Danfoss D1P145/193/260 spare parts
3 week ago
Product details
Danfoss D1P145/193/260 Spare Parts Detailed Introduction
(Embedded keywords: Hydraulic valve, hydraulic system)
These components are core overhaul consumables for Danfoss D1P series heavy-duty axial piston pumps with displacements of 145cc, 193cc and 260cc. Widely used in large loaders, pavers, drilling rigs and industrial hydraulic stations, they cooperate with the main Hydraulic valve group to form a complete power loop of the hydraulic system, realizing stepless flow adjustment and high-pressure oil supply for heavy-load actuators.
Individual Component Breakdown
1. Swashplate
Also referred to as wobbler plate, it is the core stroke adjustment component of the piston pump. The inclined working surface fits closely with piston shoes; changing its tilt angle alters the reciprocating travel of pistons inside the cylinder block to adjust the pump’s output displacement and flow rate for the whole hydraulic system.
It bears continuous high-frequency friction and extrusion loads during operation. Surface scratching, hard layer peeling or thermal ablation will accelerate piston shoe wear, cause internal pump leakage, reduce volumetric efficiency, and lead to insufficient pressure build-up and abnormal noise of the hydraulic system. D1P series adopts forged alloy steel with surface quenching treatment for heavy-duty durability.
2. Saddle Bearing
This is the heavy-duty supporting bearing assembled at the bottom mounting position of the swashplate, also named swashplate trunnion bearing. It bears the full hydraulic reaction force transmitted from pistons to the swashplate and supports free swinging of the swashplate for displacement regulation.
As a high-load rolling friction pair, pitting, roller breakage or clearance enlargement will result in swashplate shaking, unstable pump output flow, jitter of executive mechanisms and mismatched coordination with the main Hydraulic valve. Severe damage will cause pump seizure and breakdown of the entire hydraulic system. It is a vulnerable part in frequent impact working conditions.
3. Control Valve
In Danfoss D1P pump configuration, this refers to the pump internal servo control valve assembly (also called displacement control valve or LS load-sensing control valve), belonging to a precision built-in Hydraulic valve. It receives load pressure feedback signals from the hydraulic system and pilot hydraulic oil to push the servo piston, driving the swashplate to adjust its angle automatically.
It realizes constant power, load sensing and pressure cut-off control logic, matching pump output with actual working demands intelligently. Common failures include spool sticking, internal orifice clogging and seal damage, which lead to unregulated pump displacement, weak equipment action and unstable pressure of the hydraulic system.
General Application & Overhaul Scenarios
These three spare parts are essential for full overhaul of worn Danfoss D1P145/193/260 pumps. Replacement is necessary when the unit suffers system pressure fluctuation, slow response, pump housing vibration, overheating and power attenuation of the hydraulic system, caused by contaminated hydraulic oil, long service hours and heavy overload operation. After replacement and commissioning, the pump can restore OEM performance and match peripheral Hydraulic valve assemblies perfectly.
Product Characteristics
1. Manufactured per Danfoss original dimensional tolerances, interchangeable installation without machining modification.
2. High-alloy forging and precision grinding process, suitable for continuous high-pressure operation of industrial and construction machinery hydraulic system.
3. Matched set design to avoid premature secondary wear of mating components after single-piece replacement.
English Version for Quotation Documents
Danfoss D1P145/193/260 Spare Parts Specification
1. Product Overview
These are critical overhaul spare parts for Danfoss D1P series axial piston pumps in 145/193/260cc displacements, serving heavy construction machinery and industrial hydraulic stations. Working with external Hydraulic valve manifolds, they constitute the core power adjustment unit of the complete hydraulic system.
2. Component Details
Swashplate
The pivotal component to change piston stroke and pump displacement. Its inclined surface mates with piston shoes; tilt angle variation controls oil delivery flow for the hydraulic system. Surface abrasion or burning triggers severe internal leakage, low efficiency and abnormal system noise. Made of carburized hardened alloy steel for heavy load resistance.
Saddle Bearing
Heavy-duty trunnion bearing supporting the swashplate, undertaking hydraulic reaction force during pump operation and enabling flexible swashplate pivoting. Bearing fatigue, pitting or excessive clearance leads to swashplate oscillation, hydraulic actuator judder and poor synchronization with Hydraulic valve commands, even pump locking and hydraulic system shutdown.
Control Valve
Integrated precision Hydraulic valve inside the pump housing, functioning as LS load sensing and servo displacement regulator. It processes feedback pressure signals from the hydraulic system to actuate the servo cylinder and reposition the swashplate. Malfunctions like spool jamming or orifice blockage cause failed pump regulation, sluggish machine movements and unstable system pressure.
Application & Replacement Purpose
For full refurbishment of worn D1P series pumps with symptoms of power loss, overheating and unstable hydraulic system operation. OEM-standard dimensions ensure direct fit and restoration of factory working performance.
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