SEW KA157DRN280M4 Helical-Bevel Gearmotor
Brand: SEW-Eurodrive | Series: KA-Series (Hollow Shaft)
The SEW KA157DRN280M4 is a maximum capacity industrial helical-bevel gearmotor featuring a hollow shaft design[cite: 11]. Engineered for extreme torque demands, massive radial and axial load capacity, and heavy-duty thermal endurance, it is extensively deployed in large mining conveyors, cement kiln drives, steel mill equipment, power plant material handling, and heavy agitator systems[cite: 11].
Technical Specifications
| Model / Part Number | KA157DRN280M4[cite: 11] |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive[cite: 11] |
| Gear Unit Type | KA Series (Helical-Bevel, Hollow Shaft)[cite: 11] |
| Motor Type | DRN280M4 (AC Squirrel-Cage Motor, IE3 Premium)[cite: 11] |
| Rated Motor Power (kW) | 90.0 kW (Standard)[cite: 11] |
| Output Speed / Ratio | Customizable via gearbox options (Contact for ratio details)[cite: 11] |
| Mounting Position | Universal / Hollow Shaft with Keyway[cite: 11] |
Documentation & Resources
SEW K157 Series Modular Configuration Matrix
Full-range modular assembly guide for SEW-Eurodrive Size 157 helical-bevel gearboxes[cite: 11]. 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 |
|---|---|---|---|
| KA157 (Hollow Shaft with Keyway)[cite: 11] | Size 157[cite: 11] | DRN Series (IE3 Premium: 180M4 to 315M4 / 18.5 kW - 200 kW)[cite: 11] | /BE (Fail-Safe Disc Brake)[cite: 11] |
| K157 (Foot-Mounted Solid Shaft)[cite: 11] | Size 157[cite: 11] | DRE Series (IE2 High Efficiency)[cite: 11] | /TF (PTC Thermistor Thermal Protection)[cite: 11] |
| KAF157 / KF157 (B5 Flange Mount)[cite: 11] | Size 157[cite: 11] | DRS Series (IE1 Standard Efficiency)[cite: 11] | /TH (Thermostat Switch Control)[cite: 11] |
| KAZ157 (B14 Face Flange Mount)[cite: 11] | Size 157[cite: 11] | DV / DT Series (Legacy Retrofit Motors: DV180 to DV280)[cite: 11] | /RS (Mechanical Backstop / Anti-Runback)[cite: 11] |
| KH157 / KHF157 / KHZ157 (Shrink Disc)[cite: 11] | Size 157[cite: 11] | DFV / DFT Series (ATEX Explosion-Proof Executions)[cite: 11] | /V (Forced Cooling Fan Attachment)[cite: 11] |
| KT157 / KTF157 / KTZ157 (TorqLOC® Bushing)[cite: 11] | Size 157[cite: 11] | CV / CT Series (Inverter-Duty & Servomotor Drives)[cite: 11] | /DH (Heavy-Duty Condensation Drain)[cite: 11] |
Legacy SEW Motor Replacement & IE3 DRN Upgrade Guide
Obsolete SEW motor ranges (DT, DV, DRS, DRE) installed on K157 gearboxes can be seamlessly replaced with current IE3 Premium Efficiency DRN motors[cite: 11]. 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 |
|---|---|---|---|---|
| DV180M4 / DT180L4[cite: 11] | IE1 / Standard Efficiency[cite: 11] | DRN180M4 IE3 Upgrade[cite: 11] | 18.5 kW[cite: 11] | Direct 1-to-1 flange & shaft match on K157 gearboxes. Lower energy loss.[cite: 11] |
| DV180L4 / DRE180L4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN180L4 IE3 Upgrade[cite: 11] | 22.0 kW[cite: 11] | Identical mounting dimensions; direct drop-in replacement.[cite: 11] |
| DV200L4 / DRE200L4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN200L4 IE3 Upgrade[cite: 11] | 30.0 kW[cite: 11] | Flange & shaft dimensions identical. Check terminal box position.[cite: 11] |
| DV225S4 / DRE225S4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN225S4 IE3 Upgrade[cite: 11] | 37.0 kW[cite: 11] | B5/B14 adapter compatibility preserved. Fully compliant with modern IE3 standards.[cite: 11] |
| DV225M4 / DRE225M4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN225M4 IE3 Upgrade[cite: 11] | 45.0 kW[cite: 11] | Direct replacement on KA157, KAF157, and KH157 gear units.[cite: 11] |
| DV250M4 / DRE250M4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN250M4 IE3 Upgrade[cite: 11] | 55.0 kW[cite: 11] | Identical shaft centerline height & mounting pattern. Brake options updated to BE30/BE60.[cite: 11] |
| DV280S4 / DRE280S4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN280S4 IE3 Upgrade[cite: 11] | 75.0 kW[cite: 11] | Heavy industrial drive drop-in unit. Full compatibility with SEW VFD systems.[cite: 11] |
| DV280M4 / DRE280M4[cite: 11] | IE1 / IE2 Efficiency[cite: 11] | DRN280M4 IE3 Upgrade[cite: 11] | 90.0 kW[cite: 11] | Standard K157 motor pairing. Replaces legacy DV280M4 seamlessly.[cite: 11] |
Expert Selection & Retrofit Engineering Notes
We specialize in providing complete drive packages and technical replacement solutions for the entire SEW-Eurodrive K157 series[cite: 11]. Whether you require a foot-mounted solid shaft unit (K157), hollow shaft with keyway (KA157), B5 output flange (KAF157 / KF157), shrink disc connection (KH157), or keyless TorqLOC® clamping system (KT157), all mechanical designs can be supplied pre-assembled with state-of-the-art IE3 DRN series motors (DRN180M4 to DRN315M4)[cite: 11].
When retrofitting an existing application featuring an obsolete DV180, DV200, DV225, DV250, or DV280 motor, upgrading to an IE3 DRN motor ensures complete dimensional interchangeability while substantially reducing operating temperatures and energy costs[cite: 11]. 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: 11].
When retrofitting an existing application featuring an obsolete DV180, DV200, DV225, DV250, or DV280 motor, upgrading to an IE3 DRN motor ensures complete dimensional interchangeability while substantially reducing operating temperatures and energy costs[cite: 11]. 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: 11].
Core Benchmark Model Standard Configurations
- KA157 DRN180M4 (18.5 kW)[cite: 11]
- KA157 DRN180L4 (22 kW)[cite: 11]
- KA157 DRN200L4 (30 kW)[cite: 11]
- KA157 DRN225S4 (37 kW)[cite: 11]
- KA157 DRN225M4 (45 kW)[cite: 11]
- KA157 DRN250M4 (55 kW)[cite: 11]
- KA157 DRN280S4 (75 kW)[cite: 11]
- KA157 DRN280M4 (90 kW)[cite: 11]
- K157 DRN200L4 (30 kW)[cite: 11]
- K157 DRN280M4 (90 kW)[cite: 11]
- KAF157 DRN225M4 (45 kW)[cite: 11]
- KAF157 DRN280M4 (90 kW)[cite: 11]
- KH157 DRN250M4 (55 kW)[cite: 11]
- KH157 DRN280M4 (90 kW)[cite: 11]
- KT157 DRN225M4 (45 kW)[cite: 11]
- KT157 DRN280M4 (90 kW)[cite: 11]
- KA157 DV200L4 (DV Replacement)[cite: 11]
- KA157 DV250M4 (DV Replacement)[cite: 11]
- KA157 DV280M4 (DV Replacement)[cite: 11]
- K157 DV280M4 (DV Replacement)[cite: 11]
