SEW R37DRN80M4 Helical Inline Gearmotor
The SEW R37DRN80M4 is a versatile, highly efficient inline helical gearmotor engineered for medium-duty industrial applications requiring fine speed ratios, high mechanical efficiency, and long operational service life[cite: 26]. Featuring durable thermal performance and versatile mounting styles (foot-mounted R37/RX57, B5/B14 flange RF37/RXF57, and solid shaft)[cite: 26], it is widely deployed across conveyor systems, packaging machinery, chemical dosing, and factory automation drives[cite: 26].
Technical Specifications
| Model / Part Number | R37DRN80M4[cite: 26] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 26] |
| Gear Unit Type | R Series (Helical Gear Unit, Inline Output Shaft)[cite: 26] |
| Motor Type | DRN80M4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 26] |
| Rated Motor Power (kW) | 0.75 kW (Standard)[cite: 26] |
| Output Speed / Ratio | Customizable via gearbox options (Contact for ratio details)[cite: 26] |
| Mounting Position | Universal / Foot-mounted, B5/B14 Flange Mounted[cite: 26] |
Documentation & Resources
SEW R37 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 37 multi-stage and Size 57 single-stage helical gearboxes[cite: 26]. 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 |
|---|---|---|---|
| R37 (Foot-Mounted Multi-Stage)[cite: 26] | Size 37[cite: 26] | DRN Series (IE3 Premium: 63M4 to 100L4 / 0.18 kW - 3.0 kW)[cite: 26] | /BE (Fail-Safe Disc Brake) |
| RF37 (B5 / B14 Flange Mounted)[cite: 26] | Size 37[cite: 26] | DRS Series (IE1 Standard Efficiency)[cite: 26] | /TF (PTC Thermistor Thermal Protection) |
| RX57 (Single-Stage Foot Mounted)[cite: 26] | Size 57 (RX Stage)[cite: 26] | DT / DV Series (Legacy Retrofit Motors: DT63 to DV100)[cite: 26] | /TH (Thermostat Switch Control) |
| RXF57 (Single-Stage Flange Mounted)[cite: 26] | Size 57 (RX Stage)[cite: 26] | DFT / DFV Series (ATEX Explosion-Proof Executions)[cite: 26] | /RS (Mechanical Backstop / Anti-Runback) |
| R37 / RF37 (Servomotor Adaptations)[cite: 26] | Size 37[cite: 26] | CT / CV Series (Inverter-Duty Servo Drives)[cite: 26] | /V (Forced Cooling Fan Attachment) |
Legacy SEW Motor Replacement & IE3 DRN Upgrade Guide
Obsolete SEW motor ranges (DT63, DT71, DT80, DT90, DV100) installed on R37 gearboxes can be seamlessly replaced with current IE3 Premium Efficiency DRN motors[cite: 26]. 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: 26] | IE1 / Standard Efficiency[cite: 26] | DRN63M4 IE3 Upgrade | 0.18 kW - 0.25 kW[cite: 26] | Direct 1-to-1 flange & shaft match on R37 gearboxes. Lower energy loss. |
| DT71D4 / DT71C4[cite: 26] | IE1 / Standard Efficiency[cite: 26] | DRN71MS4 / DRN71M4 IE3 Upgrade[cite: 26] | 0.37 kW - 0.55 kW[cite: 26] | Identical mounting dimensions; direct drop-in replacement. |
| DT80K4 / DT80N4[cite: 26] | IE1 / Standard Efficiency[cite: 26] | DRN80MK4 / DRN80M4 IE3 Upgrade[cite: 26] | 0.55 kW - 0.75 kW[cite: 26] | Flange & shaft dimensions identical. Standard R37 pairing. |
| DT90S4 / DT90L4[cite: 26] | IE1 / Standard Efficiency[cite: 26] | DRN90S4 / DRN90L4 IE3 Upgrade[cite: 26] | 1.1 kW - 1.5 kW[cite: 26] | Identical shaft centerline height & mounting pattern. Brake options BE1/BE2. |
| DV100M4 / DV100L4[cite: 26] | IE1 / IE2 Efficiency[cite: 26] | DRN100LS4 / DRN100L4 IE3 Upgrade[cite: 26] | 2.2 kW - 3.0 kW[cite: 26] | Maximum power capacity pairing for R37 series. Drop-in replacement[cite: 26]. |
Expert Selection & Retrofit Engineering Notes
When retrofitting an existing application featuring an obsolete DT63, DT71, DT80, DT90, or DV100 motor[cite: 26], 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
- R37 DRN63M4 (0.25 kW)[cite: 26]
- R37 DRN71MS4 (0.37 kW)[cite: 26]
- R37 DRN71M4 (0.55 kW)[cite: 26]
- R37 DRN80M4 (0.75 kW)[cite: 26]
- R37 DRN90S4 (1.1 kW)[cite: 26]
- R37 DRN90L4 (1.5 kW)[cite: 26]
- R37 DRN100LS4 (2.2 kW)[cite: 26]
- R37 DRN100L4 (3.0 kW)[cite: 26]
- RF37 DRN80M4 (0.75 kW)[cite: 26]
- RF37 DRN90L4 (1.5 kW)[cite: 26]
- RF37 DRN100L4 (3.0 kW)[cite: 26]
- RX57 DRN80M4 (0.75 kW)[cite: 26]
- RX57 DRN90L4 (1.5 kW)[cite: 26]
- RX57 DRN100L4 (3.0 kW)[cite: 26]
- RXF57 DRN90L4 (1.5 kW)[cite: 26]
- R37 DT80N4 (DT Replacement)[cite: 26]
- R37 DT90L4 (DT Replacement)[cite: 26]
- R37 DV100M4 (DV Replacement)[cite: 26]
- RF37 DT80N4 (DT Replacement)[cite: 26]
- RX57 DV100L4 (DV Replacement)[cite: 26]
