ZX120-3 ZX135US ZX135US-3 Swing Motor 9177550 9196961

ZX120-3 ZX135US ZX135US-3 Swing Motor For Hitachi Excavator Slewing Motor 9177550 9196961

The ZX135US-3 is a model of an excavator produced by Hitachi Construction Machinery. The swing motor in an excavator like the ZX135US-3 is a crucial component that drives the swing or rotation of the upper structure of the excavator.

Key Features of a Swing Motor:

1. Type: Typically, a Hydraulic Swing Motor.
2. Displacement: Usually measured in cubic centimeters per revolution (cc/rev).
3. Maximum Pressure: The highest pressure the motor can handle, typically measured in bars or PSI.
4. Speed: Measured in revolutions per minute (RPM).
5. Torque Output: The rotational force provided by the motor, measured in Newton-meters (Nm) or foot-pounds (ft-lb).

Specifications for ZX135US-3 Swing Motor (Generalized):

• Type: Axial piston or radial piston hydraulic motor.
• Operating Pressure: Usually around 3000-5000 PSI.
• Maximum Torque: Varies based on design but generally in the range of 1000-2000 Nm.
• Speed: Typically adjusted to match the swing speed of the excavator.
• Mounting: Designed to fit the specific swing drive system of the ZX135US-3.
• Ports: Inlet and outlet hydraulic ports.
• Seal Type: High-pressure seals to prevent fluid leakage.

Function and Role:

The swing motor in the ZX135US-3 drives the rotation of the upper part of the excavator, including the cab and the arm. This allows the operator to swing the boom, arm, and bucket around a 360-degree range, facilitating digging and loading operations.

Maintenance Tips:

1. Regular Inspection: Check for hydraulic fluid leaks and wear in the motor and associated components.
2. Hydraulic Fluid: Ensure the hydraulic fluid is clean and at the correct level. Contaminated fluid can lead to wear and damage.
3. Seal Checks: Inspect seals regularly to prevent leaks.
4. Performance Monitoring: Watch for any changes in the swing speed or unusual noises, which could indicate issues with the motor.
5. Filter Replacement: Regularly replace hydraulic filters to ensure clean fluid is circulating through the system.

Troubleshooting Common Issues:

• Leaks: Check seals and connections.
• Reduced Performance: Inspect for worn components or contamination in the hydraulic fluid.
• Noisy Operation: Could indicate air in the hydraulic system or worn bearings.

Obtaining Parts and Service:

For specific parts, maintenance procedures, or troubleshooting, refer to the ZX135US-3 service manual or contact Hitachi's customer support. Authorized dealers and service centers can provide OEM parts and professional maintenance services to ensure your swing motor and overall excavator function efficiently.

Conclusion:

The swing motor is an essential component for the operational effectiveness of the Hitachi ZX135US-3 excavator. Regular maintenance and timely replacement of worn parts will help in keeping the excavator in optimal working condition. For precise specifications, parts, or service instructions, consulting the excavator's service manual or contacting the manufacturer is recommended.