What are the available shipping methods and delivery times?

Courier (DHL, UPS, Fedex) takes 5-7 days, air freight takes 3-5 days, and sea freight takes 20-30 days. Urgent orders should use courier or air.

Which models are recommended for general-purpose applications?

General-purpose models like A4VG56, A4VG71, and A4VG90 are recommended due to their high versatility and readily available spare parts.

A4vg28-B1 Hydraulic Piston Pump for Excauator and Other Machinery

Name: A4vg28-B1 Hydraulic Piston Pump for Excauator and Other Machinery
Brand: Hangzhou PinXin Hydraulic Technology Co., Ltd.
SKU: 845350945

Zhejiang, ChinaHangzhou PinXin Hydraulic Technology Co., Ltd.

US$65.00-114.00

1 Piece

Product profile

Customization

Available

Structure

Radial Plunger Pump

Cylinder Number

Single Cylinder

Model NO.

A4VG28-B1

Drive Mode

Hydraulic Driven Reciprocating Pump

Pump Shaft Position

Vertical

Type

Radial

Power

Hydraulic

Straight Shaft Swashplate Piston Type

Pressureoil

Radial Plunger Pump Type

Valve with Flow

Material

Carbon Steel

Usage

Oil

Apply to

Excavator

Brand

Pinxin

Transport Package

Box or Customer Requirements

Specification

A4VG28-B

Trademark

Origin

China

HS Code

8413606090

Production Capacity

500 Pieces/Month

Key features

High Pressure Rating: Rated pressure 400 bar, peak pressure 450 bar, suitable for heavy-duty closed-loop systems.

Compact Integrated Design: Built-in oil supply pump and complete valve assembly for simplified installation.

High Efficiency Operation: Optimized flow path and dynamic balancing for low noise and long continuous operation.

Universal Interface: 32-series universal interface compatible with most host systems.

Diverse Control Options: Offers EP, HD, HW, and EZ control options for different application needs.

Global Shipping Options: Available via courier (5-7 days), air (3-5 days), or sea (20-30 days).

Comprehensive After-Sales: 24-hour technical support, free repair for non-human damage, and remote guidance.

Company profile

Importers and Exporters

Hangzhou PinXin Hydraulic Technology Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2016-02-03Nearest Port: shanghai, ningboAverage Response Time: ≤6.25hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CIF

AI-Powered supplier vetting

SummaryThe supplier is a China-based hydraulic components agent and distributor with over ten years of experience representing Rexroth and Sauer-Danfoss products, and it also provides hydraulic system design, production, maintenance, and technical services. It reports TS 16949 and ISO 9001 certifications, export experience of eight years, and export sales accounting for 51%–70% of total sales. Customization is available, but only as flexible or minor customization. Innovation evidence is limited: there was no new product in the past year, no ODM, no SDK, no 3D design service, and only one R&D engineer. Service-management controls are weak or undocumented, with no written procedures for complaint handling, corrective actions, or service-capability assessment. Overseas service infrastructure is absent, although the supplier has attended PTC ASIA and accepts multiple trade and payment terms. Quality assurance and traceability status are unknown, and reported quality-control testing equipment is zero. No specific...

Supplier typeThe supplier describes itself as an agent and distributor of Rexroth and Sauer-Danfoss hydraulic control components, while also offering system design, production, maintenance, technical services, and flexible or minor customization. It exports through agents and under its own import/export rights, with eight years of export experience.

CertificationsThe supplier reports holding TS 16949 and ISO 9001 supplier-management-system certifications. These are explicit certification claims, although the provided information does not include certificate numbers, validity dates, or scope.

After-Sales capabilityThe supplier states that it provides maintenance and professional technical services and reports lead times within 15 working days in both peak and off-season periods. However, it has no written complaint-handling, corrective-action, or service-capability assessment procedures, no overseas agents or branches, no overseas showroom, and serves zero countries overseas; therefore, formal and international after-sales support is not demonstrated.

R&D capabilityInnovation capability appears limited: the supplier has one R&D engineer, no available SDK, no 3D software design service, no ODM service, no professional-technology-supplier designation, and no new product reported in the past year. Its R&D engineer is assigned to developing new supply chains based on customer needs, but this does not establish strong product innovation.

Customization capabilityThe supplier explicitly offers flexible customization and minor customization for design services. It does not offer ODM, popular-brand OEM, or 3D software design services, so customization is available but appears limited in scope.

Product Q&A

Q:How do displacement and RPM correspond in the A4VG series?

Higher displacement results in higher flow rates but lower maximum operating speeds. For example, A4VG28 reaches 4250 rpm, while A4VG250 reaches 2400 rpm.

Q:What are the differences between EP, HD, HW, and EZ control options?

EP offers continuous stepless flow regulation for precision control. HD is hydraulic remote control for harsh environments. HW is mechanical-hydraulic servo for fast response. EZ provides two-stage flow switching for simple, low-cost applications.

Q:What are the rated and peak pressure limits of the A4VG series?

The rated pressure is 400 bar and peak pressure is 450 bar. The series can withstand short-term surges up to 500 bar.

Q:Can the A4VG pump be directly replaced in existing machines?

Yes, it features a 32-series universal interface compatible with most host systems and is designed for high-pressure closed-circuit hydraulic systems.

Q:How can I contact customer service for support?

We provide 24-hour technical support including remote guidance for installation, commissioning, and troubleshooting, plus free repair for non-human-caused damage within the warranty period.