Basic Description
Support Roller for Rotary Kiln
Support Rollers For Rotary Kiln are the core load-bearing components supporting the kiln body. Their main function is to bear the entire weight of the rotary kiln, materials, and lining bricks, limit radial displacement of the cylinder, stably support the low-speed rotation of the cylinder, and control axial movement in conjunction with the thrust rollers. They operate under harsh conditions of high-temperature radiation and dense dust, continuously bearing heavy alternating stress, resulting in high frictional losses and demanding lubrication and cooling requirements. They are suitable for industries such as building materials and cement, metallurgical roasting, chemical calcination, waste and hazardous waste disposal, and lime burning. They are used in conjunction with various long-cylinder rotary calcining equipment and are a key fundamental component for ensuring stable and continuous kiln operation and extending the lifespan of the cylinder and transmission components.
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Applications
Support Rollers For Rotary Kiln are the core load-bearing support components of rotary kilns, primarily used in cement, lime, metallurgical calcination, and kaolin roasting rotary kilns. They operate under continuous high-temperature, heavy-load conditions. The kiln's own weight, the total load of materials and refractory lining are all evenly distributed among multiple sets of idler rollers, with each set bearing tens to hundreds of tons of static pressure. The calcination of materials inside the kiln generates a large amount of radiant heat, with the kiln shell surface temperature consistently reaching 200-350℃. This heat is continuously conducted to the idler rollers, accompanied by erosion from dust, kiln lining debris, and other contaminants.
Production runs 24 hours a day without interruption, with continuous low-speed rolling friction between the idler rollers and the tire, and slight axial movement of the kiln shell, creating a complex wear condition. Fluctuations in raw material levels and the formation of rings inside the kiln can cause a sudden increase in load. Rain, snow, and humid environments can also lead to bearing corrosion. Long downtime maintenance cycles necessitate that the idler rollers possess high wear resistance, high-temperature resistance, and impact resistance to stably support the concentricity of the kiln shell and ensure continuous operation of the calcination production line.
Parameters
| Parameter | Specification |
| Roller Diameter (mm) | Φ500-3500 |
| Roller Face Width (mm) | 100-2000 |
| Unit Weight (T) | 1-200 |
| Applicable Equipment | Rotary Kiln / Dryer / Rotary Cooler |
| Customization | Customization Available |
| Material | ZG55 (ZG310-570) |
| ZG42CrMo | |
| ZG35SiMn | |
| ZG50Mn | |
| ZG20SiMn | |
| 42CrMo4 / 35CrMo | |
| 34CrNiMo6 | |
| QT Series | |
| Roller Face Hardness | HB260-320 |
| Surface Roughness | Ra≤6.3 |
| Concentricity (OD vs Bore) | ≤0.2 |
| Heat Treatment | Normalizing + Tempering |
| Structure Type 结构形式 | Solid / Web-type |
| Ring Material | 42CrMo / 35CrMo / ZG42CrMo |
| Out-of-Roundness (≤3m dia.) | ≤1.5 |
| Out-of-Roundness (3-5m dia.) | ≤2.0 |
| Manufacturing Process | Casting or Forging |
| Standard 执行标准 | JB/T6402 |
| Bearing Type | Self-aligning Roller Bearing |
| Set Configuration | 2 Rollers + 2 Thrust Rollers |
| Quality Certification | ISO9001 |
| Industries | Cement, Mining, Metallurgy, Chemical |
Machining service
Support Rollers For Rotary Kiln are made from forgings, which are first forged to eliminate internal defects. After rough turning to remove excess material, they undergo quenching and tempering heat treatment to improve overall mechanical properties. The journal mating section is machined, and the roller body and shaft are then press-fitted using a hot-fitting process to ensure connection strength. After assembly, the shape is precision turned to correct the external shape, and finally, the roller surface and journal are ground, with strict control over dimensions, roundness, and surface roughness to meet the requirements for stable operation under heavy loads in the kiln.
FAQ
Q: Are you trader or factory?
Q: What kind of service can you provide?
Q: Will weld inspection and paint thickness inspection be performed?
A: Yes. We also support third-party testing.
Q: Do you support factory inspection?
A: Anytime
Q: Besides manufacturing spare parts for large machinery, what else do you produce?
A: We also manufacture large CNC machine tools and perform equipment upgrades and retrofits.
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