SEW KA77DRN100L4 Helical-Bevel Gearmotor
Brand: SEW-Eurodrive | Series: KA-Series (Hollow Shaft)
The SEW KA77DRN100L4 is a mid-to-heavy industrial helical-bevel gearmotor featuring a hollow shaft design[cite: 14]. Engineered for exceptionally high mechanical efficiency, durable thermal dissipation, and optimal torque density, it is widely utilized in heavy-duty conveyor systems, material handling, hoisting equipment, and industrial automation processing lines[cite: 14].
Technical Specifications
| Model / Part Number | KA77DRN100L4[cite: 14] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 14] |
| Gear Unit Type | KA Series (Helical-Bevel, Hollow Shaft)[cite: 14] |
| Motor Type | DRN100L4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 14] |
| Rated Motor Power (kW) | 3.0 kW (Standard)[cite: 14] |
| Output Speed / Ratio | Customizable via gearbox options (Contact for ratio details)[cite: 14] |
| Mounting Position | Universal / Hollow Shaft with Keyway[cite: 14] |
Documentation & Resources
SEW K77 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 77 helical-bevel gearboxes[cite: 14]. Review supported mechanical mountings, current IE1-IE4 motor pairings, and factory protection options:
| Gear Unit Mounting / Shaft Design | Frame Size | Matched Motor Series & Powers | Optional Factory Accessories |
|---|---|---|---|
| KA77 (Hollow Shaft with Keyway)[cite: 14] | Size 77[cite: 14] | DRN Series (IE3 Premium: 80M4 to 160M4 / 0.75 kW - 11 kW)[cite: 14] | /BE (Fail-Safe Disc Brake)[cite: 14] |
| K77 (Foot-Mounted Solid Shaft)[cite: 14] | Size 77[cite: 14] | DRE Series (IE2 High Efficiency)[cite: 14] | /TF (PTC Thermistor Thermal Protection)[cite: 14] |
| KAF77 / KF77 (B5 Flange Mount)[cite: 14] | Size 77[cite: 14] | DRS Series (IE1 Standard Efficiency)[cite: 14] | /TH (Thermostat Switch Control)[cite: 14] |
| KAZ77 (B14 Face Flange Mount)[cite: 14] | Size 77[cite: 14] | DV / DT Series (Legacy Retrofit Motors: DT80 to DV160)[cite: 14] | /RS (Mechanical Backstop / Anti-Runback)[cite: 14] |
| KH77 / KHF77 / KHZ77 (Shrink Disc)[cite: 14] | Size 77[cite: 14] | DFV / DFT Series (ATEX Explosion-Proof Executions)[cite: 14] | /V (Forced Cooling Fan Attachment)[cite: 14] |
| KT77 / KTF77 / KTZ77 (TorqLOC® Bushing)[cite: 14] | Size 77[cite: 14] | CV / CT Series (Inverter-Duty & Servomotor Drives)[cite: 14] | /DH (Heavy-Duty Condensation Drain)[cite: 14] |
Legacy SEW Motor Replacement & IE3 DRN Upgrade Guide
Obsolete SEW motor ranges (DT, DV, DRS, DRE) installed on K77 gearboxes can be seamlessly replaced with current IE3 Premium Efficiency DRN motors[cite: 14]. 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 |
|---|---|---|---|---|
| DT80N4 / DV80N4[cite: 14] | IE1 / Standard Efficiency[cite: 14] | DRN80M4 IE3 Upgrade[cite: 14] | 0.75 kW[cite: 14] | Direct 1-to-1 flange & shaft match on K77 gearboxes. Lower energy loss.[cite: 14] |
| DT90S4 / DV90S4[cite: 14] | IE1 / Standard Efficiency[cite: 14] | DRN90S4 IE3 Upgrade[cite: 14] | 1.1 kW[cite: 14] | Identical mounting dimensions; direct drop-in replacement for KA77.[cite: 14] |
| DT90L4 / DV90L4[cite: 14] | IE1 / Standard Efficiency[cite: 14] | DRN90L4 IE3 Upgrade[cite: 14] | 1.5 kW - 2.2 kW[cite: 14] | Flange & shaft dimensions identical. Check terminal box position.[cite: 14] |
| DV100M4 / DRE100M4[cite: 14] | IE1 / IE2 Efficiency[cite: 14] | DRN100LS4 IE3 Upgrade[cite: 14] | 2.2 kW - 3.0 kW[cite: 14] | Direct replacement on K77, KAF77, and KH77 gear units.[cite: 14] |
| DV100L4 / DRE100L4[cite: 14] | IE1 / IE2 Efficiency[cite: 14] | DRN100L4 IE3 Upgrade[cite: 14] | 3.0 kW - 4.0 kW[cite: 14] | B5/B14 adapter compatibility preserved. Standard KA77 pairing.[cite: 14] |
| DV112M4 / DRE112M4[cite: 14] | IE1 / IE2 Efficiency[cite: 14] | DRN112M4 IE3 Upgrade[cite: 14] | 5.5 kW[cite: 14] | Identical shaft centerline height & mounting pattern. Brake options BE2/BE5.[cite: 14] |
| DV132S4 / DRE132S4[cite: 14] | IE1 / IE2 Efficiency[cite: 14] | DRN132S4 IE3 Upgrade[cite: 14] | 7.5 kW[cite: 14] | Heavy industrial drive drop-in unit. Full compatibility with SEW VFD systems.[cite: 14] |
| DV160M4 / DRE160M4[cite: 14] | IE1 / IE2 Efficiency[cite: 14] | DRN160M4 IE3 Upgrade[cite: 14] | 11.0 kW[cite: 14] | Maximum power capacity pairing for K77 series. Replaces legacy DV160M4.[cite: 14] |
Expert Selection & Retrofit Engineering Notes
We specialize in providing complete drive packages and technical replacement solutions for the entire SEW-Eurodrive K77 series[cite: 14]. Whether you require a foot-mounted solid shaft unit (K77), hollow shaft with keyway (KA77), B5 output flange (KAF77 / KF77), shrink disc connection (KH77), or keyless TorqLOC® clamping system (KT77), all mechanical designs can be supplied pre-assembled with state-of-the-art IE3 DRN series motors (DRN80M4 to DRN160M4)[cite: 14].
When retrofitting an existing application featuring an obsolete DT80, DT90, DV100, DV112, DV132, or DV160 motor, upgrading to an IE3 DRN motor ensures complete dimensional interchangeability while substantially reducing operating temperatures and energy costs[cite: 14]. 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[cite: 14].
When retrofitting an existing application featuring an obsolete DT80, DT90, DV100, DV112, DV132, or DV160 motor, upgrading to an IE3 DRN motor ensures complete dimensional interchangeability while substantially reducing operating temperatures and energy costs[cite: 14]. 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[cite: 14].
Core Benchmark Model Standard Configurations
- KA77 DRN80M4 (0.75 kW)[cite: 14]
- KA77 DRN90S4 (1.1 kW)[cite: 14]
- KA77 DRN90L4 (1.5 kW)[cite: 14]
- KA77 DRN100LS4 (2.2 kW)[cite: 14]
- KA77 DRN100L4 (3.0 kW)[cite: 14]
- KA77 DRN112M4 (5.5 kW)[cite: 14]
- KA77 DRN132S4 (7.5 kW)[cite: 14]
- KA77 DRN160M4 (11 kW)[cite: 14]
- K77 DRN100L4 (3.0 kW)[cite: 14]
- K77 DRN132S4 (7.5 kW)[cite: 14]
- KAF77 DRN100L4 (3.0 kW)[cite: 14]
- KAF77 DRN112M4 (5.5 kW)[cite: 14]
- KH77 DRN100L4 (3.0 kW)[cite: 14]
- KH77 DRN132S4 (7.5 kW)[cite: 14]
- KT77 DRN100L4 (3.0 kW)[cite: 14]
- KT77 DRN112M4 (5.5 kW)[cite: 14]
- KA77 DV100L4 (DV Replacement)[cite: 14]
- KA77 DV112M4 (DV Replacement)[cite: 14]
- K77 DV100L4 (DV Replacement)[cite: 14]
- KAF77 DV100L4 (DV Replacement)[cite: 14]
