Industrial helical gear motors for crushers and kilns. Compare SEW helical gear motor durability, helical bevel gear motor shock resistance, and helical gear motor cost efficiency.

Engineering for Extreme Shock Loads
Heavy-duty helical gear motors endure crushing impacts in mining and cement operations. NORD UNICASE helical gear motors withstand 500% peak shock loads, enabled by:
- Monoblock cast iron housingdelivering 300% higher torsional rigidity.
- Hardened helical gears(ISO 6336 Grade ML) resisting tooth deformation.
- Hydrodynamic bearingsmaintaining oil film thickness ≥25μm at 80°C temperatures.
Proven Results: Reduced crusher downtime by 41% at Cemex plant (NORD MAXXDRIVE case study).
SEW Extreme-Duty Helical Gear Motor Features
SEW’s mining-optimized helical bevel gear motors integrate survival-critical technologies:
- Triple-sealed shaftscombining labyrinth seals, radial lip seals, and expeller vanes against dust ingress.
- Anti-abrasion coatings(HVOF-sprayed WC-CoCr) on output shafts for wear immunity.
- Smart monitoringwith vibration sensors to pre-alert gear pitting failures.

Total Cost of Ownership Analysis
Upgrading to mining-spec helical gear motors reduces long-term expenses despite premium components:
|
Component
|
Standard Unit
|
Mining-Optimized
|
Cost Impact
|
|
Gear Material
|
16MnCr5
|
18CrNiMo7-6
|
+22%
|
|
Bearing Type
|
C3 Clearance
|
C4 Clearance
|
+18%
|
|
5-Year Maintenance
|
€5,800
|
€2,100
|
-64%
|
Strategic Advantages
- Durability:Hardened gears and monoblock housings extend service life in crusher/kiln applications.
- Downtime Reduction:Hydrodynamic bearings and shock-proof engineering minimize unplanned stops.
- ROI:64% lower maintenance costs justify material upgrades, delivering 3-year payback periods.
Select helical gear motors engineered for 26,000Nm torque to conquer cement mill overloads and mining shock loads—where component failure is not an option.
