LD-90R250 Closed Circuit Travel Piston Pump | Large Displacement Hydraulic Replacement Pump

LD-90R250 Closed Circuit Travel Piston Pump | Large Displacement Hydraulic Replacement Pump

1. Product Overview

HYDSUNRIDA is a professional hydraulic pump manufacturer with more than 10 years of manufacturing experience. We concentrate on R&D, precision production, domestic substitution and export solutions for high-pressure heavy-duty hydraulic components.LD-90R250 closed circuit travel piston pump belongs to upgraded LD series heavy-duty pump. It delivers large flow output, stable ultra-high pressure, strong torque capacity, outstanding shock resistance and low temperature rise, extending overall service life. Widely adopted on large agricultural machines, forestry equipment, construction machinery and underground mining rail vehicles. It is a popular 1:1 hydraulic replacement pump for heavy machinery operating in Russian mines and other frigid Russian-speaking regions.This hydraulic piston pump adopts newly manufactured high-strength alloy internal components. Standard universal mounting dimensions, oil port layout and control interfaces enable direct plug-and-play replacement. No mechanical modification, pipe reworking or repeated commissioning is required during equipment maintenance.All LD-90R250 pumps are manufactured in accordance with GB/T3766-2015 hydraulic standards and certified by ISO9001:2015 and SGS. Every unit undergoes four strict offline inspections: high-pressure endurance test, leakage tightness test, running-in test and precision calibration to guarantee stable performance and low failure rate.Ample inventory supports fast delivery. We provide OEM & ODM customization for extreme working conditions and complete hydraulic system package service. Our hydraulic pumps are exported in bulk to Russia and optimized for severe underground mining environments, earning consistent trust from global industrial clients.

2. Basic Technical Parameters

Main Complete Model: LD-90R250KP5BC80TMF1H03FAC

Nominal Displacement: 250 ml/r

Rated Working Pressure: 450 bar

Peak Shock Pressure: 480 bar

Structure: Closed-circuit axial piston structure

Control Type: Load-sensing adaptive control

Cooling Design: Integrated large-volume charge pump cooling system

Environmental Adaptability: Dust-proof, low-temperature resistant, moisture-proof, 

anti-fatigue operation

With ultra-large displacement design, LD-90R250 maintains steady and sufficient flow output with abundant power reserve for long-time full-load continuous operation. 

It can run 24 hours non-stop under high pressure without pressure drift or flow attenuation. Excellent anti-overload and anti-shock characteristics make it suitable for bumpy travel, abrupt load fluctuation and frequent start-stop cycles. Specially optimized for cold climate in Russia and humid, high-dust underground mining conditions, ideal for underground rail trolleys and mining monorail locomotives.

3. Full Range LD-90R250 Series Models

All LD-90R250 series closed circuit piston pumps feature unified standard installation dimensions, oil ports and shaft specifications for direct replacement. Compared with ordinary hydraulic pumps, LD upgraded version strengthens wear-resistant core assemblies, high-pressure weather-resistant seals and low-pulsation oil circuits with better anti-leakage, anti-shock and high-temperature resistance performance. All models are available from stock for equipment overhaul, new machine matching and hydraulic system upgrading.Common Models:

• LD-90R250KP5BC80TMF1H03FAC 

• LD-90R250KP3BC60TMF1H02FAC

• LD-90R250LP5BC80TMF1H03FAC

• LD-90R250LP3BC60TMF1H02FAC

• LD-90R250KP5BC80TMF2H03FAC

• LD-90R250KP3BC60TMF2H02FAC

• LD-90R250LP5BC80TMF2H03FAC

• LD-90R250LP3BC60TMF2H02FAC

4. Core Advantages of LD-90R250 Hydraulic Pump

1. Direct Factory Supply & Traceable QualityWe own complete precision machining, assembly and testing production lines. All products are self-produced without outsourcing repackaging. Mature production technology and strict quality control support stable mass supply with full quality traceability.

2. Large Displacement & Ultra-high Pressure for Heavy-duty Scenarios250ml/r displacement and 450bar rated pressure effectively solve common troubles on heavy machinery: insufficient power, poor climbing performance, pressure loss under high temperature and vibration under heavy loads, covering most heavy-duty working conditions.

3. Alloy Reinforced Internal Components, Longer Service LifeKey spare parts including cylinder block, pistons, valve plate and main shaft are forged from high-hardness wear-resistant alloy after hardening and precision grinding. Strong anti-wear and anti-impact capacity supports round-the-clock continuous operation and reduces machine maintenance costs.

4. Upgraded Composite High-pressure Seals, Effectively Prevent Oil LeakageEquipped with heavy-duty composite sealing assemblies featuring wide temperature adaptability, anti-aging and anti-corrosion performance. It avoids typical faults such as high-temperature oil leakage, low-temperature pressure drop and excessive internal leakage after long-term running.

5. 1:1 Replacement, Ready Stock & Competitive CostStandard universal connection interfaces support direct replacement of original hydraulic pumps without equipment modification. Factory direct sales eliminate middleman markup. Sufficient inventory ensures fast lead time and obvious cost advantages.

6. Customization Service & Professional After-sales SupportWe accept customized parameters of pressure, flow rate and sealing materials for special working environments, and undertake complete closed hydraulic system projects. Services contain free pre-sales model selection, delivery follow-up and installation technical guidance.Warranty policy: 12 months warranty for complete pump; 18 months warranty for core wearing parts (piston, valve plate).

5. Application Fields

LD-90R250 large displacement closed circuit travel piston pump is designed for heavy-duty closed-loop travel hydraulic systems, applicable to long-hour heavy-load operation, dusty and extreme temperature outdoor working environments.

• Large Agricultural Machinery: Heavy tractors, combine harvesters, silage harvesters, cotton pickers, large balers

• Heavy Forestry Machinery: Log forwarders, logging grapple trucks, forestry loaders

• Road Construction Machinery: Road rollers, asphalt pavers, road milling machines, road maintenance equipment

• Mining Machinery: Mining transport vehicles, underground loaders, mobile crushing stations, off-road special vehicles

The pump is deeply optimized for Russian mining equipment and perfectly matched with underground monorail locomotives and rail traction systems. It runs reliably under harsh underground conditions with heavy dust, low temperature, frequent start-stop and continuous traction. It is the preferred hydraulic replacement pump for upgrading hydraulic systems of Russian mining enterprises.

6. Manufacturer Service Guarantee

HYDSUNRIDA has focused on hydraulic pump domestic substitution and international export business for over ten years with complete enterprise qualifications and abundant spot supplies. LD-90R250 closed circuit travel piston pump stands out with stable high pressure, sufficient large flow and excellent low-temperature durability.Our company prioritizes exports to Russia. Products are specially optimized for local frigid weather and tough underground mining conditions. Reliable cold resistance and heavy-load performance have been continuously verified through bulk orders from Russian mining companies.We welcome single-unit orders, bulk engineering matching and OEM/ODM customization. We provide reliable, cost-effective domestic hydraulic solutions for heavy industry, mining enterprises and customers from Russian-speaking regions.