Unmatched Inventory of Throttle Motors and Actuators

Our comprehensive selection includes the critical PC200-7 Throttle Motor 7834-41-2002 , the Caterpillar E320C Throttle Motor 247-5212 , and the Hyundai R225-7 Throttle Motor 21EN-32200 . We understand the complexity of part numbers and ensure cross-compatibility. Whether you need a simple 12V or 24V Accelerator Motor or a sophisticated E320D2 Stepper Motor 386-3439 , we have the solution. Our parts are proven in the field, offering the reliability your business depends on.

In addition to electrical parts, Growshine International is a trusted source for essential engine components like Engine Liner Kits (e.g., K25 Engine Overhaul Liner Kit) and various Excavator Engine Crankshafts for engines such as Kubota D902 , V2203 , and Cat C4.4 . We are a one-stop shop for all your engine overhaul needs.

Key Component Spotlight: Throttle Motor Function

Throttle Motor (节气门电机): A precision electric motor (often a stepper motor ) that is part of the Governor assembly. It controls the position of the fuel pump rack or the throttle plate in response to the operator's input (accelerator pedal/lever) and the machine's ECU. It is installed on the engine and is crucial for maintaining the desired engine RPM. Example: Caterpillar E320C Throttle Motor . (Русский: Мотор дроссельной заслонки гусеничного экскаватора Caterpillar E320C.)

Governor (调速器): The mechanical or electronic system that regulates the engine's speed. The throttle motor is the actuator for the electronic governor. Installed on the engine . Example: Komatsu PC200-7 Governor Motor .

Crankshaft (曲轴): The primary rotating component in the engine, which converts the reciprocating motion of the pistons into rotational motion. Located within the engine block . Example: Kubota D1105 Engine Crankshaft . (Русский: Коленчатый вал двигателя Kubota D1105.)

Engine Liner Kit (发动机缸套组件): A set including the cylinder liner, piston, piston rings, and sometimes gaskets, used during a major engine overhaul. Installed within the engine cylinder . Example: K25 Engine Overhaul Liner Kit .

Solenoid Motor (电磁阀电机): A type of electrical actuator, often used for functions like fuel cut-off or flameout control. Installed near the fuel pump or injection system . Example: Doosan DH220-5 Flameout Throttle Motor .

Positioning Sensor (定位传感器): A sensor that provides feedback on the exact position of the throttle motor's arm to the ECU, ensuring accurate speed control. Attached to the throttle motor assembly . Example: Caterpillar E320C Throttle Motor Positioning Sensor 247-5230 .

ECU (Engine Control Unit/电子控制单元): The 'brain' of the engine, which processes sensor data and sends commands to actuators like the throttle motor. Installed in a protected box, often in the cabin or near the engine . Example: Komatsu PC78 ECU with Software .

Engine Control Motor (发动机控制电机): A general term for any motor that regulates engine function, often interchangeable with Throttle Motor. Installed on the engine . Example: Mini Excavator Engine Control Motor 299-7824 .

Stepper Motor (步进电机): A type of DC electric motor that divides a full rotation into a number of equal steps, allowing for precise control—ideal for throttle regulation. Integrated into the throttle motor assembly . Example: Caterpillar E320D2 Stepper Motor 3863439 .

Accelerator Motor (加速器电机): Another interchangeable term for the Throttle Motor. Installed on the engine . Example: Hyundai R110-7 Accelerator Motor 21EN-32280 . (Русский: Мотор ускорителя экскаватора Hyundai R110-7.)

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