SEW S77DRN160M4 Helical-Worm Right-Angle Gearmotor
The SEW S77DRN160M4 is a heavy-duty right-angle helical-worm gearmotor engineered for demanding industrial applications requiring high torque output, smooth low-noise operation, and elevated mechanical reliability[cite: 21]. By combining an efficient helical primary gear stage with a heavy-duty worm gear wheel set, the S77 achieves significantly higher efficiency and thermal capacity than traditional pure worm gearboxes[cite: 21]. Available in versatile mounting styles (foot-mounted, B5/B14 flange, solid shaft, hollow shaft with keyway, shrink disc, and TorqLOC® keyless clamping system)[cite: 21], it is extensively deployed in heavy material handling conveyors, industrial mixers, wastewater treatment agitators, and automated processing lines[cite: 21].
Technical Specifications
| Model / Part Number | S77DRN160M4[cite: 21] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 21] |
| Gear Unit Type | S Series (Helical-Worm Gear Unit, Right-Angle Output)[cite: 21] |
| Motor Type | DRN160M4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 21] |
| Rated Motor Power (kW) | 11.0 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 S77 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 77 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 |
|---|---|---|---|
| S77 (Foot-Mounted Solid Shaft)[cite: 21] | Size 77[cite: 21] | DRN Series (IE3 Premium: 80M4 to 160M4 / 0.75 kW - 11.0 kW)[cite: 21] | /BE (Fail-Safe Disc Brake) |
| SA77 (Hollow Shaft with Keyway)[cite: 21] | Size 77[cite: 21] | DRS Series (IE1 Standard Efficiency)[cite: 21] | /TF (PTC Thermistor Thermal Protection) |
| SF77 / SAF77 (B5 Flange Output)[cite: 21] | Size 77[cite: 21] | DT / DV Series (Legacy Retrofit Motors: DT80 to DV160)[cite: 21] | /TH (Thermostat Switch Control) |
| SAZ77 / SHZ77 (B14 Face Flange)[cite: 21] | Size 77[cite: 21] | DFT / DFV Series (ATEX Explosion-Proof Executions)[cite: 21] | /RS (Mechanical Backstop / Anti-Runback) |
| SH77 / ST77 (Shrink Disc / TorqLOC®)[cite: 21] | Size 77[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 (DT80, DT90, DV100, DV112, DV132, DV160) installed on S77 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 |
|---|---|---|---|---|
| DT80K4 / DT80N4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN80MK4 / DRN80M4 IE3 Upgrade[cite: 21] | 0.55 kW - 0.75 kW[cite: 21] | Direct 1-to-1 flange & shaft match on S77 gearboxes. Lower energy loss. |
| DT90S4 / DT90L4[cite: 21] | IE1 / Standard Efficiency[cite: 21] | DRN90S4 / DRN90L4 IE3 Upgrade[cite: 21] | 1.1 kW - 1.5 kW[cite: 21] | Identical mounting dimensions; direct drop-in replacement. |
| DV100M4 / DV100L4[cite: 21] | IE1 / IE2 Efficiency[cite: 21] | DRN100LS4 / DRN100L4 IE3 Upgrade[cite: 21] | 2.2 kW - 3.0 kW[cite: 21] | Flange & shaft dimensions identical. Check terminal box position. |
| DV112M4 / DV132S4 / DV132M4[cite: 21] | IE1 / IE2 Efficiency[cite: 21] | DRN112M4 / DRN132S4 / DRN132M4 IE3 Upgrade[cite: 21] | 4.0 kW - 7.5 kW[cite: 21] | Identical shaft centerline height & mounting pattern. Standard S77 pairing[cite: 21]. |
| DV160M4[cite: 21] | IE1 / IE2 Efficiency[cite: 21] | DRN160M4 IE3 Upgrade[cite: 21] | 11.0 kW[cite: 21] | Maximum power capacity pairing for S77 series. Drop-in replacement unit[cite: 21]. |
Expert Selection & Retrofit Engineering Notes
When retrofitting an existing application featuring an obsolete DT80, DT90, DV100, DV112, DV132, or DV160 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
- S77 DRN80M4 (0.75 kW)[cite: 21]
- S77 DRN90S4 (1.1 kW)[cite: 21]
- S77 DRN90L4 (1.5 kW)[cite: 21]
- S77 DRN100LS4 (2.2 kW)[cite: 21]
- S77 DRN100L4 (3.0 kW)[cite: 21]
- S77 DRN112M4 (4.0 kW)[cite: 21]
- S77 DRN132S4 (5.5 kW)[cite: 21]
- S77 DRN132M4 (7.5 kW)[cite: 21]
- S77 DRN160M4 (11 kW)[cite: 21]
- SA77 DRN132M4 (7.5 kW)[cite: 21]
- SA77 DRN160M4 (11 kW)[cite: 21]
- SF77 DRN160M4 (11 kW)[cite: 21]
- SAF77 DRN132M4 (7.5 kW)[cite: 21]
- SAF77 DRN160M4 (11 kW)[cite: 21]
- SAZ77 DRN132S4 (5.5 kW)[cite: 21]
- SH77 DRN132M4 (7.5 kW)[cite: 21]
- ST77 DRN160M4 (11 kW)[cite: 21]
- SA77 DV132M4 (DV Replacement)[cite: 21]
- SAF77 DV160M4 (DV Replacement)[cite: 21]
- SH77 DV160M4 (DV Replacement)[cite: 21]
