NEMO® BO/BS Progressing Cavity Pump with Feeding Screw - NETZSCH Pumps & Systems Pumps & Systems Career Sustainability English (India) Chinese Dutch English English (Australia) English (India) English (South East Asia) English (USA) French German Indonesian Italian Korean Polish Portuguese (Brazil) Russian Spanish Spanish (Argentina) Spanish (Colombia) Spanish (Mexico) Spanish (Peru) Thai Vietnamese NETZSCH Group Proven Excellence in mechanical engineering for over 150 years Analyzing & Testing NETZSCH devices for thermal analysis, rheology as well as fire testing devices Pumps & Systems NETZSCH Pumps is the leading industrial positive displacement pump manufacturer in India. We offer progressing cavity, rotary lobe, hose & multi screw pumps. 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This pump is also ideal for liquids with solid content, shear-sensitive, non-lubricating, thixotropic, and dilatant media across diverse industries.   The pump is designed for efficiency, reliability, and continuous operation. This progressing cavity pump features a hopper and coupling rod with a feeding screw, along with a force-feed chamber, to enhance smooth and continuous product feed into the conveying elements. This pump design is ideal and best suited for applications within wastewater treatment, food processing, chemicals, paper, and various other process industries, providing a compact and reliable solution that ensures continuous, gentle, and low-pulsation conveying of various challenging media. Individual Consulting Get a personalized offer! contact now Advantages of NEMO® BO/BS Progressing Cavity Pump Viscous Media Handling Handles highly viscous, non-free flowy media, liquids with solids particles efficiently Wide Flow and Pressure Range The Pump is available in 2 Geometries best suited for various flow pressure requirements. They ensure smooth pulsation free flow. Engineered Designs Pump designed can be adapted to meet the site restrictions and application demands, ensuring wide applicability. NEMO® BO/BS Progressing Cavity Pump Construction The NEMO® BO/BS Progressing Cavity Pump is constructed with a suction housing that is either a rectangular or quadratic feed hopper. It has a coupling rod with a gentle conveying screw and a compression chamber for improved product feeding into the pumping elements.  The BO Series features a rectangular inlet hopper for smoother flow for non-flowing liquids and BS Series features a square inlet hopper which has a more compact footprint for specific installations that need space saving designs.  The hopper dimensions can be adapted to the individual application based on the feeding or upstream equipment. The pump housing can be designed with materials in steel, chrome-nickel-steel or stainless steel and also with special materials upon request. The stator is vulcanized into the housing with sealing on both sides in a variety of elastomers . Stator inlet is designed with hopper-shaped opening for improved feed of the product into the conveying chamber . Shaft seals are standard seals with single-acting, bi-directional, and wear-resistant. Upon request, with single- or double-acting mechanical seals of varied designs and from various manufacturers, cartridge and special seals as well as packed glands are available based on the complexity of the application. The NEMO® BO/BS in block design with directly flanged drive and the other model NEMO® SO/SS with bearing housing and drive shaft are ideal for handling higher axial loads and pressures when handling highly viscous, crumbly, and solids-containing media in diverse process industries. 1 2 3 4 5 6 Pump Capabilities and Range Flow rates up to 120 m³/h at pressures up to 18 bar in its standard design. Viscosity up to 100,000 cP Temperatures up to 140 deg C Coupling rod with conveying screw and rectangular/square hopper for optimum feeding into the conveying elements. Built for speed-proportional dosing of almost all media, ensuring consistent and accurate delivery. Its block construction with a flanged drive makes it a compact and economical solution for various industrial applications. Further Advantages Conveys complex fluids: Shear-sensitive, Lubricating, and non-lubricating media, Thixotropic and dilatant media, Highly viscous and crumbly media that tend to bridge, Slowly flowing to non-free-flowing media with or without solid content can be conveyed reliably. Application-Specific Joints: Various joint options are available to ensure optimal performance for specific applications. Seal Options: Standard mechanical seals are provided, with optional seals available for specialized needs. Easy & Quick Maintenance: Designed for easy serviceability, reducing downtime and maintenance costs. Type / Performance Name Pressure max. (bar) Capacity min. (m³/h) Capacity max. (m³/h) Speed (rpm) NM015 BO/BS 12 0,01 0,7 up to 800 NM021 BO/BS 12 0,04 2 up to 800 NM031 BO/BS 12 0,1 5 up to 600 NM038 BO/BS 18 0,25 12 up to 600 NM045 BO/BS 18 0,5 20 up to 550 NM053 BO/BS 18 0,8 30 up to 550 NM063 BO/BS 18 1,4 40 up to 500 NM076 BO/BS 18 2,5 55 up to 350 NM090 BO/BS 18 3,5 80 up to 300 NM105 BO/BS 12 7,5 120 up to 250 Further sizes and technical data on request. Comprehensive Service and Support At NETZSCH, our commitment to your success extends well beyond the initial purchase of your NEMO® BO/BS Progressing Cavity Pump. We offer a complete range of aftermarket services to ensure your pump operates at peak efficiency and reliability throughout its lifecycle.  Consultation: Our experts provide tailored advice to help you select the right pump configuration and optimize your processes. Spare Parts: We maintain a full inventory of genuine spare parts to minimize downtime and ensure optimal pump performance. Maintenance: Our routine and preventative services keep your pump running smoothly and prevent unexpected breakdowns. Repair: Swift and Efficient: Our prompt repair services ensure minimal disruption and a quick return to operation. Modernization: We offer modernization services to keep your pump system up-to-date with the latest technology and performance standards. FAQs What industries can benefit from the NEMO® BO/BS Pump with Hopper? The NEMO® BO/BS Pump with Hopper is a robust, efficient, and versatile pump, serving various industries like wastewater treatment plants, effluent treatment plants, food, paper, refineries, and agro/bio/construction chemicals. Its capability to handle crumbly media makes it an optimal solution across various process industries. What types of media can the NEMO® BO/BS Pump handle? This pump is engineered to handle a wide range of challenging media, including shear-sensitive, highly viscous, crumbly, and slow-flowing substances, both with and without solid content. These could be medium-consistency paper pulp, pigment paste, ammonium nitrate slurry, fruit pulp , puree, butter, and biogas slurry to name a few. What customization options are available for the NEMO® BO/BS pump? The NEMO® BO/BS pump offers two rotor/ stator geometries and materials for different applications. It is also equipped with a standard mechanical seal , with optional seals available for specific operational preferences, ensuring enhanced flexibility and customization. The pump is also available in designs suited for food Industries in hygienic designs. Brochures NEMO® Progressing Cavity Pumps Brochure Product Range Brochure Applications NEMO® BO/BS pump with hopper Environment and Energy Industry Chemical, Pulp and Paper Industry Food & Pharmaceutical Industry Contact Us for Expert Solutions Ready to optimize your industrial processes with the efficient and reliable NEMO® BO/BS Pump with Hopper in Block Construction? Our team of experts provide personalized advice and solutions tailored to your specific needs. Your contacts and companies at NETZSCH Any specific questions? Contact us for help or fill in the contact form. form FAQ progressing cavity pumps Which applications are progressing cavity pumps suitable for? Progressing cavity pumps are particularly suitable for pumping highly viscous, abrasive, solid-laden or shear-sensitive media. Typical applications include the chemical , food , environmental , paper and building materials industries , as well as the oil and gas sector. What are the advantages of NEMO® progressing cavity pumps? NEMO® progressing cavity pumps from NETZSCH Pumps & Systems are characterised by gentle, low-pulsation pumping, high dosing accuracy and a wide range of applications . They enable a constant delivery rate even with changing pressures and media compositions. Which media can be conveyed using progressing cavity pumps? Progressing cavity pumps can be used to convey low-viscosity to highly viscous media, including slurries, suspensions, pastes, media with a high solids content, and sensitive or gas-laden liquids. Are progressing cavity pumps self-priming? Yes, progressing-cavity pumps are self-priming and exhibit excellent suction performance. This makes them ideal for applications with changing fill levels or difficult suction conditions. What designs and variants are available? NEMO® progressing cavity pumps are available in numerous designs, including block , hopper and hygienic versions. In addition, various materials, seal variants, and rotor-stator combinations are available to optimally adapt the pump to the respective application . How maintenance intensive are progressing cavity pumps? Maintenance requirements are low and predictable. Wear parts such as the rotor and stator can be easily replaced. Maintenance-friendly designs enable short downtimes and high plant availability. What is the service life of the rotor and stator? The service life depends on factors such as the medium, speed, pressure and choice of materials. Professional design and the use of original spare parts ensure a long service life and economical operation. What spare parts are available for progressing cavity pumps? All relevant original spare parts are available for progressing cavity pumps from NETZSCH Pumps & Systems, including rotors, stators , seals, joint parts and other wear-related components. The spare parts are precisely matched to the pump design and ensure high operational reliability. How do I find the right spare part for my progressing cavity pump? The correct spare part can be identified by the machine number, serial number, or item number. Spare parts lists, sectional drawings and the operating and maintenance instructions also provide support. Alternatively, the NETZSCH Pumps & Systems service team can provide expert advice on selecting the right original spare part. How to find the right progressing cavity pump? The experts at NETZSCH Pumps & Systems will assist you in the design, selection and integration of the right progressing cavity pump – tailored to your specific pumping tasks and process requirements. News from NETZSCH Pumps & Systems 13.07.2026 How to Find the Right Food Pump for Your Process 23.06.2026 Types of Pumps: Technologies, Principles and Selection Criteria all news You may also be interested in NEMO® BF Hopper Pump NEMO® BF Hopper aBP-Module Pump NEMO® BO/SO Hopper Pump About netzsch Glossary Press Contact Proven Excellence Sustainability Star Pump Alliance Media Brochures Certificates Videos Legal Code of Conduct Imprint Privacy Policy Contact Find your local contact Newsletter Ask the AI AI Overview An error occurred. Please try again. AI-Assistant AI-Assistant AI-drafted. No NETZSCH commitment or warranty—contact for guidance.