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Brand Name : Beishun
Model Number : XK-550
Certification : ISO/CE
Place of Origin : Qingdao
MOQ : 1sets
Price : Negotiable
Payment Terms : T/T,Western Union,L/C
Supply Ability : 30set/month
Delivery Time : 30day
Packaging Details : 40GP
Core Components : PLC, Bearing, Gearbox, Motor
Roller Hardness : Chilled cast iron hardness HS 72
Cooling Mode : water cooling
Reducer Brand : NGW
Rollersurface : Smooth
Roll Working Length : 1500mm
Rollercooling : Water Cooling
Friction Ratio : 1:1.22
Brakes : Hydraulic Thruster Brakes
Bearing : Self-Aligning Roller Bearing
Application : mixing rubber compound
Rollerdrive : V-Belt
Moter Power : 110kw
Roller Type : Hollow type / Drilling roll
The XK-550 Type Rubber Mixing Mill With A Production Capacity Of 100kg Per Batch,
Here's a detailed breakdown of what this system is, how it works, and its role in a rubber manufacturing plant.
This setup is a two-stage mixing process:
Stage 1: The 110L Kneader (Intermixer) - For intensive mixing, blending, and plastication.
Stage 2: The XK-550 Open Mixing Mill - For final mixing, homogenization, and sheet-down.
This is a more modern and efficient alternative to using only a large open mill for the entire mixing process, which is more labor-intensive, time-consuming, and less consistent.
Function: This is a batch-type internal mixer. It performs the initial, high-intensity work of incorporating various ingredients (polymers, fillers, oils, chemicals) into a uniform mass.
How it Works: It consists of a sealed, jacketed chamber with two counter-rotating, intermeshing rotors. The shearing and kneading action inside the closed chamber ensures thorough dispersion of carbon black, silica, oils, and other additives.
Key Features:
Capacity: 110 Liters. This volume refers to the total chamber volume. The typical "fill factor" is 0.6 to 0.75, meaning the actual batch weight of rubber compound is usually between ~65 kg and 80 kg.
Efficiency: It mixes much faster than an open mill for the initial stage, saving time and energy.
Quality: Provides superior dispersion of powders, leading to a more consistent compound.
Environment: Enclosed design contains dust and fumes, improving the working environment.
Function: This machine receives the masterbatch from the kneader for final mixing, homogenization, cooling, and forming into sheets.
How it Works: It consists of two parallel, counter-rotating rolls. The friction between the rolls (different speeds and temperatures) generates high shear stress, which further blends the compound and adjusts its viscosity.
Key Features:
Size: The "550" typically refers to the roll diameter in millimeters (550mm or ~22 inches). The roll length (e.g., 1500mm) determines the batch size capacity.
Capacity: Rated for 100 kg per batch, which is well-matched to the output of the 110L kneader (after accounting for the kneader's fill factor, multiple kneader batches might be combined on the mill for a single final batch).
Versatility: It is used for:
Dumping: Receiving the hot mass from the kneader.
Blending: Mixing different masterbatches or adding sensitive curatives (like sulfur) that cannot withstand the high heat of the kneader.
Sheeting: Forming the mixed compound into a continuous, uniform sheet of specific thickness for easy handling and feeding to the next process (e.g., calendering or extrusion).
Cooling: The large surface area of the water-cooled rolls helps bring down the compound temperature.
Weighing: All raw materials (natural/synthetic rubber, carbon black, zinc oxide, stearic acid, process oils, antioxidants, etc.) are precisely weighed according to the recipe.
Loading & Mastication: Rubber is loaded into the kneader first to soften it (mastication).
Intensive Mixing: Powders and liquids are added in a specific sequence to the kneader. The machine runs for a set time or until a target energy/temperature is reached.
Dumping: The mixed "masterbatch" is dumped from the kneader, often directly onto a conveyor that feeds the XK-550 mill.
Final Mixing on the Mill: The operator works the compound on the mill, repeatedly cutting and folding the sheet to ensure final homogenization. At this stage, curatives (sulfur, accelerators) are added.
Sheeting & Cooling: The final compound is passed through the mill rolls to form a smooth sheet. This sheet is then run through a cooling system (e.g., a cooling water bath or festoon cooler) to prevent premature vulcanization.
Storage/Feeding: The cooled sheets are stacked or cut for storage or directly fed to downstream processes like extrusion, calendering, or molding.
High Productivity: The kneader handles the slow, intensive part quickly, while the mill handles the finalizing and sheeting.
Excellent Compound Quality: Achieves good dispersion and consistency, which is critical for product performance.
Labor Optimization: Reduces the heavy manual labor required if the entire mix were done on an open mill.
Process Control: Allows for precise control over mixing temperature, time, and energy input.
| model | XK-450 | XK-550 | XK-560 |
| roller diameter | 450mm | 550mm | 560/510mm |
| roller working length | 1200mm | 1500 | 1500 |
| front roll linear speed | 24.5 | 27.94 | 27.87 |
| frictio ratio of roller | 1:1.27 | 1:1.22 | 1:1.2 |
| motor | 55 | 110 | 90 |
| Batch capacity | 25-50 | 50-60 | 50-60 |
| machine size | 5200*2380*1770 | 5900*2680*2080 | 6500*2300*2000 |
| machine weight | about 12000 kg | 27000 kg | 19500 kg |
This specific setup is commonly found in plants manufacturing:
Tire Components (tread, sidewall, inner liner)
Automotive Rubber Parts (hoses, belts, gaskets, seals)
Industrial Rubber Products (conveyor belt covers, rubber linings, rollers)
Footwear (soles)
Dense, technical rubber products requiring high-quality mixing.
In summary, the 110L Kneader + XK-550 Open Mill is a robust, industry-standard combination that provides an excellent balance of productivity, quality, and versatility for a serious rubber product manufacturing facility.
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XK-550 Type Rubber Mixing Mill with 100kg Batch Capacity and 1500mm Roll Working Length Images |