Bellhousing and coupling for Hydraulic Power Unit

• Bell Housing Functions:
  • Provides rigid alignment and mechanical connection between motor and pump.
  • Encloses and protects the coupling and shaft ends from contaminants and accidental contact.
  • Maintains concentricity to reduce alignment errors.
  • Offers standardized IEC flanges for universal motor-pump integration.
   
• Coupling Functions:
  • Transmits torque and rotational motion between shafts.
  • Compensates for radial, angular, and axial misalignment.
  • Dampens vibration and shock loads to protect bearings and seals.
  • Acts as a sacrificial component to prevent catastrophic equipment failure under overload.

The collaborative relationship between bellhousings and couplings: the bellhousing provides external rigid support and protection, while the coupling offers internal flexible power transmission and error compensation. The combination of the two achieves a “combination of rigidity and flexibility” : it not only ensures the structural stability of the system but also avoids stress concentration caused by rigid connections through flexible buffering. It is a key combination for the stable operation of the hydraulic power unit.