WOODWARD 9907-1235

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The WOODWARD 9907-1235 is a specific configuration of a TM-200LP Linear Actuator.

WOODWARD 9907-1235: TM-200LP Linear Actuator

The WOODWARD 9907-1235 is a robust and precise actuator designed for industrial applications. It serves to convert a control signal into mechanical motion, primarily for regulating the speed, power output, or other critical parameters of engines and turbines.

Product Overview

This part number falls within Woodward’s highly capable TM (Turbine/Engine Master) series of actuators, specifically the TM-200LP variant. The TM-200LP is a larger, more powerful version within this family compared to the TM-25LP.

• Product Type: Linear Actuator
• Manufacturer: Woodward
• Part Number: 9907-1235
• Model Designation: TM-200LP
• Key Features:
  • LP (Low Pressure): This indicates that the actuator is designed to operate with a lower hydraulic or pneumatic supply pressure. This is advantageous in systems where high-pressure hydraulic fluid is not readily available or where lower operating pressures are preferred.
  • Single Coil: This suggests the actuator uses a single coil for its control mechanism.
  • “Retract”: This is a crucial detail, indicating the actuator’s shaft retracts when activated or as its fail-safe/commanded direction.
• Function: It translates a control signal (typically a hydraulic or pneumatic pressure signal, or an electrical signal to its internal solenoid) into precise linear force and displacement. This mechanical output is then used to operate fuel racks, valve linkages, or other control surfaces on prime movers or industrial machinery.

Detailed Product Description

The Woodward TM-200LP Actuator is engineered for reliable and precise performance in demanding industrial environments. The TM series is well-regarded for its durability, adaptability, and high work output.

• Hydraulic or Pneumatic Operation: TM actuators can operate using either hydraulic fluid or pneumatic pressure as the working medium, depending on the specific system design. The “LP” designation highlights its suitability for lower supply pressures.
• High Work Capacity: As a TM-200LP, it offers a significantly higher work output compared to the TM-25LP, making it suitable for controlling larger valves or linkages that require more force. The “200” often relates to a work capacity of 200 ft-lb.
• Precision and Repeatability: Despite its high force output, these actuators are designed to provide highly accurate and repeatable positioning, which is vital for maintaining stable speed, load, or other critical parameters for engines and turbines.
• Robust Construction: Built to withstand harsh industrial conditions, including significant vibrations, wide temperature fluctuations, and continuous duty cycles. Woodward actuators are known for their robust design and long service life.
• Linear Motion Output: The actuator provides a linear force and stroke, meaning its output shaft moves in a straight line, directly connecting to and operating control linkages.
• No Integrated Feedback (Inferred): The catalog listing only states “Retract,” without explicitly mentioning feedback. In cases where an LVDT (Linear Variable Differential Transformer) is not explicitly listed, it typically means there is no integrated position feedback mechanism. If closed-loop position control is required by the control system, an external position sensor would be necessary.

Technical Specifications (General for TM-200LP Actuators, specific details for 9907-1235)

Typical Applications

The WOODWARD 9907-1235 TM-200LP Linear Actuator is commonly found in a variety of heavy-duty industrial applications that require reliable and powerful mechanical control:

• Large Diesel and Gas Engines: For accurate and powerful control of fuel injection systems or throttle bodies, maintaining desired engine speed and load. The “LP” feature is useful where lower pressure hydraulic systems are available.
• Medium to Large Steam Turbines: For actuating significant steam admission valves, regulating steam flow to control turbine speed and power output.
• Industrial Compressors and Pumps: Used in systems where substantial flow or pressure regulation is achieved by adjusting large, heavy-duty valves or dampers.
• General Industrial Machinery: In processes where direct mechanical control from a governor or control system is needed, and where substantial force and precise linear motion are required.