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{"title":"Excavator Parts 123-1993 A8VO160 Main Pump 1231993 345B 330B Hydraulic Pump","imgUrl":"https:\/\/img.chinax.com\/nimg\/49\/66\/3b4fe15dc546a80bebb77b86b7b9-200x200-1\/excavator_parts_123_1993_a8vo160_main_pump_1231993_345b_330b_hydraulic_pump.jpg","attrs":{"Brand Name":"","Model Number":"330B","Certifiion":"ISO9001","Place of Origin":"Japan"}}
{"title":"Excavator E120B Hydraulic Main Pump VRD63 0990246 120B Hydraulic Pump Assembly","imgUrl":"https:\/\/img.chinax.com\/nimg\/46\/83\/e6316716b4eed318fe09a33336c8-200x200-1\/excavator_e120b_hydraulic_main_pump_vrd63_0990246_120b_hydraulic_pump_assembly.jpg","attrs":{"Brand Name":"","Model Number":"E120B","Certifiion":"ISO9001","Place of Origin":"Japan"}}
The A4VG250 is a high-displacement, variable-displacement axial piston pump from the Rexroth A4VG series. Featuring a swashplate design, it delivers stable high-pressure output and is suitable for closed-loop hydraulic systems in concrete pump trucks, asphalt pavers, shield tunneling equipment, and large-scale construction machinery.
High pressure rating; impact-resistant and stable under heavy-duty operating conditions
Responsive variable displacement with diverse control options (e.g., EP, HD)
Reinforced friction pairs and sealing components; resistant to high temperatures and leakage
Direct drop-in replacement; available from stock; supports bulk B2B procurement; warranty included
Product Parameters
Maintenance Guide
The hydraulic pump is a critical component in heavy machinery. Regular maintenance extends its service life and ensures normal machine operation. Follow the steps below for proper hydraulic pump maintenance.
Maintenance Steps
Check for leaks: Inspect the hydraulic pump regularly for leaks, including pipes, joints, and connections.
Replace the filter element: Replace the filter element regularly to ensure the cleanliness of the hydraulic oil.
Check the oil: Regularly check oil quality and oil level, and replace or replenish the hydraulic oil in time.
Lubrication: Add lubricating oil to the lubrication points regularly to ensure normal operation.
Regular inspection: Check various parameters and working conditions according to the operation manual.
Precautions
Before performing maintenance, disconnect the power supply and wait for the hydraulic system to cool.
Use hydraulic oil of the specified model and specifications. Never mix hydraulic oil of different brands.
If the pump operates abnormally or makes unusual noises, stop it immediately and have it inspected by a professional technician.
About Xinfeng Machinery (XF) Parts
Advantages
Warehouse Display
Packaging and Delivery
Frequently Asked Questions
1. How do I quickly and accurately buy the products I need?
Provide the original part number to us for verification.
2. How long have you been in the excavator parts industry?
We have been engaged in excavator parts since 1998.
3. What if I don't know the part number?
Please send us the size and pictures of the old product for identification.
4. What is the warranty on your products?
The warranty is 6 or 12 months, depending on the specific product.
5. How long is your delivery time?
Normal delivery time is 3–5 days for in-stock products after receiving payment. If not in stock, we will inform you of the required time.
6. Which shipping terms do you offer?
By sea, air, or express (DHL, FedEx, TNT, UPS, EMS).
7. What is your MOQ?
Small orders and sample orders are acceptable.
8. Do you offer after-sales service?
Yes, we provide comprehensive after-sales support.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Agent,Trading Company,Seller
Year Established:
1998
Total Annual:
500000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
About Xinfeng Machinery (XF) parts:
Xinfeng Machinery Parts Company was established in 1998. It is a professional team composed of high-quality technical personnel integrating production, maintenance, sales, and service. It is committed to providing customers with high-quality and effic... About Xinfeng Machinery (XF) parts:
Xinfeng Machinery Parts Company was established in 1998. It is a professional team composed of high-quality technical personnel integrating production, maintenance, sales, and service. It is committed to providing customers with high-quality and effic...
