Gear Pump Supplier in India: Bucher, Casappa and Rexroth High Pressure Gear Pumps
Gear pumps do the unglamorous work in hydraulics. They are fixed displacement, mechanically simple, tolerant of contamination that would destroy a piston pump, and cheap enough that most plants keep a spare on the shelf. As a gear pump supplier in India, Yashvi Hydraulics ships more of these by unit count than any other pump type.
This guide covers the difference between external and internal gear designs, the main series Yashvi Hydraulics supplies, and how to specify one correctly.
External versus internal gear pumps
External gear pumps
Two meshing gears in a close-fitting housing. Fluid is carried around the outside of each gear from inlet to outlet. Simple, robust, inexpensive, and available in single, double and triple stacks driven from one shaft.
Trade-off: they are noisier than other designs and pressure ripple is higher. For power packs, mobile equipment and general industrial duty that rarely matters.
Internal gear pumps
An inner gear rotates inside a larger outer ring gear. The meshing action is gradual rather than abrupt, which makes these pumps markedly quieter and gives much lower pressure ripple. They also generally handle higher pressure and give better volumetric efficiency.
Trade-off: more expensive. Specified where noise matters (indoor machinery, test rooms, hospitals, plastics plants running continuously) or where pressure requirements exceed what an external gear pump will take.
The series Yashvi Hydraulics supplies
Bucher QX internal gear pumps
Swiss-made internal gear pumps known for very low noise and high pressure capability. The QX series covers a broad displacement range and is widely specified on presses, plastics machinery, lifts and test equipment where acoustic performance matters.
Yashvi Hydraulics is a Bucher pump supplier in India handling the QX range along with Bucher motors and power unit components. These are premium units and priced accordingly, so we will tell you honestly when an external gear pump would do the job.
Casappa PLP and Magnum series
Italian external gear pumps. The PLP (Polaris) series covers PLP10, PLP20 and PLP30 frame sizes, and the Magnum range extends the pressure and displacement envelope. Very common on agricultural machinery, tippers, cranes and mobile equipment.
As a Casappa pump supplier, Yashvi Hydraulics quotes PLP singles, doubles and triples along with the mounting and shaft variants.
Rexroth AZPF external gear pumps
The Rexroth external gear family, with AZPF as the core series and AZPG, AZPS, AZPB and AZPN covering different frame sizes and pressure classes. Available in multi-stack configurations. Yashvi Hydraulics supplies AZPF as part of our wider Rexroth range.
Parker PGP and PGM series
Parker’s external gear pump and motor family, widely used on mobile and industrial equipment. Yashvi Hydraulics quotes PGP alongside the Parker Denison vane range for customers standardising on one brand.
Comparison
| Series | Type | Noise | Best suited to |
|---|---|---|---|
| Bucher QX | Internal gear | Very low | Presses, plastics, lifts, test rooms, indoor machinery |
| Casappa PLP / Magnum | External gear | Moderate | Agricultural, tippers, cranes, mobile equipment |
| Rexroth AZPF | External gear | Moderate | Power packs, presses, material handling |
| Parker PGP | External gear | Moderate | Mobile and general industrial |
How to specify a gear pump correctly
- Displacement in cm³ per revolution. Flow in litres per minute equals displacement times rpm divided by 1000, less volumetric losses. At 1440 rpm a 16 cm³ pump gives roughly 22 litres per minute.
- Working pressure. Specify your continuous pressure, not the peak. Running an external gear pump continuously at its intermittent rating shortens life sharply.
- Rotation. Clockwise or anticlockwise viewed on the shaft end. Most gear pumps are not reversible without an internal change.
- Mounting flange. SAE A, SAE B, European four-bolt or a proprietary pattern.
- Shaft. Splined, keyed or tapered, with the correct diameter and length.
- Ports. Thread type and size, and their orientation relative to the mounting.
Send those six items to Yashvi Hydraulics with the old pump’s model code and we will confirm an exact match or a safe equivalent.
Why gear pumps fail
Gear pumps are tolerant, not immortal. The common failure modes are:
- Cavitation from a restricted suction line, blocked strainer or oil too thick at start-up. The signature is a sharp rattling noise and pitting on the pressure faces.
- Contamination wearing the gear faces and side plates, which shows up as falling flow and rising noise. Filtration is the fix; see our filter elements.
- Over-pressure, usually because a relief valve was cranked up to force a sticky machine to work.
- Shaft misalignment, which puts radial load on a bearing that was not sized for it.
Unlike vane pumps, gear pumps are generally not economic to rebuild in the field. When one is worn, replacement is normally the right call, and our hydraulic pump range covers the alternatives.
Supply Across India, Dubai and Export Markets
Yashvi Hydraulics despatches nationwide from our base in India. Regular delivery destinations include Delhi NCR covering Noida, Gurgaon, Faridabad and Ghaziabad, Mumbai and Pune, Kolkata and Howrah in West Bengal, plus Ahmedabad, Rajkot, Chennai, Coimbatore, Bengaluru, Hyderabad, Ludhiana and Jamshedpur.
For overseas customers, Yashvi Hydraulics ships regularly to Dubai, Abu Dhabi, Sharjah and Jebel Ali in the UAE, and to Dammam, Jubail and Riyadh in Saudi Arabia. We also export to Kenya, South Africa, Russia and the United States. Export packing and documentation are handled in-house, and we quote on ex-works, FOB or CIF terms as you prefer.
Frequently Asked Questions
Is Yashvi Hydraulics an authorised Bucher distributor?
No. Yashvi Hydraulics is an independent supplier, dealer and importer. We source Bucher QX units through our import channels and also supply tested-compatible alternatives, stating clearly on the quotation which you are buying. Ask any supplier claiming authorised distributor status to show you the authorisation letter.
Internal or external gear pump for my application?
If noise is a complaint or your pressure requirement is above what an external gear pump comfortably handles, go internal. Otherwise external is the sensible economic choice. Yashvi Hydraulics will give you a straight recommendation rather than defaulting to the more expensive option.
Can I replace a Casappa pump with a Rexroth AZPF?
Frequently yes, provided displacement, pressure rating, rotation, mounting flange, shaft and ports line up. Send both the original code and photographs of the installation to Yashvi Hydraulics.
What is the highest pressure a gear pump will take?
It depends entirely on series and frame size. Good external gear pumps handle 250 to 280 bar continuous; quality internal gear pumps go higher. Beyond that you are into piston pump territory.
Do you supply gear pumps to Dubai?
Yes. Yashvi Hydraulics ships gear pumps regularly to Dubai, Abu Dhabi, Sharjah and Jebel Ali, and to Dammam and Riyadh in Saudi Arabia.
Request a Quote From Yashvi Hydraulics
Send the model code stamped on your pump, valve or motor to Yashvi Hydraulics and we will confirm availability, price and lead time. If the nameplate is corroded or unreadable, send photographs of the unit from the shaft end and the port face along with details of the machine, and our team will identify it for you.
- Email: sales@yashvihydraulic.com
- Mobile: +91 93112 03153 / +91 95600 05194
Yashvi Hydraulics has supplied industrial hydraulic components since 2020, importing from Germany, the USA, Taiwan, China and Japan.
Brand names, series designations and part numbers on this page are used for identification purposes only. Yashvi Hydraulics is an independent supplier, dealer, importer and exporter of genuine and tested-compatible hydraulic components and is not affiliated with the manufacturers named.
