Hägglunds Radial Piston Engine 140 140 SA0NHC 02 78

Make and Model:
The Hägglunds 140 140 SA0NHC 02 78 motor is part of the AC series of radial piston motors manufactured by Hägglunds, a division of Bosch Rexroth. This motor is known for its reliability, mechanical efficiency, and ability to handle applications requiring high torque at low speeds.

General Description and Visual Appearance:
This motor is a compact cylindrical unit with a rugged steel body, designed to withstand extreme operating conditions. The exterior features a painted metal casing, often with an anti-corrosion finish. Visually, the structure includes a mounting flange, hydraulic oil inlet and outlet ports, and connectors for sensors and optional accessories.

Main Components:

• Radial Cylinder: Contains pistons arranged radially around the crankshaft.
• Pistons: Hydraulic pistons are responsible for transmitting the driving force.
• Crankshaft: Transforms the linear motion of the pistons into rotary motion.
• Mounting Flanges: Allow the motor to be installed in different configurations.
• Hydraulic Oil Ports: Allow connection to hydraulic circuits.

Measurements and Technical Specifications:

• Weight: 333 kg
• Maximum Operating Pressure: 350 bar
• Maximum Torque: Varies depending on application specifications and operating pressure.
• Maximum Speed: Depends on operating conditions and load.
• Displacement: Model-specific, important for determining the power and torque generated.

Mechanical Features:
The Hägglunds 140 SA0NHC 02 78 motor offers high torque density, excellent resistance to mechanical shock, and a simple structure for easy maintenance. The radial piston construction allows for high performance even at low speeds, making it ideal for applications requiring high torque.

Operating Procedure:
The motor is powered by a hydraulic system that forces oil into the radial pistons, generating a rotary motion on the crankshaft. This design allows for precise control of speed and torque, making it particularly suitable for heavy-duty industrial applications.

Matching Accessories:

• Control Valves: For regulating flow and pressure.
• Temperature and Pressure Sensors: To monitor operating conditions.
• Cooling Unit: To keep the oil at the optimum temperature during heavy use.

Mathematical Formulas for Optimal Use:

1. Torque Calculation: T=P×VT = P \times V $T$ $=$ $P$ $\times$ $V$ where TT $T$ is the torque, PP $P$ is the pressure and VV $V$ is the displacement.
2. Power Calculation: Pout=T×N/9550P_{out} = T \times N / 9550 $P$ o u t ​= $T$ $\times$ $N$ $/9550$ where NN $N$ is the speed in revolutions per minute (RPM).
3. System Efficiency: Consider pressure losses and friction to achieve true performance.

Machinable Materials:
These motors are typically used for power transmission in industrial and mining applications, not directly affecting the type of material being machined, but are suited to systems that operate with metals, minerals, plastics and other raw materials.

Maintenance and Checks:

• Regular Checks: Check for oil leaks, seal condition, and sensor functionality.
• Cleaning: Keep the exterior clean and check for debris that could damage the components.
• Hydraulic Oil Replacement: Essential to ensure engine life and efficiency.

Used Appraisal:
To determine whether your used Hägglunds 140 SA0NHC 02 78 engine is in good condition, it is important:

• Check for maintenance documentation.
• Check for any signs of excessive wear or external damage.
• Test the engine to ensure there are no abnormal vibrations or noises during operation.

Applications and Benefits of Buying Used:
This motor is used in industries such as mining, metalworking, and heavy materials handling. Buying a used Hägglunds 140 SA0NHC 02 78 motor offers significant cost savings without compromising reliability, given the long life and robustness of these motors, even when purchased secondhand.