

Add to Cart
Small Ex-Factory Price Rubber Mixing Mill With Roller Diameter Of 300mm For Small Batch Production Factory
Machine Introduction:
300mm (12 inches) diameter roller rubber mill is a common rubber processing equipment. The following is a detailed introduction for you:
1. Working principle:
The main working parts are two hollow rollers rotating inward in
opposite directions. Usually the rear roller is fixed, and the
front roller can be moved back and forth horizontally manually or
electrically to adjust the roller distance. The raw rubber or
rubber compound is rolled into the gap between the two rollers as
the rollers rotate, and is subjected to strong shearing, thereby
achieving plasticization or mixing.
2. Structural composition:
- Roller: Generally made of alloy chilled cast iron, with high working
surface hardness and wear resistance, and a diameter of 300mm. The
roller is hollow and can be passed with cold water or steam to
adjust the roller temperature and control the temperature of the
rubber compound.
- Transmission system: It consists of a motor, a reducer, gears, etc., which is
responsible for driving the rollers to rotate relative to each
other at different speeds. The common front and rear roller speed
ratio is about 1:1.27.
- Spacing device: used to adjust the distance between the two rollers to meet the
processing requirements of rubber products of different
thicknesses. The roller spacing adjustment range is usually
determined according to the specific machine model, for example, it
may be adjustable between 0.1-10mm.
- Safety devices: such as emergency stop buttons, safety pull rods, etc., can
quickly stop the equipment in an emergency to ensure the safety of
operators.
3.Technical parameters:
- Roller working length: Common specifications include 600mm, 750mm, etc., which affect
the amount of rubber that can be processed at one time.
- Line speed: The line speed of the front roller is generally between
10-20m/min, for example, it may be 15.1m/min, and the line speed of
the rear roller is determined according to the speed ratio.
- One-time feeding amount: about 15-30kg, depending on factors such as roller size and
roller spacing.
- Driving motor power: usually between 15-30kW, such as 22kW, to provide power for
equipment operation.
4. Performance characteristics:
- Good plasticizing effect: It can effectively plasticize rubber,
break the rubber molecular chain, reduce the Mooney viscosity of
rubber, and improve its plasticity.
- Uniform mixing: Through the relative rotation and shearing action
of the two rollers, various rubber compounding agents can be evenly
mixed into the rubber to ensure the uniformity of the performance
of rubber products.
- Flexible operation: The operator can adjust the roller distance
in real time through the distance adjustment device according to
actual needs to control the thickness and processing technology of
rubber products.
- Wide range of applications: It is suitable for the production of
a variety of rubber products, such as plasticizing, mixing, and
sheeting of raw rubber, mixing and sheeting of rubber compounds,
and removal of impurities in rubber compounds.
- Application areas: It is widely used in rubber product
manufacturers, such as tire factories, rubber seal factories,
rubber hose factories, etc., for the early processing of various
rubber products.
Technical Parameters:
Model | XK-660 | XK-550B | XK-450 | XK-400 | XK-250 |
(D/L) Roll Size | 660×2130 | 550×1530 | 450×1200 | 400×1000 | 250×620 |
Production | 160~170Kg/once | 50~60Kg/once | 30~50Kg/once | 25~35Kg/once | 10~15Kg/once |
Motor Power(KW) | 220KW | 90/110KW | 55KW | 45/37KW | 18.5KW |
Line Speed(M/Min) | 34.2M | 28.6M | 21.8M | 19.3M | 15.5M |
Front Roll RPM | 16.5 | 16 | 15.4 | 15.4 | 19.8 |
Gear Ration | 47/ Dual Output | 47.5/Dual Output | 50 | 50 | 50 |
Roll Radio | 1: 1.24 | 1: 1.22 | 1: 1.27 | 1: 1.27 | 1: 1.10 |
Weight KG | 49800 | 18500/25000 | 11800 | 7500 | 3300 |
Temp. Control | Steam/Cool water | ||||
Emergency Stop | 2 foot step on 4 sets of press buttons | ||||
Container Volume | 55.5m³ | 23m³ | 16m³ | 12m³ | 10m³ |
Dimension(L*W*H)mm | 6200×3350×2670 | 5365×1946×2193 | 4558×1665×2015 | 4001×1500×1870 | 3220×1500×1290 |
Transmission | Low noise gear box |
Here are some frequently asked questions about the 300mm diameter
roller rubber mill:
I. Equipment performance
Q1: What is the production efficiency of the 300mm diameter roller
rubber mill?
A1: Its production efficiency depends on many factors, such as the
operator's proficiency, rubber characteristics, and processing
requirements. Generally speaking, the mill can feed about 15-30kg
at a time, and a skilled operator can process several batches of
rubber per hour under reasonable process parameters. But for
complex mixing or plasticating tasks, it may take more time.
Q2: What scale of production is the mill with a roller diameter of
300mm suitable for?
A2: It is suitable for small and medium-sized rubber product
manufacturers. For some large-scale manufacturers, multiple
equipment or larger specifications of the mill may be required to
meet production needs. The equipment can handle the pre-processing
of a variety of rubber products, such as rubber tubes, rubber
seals, small rubber product accessories, etc.
II. Operation and use
Q1: How to correctly adjust the roller spacing?
A1: It is usually adjusted through the equipment's spacing device.
Before adjusting the roller spacing, the machine should be stopped
and the safety device should be in an effective state. The position
of the front roller can be adjusted manually or electrically, and
the roller spacing can be gradually adjusted to the appropriate
size according to the thickness of the rubber product to be
processed. During the adjustment process, pay attention to the
roller spacing display value to avoid excessive adjustment that may
cause equipment damage or affect product quality.
Q2: What are the safety precautions during operation?
A2: First of all, the operator must undergo professional training
and be familiar with the operation methods and safety regulations
of the equipment. Before starting the machine, check whether all
parts of the equipment are normal and whether the safety device is
effective. During operation, it is strictly forbidden to put your
hands or other objects into the roller gap to prevent danger. If an
emergency occurs, press the emergency stop button immediately. At
the same time, pay attention to wearing protective equipment, such
as gloves, goggles, etc.
3. Maintenance
Q1: How to perform daily maintenance?
A1: Daily maintenance includes cleaning the surface of the
equipment and the roller, checking whether the parts are firmly
connected, and lubricating the moving parts. After each use, the
residual rubber and debris on the surface of the roller should be
cleaned in time to keep the appearance of the equipment clean.
Check bolts, nuts and other connecting parts regularly, and tighten
them in time if they are loose. Lubricate moving parts such as
plungers, guides, chains, etc. regularly, select appropriate
lubricants and add them according to the prescribed cycle.
Q2: How often do you need to perform comprehensive maintenance?
A2: Generally speaking, comprehensive maintenance is required every
once in a while (such as a few months or depending on the frequency
of equipment use). Comprehensive maintenance includes checking the
hydraulic system, transmission system, electrical system, etc.,
replacing worn parts, cleaning and maintaining rollers, etc. The
specific maintenance cycle can be determined by referring to the
equipment manual or according to actual use.