How to Prime a Hydraulic Gear Pump: A Step-by-Step Field Guide
Skip priming and your gear pump dies in seconds. Learn the 5-minute procedure that prevents scoring, cavitatio…
| Model | AZPG |
| Type | Hydraulic Gear Pump |
| Performance | Stable Flow Output |
| Features | High Efficiency & Compact Design |
| Service | OEM & ODM Available |
| Options | Custom Shaft, Flange & Port |
| Compatibility | Industrial Hydraulic Systems |
| Application | Construction, Agricultural & Industrial Machinery |
The AZPG Hydraulic Gear Pump from Olive Branch Hydraulics is engineered as a direct, dimensionally interchangeable replacement for the Rexroth AZPG series, delivering continuous operating pressures up to 250 bar and intermittent peaks of 280 bar. Built for procurement teams that cannot afford field failures, every AZPG unit leaves our factory only after 100% pressure-bench testing, flow verification, and leak inspection — no exceptions.
As a factory-direct AZPG high pressure gear pump supplier, we serve OEMs and distributors across Europe, North America, the Middle East, and Southeast Asia with wholesale pricing, ISO 9001-certified production, and stable 15–35 day lead times. The standard AZPG series spans 22.5–100 cm³/rev; confirm the full model code for each order, giving buyers a single-source solution for construction machinery, agricultural equipment, industrial presses, and mobile hydraulic systems.
What separates our AZPG pumps in the tender process is not marketing — it is measurable performance: volumetric efficiency ≥ 94%, cast iron housing hardness HB 200–240, and gear tooth surface finish held to Ra 0.4 μm through in-house honing and grinding. Combined with SAE-standard mounting flanges and custom P/T port configurations, the AZPG pump drops into existing systems without redesign, protecting your customers' timelines and your margins.
Every specification of the AZPG gear pump is tied to a commercial outcome your buyers care about. Below is the direct feature-to-benefit mapping we present to procurement teams during technical qualification.
Standard AZPG nominal sizes include 22.5, 25, 28, 32, 36, 40, 45, 50, 56, 63, 70, 80 and 100 cm³/rev. The previous 90, 140 and 200 references are not confirmed standard AZPG sizes. Pressure, speed and mounting limits depend on the complete code and must be confirmed on the quotation.
| Parameter | AZPG Size 22.5 | AZPG-45 | Configuration to Verify | Configuration to Verify | Configuration to Verify |
|---|---|---|---|---|---|
| Displacement (cc/rev) | 22.5 | 45 | Confirm full model code | Confirm full model code | Confirm full model code |
| Rated Pressure (bar) | 250 | 250 | Confirm full model code | Confirm full model code | Confirm full model code |
| Peak Pressure (bar) | 280 | 280 | Confirm full model code | Confirm full model code | Confirm full model code |
| Speed Range (rpm) | 500–3500 | 500–3200 | Confirm full model code | Confirm full model code | Confirm full model code |
| Volumetric Efficiency | ≥ 94% | ≥ 95% | Confirm full model code | Confirm full model code | Confirm full model code |
| Oil Viscosity Range (cSt) | 10–300 | 10–300 | Confirm full model code | Confirm full model code | Confirm full model code |
| Operating Temp. (°C) | -20 to +80 | -20 to +80 | Confirm full model code | Confirm full model code | Confirm full model code |
| Mounting Flange | SAE A / B | SAE A / B | Confirm full model code | Confirm full model code | Confirm full model code |
| Weight (kg) | 4.8 | 7.2 | Confirm full model code | Confirm full model code | Confirm full model code |
All AZPG pumps use HLP/HM mineral hydraulic oil with recommended ISO cleanliness of 20/18/15 or better. Bi-directional rotation, tandem configurations, and integrated relief valves are available on request. Full CAD drawings (2D/3D STEP) are released after NDA signing.
The AZPG series is deployed by OEMs and MRO distributors across a wide range of high-duty-cycle applications where pressure stability and continuous service life are non-negotiable.
Buyers in the EU, North America, GCC, and ASEAN markets consistently specify the AZPG as a Rexroth cross-reference for aftermarket and OEM builds. If you supply into any of these verticals, our engineering team can confirm compatibility against your existing part numbers within 24 hours.
Olive Branch Hydraulics operates as a dedicated AZPG hydraulic gear pump OEM manufacturer. Approximately 60% of our AZPG output ships under private label or with customer-specified modifications. Our OEM program is structured for procurement teams that need predictable engineering support, not ad-hoc responses.
Sample MOQ is typically 1–2 units. Tooling for fully custom housings may require a one-time fee, refundable against subsequent orders above agreed volumes.
Transparent commercial terms are a core reason procurement teams migrate to Olive Branch Hydraulics as their industrial AZPG gear pump wholesale partner. The table below reflects our standard commitments for AZPG orders.
| Order Type | MOQ | Lead Time | Payment Terms |
|---|---|---|---|
| Sample order | 1 unit | 7–15 days | 100% T/T in advance |
| Standard stock model | 10 units | 15–20 days | 30% deposit / 70% before shipment |
| OEM customized | 50 units | 25–35 days | 30% deposit / 70% against BL copy |
| Annual contract (500+ units) | Negotiable | Rolling forecast | L/C at sight or open account |
Because we control gear machining, housing casting, honing, and assembly in-house, we typically quote 20–35% below equivalent European-branded AZPG pumps at matched performance specifications. Volume tiers begin at 100, 300, and 500 units per shipment. Ex-works, FOB (Ningbo/Shanghai), CIF, and DDP incoterms are all supported.
Quality control is not a checkpoint — it is embedded in every stage of AZPG production. Our ISO 9001-certified system enforces documented inspection at three critical stages, with serialized traceability on every pump.
No exceptions. Every AZPG pump that enters the packing area has a matching digital test record tied to its serial number, available to buyers on request.
Standard export packaging is designed to survive multi-modal transport to Europe, North America, the Middle East, and Southeast Asia without corrosion or impact damage.
Shipping options include sea freight (FCL/LCL from Ningbo or Shanghai), air freight for urgent samples, and express courier (DHL/FedEx/UPS) for small parcels. We work with buyer-nominated forwarders or offer our own consolidated logistics with DDP delivery to major EU, US, GCC, and ASEAN ports. Typical transit times: 25–35 days to EU/US main ports, 15–20 days to Middle East, 10–15 days to Southeast Asia.
Yes. Mounting flange, shaft dimensions, port positions, and overall envelope are matched to the Rexroth AZPG specification. In field replacements, no bracket or hose modification is required. Provide us the exact Rexroth part number and we will confirm cross-reference in writing.
Sample MOQ is 1 unit for standard displacements. Standard production MOQ is 10 units. For OEM-customized pumps with private labeling or non-standard shafts, MOQ is 50 units. We encourage sample validation before committing to bulk purchase orders.
Because we are the manufacturer — not a trader — factory-direct pricing typically runs 20–35% below equivalent European-branded AZPG pumps at matched performance. Volume discounts apply from 100 units per shipment. Request a quote with your target annual volume for tiered pricing.
Standard warranty is 12 months from shipment or 2,000 operating hours, whichever comes first, against manufacturing defects. Warranty claims are processed within 5 working days with replacement parts or credit notes. We provide English-language technical support and CAD drawings under NDA.
Common AZPG displacements (22, 45, 90 cc/rev) are held in semi-finished stock, allowing 7–10 day dispatch for orders up to 50 units. Air freight and express courier options are available for critical field-service scenarios. Notify us in advance to reserve stock allocation for your account.
If you are sourcing a reliable AZPG cast iron gear pump for sale at factory-direct pricing, Olive Branch Hydraulics is ready to support your next tender, aftermarket program, or OEM build. Our engineering and sales teams respond to technical inquiries within 24 working hours with drawings, samples, and firm quotations — not vague estimates.
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Contact Olive Branch Hydraulics today for pricing, lead time confirmation, and a serialized sample. Every quotation includes a full technical datasheet and pre-shipment QC protocol — because your buyers deserve certainty, and so do you.
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