Model Number: 2686691 (268 - 6691)
Applicable Equipment: CAT Motor Grader 24M
Function: As a hydraulic pump, it is a vital part of the motor grader's hydraulic system. It is responsible for pressurizing and supplying hydraulic fluid to different hydraulic actuators such as the blade lift and angle cylinders, as well as the steering system. This enables precise control and movement of the grader's working components.
2. Performance Specifications
2.1 Flow Rate
Rated Flow: The rated flow rate of this hydraulic pump is a key parameter that affects the speed of hydraulic operations. It is typically [X] liters per minute (L/min). The actual value may vary depending on the rotational speed of the pump and other operating conditions. The rated flow rate directly impacts the speed at which the motor grader's hydraulic actuators can move. For example, a higher flow rate allows for faster blade adjustments.
Variable Flow Capability: The pump may have a variable flow control mechanism. The minimum flow rate might be [Y] L/min and the maximum could reach up to [Z] L/min. This variability allows the operator to adjust the speed and power of the hydraulic functions according to the work requirements. For instance, a lower flow rate can be used for precise blade leveling, while a higher flow rate is needed for more rapid blade movements during heavy - duty grading.
2.2 Pressure Ratings
Rated Pressure: The pump is designed to operate at a rated pressure of [P1] megapascals (MPa). This is the pressure at which the pump can continuously and efficiently supply hydraulic energy to the motor grader's hydraulic components such as cylinders and motors.
Peak Pressure: The pump can withstand a peak pressure of [P2] MPa for short - term, high - load situations. However, continuous operation near or above the peak pressure may lead to reduced service life and potential damage to the pump and other hydraulic system components.
3. Construction and Components
3.1 Pump Type
Piston Pump: The 2686691 pump is likely a piston - type hydraulic pump. Piston pumps are known for their high - efficiency and ability to generate high pressures. The pistons move in a reciprocating motion within the cylinders to draw in and discharge hydraulic fluid.
Cylinder Block: The cylinder block is a crucial part of the pump, usually made of high - strength, wear - resistant materials such as alloy steel. It provides a precise housing for the pistons and is machined to ensure accurate piston movement and proper sealing.
Pistons: The pistons are typically made of hardened steel, designed to fit snugly within the cylinders. Their dimensions and surface finish play a vital role in minimizing internal leakage and maximizing pumping efficiency.
Valve Plate: The valve plate contains the inlet and outlet valves that control the flow of hydraulic fluid. It is made of a durable material and is designed to ensure precise and reliable valve operation, allowing for efficient fluid transfer.
