Quality Belparts Hyundai R480-9S 31QB-10030 31QB-10011 Hydraulic Main Pump For K5V200DT-139R-9N1A Excavator factory

Belparts Hyundai R480-9S 31QB-10030 31QB-10011 Hydraulic Main Pump For K5V200DT-139R-9N1A Excavator

Name: Belparts Hyundai R480-9S 31QB-10030 31QB-10011 Hydraulic Main Pump For K5V200DT-139R-9N1A Excavator
Brand: BELPARTS MACHINERY LIMITED
SKU: R480-9S
Price: 475.00 USD
Availability: InStock

Place of Origin:Made in China

Brand Name:Belparts

Model Number:R480-9S

Minimum Order Quantity:1 piece

Price:Negotiable price

Payment Terms:T/T, Paypal and Trade Assurance

Supply Ability:1000pieces

Product Details

Highlight:

K5V200DT-139R-9N1A hydraulic main pump

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31QB-10011 hydraulic main pump

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Belparts Hyundai hydraulic main pump

Model: R480-9S

Part Number: 31QB-10030

Name: Hydraulic Pump Assembly

Appliion: Crawler Excavator

Brand: Hyundai

Power: Hydraulic

Place Of Origin: Guangdong, China

Condition: New

Product Description

Belparts Hyundai R480-9S 31QB-10030 31QB-10011 hydraulic main pump for K5V200DT-139R-9N1A excavator

Product name	Belparts excavator hydraulic main pump
Place of Origin:	China(mainland)
Model:	R480-9S
Part number:	31QB-10030 31QB-10011 XJBN-00977
Payment term:	T/T & PayPal
Delivery time:	Within 3 days after receiving the payment
Packing:	Standard exporting packing or as required

List of spare parts

#	Part No	Part Name	Qty.
*	31QB-10011	MAIN PUMP *-1,-2,-3,-4	1
*-1	@	FUEL INJECTION PIPE & NOZZLE	1
111	XJBN-00976	SHAFT-DRIVE(F)	1
113	XJBN-00977	SHAFT-DRIVE(R)	1
114	XJBN-00572	COUPLING-SPLINE	1
123	XJBN-00571	BEARING-ROLLER	2
124	XJBN-00978	BEARING-NEEDLE	2
127	XJBN-00569	SPACER-BEARING	3
130	XJBN-00568	BOOSTER	1
N012	XJBN-00680	BLOCK-CYLINDER	2
N151	XJBN-00681	PISTON	18
N152	XJBN-01522	SHOE	18
153	XJBN-00683	PLATE-SET	2
156	XJBN-00564	BUSHING-SPHERICAL	2
157	XJBN-00541	SPRING-CYLINDER	18
211	XJBN-00023	PLATE-SHOE	2
N212	XJBN-00012	PLATE-SWASH	2
N214	XJBN-00013	BUSHING-TILTING	2
251	XJBN-00560	SUPPORT-S.P.	2
261	XJBN-00025	COVER(FR)-SEAL	1
263	XJBN-00979	COVER(RR)-SEAL	1
271	XJBN-01594	CASING-PUMP	2
311	XJBN-00559	COVER-VALVE(F)	1
312	XJBN-00558	COVER-VALVE(R)	1
N313	XJBN-01387	PLATE(R)-VALVE	1
N314	XJBN-01388	PLATE(L)-VALVE	1
401	XJBN-00028	SCREW	4
402	XJBN-00555	SCREW-HEX SOC HD	4
406	XJBN-00355	SCREW-HEX SOC HD	8
466	XJBN-00356	PLUG	4
468	XJBN-00031	PLUG	4
490	XJBN-00032	PLUG	28
492	XJBN-00234	PLUG	1
N531	XJBN-00981	PIN-TILTING	2
532	XJBN-00703	PISTON-SERVO	2
534	XJBN-00034	STOPPER(L)	2
535	XJBN-00035	STOPPER(S)	2
N548	XJBN-00360	PIN-FEED BACK	2
702	XJBN-00040	O-RING	2
706	XJBN-00982	O-RING	1
710	XJBN-00983	O-RING	2
717	XJBN-00984	O-RING	2

The hydraulic pump operates based on the principle of positive displacement, where mechanical force (from the engine) drives the pump to create fluid flow. The key steps in its operation include:

Suction Phase: As the pump’s internal mechanism (e.g., gears, pistons, or vanes) rotates, it creates a vacuum that draws hydraulic fluid from the reservoir.
Compression Phase: The trapped fluid is pressurized as the pump’s moving parts reduce the chamber volume, forcing the fluid into the hydraulic system.
Discharge Phase: The high-pressure fluid is delivered to control valves, cylinders, or motors to perform mechanical work.

Common types of hydraulic pumps used in excavators include:

Gear Pumps – Simple, cost-effective, and suitable for medium-pressure appliions.
Piston Pumps – High efficiency and pressure capability, ideal for heavy-duty excavators.
Vane Pumps – Provide smooth flow with moderate pressure, often used in compact excavators.