Monthly Archives: December 2023

Requirements of lubricating oil for decanter centrifuge

During the daily operation some wear will occur to the Decanter centrifuge. So maintenance is imperative in order to extend the service life of the equipment. Lubricating oil must be used regularly. Below we introduce the precautions for adding lubricating oil to the Decanter centrifuge.

The Decanter centrifuge has two main components that need to be lubricated. One is the bearing and the other is the reducer. The bearing is greased, commonly known as butter; the reducer is lubricated, that is, gear oil. Butter is grease. One of the main quality indicators for evaluating grease is the freezing point. Freezing point is the maximum temperature when the oil is not flowing under the specified conditions. The freezing point of butter is higher than normal temperature. When the heating temperature exceeds the freezing point, it can melt and flow. The melted butter can lubricate the bearings, reduce the friction between the components, reduce wear, and have the effect of cooling.

Gear oil should have good abrasion resistance, load resistance and suitable viscosity. In addition, it should have good thermal oxidation stability, anti-foam resistance, water separation performance and anti-rust performance. Gear oil is a lubricating oil with excellent performance. Gear oil is a kind of important lubricating oil mainly composed of petroleum lubricating base oil or synthetic lubricating oil, which is added with extreme pressure anti-wear agent and oily agent.

  1. The lubricating oil should have a certain stability. In the working environment of some decanter centrifuges, the temperature difference between day and night is large. If the oil is poor, it will cause the formation of a lubricating film, which will not play a lubricating role. In order to prevent the occurrence of fire, lubrication should also have flame resistance.
  2. The selected lubricating oil should have certain thermal stability and oxidation resistance. Because the oil tank of the decanter centrifuge is small, the amount of lubricating oil is necessarily small. Moreover, the long-term operation of the decanter centrifuge will increase the temperature of the bearings and other parts, so the lubricating oil needs to be thermally stable.
  3. The working environment of the decanter centrifuge will be contaminated by dust, moisture and other impurities. Therefore, there are requirements for lubrication such as anti-rust and anti-corrosion functions. When impurities are contaminated in the lubricating oil, its performance will not be greatly affected. It does not affect the normal operation of the equipment as standard. Butter is usually added once a shift, gear oil is added at least once a week, and needs to be replaced once a month. So as to meet the maintenance needs of decanter centrifuge.

GNLW364-VFD Decanter Centrifuge for Overseas Chemical Plant

News from GN company this week: Recently, 1 set of Decanter centrifuge (GNLW364-VFD with VFD control panel and a Polymer Dosing Unit GNSJY3000) have been manufactured and ready to start serving for an overseas Chemical dewatering project.

To make sure this series of Decanter centrifuges will provide a reliable performance and the parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection for this set of equipment in each step.

As a leading manufacturer of separation and conveying equipment, GN consistently prioritizes product quality and considers the long-term benefits for our users. We take pride in introducing GN as a professional manufacturer in the field of decanter centrifuges, placing significant emphasis on the selection of raw materials. High-quality centrifugal casting or forging stainless steel materials are utilized, and for wearing parts, hard alloy protection is implemented.

The use of advanced CNC lathes, CNC centers, and CNC gantry milling machines at GN ensures superior machining accuracy for centrifuge parts. Regarding the dynamic balance of the decanter centrifuge, in addition to the standard low and medium-speed dynamic balance, GN employs a high-speed dynamic balance process. This process dynamically balances the centrifuge screw and bowl at the actual working speed, enhancing overall performance.

In terms of market applications, GN decanter centrifuges find widespread use across various industries. Our products have been exported to over 60 countries and regions globally, earning high praise from satisfied customers.

If you need any support about the operation and maintenance of GN’s equipment like Portable Decanter centrifuge, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

Tubular centrifuge sent to Middle East Biotechnology Company

In a recent development from GN company, we are excited to announce the completion of 1 set of Tubular centrifuge (Model GNGQ-142), marking a significant stride in our commitment to serving the evolving needs of a separation project of a Biotechnology Company in the Middle East.

A meticulous approach has been undertaken to ensure the dependable performance of the Tubular centrifuge. Our technical, production, and quality control departments have dedicated considerable effort to meticulous material selection, thorough preparation, every production stage, and exhaustive inspections throughout the manufacturing process. This meticulousness underscores our unwavering commitment to delivering equipment of the highest caliber.

As a conglomerate, GN Solids Control and GN Separation are the dynamic faces of GN company, representing a pinnacle in the manufacturing of high-performance solids control equipment, industrial decanter centrifuges, and an array of separation equipment.

GN Solids Control, with a global footprint in China, USA, and Australia, specializes in delivering innovative solutions encompassing solids control equipment, decanter centrifuge, waste management equipment, and shaker screens. As the first API-certified solids control equipment manufacturer from China, GN boasts an illustrious track record, having successfully exported its products to over 60 countries worldwide. On the other hand, GN Separation focuses on manufacturing industrial separation equipment, featuring high-quality components such as Decanter centrifuge, Vibrating Screen, Dewatering Screw Press and different types of  pumps.

Motivated by a dedication to precision and excellence, GN has made substantial investments in a cutting-edge manufacturing facility. This establishment includes CNC machining, balancing machines, material cutting, coating production, welding fabrication, and assembly workshops. With this vertically integrated production capability, GN takes a leading position, implementing rigorous quality control measures and ensuring timely deliveries that consistently surpass client expectations.

If you need assistance with the operation and maintenance of GN’s equipment, including the Decanter Centrifuge, Chemical Dosing Unit, or Screw Pump, feel free to contact GN. Our team of engineers holds extensive expertise in the industry, ready to provide steadfast support for your project’s success and cultivate a lasting partnership. We are prepared to offer online assistance and on-site guidance tailored to address specific scenarios, demonstrating our unwavering dedication to the success of your project and the enduring collaboration we aim to foster.

GN Screw Press Unit for South American Client

News from GN company this week: Recently, a set of Sludge dewatering screw press have been manufactured and ready to start serving for Wastewater Treatment project in South American. The model number of this screw press is GNDL301, and the inlet and outlet are equipped with flanges.


In order to ensure the dependable performance of the sludge dewatering screw press and the smooth, long-term operation of all its parts and components, our technical, production, and quality control departments have dedicated meticulous attention to material selection, preparation, every stage of production, and thorough inspections at each step.

GN Separation Equipment Co., Ltd, a subsidiary of Hebei GN Solids Control Co., Ltd, specializes in the manufacturing of industrial separation equipment, including centrifuges, vibrating screens, dewatering screw presses, and pumps. With a presence in the separation industry since 2007, our manufacturing plant is located in close proximity to Beijing, China. Despite our local base, our products have achieved global reach, being exported to over 70 countries worldwide, with more than 70% tailored for international clientele.

To better serve our global customers, GN has established branches in Houston, USA, and Moscow, Russia, providing localized support. Committed to quality, our production management adheres to ISO 9001 standards, and our health, safety, and environmental systems align with ISO 14001 and ISO 28001, ensuring the delivery of high-quality products. Furthermore, GN products hold CE certificates, facilitating export to European markets.

If you need any support about the operation and maintenance of GN’s equipment like dewatering screw press and Chemical Dosing Unit, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

GN Separation Participated in SMOPYC Mining Exhibition

As a global frontrunner in solid-liquid separation technology, GN Separation proudly announces its active participation in the esteemed SMOPYC Mining Exhibition. This significant event, held at Feria Zaragoza, serves as a pivotal platform for industry leaders to showcase our avant-garde solutions and foster collaboration within the mining sector.

2023.11.22 SOMPYC-Zaragoza

Set at Hall 3, Booth C 5-7, GN Separation is poised to unveil its cutting-edge equipment, featuring the highly acclaimed Linear Vibrating Screen GNLMP1224. This state-of-the-art screening solution, meticulously designed for optimal performance, offers unparalleled efficiency in processing materials within the mining industry. Interested visitors can explore the features and benefits of this advanced technology by visiting here.

2023.11.22 Linear-dewatering-vibrating-screen

In tandem with the Linear Vibrating Screen, GN Separation will spotlight its Polyurethane Screen Panel. Engineered with precision, these panels deliver robust performance in demanding mining applications. Visitors in search of durable and efficient screening solutions are encouraged to delve into the features of the Polyurethane Screen Panel at this link.

2023.11.22 Polyurethane-screen-panel

The SMOPYC Mining Exhibition provides a unique avenue for industry professionals to engage with GN Separation’s experts, grasp the latest advancements in separation technology, and explore how these innovations can elevate operational efficiency.

“We are thrilled to participate in the SMOPYC Mining Exhibition, a distinguished platform for industry leaders to converge and exchange ideas. GN Separation remains steadfast in delivering cutting-edge solutions that redefine industry standards,” states a spokesperson for GN Separation.

The Feria Zaragoza venue, renowned for hosting premier industry events, will bear witness to GN Separation’s unwavering commitment to excellence in solid-liquid separation technology. Industry stakeholders and visitors alike are cordially invited to firsthand experience the innovative solutions offered by GN Separation at Hall 3, Booth C 5-7.

For more comprehensive information about GN Separation and its participation in the SMOPYC Mining Exhibition, please visit the official company website: