EXR Series High Torque Bevel Planetary Gearboxes
STM Gearboxes
STM’s EXR Series is engineered for maximum torque density by combining multi-stage bevel and planetary gearing in a compact package. This high-torque platform is ideal for continuous-duty and shock-loaded applications, such as wind turbines and steel mills, where both reliability and performance are critical. The modular design allows customisation of input and output configurations to fit diverse system layouts. Precision-machined bevel gears and heavy-duty planetary carriers distribute loads evenly, minimising wear. Integrated cooling jackets and large lubrication reservoirs support high thermal loads. IEC and NEMA motor interfaces simplify integration, while optional stainless-steel housings withstand corrosive environments.
EXR Series Features
EXR gearboxes deliver torques exceeding 1,300,000 Nm in large frames, with ratios up to 10,000:1 in compound assemblies. Hardened, ground bevel and planetary gears ensure long life under extreme loads. High-capacity tapered roller and spherical bearings handle combined radial and axial forces. Sealed-for-life lubrication or forced-oil options are available for high-temperature or continuous-operation scenarios. The cast-iron or fabricated housing features integrated sensor ports for temperature and vibration monitoring. Modular input flanges allow quick motor swaps, and custom cooling jackets manage heat in the most demanding environments.
EXR Series Applications
- Wind turbine pitch, yaw, and generator drives
- Steel plant pinch roll backup systems
- Tunnel boring and shield drives
- Offshore crane and winch systems
- Heavy-duty industrial mixers
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