1/5

Excavator Piston Pump

Kat Infra logo
Kat Infra
Service Provider , Retailer, Exporter, Importer — Mumbai, Maharashtra, India · Replies in ~24–48 hours
Export Ready
₹ 3,967.56 /Unit In stock
Inclusive of all taxes
MOQ: 1 Unit
Lead time: On request
GST invoice
Origin: India
Export ready
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Export Snapshot
Minimum order
1 Unit
HSN Code
83414990
Origin
India
Lead time
On request
Port of dispatch
On request
Packaging
Standard export packaging
Shelf life / storage
As per product specification
Export markets served
Afghanistan flag AF Algeria flag DZ Azerbaijan flag AZ Bahrain flag BH Bhutan flag BT +15 others
Ability to customise
As per OEM brief
Values shown are for Kat Infra.
Company Kat Infra
Kat Infra logo
Kat Infra

KI offers a wide range of original spare parts, from industry leaders such as Caterpillar, Cummins, Komatsu, Hitachi, Atlas Copco, Detroit Diesel, Volvo Construction, Case, New Holland, Buhler, Bobcat. KI also supplies spare parts for Terex, Liebherr, Grove, TigerCat, Waukesha, Ingersoll Rand, Sandvik, Challenger, JCB, Perkins, Isuzu, Kubota and many other brands. In addition to all the major original brands, KI also offers a wide range of aftermarket parts at the most competitive pricing. We only work with certified aftermarket companies that stand behind their products, thus we stand by their product and offer warranty on all aftermarket supplies. Our experienced sales professionals answers over 95% of all quotes within 24 hours. Furthermore, we provide our long term clients with a log in to our online portal. This allows them to get their own quotes in real time and see up to the minute availability. Outside India KI has a dominant customer and dealer network in many countries such as France, Finland, Jordan, Mangolia, Dubai, Australia, Gayana Georgetown, Ukraine, Kazakhstan, Russia, and the United Arab Emirates. This enables KIC to deliver any spare parts to anywhere in the world (off course with the exception of the countries on the embargo act). Many of the Indian multinational project company’s prefer KI to supply high value spares directly to their off shore projects.

Registered address: Mumbai, India. Industry: Tools, Machinery & Components › Mining, Material Handling Machinery & Equipment.

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Established
2017
Employees
1–10
GST
27ANCPK6545R1ZB
IEC code
ANCPK6545R
Export markets
Afghanistan flag AF Algeria flag DZ Azerbaijan flag AZ Bahrain flag BH Bhutan flag BT +15 others
Member since
May 2024
Turnover
$250,000 - $1 MM
Incorporation type
On request
Product details

ypes of Piston Pumps

Axial Piston Pump (most common in excavators)


Radial Piston Pump (less common)


Axial piston pumps are further classified into:


Swash Plate Type


Bent Axis Type


Most modern excavators use variable displacement axial piston pumps due to their efficiency and ability to adjust flow based on system demand.


3. Key Components

Cylinder Block (Barrel): Houses multiple pistons arranged in a circular pattern.


Pistons: Move in and out to draw in and push out hydraulic fluid.


Swash Plate: Angle controls piston stroke length, affecting fluid displacement.


Valve Plate: Directs the intake and discharge of hydraulic fluid.


Charge Pump: Feeds hydraulic oil to the main pump to prevent cavitation.


4. Working Principle

The engine drives the pump via a coupling.


The swash plate tilts, causing pistons to reciprocate.


During the piston downstroke (suction), hydraulic fluid is drawn into the chamber.


During the upstroke (discharge), fluid is pushed into the hydraulic circuit.


The swash plate angle is controlled to vary the flow output depending on operator commands and system load.


5. Features

Variable Displacement: Adjusts flow to match load requirements, improving fuel efficiency.


Load Sensing: Detects pressure demand and adjusts flow automatically.


High Pressure Rating: Typically operates between 3000–5000 psi (210–350 bar).


Compact and Durable Design: Built for high-performance, continuous operation in harsh environments.


6. Applications in Excavators

Boom lift and lower


Arm extension and retraction


Bucket curl and dump


Swing motor operation


Travel and steering


7. Common Brands

Kawasaki


Rexroth (Bosch Rexroth)


Komatsu


Caterpillar


Doosan / Daewoo


Hydac


8. Maintenance Considerations

Use clean hydraulic fluid to prevent wear.


Monitor pump noise, vibration, and heat.


Regularly check pressure relief settings.


Inspect for internal or external leakage.

Description provided by Kat Infra.

Variable Displacement Axial Piston Pump

3000–5000 psi (210–350 bar)

Swash Plate Adjustable for Variable Flow

Automatic Adjustment Based on Pressure Demand

Compact and Durable Design for Harsh Environments

Boom, Arm, Bucket, Swing Motor, Travel Motor Control

Fits Kawasaki, Bosch Rexroth, Komatsu, Caterpillar, Doosan Excavators

Supports Pressure Relief Settings and Leakage Inspection

Engine Driven via Coupling to Swash Plate Assembly

Multiple Pistons in Circular Cylinder Block

Specifications
Pump Type
Axial Piston, Swash Plate Type
Displacement
Variable Displacement
Operating Pressure
Up to 5000 psi (350 bar)
Flow Rate
Adjustable According to Load Demand
Material
High-Grade Steel and Alloy Components
Weight
Varies by Model, Approximately 30-50 kg
Mounting
Standardized Mounting Flanges Compatible with Major Brands
Temperature Range
-20°C to 80°C Operating
Noise Level
Designed for Low Noise Operation
Hydraulic Fluid Type
Compatible with Standard Excavator Hydraulic Oils
Use cases
Category
machinery and tools > hydraulic parts > hydraulic pumps
Primary application
Brand
Product type
Product
Logistics & handling
Lead time
On request
Packaging
As per buyer requirement
Storage condition
As recommended by supplier
Origin
India
Form
As listed by supplier
Commercials Kat Infra
Minimum order
1 Unit
Lead time
On request
Payment terms
As per negotiated commercial agreement
Frequently asked by buyers
What distinguishes the variable displacement feature in this excavator piston pump?

The variable displacement design allows the swash plate angle to adjust, thereby controlling the piston stroke length and flow output. This ensures optimal hydraulic fluid supply matched to load demands, enhancing fuel efficiency and operational responsiveness.

How does load sensing enhance the pump's performance in excavators?

Load sensing enables the pump to detect hydraulic pressure demand dynamically and automatically adjust the flow. This prevents unnecessary energy consumption and reduces heat generation, resulting in more efficient and reliable excavator operation.

Which components are critical for preventing cavitation in this piston pump?

The charge pump plays a crucial role by feeding hydraulic oil into the main pump, ensuring adequate lubrication and preventing cavitation, which could otherwise damage pistons and cylinder blocks.

Is this piston pump compatible with all excavator brands and models?

While designed to fit major brands such as Kawasaki, Bosch Rexroth, Komatsu, Caterpillar, and Doosan, compatibility depends on specific model configurations and mounting standards. It is recommended to verify model fitment before purchase.

What maintenance practices are essential for maximizing this pump’s lifespan?

Regular use of clean hydraulic fluid, monitoring for abnormal noise or vibration, checking pressure relief valve settings, and inspecting for internal/external leakage are vital maintenance practices to ensure longevity and optimal performance.

Question not answered? Sellers typically reply within 24–48 hours.

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Excavator Piston Pump
Excavator Piston Pump
₹ 3,967.56 /Unit