Description
Product Overview
The limit slider is assembled between the cam of the high-pressure oil pump and the bottom of the piston. When the cam rotates, the slider transmits the thrust to drive the piston to complete the compression and fuel supply stroke, while also limiting the radial offset of the piston. Under long-term conditions of high-speed reciprocating friction of the cam, erosion by diesel impurities, and continuous vibration of the engine compartment, the arc contact surface of the slider will wear and become concave, and the limit base will deform. This may cause eccentricity and jamming of the piston, imbalance in fuel supply measurement, abnormal noise from the oil pump, and fluctuations in pump pressure, weak climbing power during cold start. This product is standardized in terms of overall length, width, thickness, arc matching curvature, and installation limit dimensions. After disassembling the high-pressure oil pump, the slider can be replaced in batches to repair the transmission wear fault. It is suitable for large mining excavators, heavy-duty loaders, and long-distance heavy-duty freight trucks with diesel engines for maintenance of high-pressure oil pumps.
Core Advantages of the Single Product
Quenched and tempered alloy steel is machined as a whole, with high hardness and wear resistance to impact wear
The entire alloy steel undergoes high-temperature quenching and hardening treatment, and the contact surface is strengthened for wear resistance. Under long-term high-frequency reciprocating friction of the cam, there is less wear and no delamination or chipping, significantly extending the service life of the oil pump transmission mechanism and reducing the frequency of disassembly and repair.
The T-shaped composite structure integrates the arc contact surface and the straight limit base for dual positioning
The arc surface on one side precisely fits the outer circle of the cam, distributing the force evenly and dispersing the impact; the flat limit base at the bottom is inserted into the piston groove, constraining the slider from lateral sliding and offset, ensuring the vertical transmission of thrust, and eliminating unilateral wear and jamming of the piston.
Precision milling without burrs processing, without metal debris contaminating the oil pump oil circuit
After overall CNC milling, the entire edge is deburred, resulting in a smooth surface without burrs. During disassembly and replacement, metal impurities will not fall into the oil pump oil circuit, avoiding oil circuit blockage and piston scratching the sealing surface.
Uniform size tolerances, no need for grinding and fitting for replacement and assembly
The length, width, and arc curvature of the slider in the same batch are strictly controlled. When inserted into the piston installation slot, it is tightly fitted without looseness. After assembly, there are no additional processing and fitting procedures, shortening the time for disassembling and repairing the oil pump.
Resistant to diesel medium and corrosion, does not rust or oxidize even after long-term immersion
The surface is treated with anti-rust passivation, and long-term immersion in diesel or engine oil media will not form a rusting and oxidizing layer, avoiding wear of the precise mating surface between the cam and the piston.
Batch testing for wear resistance and durability, consistent performance in the same batch
Samples of each batch of sliders are subjected to high-frequency reciprocating friction durability tests. The wear resistance and fitting dimensions parameters are consistent. After batch replacement, the oil pump transmission is smooth, eliminating abnormal noise and unstable fuel supply problems. List of Accessories
7135-72N Oil Pump Drive Limiting Wear-resistant Slide Block (Set of Multiple-Sealed Plastic Bags for Separate Packaging) Applicable scenarios
It is suitable for large-scale mining excavators with high-pressure common rail and mechanical direct injection fuel systems, heavy-duty wheeled loaders, long-distance heavy-duty freight trucks, high-power fixed diesel generators. 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 diesel engines exposed to diesel medium corrosion. The high-pressure oil pump cam drive mechanism of the product is suitable for the transmission of cam force, the limit of piston reciprocating motion, high-frequency reciprocating friction, and the internal transmission of heavy-duty diesel engine high-pressure oil pump with wear-resistant components.
Product basic parameters
Product name: 7135-72N High-pressure Oil Pump Cam Drive Limiting Slide
Part number: 7135-72N
Main material: Tempered and hardened alloy steel, surface treated with wear resistance and passivation
Structural features: Integrated T-shaped milling slide, arc-shaped cam contact surface, straight-limiting installation base, smooth and precise processing shape
Application conditions: Cam force transmission, piston reciprocating motion limit, high-frequency reciprocating friction, heavy-duty diesel engine high-pressure oil pump internal transmission wear-resistant components
Product status: New and complete limiting slide, factory completed with full calibration and detection of wear resistance, matching dimensions and tolerance
Packaging: Transparent sealed plastic bags for batch packaging, isolated from oil and dust, hard tube protection for separate storage to avoid squeezing, bumping, scratching of the arc-shaped contact surface, supports single-piece retail, batch purchase of the entire bag, and is compatible with cross-border small package logistics.
