Product Description
Introducing the MRF Series - a cutting-edge solution designed to revolutionize your fluid handling capabilities. Micro Gear Pumps Crafted to excel in dynamic environments, our pumps are engineered for flow rates between 8 to 67 liters per minute and offer a versatile pressure differential ranging from 0.5 to 14.5 bar. They efficiently manage viscosities from 0.4 to 3000 mPas, comparable to water. Customize your experience with a variety of motor options tailored to your needs, including brushless, AC, stepper/servo, variable frequency, and explosion-proof motors. We offer comprehensive support with detailed selection data, CAD drawings, and STEP models to ensure seamless integration and optimal performance.,Experience durability and reliability with our standard pump material options: SS316L and HC276, ensuring robust performance across various applications.
Working Principle
Product Parameters
- Flow Range: Experience the dynamic versatility with a flow range of 8-67 l/m, ensuring seamless fluid management.
- Inlet Pressure: Adaptable and robust, this gear pump operates efficiently with an inlet pressure range of -0.9-10 bar.
- Pressure Difference: Tailored to your needs, our pump accommodates a pressure difference of 0.5-14 bar, dependent on material viscosity.
- Temperature: Resilient in diverse conditions, the pump functions between -20-160°C, with options for custom temperature ranges.
- Viscosity Range: Engineered to handle a broad viscosity spectrum of 0.4-3000 cps, catering to various industrial applications.
- Max. Gravity: Built for strength, the pump supports a maximum gravity of 1.8, ensuring robust performance.
- Motor Options: Flexible solutions with AC motors, brushless DC motors, servo motors, and inverter explosion-proof motors to match your specific requirements.
- Inlet & Outlet Thread: Designed with precision, featuring an inlet and outlet thread of G 1 1/4 for secure and reliable connections.
- Non-standard Customize: Offering OEM machine ancillary components and servo systems to suit your bespoke application needs.
Secure Features & Advantages
Explosive view:

Features:
- Pulsation-free precise conveying - This positive displacement pump ensures a seamless, pulsation-free flow with precision that can reach an impressive accuracy of +/-0.5% when paired with a servo or stepper motor.
- Strong vacuum suction, high pressure and smooth delivery, enabling efficient delivery of low viscosity liquids even under demanding middle to high-pressure conditions.
- Zero leakage - The innovative magnetic drive coupled with a static O-ring guarantees that the medium within the pump remains perfectly isolated, preventing any leakage to the outside environment.
- Excellent workmanship and MD - With a focus on optimizing the gear shaft and flow channels, our designs ensure extended service life. Incorporating lean manufacturing concepts and state-of-the-art processing technologies, this external gearing pump is crafted for high-end applications.
- Model selection specialization - Leveraging extensive operational experience with thousands of micro gear pumps, we offer specialized selection evaluations and tailored solutions that minimize your risk.
Advantages:
- Wide displacement range: From 0.18ml/r to 17ml/r, our pump meets the demands of most micro flow applications with ease.
- High pressure differential: Standard pressure range of 10-25.5 bar, with capabilities reaching up to a robust maximum of 4Mpa.
- Long service life: Featuring reinforced PEEK gears paired with high-strength nano ceramic shafts, this combination significantly enhances wear resistance, extending the pump's service life. High gear consistency and interchangeability: Thanks to precision CNC hobbling from Japan, our gears offer remarkable consistency and interchangeability.
- Temperature range: Spanning -120ºC to 180ºC, our use of high-performance magnetic materials and enhanced magnet over-molding techniques effectively resolve issues related to thermal expansion and bulging at elevated temperatures.
- High wear-resistance: Utilizing a confidential formulation of high-quality bearing-grade PEEK, this material exhibits superior wear resistance, with extensive data to support its longevity. ☆☆☆☆☆ by using of nano-ceramic shaft while using SS316L is ☆, and ceramic is ☆☆.
- Capable of long-term operation at ambient temperatures up to 100ºC.
- Strong ability of industry application and accurate pump selection data analysis through sophisticated software, transcending traditional experiential methods.
- Comprehensive testing ability for all critical elements, with a testing regime that ensures traceability within our systems.
- High Gear accuracy testing capability provided by the German-engineered Winzer Gear Testing device.
- Service life: Exceptional longevity of over 20,000 hours, compared to the typical 6,000-8,000 hours offered by competitors.
Applications

Product Diagram

Theroetical Flow Rate
Theoretical Flow
Pump |
Motor speed(rpm) |
Order No. |
Size |
750 |
960 |
1450 |
2850 |
3300 |
MRA5/13 |
1/8 |
0.150 |
0.192 |
0.290 |
0.570 |
0.660 |
MRA7/13 |
0.293 |
0.374 |
0.566 |
1.112 |
1.287 |
MRA10/13 |
0.450 |
0.576 |
0.870 |
1.710 |
1.980 |
MRA12/13 |
0.525 |
0.672 |
1.015 |
1.995 |
2.310 |
MRB10/16 |
1/4 |
0.750 |
0.960 |
1.450 |
2.850 |
3.300 |
MRB12/16 |
0.900 |
1.152 |
1.740 |
3.420 |
3.960 |
MRB17/16 |
1.275 |
1.632 |
2.465 |
4.845 |
5.610 |
MRB19/16 |
1.425 |
1.824 |
2.755 |
5.415 |
6.270 |
MRC15/22 |
3/8 |
1.800 |
2.304 |
3.480 |
6.840 |
|
MRC20/22 |
2.625 |
3.360 |
5.075 |
9.975 |
|
MRC8/37 |
3.000 |
3.840 |
5.800 |
11.400 |
|
MRC12/37 |
4.500 |
5.760 |
8.700 |
17.100 |
|
MRD25/30 |
1/2 |
5.250 |
6.720 |
10.150 |
19.950 |
|
MRE18/37 |
3/4 |
6.750 |
8.640 |
13.050 |
25.650 |
|
MRE24/37 |
9.000 |
11.520 |
17.400 |
34.200 |
|
MRE34/37 |
12.750 |
16.320 |
24.650 |
48.450 |
|
MRF34/39 |
1 1/4 |
16.500 |
21.120 |
31.900 |
62.700 |
|
Theoretical Flow (L/min)
Performance Curve
Kindly be noted that:
Non-standard product please contact our sales for detailed information.
We offer unique solution of pump to each individual working condition.
OUR SERVICE



FAQ
PART ONE - ABOUT TRADING
Q: Are you a manufacturer of trading company?
A: We are a professional manufacturer engaged in the research and development, production and sales of precision gear pumps.
Our product has passed the test.
The factory has passed the ISO9001-2015 quality system certification of Germany Rheinland and the on-site verification of SGS, the products have passed the CE and ROSH certification, and obtained the certification of several classification societies.
Q: What's your MOQ?
A: There is no MOQ requirement, but the price will be gradient adjusted according to the MOQ size.
Q: How can I get free sample?
A: Free samples are available for some products.
To obtain the free samples, customers need to provide relevant product application scenario video, developed equipment pictures, installation location structure 3D drawing, the progress of the new project (the information provided by the company will be strictly confidential), free samples need to pay logistics costs.
Q: What's your lead time?
A:
1. We have enough stock for conventional pump head, it can be send in 3 days, special non-standard pump head takes 15-20 days
2. Some A B B motors/Delta servo/stepper motors/brushless motors are in stock, please consult our sales engineers.
Q: What is your warranty and after-sales service policy?
A: Warranty for all products is 12 months from delivery, if the warranty period of the pump failure, you can contact our sales engineers, send the pump back to the factory testing, we will take photos, issue inspection report and quote for related parts costs.
Q: Can you provide OEM/ODM service for your products?
A: Yes
Q: What's your payment term?
A: 1. We accept 30% advance payment upon order, balance before delivery.
2.If the pump can be send in 7 days, better 100% upon order.
3.We accept T/T, order on Made-in-China platform, others canbe negoitated according to actual situation.
Q: Do you offer spare kits for your pump?
A: Yes, we have enough spare kits for each pump, if you need to change, send the series number / pump code on the pump, we will send you corresponding spare kits.
Q: How can I choose the model and get the quotation?
A: You just send the working condition for the pump you request, we will choose the proper model and work out technical sheet and official quotation for you to analyze.
PART TWO - ABOUT PUMP TECHNICAL
Q: How is the service life of your gear pump?
A: The normal service life of the micro gear pump can reach more than 25,000 hours.
Below are the source of longevity data:
1. By conducting comprehensive working condition simulation and verification,
2. Our valued customers'feedback statistics table provides essential insights,
3. The statistical table of maintenance records from our after-sales service department.
Q: What are the critical wearing parts of the gear pump, and how can these issues be effectively addressed?
A: The core wearing components primarily include: driving gear shaft, driven gear shaft, bearings, inner magnetic drive, and PTFE sealing ring.
Given that pumps are dynamic equipment, encountering diverse challenges under extreme working conditions is inevitable, including wear and tear of parts and post-warranty expiration.
To maintain your seamless production, we recommend implementing a robust plan for ongoing operations andbackup systems. If the design space or budget constraints are present, procuring a set of critical spare parts as an emergency backup is advisable.
Our precision-grade micro gear pumps are engineered with a two-stage modular design, ensuring swift and hassle-free replacement of worn parts.
With us, you will benefit from the following premier services:
-Authentic and reliable spare parts kit
-Efficient global logistics and distribution
-Relevant technical support to assist in selecting the right spare parts (spare parts consultation)
-Professional selection service (selection consultation)
Customers purchasing JONSN precision micro gear pump spare parts must provide the gear pump code (as depicted in the image), enabling us to verify the gear fit clearance per the code and proceed with customized production and processing for exceptional consistency.
Q: What are the specifications for temperature resistance, pressure resistance, and differential pressure?
A: Standard pump heads are designed to withstand temperatures from -20°C to 80°C, with customization available for extreme conditions ranging from -60°C to 160°C.
The conventional pump head system is capable of enduring pressure resistance up to 4MPa, with certain pump head systems rated at 6MPa.
Depending on viscosity, the pressure differential between the inlet and outlet exceeds 25bar.
Q: What essential factors should be considered during pump installation and piping system design?
A: For optimal design, it is advisable to install the pump below the tank, securely fasten the motor base with screws, and ensure the positive pressure of the medium is directed to the pump inlet, particularly for viscous mediums with low fluidity. Owing to the compact nature of the micro gear pump, avoid placing piping or instrumentation against the pump body.
Keep inlet piping as short as possible, and ensure the inlet pipe is equipped with a filter to maintain cleanliness and prevent particle contamination.
Pipe diameter considerations: For viscous media transfer, it is advisable for the pipe diameter to exceed that of the pump inlet size. Use the pipe diameter recommended by our company's selection software to ensure optimal flow requirements.
Q: What chemicals can the micro gear pump transport?
A: Our pumps are meticulously crafted with a variety of materials, ensuring there is a suitable match for most fluids. Given the extensive range of working conditions and diverse fluids, we strongly advise testing the pump within your specific circuit under actual working conditions. In scenarios where your materials include dichloromethane, tetrahydrofuran, nitric acid, sulfuric acid, butyllithium, trimethylgallium, pyridine, liquid chlorine, dimethylacetamide, among others, we recommend reaching out to us. Our experts are available to provide recommendations if your conventional pump head cannot transport these specific media, offering customized solutions tailored to your unique working conditions.
Q: Can the pump be used for metering?
A: Absolutely! All our pumps are positive displacement pumps, impeccably suited for metering applications. The precision and consistency of delivery are contingent on the pump driver/control system used and the fluid characteristics, achieving delivery accuracy of +/-0.5%. For further details and bespoke advice, please contact us.
Q: Which motors can be used?
A: We offer an extensive selection of drive types to cater to various needs, including DC Brushless, DC Brush, AC Inverter, Servo, Stepper Motor, and Air Motor.
Q: How can we decide the input power of the pump?
A: JONSN provides expert calculations for determining the necessary input power, tailored to your specific working requirements and the characteristics of the fluid you are handling.
Q: What is the noise value of the pump?
A: Noise levels are influenced by installation parameters, motor speed, and fluid type. Our gear pump has a reference noise value of 55 dB measured at 1 meter under a pressure difference of 3 bar with a rotational speed of 3000 rpm.
Q: Can liquids containing solid particles be transported?
A: Gear pumps are not suitable for transporting media with solid particles as they can cause damage to the pump.
Q: Can the pump be reversed?
A: While the factory standard flow direction is marked with an arrow, our pumps are designed to operate in both directions if needed.
Q: Can the pump run dry?
A: Our pumps feature gears and bushings crafted from PEEK, which is modified and post-treated for enhanced resistance to dry wear. While dry running should be minimized to extend pump life, you can witness our durability in the dry run test video.
Q: Is the pump self-priming?
A: Yes, our pumps are designed for self-priming capabilities. Please refer to our comprehensive datasheetfor more information.
Q: What is the operating temperature of the pump and motor?
A: Our conventional pump heads are engineered to operate efficiently across a temperature range of -20 ~ 80°C. Please consult with our specialists if yourapplication requires temperatures exceeding 80°C or other specific conditions, as factors like magnets, clearances, and motor bearings may need to be considered.
Q: How does viscosity affect gear pump and system performance?
A: When working with viscous substances, the volumetric efficiency of the pump is enhanced and gear pump leakage is minimized. Viscosity impacts speed; thus, reducing speed is crucial to avoid overloading. In contrast, low-viscosity fluids result in more significant internal leakage. As the outlet pressure rises, internal leakage intensifies and volumetric efficiency declines. Nevertheless, when pressure, speed, and medium temperature remain stable, internal leakage rate stays unchanged, maintaining a linear relationship with flow rate. Please consult factory for details.
Q: What happens when a gas and liquid mixture is pumped through a gear pump?
A: Effortlessly, the gas/liquid mixture traverses the pump without complications. Although, the presence of gas might increase the pump's noise level, and cause a temporary fluctuation in the load, evidenced by changes in outlet pressure and motor power consumption.
Q: What are the minimum and maximum speeds allowed?
A: The maximum speed parameters, detailed in each model's data sheet, are based on water as medium. For thicker fluids, it is necessary to lower the maximum speed . The minimum speed is largely dictated by motor start-up speed control, flow rate, and internal leakage considerations.
Q: Are Micro Gear Pumps FDA Approved?
A: Our pumps are crafted with materials that comply with FDA standards.
Q: What is the recommended filtering level?
A: We advise installing a 25-micron filter at the pump's inlet, with ample filter surface area to prevent pressure drops, thereby safeguarding the pump's interior.
Q: What affects pump and motor life?
A: Numerous factors impact the longevity of pumps and motors. Crucial considerations include the frequency of on/off cycles, operational speed, load (pressure), and fluid contamination levels.
Q: What is decoupling (aka demagnetization)? Can this be used as a safety feature?
A: Should the pump load and motor torque surpass the magnetic coupling's capacity, a magnetic drive pump will decouple, accompanied by noise. In such events, the motor must cease immediately for troubleshooting.
Q: How do we adjust flow rate?
A: In positive displacement pumps, adjusting the motor speed is the simplest way to modify flow. There exists an almost linear correlation between speed and flow.
Q: What is the starting capacity of the micro gear pump?
A: Starting capability is pump-specific and is influenced by multiple factors such as fluid viscosity, line size, steam pressure, speed, and whether the pump operates wet or dry.
Q: What is internal leakage of gear pump?
A: Internal leakage in a gear pump occurs when fluid from the pressure side reverts to the inlet side via gear gaps, affecting efficiency. Although common in all gear pumps, precision micro gear pumps experience minimal leakage. Low-viscosity fluids traverse these small gaps with ease, yet the pump operates more efficiently with more viscous or thicker fluids.
Q: What is cavitation?
A: Cavitation is the emergence of vapor cavities ('bubbles' or 'voids') in a liquid, caused by an inlet pipe diameter smaller than the pump's flow rate capability. These cavities result from the fluid and physical properties of the pump system (pressures, temperature, pump speed). Cavitation is notorious for causing noise and premature pump wear.
Q: How can I recognize Jonsn pump models?
A: Each meticulously crafted pump bears a distinct LOGO and a precise laser-etched code on its end face. This important information showcases the manufacturing date, unique product code, and the sequential serial number (S/N), which serves as a pivotal identifier. With the S/N code, you can effortlessly trace the original configuration sheet and access comprehensive test records, providing you with a well-rounded understanding of your pump's pedigree and performance.
Congratulations on becoming well-versed in gear pump specifics! Your dedication to understanding the intricate details of our reliable pumps showcases your professionalism and expertise in the field of fluid technology.