SEW X3F300e Industrial Gearbox (Xe Generation Size 300)
The SEW X3F300e is a 3-stage parallel helical ultra-heavy-duty industrial gearbox engineered within SEW-Eurodrive's flagship Xe Generation (Generation e) platform. Delivering a massive nominal output torque capacity of 350.0 kNm, the Size 290 to 320 Xe Series incorporates optimized gear tooth contact geometry, expanded housing surface thermal dissipation, low-friction seal assemblies, and extended bearing operational life. Designed to cover nominal torques up to 475 kNm at the peak of the X platform, the X290e, X300e, X310e, and X320e sizes provide complete 1-to-1 dimensional compatibility to directly replace legacy M Series (M2PSF90 / M3RSF90 / M3PSF100), MC Series (MC09), and ML Series flagship industrial speed reducers in primary mining conveyors, cement kilns, port container cranes, ball mills, and heavy industrial agitators.
Technical Specifications
| Model / Part Number | X3F300e (3-Stage Helical, Size 300 Xe Generation) |
|---|---|
| Brand / Manufacturer | SEW-Eurodrive |
| Gear Unit Layout | Parallel Helical (X.F / X.Fe) & Right-Angle Bevel-Helical (X.K / X.Ke) |
| Frame Size Focus | Flagship Sizes X290e (300 kNm), X300e (350 kNm), X310e (410 kNm), X320e (475 kNm) |
| Nominal Torque Output | 350.0 kNm (X300e) / Up to 475.0 kNm (X320e) / 6.8 to 475 kNm (Full Series Range) |
| Gear Ratio Range | i = 6.3 to 450 (2-stage, 3-stage, and 4-stage executions) |
| Legacy Compatibility | Direct drop-in replacement for SEW M Series (M100 / M120), MC09, M3, and ML Series |
| Shaft & Mounting Design | Solid Shaft, Hollow Shaft with Keyway/Shrink Disc, Flange, Torque Arm |
Documentation & Resources
SEW X & Xe Series Modular Architecture Matrix
Structural layout guide for SEW-Eurodrive X and Xe series industrial gearboxes across parallel helical and right-angle bevel-helical configurations. Review supported mounting orientations, shaft executions, and auxiliary thermal options:
| Gear Unit Layout & Series Design | Frame Size Range | Nominal Torque Capacity (kNm) | Standard Factory Accessories |
|---|---|---|---|
| X.F / X.Fe (2, 3, 4-Stage Parallel Helical) | X100e to X320e (23 Sizes) | 6.8 kNm - 475 kNm | /CC (Fan Cooling Cover) |
| X.K / X.Ke (2, 3, 4-Stage Right-Angle Bevel-Helical) | X100e to X320e (23 Sizes) | 6.8 kNm - 475 kNm | /OW (Water/Oil Heat Exchanger) |
| X.T (3-Stage Bucket Elevator Drives) | X100e to X300e (10 Sizes) | 6.8 kNm - 350 kNm | /OA (Air/Oil Heat Exchanger) |
| X.P (Planetary Helical Combination Drives) | X100e to X300e (10 Sizes) | 22.0 kNm - 350 kNm | /BS (Backstop / Anti-Runback Device) |
| MC / M / ML Series (Legacy Flagship Retrofits) | MC02 to MC09 / M50 to M120 / ML | 6.0 kNm - 450 kNm | /MH (Engineered Adapter Flange) |
Legacy SEW MC / M / ML Gearbox Replacement & Xe Upgrade Guide
Obsolete SEW flagship industrial gearboxes (M2PSF90, M3RSF100, M3PSF120, MC3RL09, ML Series) can be directly upgraded to current high-efficiency Xe generation flagship gear units. Refer to the dimensional and torque replacement mapping below:
| Legacy Gearbox Model (Obsolete) | Original Torque Rating | Current Xe Series Replacement | Xe Nominal Torque | Mechanical Retrofit & Mounting Compatibility Notes |
|---|---|---|---|---|
| M2PSF70 / M3RSF70 / M3PSF70 | 120.0 kNm - 140.0 kNm | X2F250e / X3F250e / X3K250e Xe Upgrade | 175.0 kNm | Custom sub-base adapters ensure direct alignment with existing foundation bolts. |
| M2PSF80 / M3RSF80 / M3PSF80 | 150.0 kNm - 180.0 kNm | X2F260e / X3F260e / X3K260e Xe Upgrade | 205.0 kNm | Heavy mining & mill drive replacement with engineered transition sub-bases. |
| M2PSF90 / M3RSF90 / M3PSF90 | 200.0 kNm - 250.0 kNm | X2F280e / X3F280e / X3K280e Xe Upgrade | 270.0 kNm | Direct replacement for heavy M90 mill drives. Standardized adapter sub-bases. |
| M2PSF100 / M3RSF100 / MC09 Series | 280.0 kNm - 320.0 kNm | X2F300e / X3F300e / X3K300e Xe Upgrade | 350.0 kNm | Flagship 300 kNm drive. Direct replacement for obsolete MC09 and M100 units. |
| M2PSF120 / M3RSF120 / ML Series | 380.0 kNm - 450.0 kNm | X3F320e / X3K320e / X4F320e Xe Upgrade | 475.0 kNm | Maximum torque capacity for SEW X platform. Drop-in transition for ML flagship drives. |
Expert Selection & Retrofit Engineering Notes
If you are replacing an obsolete M Series (M2PSF90 to M3RSF120), MC09 Series, or ML Series flagship drive, upgrading to the new Xe Generation Size 290 to 320 ensures complete mechanical interchangeability while offering significantly higher thermal ratings and extended oil service intervals. Simply supply us with your existing SEW serial number or nameplate data, and our engineering team will provide a 100% compliant replacement specification and quote.
Core Benchmark Model Standard Configurations
- X3F300e (350.0 kNm)
- X3K300e (350.0 kNm)
- X2F300e (350.0 kNm)
- X2K300e (350.0 kNm)
- X3F290e (300.0 kNm)
- X3K290e (300.0 kNm)
- X3F310e (410.0 kNm)
- X3K310e (410.0 kNm)
- X3F320e (475.0 kNm)
- X3K320e (475.0 kNm)
- X3F280e (270.0 kNm)
- X3F260e (205.0 kNm)
- M3PSF100 (M100 Replacement)
- M3RSF100 (M100 Replacement)
- MC3RLSF09 (MC09 Replacement)
- ML3RSF120 (ML Replacement)
