Product Introduction
The SEW-EURODRIVE ML3PSF110 is a heavy-duty, triple-reduction industrial helical gearbox engineered to deliver high torque density in demanding continuous-duty applications. Utilizing a specialized rigid monobloc housing design, this 200kW-rated drive unit optimizes force distribution along the gear teeth under variable load cycles. The ML3PSF110 features optimized helical gear geometry with ground tooth flanks to minimize frictional losses, control thermal dissipation, and ensure reliable mechanical power transmission in highly restricted spatial layouts. Its foot-mounted horizontal design facilitates rigid mechanical alignment with heavy-duty electric motors and driven machinery.
Technical Specifications
| Parameter | Specification | Unit |
| Input Power Rating (PN) | 200 | kW |
| Nominal Output Torque (TN2) | 110,000 | Nm |
| Gearbox Stage Count | 3 (Triple Reduction) | Stages |
| Standard Input Speed (n1) | 1500 / 1000 | rpm |
| Thermal Rating (Pt) | Dependent on cooling options (Fan/Coil) | kW |
| Oil Capacity (Approx.) | 135 | Liters |
| Dry Weight (Standard) | 2150 | kg |
ML3PSF110 Specific Design Characteristics
Optimized Offset Helical Train: Unlike standard symmetrical gear configurations, the ML3PSF110 utilizes a specific triple-stage offset shaft structure that maximizes housing internal volume for enhanced oil bath lubrication on the high-speed intermediate pinion.
Flipped Parting Line Housing: The structural cast-iron housing features an asymmetric horizontal split plane designed specifically for Size 110 frames, allowing internal gear assemblies to be inspected and serviced in situ without disconnecting the lower foot-mount foundation from the baseplate.
Enhanced Radial Load Bearing Layout: The low-speed output shaft assembly integrates reinforced spherical roller bearings directly adjacent to the output plane, engineered to neutralize high overhung loads common in heavy-duty conveyor head-pulley connections.
Integrated Drive System Solutions
Factory-Configured Accessories & Coupling Options
The ML3PSF110 accommodates direct integration with specialized input and output interfaces to establish complete drive trains. It supports standard high-speed input couplings, integrated swing-base brackets, and dedicated industrial brake modules.
Integrated Auxiliary Packages
Cooling Systems: Shaft-driven mechanical fans, cooling coils embedded in the oil reservoir, or external oil-to-air circulation systems.
Condition Monitoring: Provision for PT100 temperature sensors in the bearing zones and oil sump, alongside physical mounting points for vibration analysis sensors conforming to SPM standards.
Backstop Assemblies: Mechanical lift-off backstops integrated directly onto the intermediate shaft to prevent reverse rotation in inclined material handling setups.
RELATED MODEL PARAMETER TABLE
| Model Variant | Gear Type | Input Interface | Output Shaft Type | Mounting Configuration | |
| ML3PSF110 | Helical | Solid Input Shaft | Solid Shaft with Key | Horizontal Foot Mount | |
| ML3RSH110 | Helical | Alignment Motor Scoop | Hollow Shaft with Shrink Disc | Horizontal Foot Mount | |
| ML3PVF110 | Helical | Solid Input Shaft | Solid Shaft with Key | Vertical Foot Mount | |
| ML3RSH110-E | Helical | Extended Input Shaft | Hollow Shaft with Shrink Disc | Flange / Agitator Housing | |
Industry Applications
Heavy-Duty Belt Conveyors: Main drive units for overland material transport systems requiring continuous high-torque output.
Industrial Bucket Elevators: Reliable power delivery under constant vertical load conditions utilizing integrated backstops.
Bulk Material Agitators and Mixers: High radial force handling via reinforced output shaft bearing configurations.
Scrap Metal Shredders & Crushers: High mechanical shock absorption through rigid cast housing profiles.
FAQ
Q: What is the exact mechanical oil capacity required for a standard horizontal ML3PSF110 installation?
A: The initial dry-fill oil capacity for the horizontal foot-mounted ML3PSF110 is approximately 135 liters. The exact volume varies depending on the precise nominal gear ratio (i) and the presence of external cooling loops or filtration units. Always verify fluid levels via the integrated physical dipstick or sight glass before commissioning.
Q: Can the ML3PSF110 be deployed in a vertical mounting position?
A: No. The "F" designation in the ML3PSF110 model code specifies a horizontal foot-mounted orientation with specific oil-level baselines and splash lubrication paths. For vertical installations, the model must be reconfigured to the ML3PVF variant, which incorporates drywell seals and mandatory forced lubrication pumps to protect the upper input bearings.
Q: What parameters determine whether the ML3PSF110 requires an external cooling fan?
A: The requirement for an external shaft-driven fan or an oil cooling loop depends on the calculated thermal limit (Pt) versus the actual input power (200kW). If the continuous operating ambient temperature exceeds 25°C or the unit runs at high input speeds with a low gear ratio, additional cooling accessories must be integrated to keep oil temperatures below 85°C.
Q: What input shaft diameter tolerances are standard for this specific unit?
A: The high-speed input shaft of the ML3PSF110 size unit is machined to an ISO m6 tolerance standard for solid shafts. This provides an interference fit suitable for standard flexible or fluid couplings, preventing keyway wall wear during high-torque startups.
Q: Which lubricant viscosities are approved for continuous heavy-duty operations?
A: The standard configuration accepts industrial gear oils with ISO VG220 or ISO VG320 viscosity ratings. Depending on operating conditions, CLP mineral oils or synthetic polyalphaolefin (PAO) lubricants matching SEW-EURODRIVE's guidelines for large industrial gear units are acceptable.
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