803004033 803004559 XCMG Loader Hydraulic Gear Pump

803004033 803004559 XCMG Loader Hydraulic Gear Pump

Product Overview: 803004033 Hydraulic Gear Pump and 803004559 Pump

The 803004033 hydraulic gear pump and the 803004559 pump share one catalogue group, SKU OBH-LD-068, variant B. It is an aluminium-housed XCMG loader hydraulic pump listed for XCMG / SEM loader travel circuits; exact loader models are not stated.

Supplier listings link the same codes to a CBT-E550 reference, a CBN-E550 reference and an XCMG ZL30G pump in steering service. These are identification clues, not verified interchangeability.

Fitment is checked against your original pump.

Key Features

• Housing: aluminium, per our catalogue. The alloy grade is not confirmed, so name a grade in your RFQ if your specification requires one.
• Drive shaft: grooved, projecting shaft. Spline or key dimensions are not published and must be measured on your pump.
• Side port: shown with a turquoise blue protective ring, with four fixing holes around the port face.
• Front flange face: shown in the smaller right-hand image. The flange standard is not stated.
• Gallery: one original composite image plus two direct crops of it. These are not three independent views; request extra angles with your RFQ.
• Code pairing: 803004033 and 803004559 are grouped in the catalogue. An identical configuration for both codes is not documented.
• Variant B vs. variant A: variant A (803004032 / 803092152) is catalogued separately. No replacement relationship is claimed between the two variants.

Technical Specifications: What to Confirm Before Ordering

Confirm the actual circuit, displacement, rotation and mounting geometry against the original pump. Numerical displacement, pressure, speed and installation dimensions have not been verified for this catalogue group.

Fitting Checklist

1. Photograph the nameplate, shaft end, flange face and both ports of the pump being replaced.
2. Record the loader brand, model, serial number and the circuit the pump serves.
3. Note any code stamped or cast on the housing, including CBT or CBN markings.
4. Measure shaft diameter, projection, groove profile, flange hole centres, mounting pilot diameter and port connection dimensions.
5. Send the measurements with your photos. We compare them with variant B before quoting.

Why Choose Us

Olive Branch Hydraulics makes hydraulic gear pumps, steering pumps and related components in Xinji, Hebei, China. All orders are quoted EXW.

Wholesale and Distributor Orders

• Quantity tiers are quoted per part code once the configuration is confirmed.
• MOQ and delivery are product-specific and set after configuration sign-off.
• Carton count and packed weight are confirmed with the order quantity.

OEM / ODM Supply

1. Send your original sample or drawing.
2. We measure it and check the configuration against variant B.
3. We make a sample for your approval.
4. Batch production proceeds against the approved sample, with EXW handover.

Private Label and Packaging

White-label marking and custom packaging are available subject to confirmation of artwork, labels and quantity. List barcode or label formats in your RFQ.

Engineering and QC Teams

List required inspection items and documents in your RFQ. We confirm in writing which ones we can supply before the order.

FAQ: 803004033 / 803004559 Pump

Are 803004033 and 803004559 the same pump?

This is not confirmed. Both codes sit in catalogue group OBH-LD-068 variant B, but each one is checked against your original pump.

Is this a travel pump or a steering pump?

The answer depends on your machine. Our catalogue lists travel circuits, while supplier listings describe steering service on the XCMG ZL30G, so identify the circuit on your loader.

Do CBT-E550, CBN-E550 and 5000031 refer to this pump?

These are supplier clues only. One supplier groups both codes with 5000031 and CBT-E550, and another labels the pump CBN-E550; interchangeability is not verified.

How does variant B differ from variant A?

Variant A covers 803004032 / 803092152 and is catalogued separately. We make no replacement claim between them, so compare shaft, flange and port data.

What should an RFQ include?

Include the part code, loader model, circuit, photos, measurements and quantity. Add any packaging or label requirements.

Request a Quote

Send your part code, loader model, pump photos, measurements and quantity range through the enquiry form. We will return an EXW quotation with quantity-tier pricing and sample options after the configuration is confirmed.