Product Name: Electric Motor, 50HP (Part No. 20498147)

Description:
The Electric Motor 20498147 is a 50 horsepower (37 kW), three-phase induction motor used as the prime mover in the hydraulic power package of a waterjet cutting system. It is responsible for converting electrical energy into mechanical energy to drive the hydraulic pump, which supplies pressurized hydraulic fluid to the intensifier.

This motor is a key component of the hydraulic power package (assembly 20497413), where it is coupled to the hydraulic pump via a flexible drive coupling (20498155) . As the main drive for the hydraulic system, the motor's operation directly influences the intensifier's stroke rate and, consequently, the volume of high-pressure water delivered to the cutting head . It is engineered for continuous, heavy-duty operation in industrial cutting environments.

Applications:

• Serves as the primary prime mover in 50HP waterjet intensifier pump hydraulic power units .

• Provides the rotational mechanical force to drive the axial piston hydraulic pump at approximately 1500-1800 rpm .

• Used in standard 60,000 psi waterjet systems requiring a 50HP power source .

• Compatible with Hydraulic Power Package 20497413 .

Features:

• Power Rating: 50 HP (37 kW), suitable for demanding continuous cutting operations .

• Motor Type: Totally Enclosed Fan-Cooled (TEFC) industrial induction motor.

• Voltage Compatibility: Available in various voltage configurations to match industrial power supplies (e.g., 208-230/460 VAC, 60 Hz / 190-380 VAC, 50 Hz) .

• Speed: Rated for 1800 RPM (60 Hz) or 1500 RPM (50 Hz) .

• Duty Cycle: Designed for continuous (24/7) operation in harsh manufacturing environments .

Maintenance:

Motor Check & Cleaning:

• Visual Inspection: Before each shift, check the motor for any signs of oil or water contamination on the housing. Keep the motor exterior clean to prevent overheating.

• Cooling Fins: Ensure the cooling fan (if exposed) is free of debris and that the TEFC cover is clear to allow proper airflow.

• Electrical Connections: Periodically inspect the power leads and terminal box for signs of chafing, corrosion, or loose connections. Turn off and lockout power before inspecting .

Drive System Integration (Coupling):

• Flexible Coupling: The motor torque is transmitted to the hydraulic pump through a flexible drive coupling (20498155) .

• Symptom of Failure: If the coupling fails, the motor will run but the pump shaft will not turn, resulting in a sudden loss of hydraulic pressure and cutting ability .

• Maintenance Access: Servicing the coupling requires sliding the motor back on its mount. This procedure must only be done after the system is fully depressurized and locked out .

Troubleshooting Common Issues:

• Motor runs, but pump does not build pressure: If the motor sounds normal but there is zero hydraulic pressure, the flexible coupling is likely stripped or broken . Check the shaft coupling before assuming the pump is failed.

• Motor overload / tripping: Can be caused by contaminated hydraulic oil, a failing pump, or electrical supply issues. Check the pump and fluid cleanliness .

• Excessive motor noise / vibration: Indicates potential bearing failure or misalignment between the motor and pump shafts.

Safety & Lockout/Tagout (Critical):

• Lockout/Tagout: Before performing any maintenance on the motor, coupling, or pump, you must turn OFF the electrical power and lockout the disconnect .

• Pressure Release: Ensure the hydraulic system and high-pressure water system are fully depressurized before disconnecting the motor from the pump .

• Electrical Safety: Permits only approved technicians to open the electrical enclosure or work on the motor terminals .