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.
A Cross Cylindrical Roller Slewing Bearing is a heavy-duty, high-precision slewing bearing. Its rollers are evenly arranged between the raceways of the inner and outer rings in a 90° crossed pattern. The inner or outer ring can be integrated with an internal/external gear structure, and it can simultaneously bear axial loads, radial loads, and ultra-large overturning moments. It is a core transmission component of the slewing bearing drive system in heavy-duty equipment. As an experienced slewing bearing manufacturer, NEWBEE Transmission's Cross Cylindrical Roller Slewing Bearings, relying on the "roller-raceway" line contact design, have a 40% higher rigidity than double-row ball slewing bearings under the same volume. Moreover, by optimizing the slewing bearing seal structure, they are suitable for harsh working conditions such as dust and humidity. As a high-quality representative in the slewing bearing China manufacturing field, they are widely used in heavy machinery fields with strict requirements for heavy-load stability and rotational accuracy.
1. Superior Composite Load-Bearing Capacity: The crossed roller layout of Cross Cylindrical Roller Slewing Bearings can simultaneously bear axial loads (up to 25,000kN), radial loads (up to 15,000kN), and overturning moments (up to 100,000kN·m). A single set of bearings can replace the combination of multiple ordinary bearings, greatly simplifying the structure of the slewing bearing drive system. As a professional slewing bearing manufacturer, NEWBEE Transmission increases the rated dynamic load of the product by an additional 15% by adjusting the roller diameter and arrangement density.
2. Extreme Structural Rigidity: Made of 42CrMo or 50Mn alloy structural steel through integral forging, Cross Cylindrical Roller Slewing Bearings undergo integral quenching (raceway hardness HRC 55-62) and precision grinding treatment, with their deformation resistance 30% higher than that of ordinary cast steel bearings. The rollers are made of GCr15 high-carbon chromium steel, which has excellent wear resistance, ensuring no local stress concentration during the slewing bearing drive process.
3. High-Precision Rotational Performance: The rotational accuracy of Cross Cylindrical Roller Slewing Bearings reaches Grade P5, with radial runout ≤ 0.005mm, and the backlash of the slewing bearing drive is controlled within 0.1-0.2mm, making them suitable for high-precision servo drive systems. Thanks to NEWBEE Transmission’s precision machining process, the raceway tolerance is controlled at the micrometer level, ensuring no jamming and low vibration during the slewing bearing drive process.
4. Reliable Sealing Protection: Cross Cylindrical Roller Slewing Bearings adopt an innovative combined slewing bearing seal design of "multi-layer lip seal + labyrinth dust cover", with a protection level of IP65, which can resist erosion from dust, muddy water, and salt spray. As a leading enterprise in slewing bearing China, NEWBEE Transmission can also customize fluororubber slewing bearing seals according to requirements, suitable for extreme temperature environments ranging from -40℃ to 120℃.
5.Modularity and Customization: Cross Cylindrical Roller Slewing Bearings support multiple structures such as toothless, internal gear, and external gear (module 2-10mm). The inner and outer rings can integrate sensor mounting holes (used to monitor the speed and temperature of the slewing bearing drive). As an experienced slewing bearing manufacturer, NEWBEE Transmission can provide customized solutions for non-standard sizes (outer diameter 300-6,000mm), special lubrication channels, or anti-corrosion coatings.
With the advantages of crossed load-bearing and stable transmission, combined with the weather resistance of the slewing bearing seal, Cross Cylindrical Roller Slewing Bearings are widely used in the following fields:
Construction Machinery: Turntables of tower cranes and upper body rotating mechanisms of crawler excavators. The high rigidity of Cross Cylindrical Roller Slewing Bearings ensures no deviation of the slewing bearing drive during heavy-load hoisting, and the slewing bearing seal resists construction site dust and muddy water.
Port Machinery: Rotating platforms of container quay cranes and slewing mechanisms of stackers and reclaimers. Cross Cylindrical Roller Slewing Bearings can bear instantaneous impact loads, and the high precision of the slewing bearing drive ensures accurate container positioning, which is a typical application of slewing bearing China in the port field.
New Energy and Heavy Industry: Yaw systems of wind turbines and rotating frames of rolling mills in steel plants. NEWBEE Transmission’s Cross Cylindrical Roller Slewing Bearings enhance the slewing bearing seal to prevent sand and dust, adapting to outdoor and high-temperature working conditions and ensuring continuous operation of the slewing bearing drive.
Military and Precision Equipment: Radar antenna bases and equatorial mounts of large astronomical telescopes. The low-vibration slewing bearing drive of Cross Cylindrical Roller Slewing Bearings ensures precise observation, and the anti-pollution design of the slewing bearing seal meets the requirements of harsh environments.
Mining Machinery: Slewing platforms of mining excavators and rotating mechanisms of crushing equipment. The high wear resistance of Cross Cylindrical Roller Slewing Bearings and the dust-proof performance of the slewing bearing seal adapt to high-dust and high-impact working conditions in mines.
The price of Cross Cylindrical Roller Slewing Bearings is affected by the following factors. As a leading enterprise in slewing bearing China, NEWBEE Transmission can provide cost-effective solutions:
1. Materials and Processes: The price of Cross Cylindrical Roller Slewing Bearings made of 42CrMo forged steel is 25%-35% higher than that of 50Mn steel. Products using vacuum degassing process to reduce internal defects have an additional 15% price increase, which are especially suitable for scenarios with high requirements for the stability of the slewing bearing drive.
2. Precision Grade: Cross Cylindrical Roller Slewing Bearings of Grade P5 have a 20%-30% higher price than those of Grade P6 due to the high meshing accuracy of the slewing bearing drive, making them suitable for precision equipment such as radars and astronomical telescopes.
3. Specification and Size: The price of Cross Cylindrical Roller Slewing Bearings with an outer diameter of 1-3m is relatively low. For products with an outer diameter >5m or thickness >300mm, due to the limitations of processing equipment, the price increases stepwise with the size. Large-scale production by slewing bearing manufacturers can reduce costs.
4. Customization Requirements: Cross Cylindrical Roller Slewing Bearings with IP66-class slewing bearing seals, slewing bearing drives integrated with encoders, or hard chrome anti-corrosion coatings have a price increase of 25%-40%. For specific quotations, you can contact NEWBEE Transmission to obtain factory-direct supply solutions from slewing bearing China.
1. Load Matching: Select Cross Cylindrical Roller Slewing Bearings with corresponding rated loads according to the actual axial/radial loads and overturning moments of the equipment. As a professional slewing bearing manufacturer, NEWBEE Transmission can provide slewing bearing drive load calculation software to assist in selection.
2. Precision Requirements: For high-precision scenarios (such as radar antennas), choose Cross Cylindrical Roller Slewing Bearings of Grade P5 to ensure no deviation of the slewing bearing drive; for general industrial scenarios, Grade P6 is sufficient to meet the needs.
3. Environmental Adaptation: For humid/marine environments, priority should be given to products with stainless steel slewing bearing seals; for high-temperature scenarios, customized Cross Cylindrical Roller Slewing Bearings with high-temperature tempering treatment are required. As a technology leader in slewing bearing China, NEWBEE Transmission can provide full-scenario adaptation solutions.
4. Supplier Qualifications: Choose slewing bearing manufacturers like NEWBEE Transmission that have full-process capabilities including forging, heat treatment, and precision machining. They should provide material inspection reports and slewing bearing drive performance test data to ensure product reliability.
5.Price Rationality: Compare quotations from different slewing bearing manufacturers. The factory-direct supply model of slewing bearing China (such as NEWBEE Transmission) can reduce intermediate links and lower procurement costs by 10%-15%.
NEWBEE Transmission is a leading slewing bearing manufacturer in China and a benchmark enterprise in slewing bearing China, with more than 20 years of experience in the Cross Cylindrical Roller Slewing Bearing field. Its products cover outer diameters from 300mm to 6,000mm, support multiple structures such as toothless, internal gear, and external gear, and can customize special slewing bearing seals (such as fluororubber, metal dust covers) and slewing bearing drive gear rings (module 2-10mm). Relying on 2000-ton forging equipment, imported German CNC grinders, and ISO 9001/13485 quality systems, NEWBEE Transmission’s Cross Cylindrical Roller Slewing Bearings have passed 100% non-destructive testing (UT/MT). The accuracy of the slewing bearing drive and the protection performance of the slewing bearing seal meet international standards, and they are widely used in construction machinery, ports, wind power, and other fields. As an export-oriented enterprise in slewing bearing China, its products are sold to Europe, America, Southeast Asia, and are well recognized by customers. For detailed parameters of Cross Cylindrical Roller Slewing Bearings or slewing bearing drive test reports, you can contact the technical team directly.
1. When installing Cross Cylindrical Roller Slewing Bearings, bolts should be tightened evenly in a diagonal order (the preload is 70% of the bolt yield strength) to avoid excessive local stress affecting the accuracy of the slewing bearing drive. It is recommended to use special installation tools provided by NEWBEE Transmission.
2. Before the first operation, inject special extreme-pressure grease (the filling amount is 1/3 of the internal space) and replenish it every 500-800 hours of operation; in harsh environments, the interval should be shortened to 300 hours. At the same time, check whether the slewing bearing seal is intact to prevent grease leakage.
3. Regularly check the gear ring meshing gap (normal value 0.1-0.2mm) of the slewing bearing drive and the sealing performance of the slewing bearing seal. If abnormal noise, oil leakage, or excessive gap is found, stop the machine immediately for inspection to avoid raceway damage.
For the latest price of Cross Cylindrical Roller Slewing Bearings, customized solutions for slewing bearing drives, or technical information about slewing bearing seals, please contact NEWBEE Transmission, a high-quality supplier of slewing bearing China:
Email: paul@newbeetrans.com
Official Website: www.newbeetrans.com
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sales@newbeetrans.com
+8615090185276