20/912800 OEM-Quality Tandem Hydraulic Gear Pump For JCB

20/912800 Hydraulic Pump: Product Overview

The 20/912800 hydraulic pump from Olive Branch Hydraulics is a 2-section tandem gear pump supplied with original-equipment quality (原厂原装品质). It is for main hydraulic pump enquiries on JCB 3CX and 4CX backhoe loaders, and each order is checked against the machine PIN and an approved interface drawing before production starts.

The same catalogue row also lists 20/903100, 20/902900 and 7029122001. Buyers also search these as 20912800, 20-912800, 20903100, 20-903100, 20902900 and 20-902900.

These numbers are reference points for matching. They are not automatically interchangeable.

Exact fit depends on the PIN and the approved interface drawing. Spanish, French and Russian enquiries for the same unit often arrive as bomba hidráulica de engranajes tándem 20/912800, pompe hydraulique à engrenages tandem or гидронасос 20/912800.

All units are supplied EXW Hebei, China, directly from our production site.

Technical Specifications: What to Confirm Before Ordering

Four interface details decide whether a JCB 3CX/4CX twin pump bolts on and runs correctly: the shaft, the mounting flange, the port layout and the rotation. Section displacement is confirmed from the required pump configuration, sample or approved drawing before quotation.

Parameter	Catalogue Reference	Confirm Before Order
Pump type	2-section tandem external gear pump	Front and rear section order on the drawing
Drive shaft	Straight keyed shaft	Shaft diameter, key width, length from flange face
Mounting flange	2-hole oval flange	Bolt centre distance, pilot (spigot) diameter
Main port	Four-bolt flange port	Port bore, bolt pattern, bolt thread
Section outlets	One outlet per section	Outlet position, port type and thread standard
Rotation	Fixed for each build	Clockwise or counter-clockwise, viewed from the shaft end
Section displacement	Confirm for the ordered configuration	Sample measurement or approved drawing
Machine fit	JCB 3CX, 4CX backhoe loaders	Machine PIN and the number on the fitted pump

How a 20/912800 or 20/903100 Enquiry Is Matched

You send the machine PIN and the part number on the fitted pump.

You add photos of the shaft end, the mounting flange and every port face, or send a sample.

Our engineers prepare an interface drawing showing the shaft, flange, ports, rotation and section order.

You approve the drawing in writing. Quotation and production follow that approved revision.

Key Features of the Tandem Gear Pump

A single drive input powers two gear sections, each with its own outlet. The section order and outlet positions follow the approved drawing, not a generic catalogue image.

Straight keyed shaft: machined to the shaft diameter, key size and protrusion length on the approved drawing. Custom shaft lengths and key dimensions can be quoted.

2-hole oval mounting flange: bolt centres and pilot diameter are checked against the drawing so the pump seats on the existing drive housing.

Four-bolt main port flange: the bolt pattern and port bore match the drawing, with hose connections checked before installation.

Custom ports and flanges: port types, thread standards and flange layouts can be changed to suit your hoses, with each change recorded on the drawing.

Rotation fixed at build: confirmed from the shaft end before machining. A gear pump turned against its rated rotation typically fails to prime and may be damaged.

Pre-shipment inspection: before packing, every order's interface features are checked against the approved drawing revision.

White-label or custom packaging: neutral cartons, or your brand, labels and part numbers printed to your artwork.

Why Choose Olive Branch Hydraulics for JCB 3CX/4CX Twin Pumps

We manufacture hydraulic gear pumps and build every order to an approved drawing. Olive Branch Hydraulics handles configuration review, quotation and order coordination from Hebei.

Drawing Control and Inspection

One approved drawing revision per order, covering the shaft, flange, ports, rotation and section order.

Small-batch trial runs before volume orders, so the fit can be confirmed on your own machines.

Quality documents are issued for each order and cover only that order's verified inspection records.

Wholesale and Distributor Orders

Quotations are tiered by quantity, so distributors can price stock against their own resale margin. The quotation sets the MOQ, lead time, carton packing details and payment terms, and the price basis is EXW Hebei, China.

For regional distribution, volume and territory terms are agreed in writing for each partner.

OEM/ODM and Private Label Supply

Requirement: you send a drawing, a sample or the PIN, plus any custom shaft, flange or port changes.

Sample: we build a trial unit to the approved drawing.

Confirmation: you test the fit and approve the sample.

Production: the batch is built to the same drawing revision and inspected before shipment.

Delivery: the goods are released EXW Hebei with your branding, labels or barcodes applied.

Your drawings, brand artwork and customer information are used only for your orders.

Trial Orders for New Buyers

Small-batch trials and sampling can be agreed for distributors, e-commerce sellers and new brands testing demand. The sample cost, timing and freight are set out in the quotation.

20/912800 Tandem Gear Pump FAQ

Is 20/912800 interchangeable with 20/903100, 20/902900 or 7029122001?

Not automatically. They share a catalogue row, but the fit is confirmed only after the PIN and the shaft, flange, port and rotation details match an approved drawing.

What is the displacement of each section?

We confirm the displacement of each section from the required configuration, sample or approved drawing before ordering.

What do you need to quote a JCB 3CX or 4CX twin pump?

We need the machine PIN, the number on the fitted pump, photos of the shaft, flange and ports, the quantity and the destination country. A sample or drawing shortens the matching step.

Can the shaft, flange or ports be customised?

Yes. The shaft length, key size, flange layout, port type and thread standard can all be built to your approved drawing.

Do you supply samples before a bulk order?

Yes. Samples and small-batch trials are available, and the sample fee, timing and freight are stated in the quotation.

What are the MOQ and lead time?

Both are set in the quotation and depend on the quantity, the configuration and any custom features. Tiered pricing applies to larger quantities.

Can the pumps be packed under our own brand?

Yes. White-label and custom packaging are available, including your logo, labels and barcodes printed from your artwork.

Which trade terms apply?

Prices are quoted EXW Hebei, China. Payment terms are agreed in the quotation.

Request a 20/912800 Pump Quotation

Send us the machine PIN, the number on the fitted pump, photos of the shaft, flange and ports, your order quantity and your destination market. In return you will receive an interface drawing for approval, a factory-direct EXW Hebei quotation with quantity tiers, and sample terms.