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SBS140 (E25-329) H without gearbox 272-6959 Hydraulic pump
A8V0200
HYDRAULIC PUMP A8V0200 (DX420) - 400914-00248
SK140SRLC
K7V63DTP
Hydraulic pump
R140-9S
31Q4-10020
Hydraulic pump
This is not a distinct pump type per se, but a critical control refinement applied predominantly to axial piston swashplate pumps, making them essential for efficient excavator operation. The core pump structure remains as described in the first point. The key addition is a sophisticated pressure-compensating control mechanism integrated into the swashplate angle adjustment system. This mechanism constantly monitors the outlet pressure of the pump. Its principle dictates that when the system pressure reaches a pre-set maximum (the compensator setting), the control mechanism automatically reduces the swashplate angle, thereby decreasing pump displacement (flow output). This prevents pressure from rising further, protecting the system from overload. Structurally, this involves a hydraulic compensator valve (often pilot-operated), pressure sensing lines, and the linkage connecting it to the swashplate servo piston. When downstream pressure is below the compensator setting (e.g., during digging when the cylinder is moving), the pump delivers maximum commanded flow. As resistance increases and pressure approaches the set limit (e.g., when the bucket hits an immovable object or reaches the end of its stroke), the compensator valve shifts, directing pilot pressure to the servo piston to destroke the pump, holding pressure constant while flow drops to only what's needed to compensate for internal leakage.
FAQ
1.What is the warranty time of the products?
The warranty time is 3/6 months based on the item details; We don't provide warranty time for original and used products.
2.What is your delivery time?
Generally, we will arrange the goods within 24 hours after your payment; if not in stock, the delivery time will be communied in advance, usually 3-7 days
3.What are your main products ?
We are specialized in spare parts for excavator hydraulic system, such as travel motor,swing motor, travel gearbox,swing gearbox,gear parts, hydraulic pump,hydraulic parts,etc.If you need other excavator parts, we also can supply as your requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Year Established:
2013
Total Annual:
20000-3000000
Employee Number:
50~93
Ecer Certification：
Verified Supplier
GZ Yuexiang Engineering Machinery Co., Ltd.
GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t... GZ Yuexiang Engineering Machinery Co., Ltd.
GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t...
