SEW FA157 DRN225S4 Heavy Duty Parallel Reducer

SEW FA157-DRN225S4: High-Torque Parallel Shaft Reducer for 37kW Heavy-Duty Drives

The SEW FA157 DRN225S4 is a high-capacity industrial drive designed for heavy-load applications where installation depth is limited but torque requirements are extreme. Delivering a rated output torque of up to 25000 Nm, this 37kW unit is the core component for large-scale industrial machinery.

The FA157 features a triple-stage helical gear arrangement, which ensures high transmission efficiency (≥ 94%) even under full load. Its parallel shaft offset design allows for a slimmer profile compared to coaxial gearboxes, making it a "drop-in" solution for heavy conveyors and mixers where the motor must be mounted alongside the machine frame. By pairing the FA157 gearbox with the DRN225S4 IE3 motor, operators benefit from reduced thermal losses and lower power consumption in continuous-duty (S1) cycles.

• Extreme Load Capacity: Engineered to handle high overhung loads and shock loads common in primary material processing.
• IE3 Premium Efficiency: The DRN225S4 motor meets global energy mandates, significantly reducing the Total Cost of Ownership (TCO) for high-power (37kW+) installations.
• Modular Mounting Options: Supports Foot-mounted (F157) for rigid ground installations or Hollow Shaft (FA157) for direct shaft mounting with a torque arm.
• Precision Gearing: Case-hardened and ground helical gears provide silent operation and a long service life for the gear teeth.
• Environmental Protection: Standard IP55 protection with reinforced oil seals (FKM available) to prevent lubricant contamination in dusty mining or cement plant environments.

The SEW FA157 DRN225S4 is specifically deployed in "high-inertia" industrial scenarios:

• Heavy-Duty Belt Feeders: The 37kW power and massive torque of the FA157 are essential for starting fully loaded conveyor belts in mining and coal handling.
• Industrial Agitators: Its high structural rigidity allows it to sustain the intense axial thrust and radial forces generated by large-scale mixing impellers in chemical tanks.
• Bucket Elevators: Provides the reliable lifting force required for transporting bulk solids vertically in cement and grain processing facilities.
• Primary Shredders: Designed to absorb the sudden torque spikes encountered during material reduction and recycling processes.

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