Zhejiang Sankai Mechanical and Electrical Co., Ltd

Worm Reducer

Worm Reducer

Worm Gear reducers are utilized in power transmission applications requiring high ratio speed reduction in a limited space. The gears are used on right angle, non-intersecting shafts. Worm gear reducers are used in low to moderate horsepower applications.
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Zhejiang Sankai Machine and Electric Co.,Ltd

 

 

Zhejiang Sankai Machine and Electric Co.,Ltd is an integrative and professional manufacturer of power transmission device, which specialize in scientific research, production and marketing. As located in Taizhou city, southeast of Zhejiang province, Zhejiang Sankai has a very convenient transport system. And after years' effort, based on dedication and pragmatic management, Sankai has become a famous innovator among transmission industry in the world.

 

Why Choose US

 

 

Our Factory
Zhejiang Sankai Machine and Electric Co.,Ltd is an integrative and professional manufacturer of power transmission device, which specialize in scientific research, production and marketing.

 

Innovation
Adopting advanced detecting equipment and means, company establishes a quality control system that is in accordance with 1S0900 I: 2015. Products are sold all over the country, exporting to Southeast Asia, Europe, America and other regions. Sankai will continue, as we always do, to strive to become a leader of power transmission industry.

 

Our Products
Our company specialize in High Precision Planetary Gearbox, NMRV series Worm Gearbox, UDL series Stepless Speed Variator, SRC series Helical Gearbox, SKM series Helical-Hypoid Gearbox, Precision Gearbox for Robot Arm and PC Helical Gear Unit.

 

Quality services
Sincerely Sankai determine to provide service of better quality, in-time and fast reply to our clients. And Sankai is looking forward to cooperating with domestic and foreign friends and grow together with our hard work and professionalism.

 

Right Angle Worm Gearbox

Right Angle Worm Gearbox

A Right Angle Worm Gearbox works by turning the worm shaft, which meshes with the teeth of the worm wheel. As the worm shaft rotates, it causes the worm wheel to rotate in a perpendicular direction, effectively reducing the rotational speed and increasing torque.

Right Angle Reducer

Right Angle Reducer

Right Angle Reducers are primarily used for speed reduction due to their high torque multiplication. However, they can be designed to achieve speed increase by reversing the direction of the input and output shafts.

Right Angle Gear Reducer

Right Angle Gear Reducer

Right Angle Gear Reducers are not reversible due to their self-locking feature. The worm screw's thread angle prevents the worm wheel from driving the worm shaft in reverse.

Gear Reduction Gearbox

Gear Reduction Gearbox

A Gear reduction gearbox works by turning the worm shaft, which meshes with the teeth of the worm wheel. As the worm shaft rotates, it causes the worm wheel to rotate in a perpendicular direction, effectively reducing the rotational speed and increasing torque.

Double Reduction Gearbox

Double Reduction Gearbox

Double Reduction Gearboxes are primarily used for speed reduction due to their high torque multiplication. However, they can be designed to achieve speed increase by reversing the direction of the input and output shafts.

Worm Gear Units

Worm Gear Units

Worm Gear Units are primarily used for speed reduction due to their high torque multiplication. However, they can be designed to achieve speed increase by reversing the direction of the input and output shafts.

Double Speed Gear Reducer

Double Speed Gear Reducer

Double Speed Gear Reducers can produce more noise compared to other types of gearboxes due to the sliding action between the worm shaft and worm wheel. Adequate lubrication and proper maintenance can help reduce noise levels.

Worm Gear Reduction Gearbox

Worm Gear Reduction Gearbox

A Worm Gear Reduction Gearbox is a type of mechanical power transmission device that consists of a worm shaft and a worm wheel. It is used to transmit rotational motion at a reduced speed while increasing torque.

Worm Reducer

Worm Reducer

Some advantages of using a Worm Reducer include high torque multiplication, compact size, and self-locking feature, which prevents backward rotation. It is also suitable for applications where high reduction ratios are required.

 

What is Worm Reducer

 

 

Worm Gear reducers are utilized in power transmission applications requiring high ratio speed reduction in a limited space. The gears are used on right angle, non-intersecting shafts. Worm gear reducers are used in low to moderate horsepower applications. They offer low initial cost, high ratios, and high output torque in a small package. Worm gear reducers have a much higher tolerance for shock loading then helical gear reducers.

 

Advantages of Worm Reducer

Higher Torque Output & Greater Speed Reduction
Continues to lead the industry by offering gearboxes that deliver more torque than their competitors. In the case of a worm gear drive system, the screw-like shaft rotates the sprocket to produce more power from a motor to the output source or reduce speed to achieve optimal momentum.

 

Greater Security & Safety
Mechanically, these gearboxes aren't reversible, so the worm wheel cannot drive the worm-like shaft. For example, when abrupt disruptions occur, an output shaft won't turn in the opposite direction, nor will it when powered down. Consequently, users gain better security by avoiding slippage.

Low Noise Levels

Worm speed reducers have become famous for being the smoothest and quietest gear systems when appropriately lubricated, making them ideal for applications where noise needs to be limited. This is partly due to their ability to reduce vibrations because of their concise, compact design.

More Versatility

Thanks to their compact design and low noise levels, many industries use worm gearboxes for a wide range of applications, including automotive systems, industrial machinery, conveyor systems, and even some household appliances.

Applicability in Right-Angle Drives

Worm gears are well-suited for right-angle drives, where the motion needs to be transferred at a 90-degree angle. This makes them useful in applications like conveyor systems, where space constraints may require such a design.

Worm Gear Units

 

How Does a Worm Gear Reducer Work

A worm pinion is a screw used to input power to the assembly. When coupled with a standard spur gear fitted with slightly angled teeth in a perpendicular alignment, known as a worm gear or worm wheel, the pairing becomes a worm gear reducer. As power from an engine or motor turns the worm pinion, its spirals push the teeth on the worm wheel, causing it to turn in accordance with the designed reduction ratio as it applies load to its drive shaft.
Higher reduction ratios may be achieved by increasing the circumference of the worm gear, or by increasing the number of threads on the worm pinion. Accomplishing the same reduction using conventional gear sets requires multiple reductions, which take up more space. Increasing the number of parts raising costs and adding to the risk of component failure.

 

Design of Worm Gear Reducers

Worm gear speed reducers are a subclass of speed reducers with a primary speed reduction arrangement known as a right angle. They are widely used in the farming, automotive, and manufacturing industries. A helical gear with shallow diagonally cut teeth is one of the main components of this gearbox. Helical gears are the output gears, or the gears attached to the engine, in a worm gear reducer. They are recognized for their smooth and silent operation.
Another important component of the worm gear reducer system is the input gear, which is formed like a screw and has diagonal cuts like the helical gear, which is why they are frequently coupled together. The two gears can convert a high-speed, low-torque input into the inverse: A high-torque, low-speed input. It's a compact, elegant gearbox that's less expensive than other gearboxes and provides excellent shock absorption.

Worm Gear Units

How to Choose Worm Reducer

 

 

The worm gear reducer is a power transmission mechanism that uses the speed converter of the gear to reduce the number of revolutions of the motor (motor) to the desired number of revolutions and obtain a larger torque. In the mechanism currently used to transmit power and motion, the application range of the reducer is quite wide. The selection of the worm gear reducer mainly considers three aspects, calculating the speed ratio, calculating the torque, and the direction of the input shaft.
Worm gear reducer selection method:


Calculation of speed ratio: Try to choose a reduction ratio close to the ideal, the calculation method of speed ratio is as follows: reduction ratio = motor speed (standard speed 1400) / reducer output shaft speed;


Calculate the torque: For the life of the reducer, the calculation of the torque is very important, and it is necessary to pay attention to whether the maximum torque value of the acceleration exceeds the maximum load torque of the reducer;


Determine the direction of the output and input shafts: The reducer has a horizontal type and a vertical type, and the directions of the output and input shafts are as follows: L direction: single input and single output, the input shaft is at the right end, and the output shaft is at the front; R direction: single input and single output , the input shaft is at the left end, the output shaft is at the front; V direction: Single input and double output, the input shaft is at the left end and the double output shaft is at the front/back; W direction: double input and single output input shaft is at the left and right ends, and the output is at the front; F Direction: double input and double output, the input shaft is at the left and right ends, and the output is at the front/rear;


In general, worm gear reducers often have to limit the maximum radial load allowed by the middle part of the input shaft and output shaft shaft extension, which should be checked. If it exceeds, it should be proposed to the reducer factory to increase the shaft diameter and increase bearing requirements.

 

Double Speed Gear Reducer

 

Working Conditions of Worm Gear Reducer

●The transmission is stable, the vibration, impact and noise are small, the reduction ratio is large, the versatility is wide, and it can be used with various mechanical equipment.
●A large transmission ratio can be obtained with a single-stage transmission, and the structure is compact. Most types of reducers have better self-locking properties, and brake devices can be saved for mechanical equipment that requires braking.
●The meshing friction loss between the worm screw teeth and the worm gear tooth surface is relatively large, so the transmission efficiency is lower than that of the gear, and it is prone to heat and high temperature.
●Higher requirements for lubrication and cooling.
●Good compatibility, worm gears and worms are manufactured according to national standards, and standard parts are used for bearings and oil seals.
●Two or three reducers can be used to form a multi-stage reducer to obtain a large transmission ratio.

 

Selection Methods of Worm Gearbox

 

 

(1) Determine the model and size of the required reducer.


(2) Calculate the right speed ratio. The speed ratio calculation method is: speed ratio = motor speed/output shaft speed of the gearbox.


(3) Determine the torque (power) of the gearbox: the torque is crucial to the life of the gearbox. The maximum torque of the gearbox shouldn't exceed the maximum load torque.


(4) Determine the output and input shaft directions: the gearbox has horizontal and vertical types.The output and input shaft directions are:
L direction: Single input and single output, the right end is the input shaft, and the front is the output shaft.
R direction: Single input and single output, the left end is the input shaft, and the forward output shaft.
V direction: Single input and double output, the left end is the input shaft, and the double output shaft is positive/back
W direction: Double input and single output, the input shaft is on the left and right ends, and the forward output.
F direction: Double input and double output, the input shaft is on the left and right ends, and the forward/backward output.


(5) The size of the input hole and input flange.


(6) The size of the output hole or output shaft


(7)Check if other accessories are needed, such as torque arms, output flanges, single/double output shafts, etc.

 

 

Precautions for Using Worm Gearbox

●Before using the worm gear reducer, check if the form and structure of the reducer, the transmission ratio, the center distance, the output shaft structure, the input shaft connection method are correct.
●Check the oil level before use. This can be observed through the oil level static hole or by opening the oil plug.
●Gradually increase the load before use, and do not start at full load.
●The reducer should not be exposed to sunlight or harsh environments to avoid damage to the reducer.
●The standard working environment temperature of the reducer should be maintained at -5℃ to 40℃.
●Ensure ventilation that does not affect the motor fan's heat dissipation.
●If the reducer is stored for a long time, such as more than 4 months, check if the oil seal is immersed in lubricating oil and whether the oil seal has elasticity.

Worm Gear Units

 

 
What Are the Precautions for the Installation of the Worm Reducer
 
01/

Clean the shaft before installing the reducer. And check whether the installation shaft has bruises and dirt, if any, all should be cleaned up.

02/

Before installing the worm reducer, confirm whether the motor and reducer are intact, and strictly check whether the size of each part connecting the motor and the reducer matches.

03/

When installing the transmission parts on the output shaft, it is not allowed to hit with a hammer. Usually use the assembly fixture and the internal thread of the shaft end to press the transmission parts in with bolts, otherwise it may cause damage to the internal parts of the reducer.

04/

Before use, the high position should be blocked to ensure that the reducer is discharged from the body during operation. If it is not replaced in time, the worm reducer will run for a long time, causing the gas in the reducer to swell the oil seal, and even the reducer will leak oil.

 

Precautions for Installation and Maintenance of Worm Gear Reducer
 

The selection of the installation location of the reducer. Where the location permits, try not to use vertical installation. In vertical installation, the amount of lubricating oil added is much more than that in horizontal installation, which may easily cause heat generation and oil leakage of the reducer.

 

Ensure assembly quality. You can buy or make some special tools. When disassembling and installing the parts of the reducer, try to avoid hitting with other tools such as hammers; when replacing gears and worm gears, try to use original parts and replace them in pairs; when assembling the output shaft, pay attention Tolerance matching; anti-sticking agent or red lead oil should be used to protect the hollow shaft to prevent abrasion, rust, or dirt on the mating area, which is difficult to disassemble during maintenance.

 

Establish a lubrication maintenance system. The reducer can be maintained according to the "five fixed" principle of lubrication work, so that every reducer has a person responsible for regular inspections, and it is found that the temperature rise is obvious, if the temperature exceeds 40 ℃ or the oil temperature exceeds 80 ℃, the quality of the oil decreases or the oil If you find too much copper powder and produce abnormal noise, you should stop using it immediately, check and repair it in time, eliminate the fault, and replace the lubricating oil. When refueling, pay attention to the amount of oil to ensure that the reducer is properly lubricated.

 

Selection of lubricating oil and additives. Worm gear reducers generally use 220# gear oil. For reducers with heavy loads, frequent starts, and poor use environments, some lubricating oil additives can be used to make the gear oil still adhere to the gear surface when the reducer stops running, forming a protective film , To prevent heavy load, low speed, high torque and direct contact between metals when starting. The additives contain seal ring regulator and anti-leakage agent to keep the seal ring soft and elastic and effectively reduce lubricating oil leakage.

 

 
FAQ
 
 

Q: What is the purpose of a gear reducer?

A: Gear reducers are a gear or series of gears designed to reduce the torque of a motor, which increases in direct proportion to the reduction of rotations per unit of time or revolutions per minute.

Q: What is the difference between a gearbox and a reducer?

A: The first of two primary purposes of a gearbox is to increase the torque of your motor. A gear reducer increases the torque of your motor, thus allowing a receiving member to rotate under the impact of a new torque.

Q: What is a worm gear used for?

A: Worm gears are commonly used for speed reduction because multiple conventional gear sets are needed to achieve the same effect. Rather than installing more gear sets, worm gears have an increased reduction ratio, which makes them more effective.

Q: Why is it called reducer?

A: The purpose of a reducer is to take the current state and an action, then return a new state. It reduces a set of values to a single value, in this case, the state of your application.

Q: Does a gear reducer increase the RPM of the motor?

A: For example, if a motor turns at 1800 RPM, and that motor is connected to a 10:1 gear reducer, the reducer will output 180RPM.

Q: How do I choose a gear reducer?

A: The first step in selecting a gear reducer is to know the required torque and speed as well as the most suitable type of motor to use. Then, it can be determined if a gear reducer is needed in the particular case. If so, then the next step is to select the proper type and ratio.

Q: What is the opposite of gear reducer?

A: What is the opposite of gear reduction? The exact opposite of gear reduction would be a device that increases speed while decreasing torque. Anything that makes a motor faster while reducing the torque is the opposite of a gear reducer.

Q: What is the difference between worm gearbox and bevel gearbox?

A: Worm Gearboxes are renowned for their low-power, low-speed applications. However, it has limited capability for power transmission. The Bevel Helical Gearbox enables a wide variety of applications. They have a better capacity for power transfer than worm gearboxes.

Q: What is the difference between worm gear and planetary gear?

A: Worm gears have the greatest deceleration, carrying capacity and slower linear speed. Planetary gear winches are more efficient, which means that they cannot hold the load and have a tendency to loosen under load, but have a higher linear speed.

Q: What are the different types of gear reducers?

A: Planetary gear reducers, worm gear reducers, gear train gear reducers, plus bevel gear reducers are the four primary kinds of gear reducers.

Q: What is a worm reduction gearbox?

A: Posted by Torque Transmission. A worm gear reducer is one type of reduction gear box which consists of a worm pinion input, an output worm gear, and features a right angle output orientation.

Q: What is reducer in mechanical engineering?

A: A mechanical reducer is an independent closed transmission device between the prime power source and the working machine, used to reduce the speed and increase the torque to meet the needs of various machines.

Q: Why is it called a worm gear?

A: A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm wheel (which is similar in appearance to a spur gear). The two elements are also called the worm screw and worm gear.

Q: What are the advantages of worm gear reduction unit?

A: They are often the preferred type of gearing system when space is limited and large gear reductions are needed. Worm gears can be used to either greatly increase torque or greatly reduce speed. They are also the smoothest and quietest of the gear systems, as long as they are properly mounted and lubricated.

Q: Which of the following are advantages of worm gear reducers?

A: Faster lifting speeds - Load brakes accumulate excessive heat as lifting speeds increase. Inherently safe - Worm drives do not need controls or high maintenance mechanisms to ensure safe lifts. Low Maintenance - Less moving parts than gearboxes that require complex load brake mechanisms.

Q: What is the function of worm reducer?

A: The main functions of worm gear reducers are: 1. Reduce the speed and increase the output torque at the same time. The torque output ratio is based on the motor output multiplied by the reduction ratio, but it should be noted that the rated torque of the reducer cannot be exceeded.

Q: What are the advantages of a worm set reducer over a simple set of spur gears?

A: It will typically take multiple reductions of a conventional gearset to achieve the same reduction level of a single worm gear - meaning users of worm gears have fewer moving parts and fewer places for failure.

Q: How does a worm gear reducer work?

A: How Does a Worm Gear Reducer Work? A worm pinion is a screw used to input power to the assembly. When coupled with a standard spur gear fitted with slightly angled teeth in a perpendicular alignment, known as a worm gear or worm wheel, the pairing becomes a worm gear reducer.

Q: How do you lubricate worm gear?

A: In these applications, a specific type of mineral-based lubricant known as a compounded oil can be used. This lubricant is formulated with up to 10 percent fatty acid (natural oil) or acidless tallow as the compounding agent along with rust and oxidation inhibitors and other additives.

Q: What is the best oil for worm gearbox?

A: Polyalkylene glycols (PAGs) are excellent for worm gear applications. They possess superior lubricity properties and have good low and high temperature properties. The Viscosity Index of PAGs is higher than most synthetics, approaching 280.

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