English
Technical Parameters
Input power | 0.09kw~173kw |
Output torque | 20N.m~60800N.m |
Transmission ratio adjustment range | 6~658503 |
Price | 490~130000 yuan |
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Transmission Principle of Cycloidal Reducer
The cycloidal pinwheel reducer is a novel transmission device that applies the planetary transmission principle and adopts cycloidal pin-wheel meshing.
The entire transmission device of the cycloidal pinwheel reducer can be divided into three parts: input part, reduction part, and output part. On the input shaft, there is a double eccentric sleeve with a 180° phase displacement. On the eccentric sleeve, two roller bearings called arms are installed, forming an H mechanism. The center holes of the two cycloidal gears serve as the raceways for the arm bearings on the eccentric sleeve. The cycloidal gears mesh with a set of annularly arranged pin teeth on the pin gear to form an internal meshing reduction mechanism with a one-tooth difference. (To reduce friction, in reducers with small speed ratios, the pin teeth are equipped with pin sleeves.)
When the input shaft rotates one revolution with the eccentric sleeve, due to the characteristics of the tooth profile curve on the cycloidal gear and its limitation by the pin teeth on the pin gear, the motion of the cycloidal gear becomes a plane movement with both revolution and rotation. When the input shaft rotates one revolution in the positive direction, the eccentric sleeve also rotates one revolution, and the cycloidal gear rotates by one tooth in the opposite direction, thereby achieving reduction. Then, with the help of the W output mechanism, the low-speed rotational motion of the cycloidal gear is transmitted to the output shaft through the pin shafts, thereby obtaining a lower output speed.
Lubrication of Cycloidal Reducers
1. Horizontal cycloidal reducers generally use oil bath lubrication under normal conditions, with the oil level maintained in the middle of the oil sight window. In harsh working conditions or when the ambient temperature is high, circulating lubrication can be used.
2. Cycloidal pinwheel reducers typically use 150# or 220# machine oil for lubrication at room temperature. To improve the performance and extend the service life of the cycloidal pinwheel reducer, it is recommended to use 150# or 220# extreme pressure gear oil. When operating under high or low temperature conditions, the lubricating oil should be reconsidered.
3. For vertically installed planetary cycloidal pinwheel reducers, oil pump failure must be strictly prevented to avoid damage to the reducer components.
4. When adding oil, you can unscrew the vent cap on the upper part of the housing to add oil. When draining oil, unscrew the oil drain plug at the bottom of the housing to release the contaminated oil. The reducer is shipped without internal lubricating oil.
5. After the first oil filling and 100-300 hours of operation, the oil should be replaced (and the internal contaminated oil should be flushed clean). For subsequent continuous operation, the oil should be replaced every six months (based on an 8-hour working system). If working conditions are harsh, the oil change interval can be appropriately shortened. Practice has shown that regular cleaning and oil changes (such as every 3-6 months) play an important role in extending the service life of the reducer. Lubricating oil should be frequently replenished during use.
6. The shipped reducer 0-8155# has been filled with lubricating grease and should be replaced every six months.
Applications and Operating Conditions of Cycloidal Reducers
1. Applications
The cycloidal pinwheel reducer adopts cycloidal pinwheel meshing and planetary transmission principle, so it is also commonly referred to as a planetary cycloidal reducer. Planetary cycloidal pinwheel reducers can be widely used in petroleum, environmental protection, chemical, cement, conveying, textile, pharmaceutical, food, printing, lifting, mining, metallurgy, construction, power generation and other industries as driving or reduction devices. Its unique smooth structure can replace ordinary cylindrical gear reducers and worm gear reducers in many cases. Therefore, planetary cycloidal pinwheel reducers are widely used in various industries and fields, and are generally welcomed by users.
2. Operating Conditions
1. Cycloidal pinwheel reducers are allowed to be used in continuous duty applications and can operate in both forward and reverse directions.
2. The rated speed of the input shaft is 1500 rpm. When the input power is greater than 18.5 kW, it is recommended to use a 6-pole motor with 960 rpm.
3. The working position of horizontally installed cycloidal pinwheel reducers should be horizontal. During installation, the maximum horizontal inclination angle is generally less than 15°. When exceeding 15°, other measures should be taken to ensure adequate lubrication and prevent oil leakage.
4. The output shaft of cycloidal pinwheel reducers can’t withstand large axial and radial forces. When there are significant axial and radial forces, it is necessary to consult the manufacturer.
Advantages of Cycloidal Reducers
Planetary cycloidal reducers adopt the meshing of cycloidal gears and pin wheels, achieving the capability of multi-tooth simultaneous transmission, with a meshing surface of up to 67%, which avoids the possibility of tooth breakage. Therefore, the cycloidal pinwheel structure has a 500% overload capacity that other reducers cannot withstand. Planetary cycloidal pinwheel reducers utilize rolling meshing between cycloidal gears and pin wheels, which improves efficiency compared to the sliding meshing of traditional gear transmission, and are more suitable for frequent forward and reverse rotation and frequent starting actions.
Our company Tianjin Lashing Gearbox Co., Ltd. is dedicated to the improvement and promotion of cycloidal reducers. Lashing Gearbox was established by a team of highly positive and dedicated backbone members from the original Tianjin Reducer Factory. Our goal is to revitalize the prestige of Tianjin cycloidal reducers, carry forward the spirit of the old “Tianjin Reducer”, restore the dignity of Tianjin's famous products in the domestic market, contribute to China's national industry and make contributions to the development of China's basic components.
Causes of Overheating in Cycloidal Reducers
If a cycloidal pinwheel reducer becomes overheated during operation, there are generally several possible reasons:
A. This may be due to a problem or malfunction with the eccentric bearing.
B. Of course, other factors should also be considered. If the cycloidal pinwheel reducer frequently operates under overload conditions, this could also cause excessive temperature.
C. Regarding the temperature issue of the cycloidal pinwheel reducer, another important factor to consider is the lubricating oil. If the reducer lacks sufficient lubricating oil or the wrong type of oil is used, it may also cause the aforementioned problems. This requires targeted solutions based on the specific situation.
D. Of course, these are just general cases, and other factors should also be considered. For instance, if the machine is newly purchased, there might be improper assembly that could lead to problems. Certainly, this knowledge represents the initial considerations that should come to mind when discovering a temperature fault in the reducer, but it doesn't necessarily mean the problem originates from these causes.
Operation and Maintenance of Cycloidal Pinwheel Reducers
1. Suitable for continuous duty operation, allowing forward and reverse rotation;
2. When the output shaft and input shaft extensions are fitted with other components, direct hammering is not permitted to prevent shaft displacement and damage to internal parts;
3. When connecting the working machine and motor with a coupling, the two shaft centerlines should be aligned, with the coaxiality being less than the coupling tolerance;
4. After installation, the reducer should turn smoothly and easily by hand;
5. The shaft centerline of horizontal reducers should operate in a horizontal position. When tilting is necessary, the output shaft extension end should not angle downward more than 15° from the horizontal plane;
6. This machine primarily uses oil bath lubrication;
7. Ambient temperature: Use 150# extreme pressure gear oil at -10℃ to 0℃, and use 220# extreme pressure gear oil at 0℃ to 40℃;
8. Oil changing system: After the first oil filling and one week of operation, replace with new oil and clean out internal oil contaminants. Thereafter, change oil every 3-6 months. During operation, the oil level in the reducer must be maintained at the specified height - neither too much nor too little. Oil can be replenished by opening the breather cap or oil cup cover;
9. For reducers using grease lubrication, the oil changing interval can be appropriately extended;
10. Note: If the reducer was shipped without lubricating oil, users must add the specified amount of lubricating oil before use.
Causes of Cracking in Cycloidal Pinwheel Reducer Housing
No matter which model of Cycloidal Pinwheel Reducer, housing cracking is a very common failure. So what causes the housing to crack?
1. Overload operation of the reducer. After the reducer is selected and configured, its power is rated. If the actual torque used exceeds its rated torque, the reducer operates under overload, causing the housing to bear excessive weight and leading to housing rupture.
2. Intermittent impact. Some supporting machinery works through intermittent impact, such as drilling rigs, impact drills, etc. Due to the unpredictability of instantaneous impact force or when the impacted object exceeds the mechanical working range, excessive impact can cause damage.
3. Foreign objects inside or insufficient lubrication. During the operation of the reducer, internal parts may fall off or break, leading to impaired movement between components and resulting in parts detachment. Alternatively, depletion of lubricating oil can cause the housing to crack.
Features of Cycloidal Pinwheel Reducers
High speed ratio and high efficiency: Single-stage transmission can achieve a reduction ratio of 1:87 with efficiency over 90%. If multi-stage transmission is used, the reduction ratio is even greater.
The reduction ratio for single-stage transmission is 9~87, for double-stage transmission is 121~5133, and multi-stage combinations can reach tens of thousands. Moreover, the pin-tooth meshing system adopts rolling friction, and there is no relative sliding on the meshing surface, so the single-stage reduction efficiency reaches 94%.
Compact structure and small volume: Due to the adoption of planetary transmission principle, the input shaft and output shaft are on the same center line, enabling the machine to achieve the smallest possible dimensions.
Smooth operation and low noise: The cycloidal pinwheel meshing has a large number of teeth and high overlap coefficient, along with a mechanism for component balance, which limits vibration and noise to the minimum extent.
During operation, many pairs of teeth are in contact simultaneously, with high overlap coefficient, resulting in smooth operation, strong overload capacity, low vibration and noise. All models of various specifications produce low noise.
Reliable operation and long service life: Because main parts are made of high-carbon chromium steel material and undergo quenching treatment (HRC58~62) to obtain high strength, and because some transmission contacts adopt rolling friction, they are durable and have a long service life.
Because main parts are made of high-carbon alloy steel, undergo quenching treatment (HRC58-62), and are then precision ground, and because the cycloidal teeth mesh with pin-tooth sleeves to form rolling friction pairs with a small friction coefficient, there is no relative sliding in the meshing area and minimal wear, making them durable.
Reasonable design, convenient maintenance, easy disassembly and installation, minimum number of parts, and simple lubrication make cycloidal pinwheel reducers deeply trusted by users.
Causes of Vibration Faults in Cycloidal Pinwheel Reducers
Why does vibration occur during the operation of cycloidal pinwheel reducers? Some users experience excessive vibration that leads to reducer damage. Let's summarize the various causes of vibration in cycloidal pinwheel reducers.
1. Insecure fixing: For vertical reducers, the front mounting flange of the cycloidal pinwheel reducer may not be securely fixed to the machinery, causing looseness between the reducer and machinery that leads to vibration; For horizontal cycloidal pinwheel reducers, the base may not be securely fixed to the machinery, causing mechanical vibration.
2. Vibration caused by resonance. Generally, it is more suitable for small power reducers to be fixed on steel, which has relatively small shock absorption capacity. If resonance occurs between the reducer and the steel base during operation, it can also cause reducer vibration leading to damage. For reducers with larger power, a base constructed of concrete can be used to avoid vibration caused by resonance and the resulting damage.
Improvement of Vertical Cycloidal Reducer Mixing Device
Cycloidal pinwheel reducers can be widely applied to reduction mechanisms in various transmission machinery. When used in mixing transmission devices in industries such as chemical and water treatment, they are often required to start under load and operate for extended periods, with explosion-proof requirements for the entire unit. Due to advantages such as strong overload capacity, simple structure, high efficiency, and large speed ratio, cycloidal reducers are very suitable for this type of transmission equipment. Based on the above working conditions, it is recommended to use the mixing vertical cycloidal reducer transmission device produced by Lashing, which is matched with mechanical piston pumps.
Several improvements made by Lashing specifically for vertical cycloidal reducers:
1. High-quality eccentric bearings are selected, and the eccentric structure is strengthened to maintain good stability under large loads and impacts.
2. Poor lubrication can cause damage to the entire reducer. Lashing uses mechanical piston pumps for forced lubrication, which not only ensures the lubrication of the entire unit but also avoids problems such as non-explosion-proof gear pump motors being prone to burnout. Moreover, mechanical piston pumps operate more smoothly than ordinary motor gear pumps, are less prone to clogging, and perform oil pumping work very smoothly and durably, ensuring long-term effective lubrication of the reducer transmission.
3. Mixing transmission devices generally have downward output shafts. Due to gravity, impurities such as iron filings and sand dust in the lubricating oil mostly settle at the bottom of the base. Over time, this affects the service life of the base bearings. Lashing has specially designed a pollution isolation device for the output bearing position of cycloidal reducers used for mixing, thereby extending the service life of the output end bearings.
Technical Parameters
Input power | 0.09kw~173kw |
Output torque | 20N.m~60800N.m |
Transmission ratio adjustment range | 6~658503 |
Price | 490~130000 yuan |
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Transmission Principle of Cycloidal Reducer
The cycloidal pinwheel reducer is a novel transmission device that applies the planetary transmission principle and adopts cycloidal pin-wheel meshing.
The entire transmission device of the cycloidal pinwheel reducer can be divided into three parts: input part, reduction part, and output part. On the input shaft, there is a double eccentric sleeve with a 180° phase displacement. On the eccentric sleeve, two roller bearings called arms are installed, forming an H mechanism. The center holes of the two cycloidal gears serve as the raceways for the arm bearings on the eccentric sleeve. The cycloidal gears mesh with a set of annularly arranged pin teeth on the pin gear to form an internal meshing reduction mechanism with a one-tooth difference. (To reduce friction, in reducers with small speed ratios, the pin teeth are equipped with pin sleeves.)
When the input shaft rotates one revolution with the eccentric sleeve, due to the characteristics of the tooth profile curve on the cycloidal gear and its limitation by the pin teeth on the pin gear, the motion of the cycloidal gear becomes a plane movement with both revolution and rotation. When the input shaft rotates one revolution in the positive direction, the eccentric sleeve also rotates one revolution, and the cycloidal gear rotates by one tooth in the opposite direction, thereby achieving reduction. Then, with the help of the W output mechanism, the low-speed rotational motion of the cycloidal gear is transmitted to the output shaft through the pin shafts, thereby obtaining a lower output speed.
Lubrication of Cycloidal Reducers
1. Horizontal cycloidal reducers generally use oil bath lubrication under normal conditions, with the oil level maintained in the middle of the oil sight window. In harsh working conditions or when the ambient temperature is high, circulating lubrication can be used.
2. Cycloidal pinwheel reducers typically use 150# or 220# machine oil for lubrication at room temperature. To improve the performance and extend the service life of the cycloidal pinwheel reducer, it is recommended to use 150# or 220# extreme pressure gear oil. When operating under high or low temperature conditions, the lubricating oil should be reconsidered.
3. For vertically installed planetary cycloidal pinwheel reducers, oil pump failure must be strictly prevented to avoid damage to the reducer components.
4. When adding oil, you can unscrew the vent cap on the upper part of the housing to add oil. When draining oil, unscrew the oil drain plug at the bottom of the housing to release the contaminated oil. The reducer is shipped without internal lubricating oil.
5. After the first oil filling and 100-300 hours of operation, the oil should be replaced (and the internal contaminated oil should be flushed clean). For subsequent continuous operation, the oil should be replaced every six months (based on an 8-hour working system). If working conditions are harsh, the oil change interval can be appropriately shortened. Practice has shown that regular cleaning and oil changes (such as every 3-6 months) play an important role in extending the service life of the reducer. Lubricating oil should be frequently replenished during use.
6. The shipped reducer 0-8155# has been filled with lubricating grease and should be replaced every six months.
Applications and Operating Conditions of Cycloidal Reducers
1. Applications
The cycloidal pinwheel reducer adopts cycloidal pinwheel meshing and planetary transmission principle, so it is also commonly referred to as a planetary cycloidal reducer. Planetary cycloidal pinwheel reducers can be widely used in petroleum, environmental protection, chemical, cement, conveying, textile, pharmaceutical, food, printing, lifting, mining, metallurgy, construction, power generation and other industries as driving or reduction devices. Its unique smooth structure can replace ordinary cylindrical gear reducers and worm gear reducers in many cases. Therefore, planetary cycloidal pinwheel reducers are widely used in various industries and fields, and are generally welcomed by users.
2. Operating Conditions
1. Cycloidal pinwheel reducers are allowed to be used in continuous duty applications and can operate in both forward and reverse directions.
2. The rated speed of the input shaft is 1500 rpm. When the input power is greater than 18.5 kW, it is recommended to use a 6-pole motor with 960 rpm.
3. The working position of horizontally installed cycloidal pinwheel reducers should be horizontal. During installation, the maximum horizontal inclination angle is generally less than 15°. When exceeding 15°, other measures should be taken to ensure adequate lubrication and prevent oil leakage.
4. The output shaft of cycloidal pinwheel reducers can’t withstand large axial and radial forces. When there are significant axial and radial forces, it is necessary to consult the manufacturer.
Advantages of Cycloidal Reducers
Planetary cycloidal reducers adopt the meshing of cycloidal gears and pin wheels, achieving the capability of multi-tooth simultaneous transmission, with a meshing surface of up to 67%, which avoids the possibility of tooth breakage. Therefore, the cycloidal pinwheel structure has a 500% overload capacity that other reducers cannot withstand. Planetary cycloidal pinwheel reducers utilize rolling meshing between cycloidal gears and pin wheels, which improves efficiency compared to the sliding meshing of traditional gear transmission, and are more suitable for frequent forward and reverse rotation and frequent starting actions.
Our company Tianjin Lashing Gearbox Co., Ltd. is dedicated to the improvement and promotion of cycloidal reducers. Lashing Gearbox was established by a team of highly positive and dedicated backbone members from the original Tianjin Reducer Factory. Our goal is to revitalize the prestige of Tianjin cycloidal reducers, carry forward the spirit of the old “Tianjin Reducer”, restore the dignity of Tianjin's famous products in the domestic market, contribute to China's national industry and make contributions to the development of China's basic components.
Causes of Overheating in Cycloidal Reducers
If a cycloidal pinwheel reducer becomes overheated during operation, there are generally several possible reasons:
A. This may be due to a problem or malfunction with the eccentric bearing.
B. Of course, other factors should also be considered. If the cycloidal pinwheel reducer frequently operates under overload conditions, this could also cause excessive temperature.
C. Regarding the temperature issue of the cycloidal pinwheel reducer, another important factor to consider is the lubricating oil. If the reducer lacks sufficient lubricating oil or the wrong type of oil is used, it may also cause the aforementioned problems. This requires targeted solutions based on the specific situation.
D. Of course, these are just general cases, and other factors should also be considered. For instance, if the machine is newly purchased, there might be improper assembly that could lead to problems. Certainly, this knowledge represents the initial considerations that should come to mind when discovering a temperature fault in the reducer, but it doesn't necessarily mean the problem originates from these causes.
Operation and Maintenance of Cycloidal Pinwheel Reducers
1. Suitable for continuous duty operation, allowing forward and reverse rotation;
2. When the output shaft and input shaft extensions are fitted with other components, direct hammering is not permitted to prevent shaft displacement and damage to internal parts;
3. When connecting the working machine and motor with a coupling, the two shaft centerlines should be aligned, with the coaxiality being less than the coupling tolerance;
4. After installation, the reducer should turn smoothly and easily by hand;
5. The shaft centerline of horizontal reducers should operate in a horizontal position. When tilting is necessary, the output shaft extension end should not angle downward more than 15° from the horizontal plane;
6. This machine primarily uses oil bath lubrication;
7. Ambient temperature: Use 150# extreme pressure gear oil at -10℃ to 0℃, and use 220# extreme pressure gear oil at 0℃ to 40℃;
8. Oil changing system: After the first oil filling and one week of operation, replace with new oil and clean out internal oil contaminants. Thereafter, change oil every 3-6 months. During operation, the oil level in the reducer must be maintained at the specified height - neither too much nor too little. Oil can be replenished by opening the breather cap or oil cup cover;
9. For reducers using grease lubrication, the oil changing interval can be appropriately extended;
10. Note: If the reducer was shipped without lubricating oil, users must add the specified amount of lubricating oil before use.
Causes of Cracking in Cycloidal Pinwheel Reducer Housing
No matter which model of Cycloidal Pinwheel Reducer, housing cracking is a very common failure. So what causes the housing to crack?
1. Overload operation of the reducer. After the reducer is selected and configured, its power is rated. If the actual torque used exceeds its rated torque, the reducer operates under overload, causing the housing to bear excessive weight and leading to housing rupture.
2. Intermittent impact. Some supporting machinery works through intermittent impact, such as drilling rigs, impact drills, etc. Due to the unpredictability of instantaneous impact force or when the impacted object exceeds the mechanical working range, excessive impact can cause damage.
3. Foreign objects inside or insufficient lubrication. During the operation of the reducer, internal parts may fall off or break, leading to impaired movement between components and resulting in parts detachment. Alternatively, depletion of lubricating oil can cause the housing to crack.
Features of Cycloidal Pinwheel Reducers
High speed ratio and high efficiency: Single-stage transmission can achieve a reduction ratio of 1:87 with efficiency over 90%. If multi-stage transmission is used, the reduction ratio is even greater.
The reduction ratio for single-stage transmission is 9~87, for double-stage transmission is 121~5133, and multi-stage combinations can reach tens of thousands. Moreover, the pin-tooth meshing system adopts rolling friction, and there is no relative sliding on the meshing surface, so the single-stage reduction efficiency reaches 94%.
Compact structure and small volume: Due to the adoption of planetary transmission principle, the input shaft and output shaft are on the same center line, enabling the machine to achieve the smallest possible dimensions.
Smooth operation and low noise: The cycloidal pinwheel meshing has a large number of teeth and high overlap coefficient, along with a mechanism for component balance, which limits vibration and noise to the minimum extent.
During operation, many pairs of teeth are in contact simultaneously, with high overlap coefficient, resulting in smooth operation, strong overload capacity, low vibration and noise. All models of various specifications produce low noise.
Reliable operation and long service life: Because main parts are made of high-carbon chromium steel material and undergo quenching treatment (HRC58~62) to obtain high strength, and because some transmission contacts adopt rolling friction, they are durable and have a long service life.
Because main parts are made of high-carbon alloy steel, undergo quenching treatment (HRC58-62), and are then precision ground, and because the cycloidal teeth mesh with pin-tooth sleeves to form rolling friction pairs with a small friction coefficient, there is no relative sliding in the meshing area and minimal wear, making them durable.
Reasonable design, convenient maintenance, easy disassembly and installation, minimum number of parts, and simple lubrication make cycloidal pinwheel reducers deeply trusted by users.
Causes of Vibration Faults in Cycloidal Pinwheel Reducers
Why does vibration occur during the operation of cycloidal pinwheel reducers? Some users experience excessive vibration that leads to reducer damage. Let's summarize the various causes of vibration in cycloidal pinwheel reducers.
1. Insecure fixing: For vertical reducers, the front mounting flange of the cycloidal pinwheel reducer may not be securely fixed to the machinery, causing looseness between the reducer and machinery that leads to vibration; For horizontal cycloidal pinwheel reducers, the base may not be securely fixed to the machinery, causing mechanical vibration.
2. Vibration caused by resonance. Generally, it is more suitable for small power reducers to be fixed on steel, which has relatively small shock absorption capacity. If resonance occurs between the reducer and the steel base during operation, it can also cause reducer vibration leading to damage. For reducers with larger power, a base constructed of concrete can be used to avoid vibration caused by resonance and the resulting damage.
Improvement of Vertical Cycloidal Reducer Mixing Device
Cycloidal pinwheel reducers can be widely applied to reduction mechanisms in various transmission machinery. When used in mixing transmission devices in industries such as chemical and water treatment, they are often required to start under load and operate for extended periods, with explosion-proof requirements for the entire unit. Due to advantages such as strong overload capacity, simple structure, high efficiency, and large speed ratio, cycloidal reducers are very suitable for this type of transmission equipment. Based on the above working conditions, it is recommended to use the mixing vertical cycloidal reducer transmission device produced by Lashing, which is matched with mechanical piston pumps.
Several improvements made by Lashing specifically for vertical cycloidal reducers:
1. High-quality eccentric bearings are selected, and the eccentric structure is strengthened to maintain good stability under large loads and impacts.
2. Poor lubrication can cause damage to the entire reducer. Lashing uses mechanical piston pumps for forced lubrication, which not only ensures the lubrication of the entire unit but also avoids problems such as non-explosion-proof gear pump motors being prone to burnout. Moreover, mechanical piston pumps operate more smoothly than ordinary motor gear pumps, are less prone to clogging, and perform oil pumping work very smoothly and durably, ensuring long-term effective lubrication of the reducer transmission.
3. Mixing transmission devices generally have downward output shafts. Due to gravity, impurities such as iron filings and sand dust in the lubricating oil mostly settle at the bottom of the base. Over time, this affects the service life of the base bearings. Lashing has specially designed a pollution isolation device for the output bearing position of cycloidal reducers used for mixing, thereby extending the service life of the output end bearings.
