NAQ HYDM00191 Hydraulic Tandem Double Gear Pump Shaft HGP-33A-F6/6R 15.87MM

( Brand: Naq ), ( Manufacturer Part Number: HYDM00191 ), ( Type: Hydraulic Pump ), ( Features: Easy Installation ), ( Fitment Type: Direct Replacement ), ( Oe/oem Part Number: Hgp33af66r, Hgp-33a-f6-6r, Hgp-33a-f6/6r ), ( Diameter Of The Shaft: 15.87mm ), ( Spitting Volume: 6-6 Ml/r ), ( Rated Pressure: 18/18mpa ), ( Maximum Pressure: 21/21mpa ), ( Rated Speed: 1800r/min ), ( Oil Inlet: 2-pt 3/4 ), ( Oil Outlet: 2-pt 1/2 )

Review NAQ New Hgp-33a-f6/6r Hydraulic Tandem Double Gear Pump Shaft Diameter 15.87mm

The **Naq HYDM00191 HGP-33A-F6/6R Hydraulic Tandem Double Gear Pump** is a high-performance, precision-engineered fluid power component designed for demanding industrial applications requiring reliable, efficient, and consistent hydraulic flow. This robust pump belongs to the tandem double gear series, featuring a compact yet durable construction optimized for medium to high-pressure hydraulic systems. The **shaft diameter of 15.87mm (0.625 inches)** ensures precise alignment and smooth operation within its housing, minimizing wear and maximizing longevity. Built with a **tandem gear configuration**, this pump delivers enhanced volumetric efficiency and reduced pulsation, making it ideal for applications such as hydraulic presses, material handling systems, mobile machinery, and automated industrial processes where steady fluid delivery is critical.

The **HGP-33A-F6/6R model** incorporates a **gerotor-style internal gear design**, combining the strengths of external and internal gear pumps for superior performance. The primary gear drives a secondary internal gear, creating a sealed fluid chamber that ensures minimal leakage and optimal efficiency across a wide operational range. The **F6/6R designation** indicates a specific flow rate and pressure rating, typically accommodating pressures up to **210 bar (3,000 psi)** while maintaining consistent output even under fluctuating loads. This pump is engineered with **high-grade alloy steel components**, including hardened gears and precision-machined shafts, to withstand the rigors of continuous operation in harsh environments.

One of the standout features of this hydraulic pump is its **adjustable displacement mechanism**, allowing operators to fine-tune flow rates to match application requirements. This flexibility makes it versatile for systems where variable speed or pressure adjustments are necessary without compromising performance. The **sealed bearing housing** and **high-quality elastomeric seals** ensure minimal contamination ingress, protecting internal components from abrasive particles and extending the pump s service life. Additionally, the **compact yet robust design** allows for easy integration into existing hydraulic systems, reducing installation complexity while maximizing space efficiency.

For applications demanding reliability and precision, the **Naq HYDM00191** is backed by stringent quality control measures, ensuring consistent performance and durability. Whether used in **hydraulic actuators, conveyor systems, or heavy-duty machinery**, this tandem double gear pump delivers the power and consistency required to maintain operational excellence. Its **low-maintenance design**, combined with the use of **high-performance lubricants and corrosion-resistant materials**, makes it a cost-effective solution for industries prioritizing efficiency and longevity. With its **15.87mm shaft**, this pump strikes the perfect balance between compactness and structural integrity, ensuring seamless operation in even the most demanding hydraulic applications.

### **Pros and Cons of buying a Naq Hydm00191 HGP-33A-F6/6R Hydraulic Tandem Double Gear Pump (Shaft: 15.87mm)**

1. **High Efficiency and Reliability** Tandem double gear pumps are known for their robust design, which ensures consistent flow rates and pressure stability, reducing the risk of hydraulic failures.

2. **Durable Construction** The use of high-quality materials (likely steel or hardened alloys) in the gears and housing suggests longevity, especially in industrial or heavy-duty applications.

3. **Compact and Space-Efficient** The design is optimized for compact installations, making it suitable for systems with limited space.

4. **Versatile Compatibility** The 15.87mm shaft diameter is standard in many hydraulic systems, allowing easy integration with existing machinery or aftermarket upgrades.

5. **Low Maintenance Requirements** Double gear pumps typically have fewer moving parts compared to some other types (e.g., piston pumps), reducing wear and tear over time.

6. **Consistent Flow Rate** The tandem configuration helps maintain steady hydraulic performance, which is critical in applications requiring precise control (e.g., CNC machines, presses, or conveyors).

7. **Cost-Effective for Mid-Range Applications** While not the cheapest option, it strikes a balance between performance and price, making it suitable for small to medium-scale industrial use.

8. **Quiet Operation** Gear pumps are generally quieter than some alternatives (e.g., vane pumps), which can be beneficial in noise-sensitive environments.

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1. **Pressure Limitations** Double gear pumps are not ideal for high-pressure applications (typically max 250-350 bar). If your system requires higher pressures, a different pump type (e.g., piston or radial piston) may be necessary.

2. **Sensitivity to Contamination** Gear pumps are prone to wear if hydraulic fluid contains particles or debris. Regular filtration and fluid maintenance are essential.

3. **Lower Efficiency at Low Speeds** Performance may degrade if operated at very low speeds, leading to potential slippage or reduced flow.

4. **Limited Temperature Range** Most hydraulic gear pumps operate optimally within a specific temperature range (e.g., 10 C to 80 C). Extreme temperatures can affect viscosity and pump efficiency.

5. **Potential for Leakage** Seals and shaft connections can wear over time, leading to fluid leaks if not properly maintained.

6. **Noise at High Speeds** While generally quieter than some pumps, gear pumps can generate more noise at higher rotational speeds compared to other designs.

7. **Compatibility with Fluid Viscosity** Performance varies with fluid viscosity. Thicker fluids may require adjustments in pump speed or could lead to overheating.

8. **Higher Initial Cost Than Basic Pumps** Compared to simpler gear pumps or centrifugal pumps, this tandem model is more specialized and thus may have a higher upfront cost.

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The **Naq Hydm00191 HGP-33A-F6/6R** is a well-engineered tandem double gear pump suitable for **mid-range hydraulic applications** where **reliability, compactness, and consistent flow** are priorities. It excels in **industrial machinery, conveyors, presses, and other systems requiring steady hydraulic power** without extreme pressure demands. However, it is **not ideal for high-pressure, high-speed, or heavily contaminated environments** without additional safeguards.

- The hydraulic fluid is clean and within the recommended viscosity range.

- The system pressure does not exceed the pump s rated capacity.

- Regular maintenance (filter changes, seal inspections) is performed.

- The shaft and mounting are properly aligned to prevent excessive wear.

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- You need a **durable, mid-range hydraulic pump** for **steady flow applications** (e.g., industrial conveyors, small presses, or CNC auxiliary systems).

- Your system operates within **moderate pressure (under 300 bar) and temperature ranges**.

- You prioritize **compact design and ease of integration** with existing setups.

- Your application requires **high pressure (above 350 bar)** or **extreme speeds**.

- Your hydraulic fluid is **highly contaminated** or lacks proper filtration.

- You are working in **very high-temperature environments** (e.g., above 90 C).

- A **simpler or more cost-effective pump** (e.g., a basic gear pump) would suffice for your needs.

- For **higher pressures**, evaluate **piston or radial piston pumps**.

- For **ultra-clean environments**, consider **gerotor or vane pumps** with better sealing.

- For **budget constraints**, a **standard single gear pump** may be adequate if tandem performance is unnecessary.

If the application aligns with the pump s strengths, this is a **solid, long-term investment** for reliable hydraulic performance. Otherwise, consult a hydraulic specialist to ensure optimal system compatibility.

Details:

Manual measurements may vary by 1-3cm; all dimensions listed are approximate. Package Include, 1x Hydraulic Tandem Double Gear Pump 15.87mm shaft. Final product specifications override all. Camshaft Crankshaft.

For other vehicles. Type: Hydraulic Pump, Brand: NAQ, Features: Easy Installation, Fitment Direct Replacement, Manufacturer Part Number: HYDM00191, OE/OEM HGP33AF66R, HGP-33A-F6-6R, HGP-33A-F6/6R, Diameter of the Shaft: 15.87mm, Spitting volume: 6-6 ml/r, Rated pressure: 18/18MPa, Maximum 21/21MPa, speed:: 1800r/min, Oil inlet:: 2-PT 3/4, outlet: 1/2. Boxes, APO/FPO or Military Mail Box. We'll promptly resolve these issues to your satisfaction.

part #: hydm00191 prices

• $374.99-$410.00

specifications hydraulimoto:

• brand: Naq
• mpn: Hydm00191
• type: Hydraulic Pump
• features: Easy Installation
• fitment type: Direct Replacement
• oe/oem part number: Hgp33af66r, Hgp-33a-f6-6r, Hgp-33a-f6/6r
• diameter of the shaft: 15.87mm
• spitting volume: 6-6 Ml/r
• rated pressure: 18/18mpa
• maximum pressure: 21/21mpa
• rated speed: 1800r/min
• oil inlet: 2-pt 3/4
• oil outlet: 2-pt 1/2

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• # reviews: 1222
• city: Rancho Cucamonga, California

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offer hydraulimoto:

• availability: In Stock
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• started: April 8, 2026
• quantity: 1
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• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Hydraulic Pneumatic Motors

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