Description
Product Overview
The cam-driven disc is assembled at the driving end of the high-pressure oil pump and rotates synchronously with the main shaft through the internal spline in the center. It guides the fuel into the rotor suction chamber through the arc-shaped cavities on the disc surface, and simultaneously drives the rotor to complete the pre-boosted low-pressure fuel delivery. Under long-term high-speed operation, impurities in diesel washing the machine, and the high-temperature and low-temperature vibration conditions of the engine compartment, the spline surface will wear, the inner wall of the arc-shaped guide groove will develop scratches, and the flatness will deviate. This may cause transmission slippage, reduction in fuel supply flow, and pressure loss in the low-pressure oil circuit. The equipment may experience idle vibration, weak climbing power after stalling, and rapid pressure loss in the oil circuit after shutdown. This product has standardized specifications for the spline, the outer diameter of the disc, the size of the guide cavity, and the distance between the flange holes. After disassembling the oil pump oil delivery cavity, the cam disc can be replaced alone to repair the failure of fuel supply. It is suitable for the maintenance of large mining excavators, heavy loaders, and long-distance heavy-duty freight trucks equipped with electronic control common rail diesel engines.
Core advantages of the product
The tempered and hardened alloy steel is formed as a whole, and it is highly wear-resistant and not prone to deformation and wear.
The overall steel is treated with high-temperature quenching and hardening, and the surface and internal spline teeth of the disc are strengthened with a wear-resistant layer. Under long-term high-speed rotation friction and high-pressure fuel washing, scratches and tooth breakage are not likely to occur, maintaining the accuracy of transmission and flow guidance for a long time.
The central standard multi-spline internal spline has synchronous transmission without slipping or idling.
The central integrated multi-spline internal spline hole is fully engaged with the oil pump driving shaft, ensuring synchronous rotation without gap slipping, maintaining a constant rotor speed, stabilizing the fuel suction flow, and eliminating the problem of inconsistent fuel supply.
The double symmetrical arc-shaped guide flow cavities allow smooth fuel circulation without suction loss.
The two symmetrical arc-shaped fluid oil channels on the disc surface have a streamlined structure, reducing the resistance of fuel circulation, and preventing fuel suction loss under heavy-load climbing conditions of the vehicle, ensuring the continuous and stable supply of low-pressure fuel to the high-pressure plunger cavity.
The four groups of flange fixing holes on the outer ring are evenly distributed and provide a standard installation hole for fast and accurate assembly. During operation, there is no radial shaking or offset, avoiding eccentric wear on one side of the rotor, and prolonging the service life of the oil pump assembly components.
Double high-precision flat surface grinding ensures a tight fit with the cavity and prevents fuel backflow and pressure loss.
The two sides of the disc are precisely polished to a high degree of flatness, with strict control over the flatness, and are fully sealed with the oil pump cavity and rotor, blocking the backflow of low-pressure fuel and stabilizing the base oil pressure of the oil circuit, accelerating the pressure building speed of the oil pump.
Each cam disc is independently tested for flow transmission, and no secondary grinding is required during assembly.
Each disc is individually tested for the gap of the spline fit, the flow of the guide, and the sealing performance of the plane. The factory parameters are unified, and it can be directly matched with the corresponding oil pump oil delivery cavity, shortening the time for disassembling and debugging the oil pump.
Product list
28303795 Oil pump cam-driven disc 1 piece Applicable scenarios
It is suitable for large mining excavators, heavy-duty wheeled loaders, long-distance heavy-duty freight trucks, and high-power fixed diesel generators equipped with the CP series electronic common rail fuel supply system. It is applicable for 24-hour continuous heavy-duty operations in mines, long-distance trunk transportation, hot and dusty environments at construction sites, and heavy-duty electric common rail diesel high-pressure oil pumps with CP series fuel supply systems that are corroded by impure diesel. It is used for replacing the internal transmission and diversion components of the oil pump and oil supply pump inside the heavy-duty electric common rail diesel engine.
Product basic parameters
Product name: 28303795 High-pressure oil pump and oil supply pump cam-driven disc
Part number: 28303795
Main material: Tempered hardened alloy steel
Structural features: Disc-shaped cam base, central multi-tooth internal spline transmission hole, double symmetrical arc-shaped diversion oil grooves, four groups of flange installation holes on the outer ring, two positioning process small holes, double-sided precision grinding sealing plane
Application conditions: Low-pressure fuel diversion and synchronous transmission, high-temperature continuous vibration in the engine compartment, corrosion of impure diesel in heavy-duty electric common rail diesel engines with CP series high-pressure oil pumps and oil supply pumps
Product status: New and complete cam-driven disc components, factory completed with all sets of calibration and detection for spline transmission accuracy, diversion flow, and plane sealing degree
Packaging: Independent sealed plastic bags for separate packaging, isolated from dust and impurities, with hard protective tubes for buffering and protection to avoid磕碰划伤 the precise planes and spline tooth surfaces during transportation， supporting small-scale retail and bulk purchase in bags， and compatible with cross-border small package logistics.
