Product Parameter Table
| Appellation | Unit | HLMJD-12C | HLMJD-16C | HLMJD-18C | HLMJD-20C |
| No.of head | No. | 12 | 16 | 18 | 20 |
| Useful working width | mm | 600-2100 | 600-2100 | 600-2100 | 600-2100 |
| Useful working thickness | mm | 12-50 | 12-50 | 12-50 | 12-50 |
| Belt advancement speed | mm/min | 0-2500 | 0-2500 | 0-2800 | 0-3200 |
| Spindle motor power | kw | 9/11/15 | 9/11/15 | 9/11/15 | 9/11/15 |
| Total power | kw | 121/145/193 | 158/190/254 | 176/212/284 | 194/234/314 |
| Water consumption | m3/h | 22 | 25 | 26 | 28 |
| Overall dimensions (L*W*H) | mm | 9600*3200*2300 | 11600*3200*2300 | 12600*3200*2300 | 13600*3200*2300 |
| Weight | T | 24 | 27 | 28 | 29 |
The HLMJD series Grinding and polishing granite machine is a professional marble granite polishing machine, engineered for high-precision continuous grinding and polishing of granite and marble slabs. It is also a versatile Polishing machine for granite slab and a dedicated marble granite slab polishing machine for bulk stone processing.
Product Advantages
The Grinding and polishing granite machine offers four models: HLMJD-12C, HLMJD-16C, HLMJD-18C, HLMJD-20C, with 12, 16, 18, 20 heads respectively. All marble granite polishing machine variants feature 600-2100mm useful working width and 12-50mm useful working thickness, perfectly suiting granite, marble and other hard stone slabs.
Belt advancement speed ranges from 0-2500mm/min (12C/16C) to 0-3200mm/min (20C), the Polishing machine for granite slab enables flexible speed adjustment for different materials. Spindle motors (9/11/15kw) and total power 121-314kw ensure robust power for continuous operation, while water consumption of 22-28m³/h supports efficient cooling.
The machine features large overall dimensions (9600×3200×2300mm to 13600×3200×2300mm) and heavy weight (24-29T), ensuring stability during high-intensity grinding.
This machine adopts foreign advanced design and automatic CONrMng systems, combirwg with the demand of domestic market It has the advantage of stable performance, high output and low failure rate. The machine select standard CaSung iron, steel, the brand etectronc appliances, bearing and other components from Germany. Japan and Tawan.
The controling system of the machine adopts PLC terminal controlling, and sets the parameter by the LCD touch-screen as the ma∩∙mach⅛ne interface. During running, this equipment has designed the indicator ol EIUfe and the alarm system of abrasive raw consumption.This machine is designed for grinding and polishing large slabs of marble and granite.
The COnveylng beer advancing speed and the cross beam moving speed are controlled by Uansducers The pressure o1 disc and the grinding width can be adjustable freely VWlhIn the setting area. Tħe machine can aut<xnat∣calty identity the shape of plates. Every disc (grinder) can automaticaHy lite up and down according to the identified shape of plate and tracks recircls the grinding of pates at the same time.
This Model can choose six claws flicked grinder or marbte disc. The whole machine are produced by standardized production. It's performance reaches the domestic advanced level.
Company Advantages
Founded in 2003, Fujian Nan'an Henglong Machinery Co., Ltd. has devoted nearly 20 years to the stone machinery industry. With profound industry accumulation, it has developed a mature operation capability integrating R&D and design, sophisticated production and global sales, making it a well-established professional stone machinery manufacturer in the industry.
Boasting a strong production base covering an area of over 20,000 square meters, the company is equipped with more than 10 high-standard modern production lines. Relying on standardized production management and advanced manufacturing equipment, it achieves an efficient annual output of more than 600 complete sets of complete equipment. Its robust and stable production capacity not only ensures on-time delivery of various orders accurately, but also easily undertakes large-volume customized production demands, completely solving customers' worries about order delivery.
In terms of technical R&D and quality control, the company has set up a core team composed of more than 10 senior professional R&D engineers. Centering on technological innovation, the team focuses on product performance optimization, intelligent upgrading and process innovation, continuously creating high-quality stone machinery products that adapt to market demands. Strict quality control runs through the entire production process. Many of its products have successfully passed a number of international authoritative certifications such as CE certification, ISO9001 Quality Management System Certification and ISO14001 Environmental Management System Certification, with product quality and environmental protection standards reaching international advanced levels.
The company's products are widely used in various stone processing scenarios such as marble and granite, thanks to their excellent stability and practicability, and are highly recognized by the market. Domestically, it has established long-term and stable strategic cooperative relations with many well-known domestic stone enterprises and foreign trade service providers; internationally, its products are exported to more than 20 countries and regions including Russia, India, Egypt, Kazakhstan, Saudi Arabia, Vietnam and South Korea. With reliable quality and excellent service, it has established a good brand reputation in the global stone machinery market.
All along, the company has always adhered to the business philosophy of "Quality First, Customer Supreme". Guided by customer needs, it has built a full-chain integrated service system covering R&D and customization, production and manufacturing, on-site installation and after-sales maintenance. It is committed to providing efficient, professional and considerate one-stop solutions for global customers, continuously creating long-term value for customers, and seeking win-win development with partners at home and abroad.
Quality Control
Quality is the key factor in delivery. Henglong Machinery pledges quality in every part and step of an assembly. We keep to a tight end-to-end quality control system from procurement to machining, assembly, and testing. Every machine undergoes a thorough performance check prior to shipping. We are convinced that high standards are not only our obligation to the product but also to our customers' operations. Henglong machines are very strong and reliable. But they are so easy to set up and maintain that it is almost impossible for your production schedule to be interrupted by unexpected downtime.
Pre-sales and After-sales Service
Service is about making cooperation simple. Henglong Machinery has developed a responsive and professional servicenetwork with a worldwide presence. Our team provides support throughoutthe entire process including production planning, equipment selection, on-site installation, operator training, and spare parts support. We are alwaysready to solve problems quickly for the most efficient use of yourinvestment. Working with Henglong Machinery is like having a dependable,effective, and straightforward partner for the long run.
FAQ
Q1. What is the efficiency and output capacity of the equipment?
The HLMJD series can accelerate a conveyor belt up to a speed of 3200mm/min, with an effective yield of 60–80㎡ per hour for slabs with thickness 12–50mm. Its 121–314kW total power enables high-intensity continuous operation which is stable, thus production efficiency is hugely raised.
Q2. Can the equipment process both marble and granite? What is the processing effect?
The HLMJD series is capable of polishing marble and granite using the same equipment. The use of high-quality imported components guarantees a high degree of precision and shiny, uniformly polished surface, so that the quality requirement of using decoration and countertops at a level of excellence is fully satisfied.
Q3. Can the equipment adapt to grid voltages in different countries? Is customization supported?
Through OEM/ODM, Henglong Machinery can offer full customization, including changing the electrical system from standard 380V/50Hz to 480V/60Hz and other voltages, also the working width, spindle motor power and other parameters of the Polishing machine for granite slab can be customized to fit your production environment perfectly.
Q4. What is the production lead time and delivery schedule?
Usually, the production lead time for standard equipment is 30 working days after receiving the advance payment. Tailored equipment production time is approximately 30-45 working days as final technical arrangements may determine the actual time.
Q5. What transportation methods are supported?
We support sea and land transportation, and can arrange FOB and other terms according to customer needs.
Q6. What payment methods are available?
We support T/T, L/C, Western Union, etc. Normally, 30% deposit in advance, and 70% balance paid before shipment.
Q7. Do you support product customization?
Yes. We provide OEM & ODM customization services, including appearance, function, voltage, language, configuration and special working condition requirements.
Authoritative Certification


Every Henglong stone machinery has passed the testing of SGS andobtained CE, ISO and other relevant international certificates. Supported byauthoritative third-party certification, we promise the equipmentperformance, safety and durability. Our products are popular in the MiddleEast, Europe, America and other overseas markets, earning the trust ofcustomers worldwide.
Yes, we export stone machinery worldwide. We can customize voltage, plugs and conform to different country standards. We also provide customized machines and complete production lines based on your workshop size and capacity requirements.
Yes, our cutting, polishing, edge cutting and profiling machines are specially designed for marble, granite, artificial stone and other hard/soft stones. Parameters can be adjusted according to material hardness to ensure stable processing performance
Our standard models can process stone slabs with a width of 600–1200mm and a length up to 3200mm or more. Customized models are available for larger marble and granite slabs.
Our automatic polishing machine can reach a glossiness of 85–95 gloss units on marble and granite. The standard model processes about 30–60 square meters per hour with consistent and stable finish.