97 DRN180M4 (18.5 kW)[cite: 23]
- S97 DRN180L4 (22 kW)[cite: 23]
- S97 DRN200L4 (30 kW)[cite: 23]
- S97 DRN225S4 (37 kW)[cite: 23]
- SA97 DRN180M4 (18.5 kW)[cite: 23]
- SA97 DRN225S4 (37 kW)[cite: 23]
- SF97 DRN180L4 (22 kW)[cite: 23]
- SAF97 DRN225S4 (37 kW)[cite: 23]
- SAZ97 DRN180M4 (18.5 kW)[cite: 23]
- SH97 DRN200L4 (30 kW)[cite: 23]
- ST97 DRN200L4 (30 kW)[cite: 23]
- SA97 DV180M4 (DV Replacement)[cite: 23]
- SAF97 DV225S4 (DV Replacement)[cite: 23]
- SH97 DV200L4 (DV Replacement)[cite: 23]
- SAZ97 DV180M4 (DV Replacement)[cite: 23]
