NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
The RMWR Series Rolling Mill Working Roll Bearing is a high-precision, high-load-carrying rolling bearing specifically designed for work rolls of rolling mills. It adopts a four-row tapered roller structure, with rings and rollers made of ultra-clean bearing steel (AISI 52100 or equivalent materials). After precision grinding, the raceway hardness reaches HRC 60-62, enabling it to efficiently bear radial and axial loads during the operation of rolling mills. Meanwhile, it possesses excellent impact resistance and high-speed stability, serving as a core transmission component for steel and non-ferrous metal rolling equipment.
As a professional roller mill manufacturer and a leading enterprise in the rolling mill bearings field, NEWBEE Transmission’s RMWR Series Rolling Mill Working Roll Bearing, relying on the optimized layout of four-row rollers and precision grinding technology, has a service life 30% longer than ordinary rolling mill bearings under the same working conditions. It is also suitable for multiple scenarios of hot and cold rolling mills, fully reflecting the ultimate pursuit of roller mill manufacturers for the performance of steel mill bearings.
1. Superior Precision Performance: The RMWR Series Rolling Mill Working Roll Bearing has a radial runout ≤ 0.005mm. Its precision-ground raceways reduce vibration and noise, ensuring stable rolling of the rolling mill’s work rolls, and it is suitable for scenarios requiring high precision such as precision strips and foils. As an experienced roller mill manufacturer, NEWBEE Transmission controls the raceway tolerance at the micron level by virtue of imported precision grinding equipment, making this bearing stand out in the field of steel mill bearings and become the preferred accessory for high-precision rolling mills.
2. Significantly Reduced Downtime: Compared with standard rolling mill bearings, the regrinding interval of the RMWR Series Rolling Mill Working Roll Bearing is extended by 50%, which can reduce the number of shutdowns caused by bearing maintenance in rolling mills. Its split inner ring design allows quick replacement of bearing components without the need to disassemble the entire work roll, further shortening the maintenance cycle. This advantage is a core innovation of NEWBEE Transmission to meet the "cost reduction and efficiency improvement" needs of steel mill bearings users, and also a key factor for roller mill manufacturers to enhance product competitiveness.
3. Strong Environmental Adaptability and Customizability: This bearing supports customization of stainless steel materials, making it suitable for corrosive environments such as non-ferrous metal rolling. For high-temperature hot rolling scenarios, NEWBEE Transmission can provide heat-resistant grease (suitable for working conditions of ≤200℃) to ensure the stable operation of rolling mill bearings in harsh environments. In addition, the cage can be optional machined brass (suitable for high-speed scenarios to improve stability) or polyamide (reduces friction, suitable for medium and low-speed working conditions), fully demonstrating the scenario-specific service capabilities of roller mill manufacturers.
4. Efficient and Energy-Saving Characteristics: The RMWR Series Rolling Mill Working Roll Bearing adopts a low-friction design. By optimizing the contact area between the roller end face and the ring, it reduces power loss during operation, with a 15% lower power consumption compared to ordinary steel mill bearings. This feature not only conforms to the development trend of "energy conservation and consumption reduction" for modern rolling mills but also enables NEWBEE Transmission’s rolling mill bearings to have higher cost-effectiveness in the market.
5. High Load-Carrying Capacity and Impact Resistance: The four-row tapered roller structure distributes the load evenly among the rollers, with a maximum rated dynamic load of up to 8000kN (e.g., model RMWR-600), which can bear the instantaneous impact load during the operation of the rolling mill. The reinforced cage structure can prevent roller deflection under impact, further improving the anti-failure capability of the bearing. As a benchmark product of roller mill manufacturers, this bearing perfectly meets the dual requirements of steel mill bearings for "heavy load + impact resistance".
As core rolling mill bearings, the RMWR Series Rolling Mill Working Roll Bearing, with its advantages of high precision and high load-carrying capacity, is widely recommended by roller mill manufacturers for the following rolling scenarios and is also a key category of steel mill bearings:
Hot Rolling Mill Field: Suitable for work rolls of hot continuous rolling production lines for steel strips, steel plates, and steel bars. It can withstand high-temperature working conditions of ≤200℃. Combined with the heat-resistant grease provided by NEWBEE Transmission, it can effectively resist high-temperature oxidation and scale contamination during hot rolling. In this scenario, the RMWR bearing, as the core of steel mill bearings, ensures the continuous and stable operation of the hot continuous rolling mill under high load and reduces production interruptions caused by bearing failures.
Cold Rolling Mill Field: Used for work rolls of cold rolling mills for precision steel strips and foils. Its radial runout of ≤0.005mm ensures the thickness uniformity and surface finish of cold-rolled products. In cold rolling scenarios, the RMWR Series Rolling Mill Working Roll Bearing from NEWBEE Transmission can further improve the qualification rate of products compared with ordinary rolling mill bearings, and has become the standard steel mill bearings for high-end cold rolling equipment.
Tandem Rolling Mill Field: Suitable for multi-stand tandem rolling production lines (e.g., automotive sheet tandem rolling, silicon steel tandem rolling). The high rigidity of the four-row tapered roller structure can simultaneously bear the composite load transmitted by multiple stands, ensuring the speed synchronization of the work rolls of each stand. As a preferred supporting product of roller mill manufacturers, this bearing helps tandem rolling mills achieve the rolling goal of "high speed, high efficiency, and high precision".
Special Rolling Mill Field: Used for work rolls of special rolling mills for rolling non-ferrous metals such as copper, aluminum, and titanium. Customized stainless steel materials can resist corrosive media during non-ferrous metal rolling, and the low-friction cage design is suitable for the "low-damage rolling" requirement of soft non-ferrous metal materials. The RMWR bearing optimized by NEWBEE Transmission for this scenario expands the application boundary of rolling mill bearings and has become a trusted choice in the special rolling mill field.
The price of the RMWR Series Rolling Mill Working Roll Bearing is affected by multiple factors. As a professional roller mill manufacturer, NEWBEE Transmission can provide a transparent quotation plan to help users accurately control the procurement cost of steel mill bearings:
1. Material Selection: The price of RMWR bearings made of standard ultra-clean bearing steel (AISI 52100) is 18%-22% higher than that of ordinary bearing steel products. This is because AISI 52100 has higher hardness and better fatigue resistance after quenching, making it suitable for heavy-load and high-frequency working conditions of steel mill bearings. If customized stainless steel materials (e.g., 440C) are used, the price will increase by another 25%-30%, which is suitable for non-ferrous metal rolling scenarios with corrosion. When the cage is made of machined brass, the price is 10%-15% higher than that of polyamide cages, as brass is more suitable for high-speed rolling mill requirements.
2.Precision Grade: Due to the strict raceway grinding precision requirements (tolerance ≤ 0.003mm), the price of P4-grade RMWR Series Rolling Mill Working Roll Bearings is 20%-25% higher than that of P5-grade ones, which is suitable for ultra-high-precision scenarios such as cold-rolled precision strips and foils. For ordinary hot rolling or steel bar rolling scenarios, P5-grade bearings are sufficient to meet the requirements with higher cost-effectiveness. This is a common strategy used by NEWBEE Transmission, as a roller mill manufacturer, to match the needs of different rolling mill bearings users.
3. Specification and Size: The price of small and medium-sized RMWR bearings with an inner diameter of 80-300mm (e.g., RMWR-200 with an inner diameter of 200mm) is relatively affordable. For large-sized products with an inner diameter > 500mm or an outer diameter > 1000mm (e.g., RMWR-600 with an inner diameter of 600mm), the price increases stepwise with the size due to the need for large-scale precision grinding equipment, with an increase rate of up to 40%-60%. As a large-scale roller mill manufacturer, NEWBEE Transmission can reduce the unit cost of some large steel mill bearings through mass production.
4. Customization Requirements: The price of products requiring additional configuration of IP65 protection level seals (to resist water and scale contamination in rolling mills), high-temperature grease (-30℃~200℃), or surface anti-corrosion coatings will increase by 15%-20%. For special rolling mill work roll sizes (non-standard inner/outer diameters), the price will increase by 20%-25% due to the need for re-designing tooling. For specific quotations, you can contact NEWBEE Transmission to obtain exclusive rolling mill bearings solutions.
1. Precise Size Matching: The RMWR Series Rolling Mill Working Roll Bearing has an inner diameter range of 80-800mm, outer diameter range of 150-1200mm, and width range of 50-300mm. When purchasing, it is necessary to accurately measure the inner diameter (d), outer diameter (D), and width (B) of the installation position of the rolling mill’s work roll to avoid bearing jamming caused by size deviation. As a roller mill manufacturer, NEWBEE Transmission provides a full range of standard models (e.g., RMWR-200, RMWR-400, RMWR-600) and non-standard customization services to ensure that rolling mill bearings perfectly match work rolls of different specifications.
2.Precision Grade Adaptation: For ultra-high-precision rolling scenarios (e.g., cold-rolled foils, silicon steel), P4-grade RMWR bearings should be selected to ensure the dimensional accuracy of rolled products; for ordinary hot rolling (e.g., steel strips, steel bars) or scenarios with low precision requirements, P5-grade bearings are sufficient to balance performance and cost. NEWBEE Transmission can provide precision inspection reports, and as a roller mill manufacturer, it strictly controls the quality of steel mill bearings to ensure the precision consistency of each product.
3.Working Condition Adaptation: For hot rolling mills (≤200℃), RMWR bearings with heat-resistant grease should be selected, and the seal should be checked for adaptation to high-temperature environments; for cold rolling mills involving corrosive cooling media, customized stainless steel materials or enhanced seals are recommended; for non-ferrous metal rolling mills, low-friction cages (polyamide) should be preferred to reduce surface scratches on rolled materials. As a professional roller mill manufacturer, NEWBEE Transmission can optimize the configuration of rolling mill bearings according to their actual working conditions.
4.Supplier Qualification Screening: It is advisable to choose roller mill manufacturers like NEWBEE Transmission that have a complete production chain (from material smelting to finished product inspection). Such manufacturers can provide material inspection reports, load test data, and after-sales technical support to avoid purchasing inferior steel mill bearings. As a benchmark enterprise in the rolling mill bearings field, NEWBEE Transmission has passed the ISO 9001 quality system certification, and each RMWR bearing undergoes 100% load testing and seal performance testing.
5. Price Rationality Evaluation: When comparing quotations from different roller mill manufacturers, attention should be paid to the "performance-price ratio" rather than simply pursuing low prices. Relying on large-scale production and imported precision equipment, NEWBEE Transmission can reduce the unit cost while ensuring the quality of the RMWR Series Rolling Mill Working Roll Bearing, and at the same time provide long-term technical support (e.g., installation guidance, maintenance training) to avoid additional losses caused by rolling mill bearings failures in the later stage.
NEWBEE Transmission is a professional manufacturer of the RMWR Series Rolling Mill Working Roll Bearing. As an experienced roller mill manufacturer and a technologically leading enterprise in the rolling mill bearings field, it has been deeply engaged in the steel mill bearings field for more than ten years. Its products cover the full specification range of inner diameters from 80-800mm and outer diameters from 150-1200mm, including standard models such as RMWR-200, RMWR-400, and RMWR-600. It can customize rolling mill bearings with non-standard sizes, stainless steel materials, or enhanced seal structures according to customer needs. Relying on imported German precision grinding equipment and fully automated assembly lines, the raceway tolerance of NEWBEE Transmission’s RMWR Series Rolling Mill Working Roll Bearing is controlled at ±0.002mm, and the roller end face processing precision reaches the industry’s top level. Combined with a strict quality control system, each bearing undergoes dynamic load testing (to ensure the rated dynamic load meets the standard), seal testing (IP65 protection verification), and vibration testing (to ensure stable operation), perfectly meeting the high reliability requirements of steel mill bearings. In addition, NEWBEE Transmission has recently achieved a technological breakthrough in spring-preloaded rolling mill bearings, further improving the impact resistance and service life of rolling mill bearings and consolidating its technical advantages as a roller mill manufacturer. At present, the RMWR Series Rolling Mill Working Roll Bearing of NEWBEE Transmission has been widely used in hot rolling mills, cold rolling mills, and special rolling mills of large global steel enterprises, becoming a trusted steel mill bearings supplier for customers. For detailed parameters (e.g., dynamic load, maximum speed), customization plans, or technical materials of RMWR bearings, you can contact the technical team of NEWBEE Transmission directly.
1. Standard Installation Operation: When installing the RMWR Series Rolling Mill Working Roll Bearing, it is necessary to ensure that the coaxiality deviation between the work roll and the bearing is ≤ 0.05mm to avoid local wear of the raceway caused by deflection; when installing the split inner ring, the preload should be adjusted evenly through bolts, and the torque value must comply with the requirements in the product manual (e.g., the recommended torque for M30 bolts is 250-280N·m); knocking on the rings or rollers is strictly prohibited, and it is recommended to use special installation tools to prevent damage to rolling mill bearings components. These standards are the core installation guidelines provided by NEWBEE Transmission as a roller mill manufacturer to users.
2. Scientific Lubrication Management: Select the lubrication method according to the rolling mill’s working conditions: grease lubrication is recommended for medium and low-speed rolling mills (≤800rpm), with replenishment every 300-500 operating hours, and the filling amount is 1/2-2/3 of the internal space of the bearing; oil mist lubrication is required for high-speed rolling mills (>800rpm), and real-time monitoring of lubricating oil flow is necessary to ensure continuous lubrication; special heat-resistant grease should be used for hot rolling mills (≤200℃) to avoid failure of ordinary grease at high temperatures. Improper lubrication (too much or too little) is the main cause of premature failure of steel mill bearings, so it is necessary to strictly follow the lubrication recommendations of NEWBEE Transmission.
3. Regular Inspection and Maintenance: During daily operation, it is necessary to regularly monitor the bearing temperature (normal working condition ≤ 80℃, hot rolling working condition ≤ 120℃) and vibration value. If the temperature rises suddenly or abnormal noise occurs, the machine should be shut down immediately for inspection; the integrity of the bearing seal should be checked every 1000 operating hours. If the seal lip is damaged or scale/water invades, the seal should be replaced in a timely manner and internal impurities should be cleaned; when the bearing has operated to 80% of its recommended service life, preventive testing is recommended to avoid sudden failures of rolling mill bearings affecting rolling mill production. These maintenance measures are key to extending the service life of RMWR bearings and are also value-added services provided by NEWBEE Transmission as a roller mill manufacturer.
For the latest price, customization plans, or technical materials of the RMWR Series Rolling Mill Working Roll Bearing, please contact NEWBEE Transmission:
Email: paul@newbeetrans.com
Official Website: www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276