Tag Archives: hollow shaft reducer

China best Iron Aluminum Shell Worm Gearbox with Output Hollow Shaft Speed Reducer gearbox and motor

Product Description

Model No

NMRV571, NMRV030, NMRV040, NMRV050, NMRV063, NMRV075, NMRV090, NMRV110, NMRV130, NMRV150

Ratio

5,7.5,10,15,20,25,30,40,50,60,80,100

Type

Worm Gear Speed Reducer / Gearbox / Reductor

Color

Customized Color

Packing

Carton, Honey Comb Carton, Wooden Case with Wooden Pallet

Usage

Industrial Machine, Food Stuff, Ceramics, Chemical, Packing, Dyeing, Wood Working, Glass, etc.

Flange

IEC standard flange or customized dimensions

Housing Material

Aluminum&Cast iron

Size

11 sizes(WMRV25~WMRV185)

Power

0.06~22 KW

Nominal torque

≤2548 N.m

Ratio

5~100

PRODUCTS CHARACTERISTICS
1. Mad of high-quality aluminum alloy,light weight and non-rusting
2. Large output torque
3. Smooth in running and low in noise,can work long time in dreadful conditions.
4. High in radiating efficiency.
5. Good-looking in appearance,durable in service life and small in volume.
6. Suitable for omnibearing installation.

FAQ
Q1:Are you a manufacturer or trading company?
 
Yes, We are a leading manufacturer specialized in production of various kinds of small and medium-sized
 motor.

Q2:How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.

Q3:What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor information etc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.

Q4:What industries are your gearboxes being used?
Our gearboxes are widely used in the areas of textile, food processing, beverage, chemical industry, escalator,automatic storage equipment, metallurgy, tabacco, environmental protection, logistics and etc.

Q5:How about your delivery time?
For micro brush dc gear motor, the sample delivery time is 2-5 days, bulk delivery time is about 15-20 days, depends on the order qty. For brushless dc motor, the sample deliver time is about 10-15 days; bulk time is 15-20 days.Please take the sales confirmation for final reference.

Q6:What’s your warranty terms?
One year
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Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, Car
Function: Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout: as for Request
Hardness: Hardened Tooth Surface
Installation: as for Request
Step: as for Request
Samples:
US$ 25/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

worm gearbox

Maintenance Tips for Prolonging the Life of a Worm Gearbox

Proper maintenance is essential to ensure the longevity and reliable performance of a worm gearbox. Here are some maintenance tips to consider:

  • Lubrication: Regularly check and replenish the lubricant in the gearbox. Use the recommended lubricant type and quantity specified by the manufacturer.
  • Lubrication Schedule: Follow a lubrication schedule based on the operating conditions and manufacturer recommendations. Regular lubrication prevents friction, reduces wear, and dissipates heat.
  • Temperature Monitoring: Keep an eye on the operating temperature of the gearbox. Excessive heat can degrade the lubricant and damage components.
  • Cleanliness: Keep the gearbox and surrounding area clean from debris and contaminants. Regularly inspect and clean the gearbox exterior.
  • Seal Inspection: Check for any leaks or damage to seals and gaskets. Replace them promptly to prevent lubricant leaks and contamination.
  • Alignment: Ensure proper alignment between the worm and worm wheel. Misalignment can lead to increased wear and reduced efficiency.
  • Torque Monitoring: Monitor the torque levels during operation. Excessive torque can cause overloading and premature wear.
  • Regular Inspections: Periodically inspect all components for signs of wear, damage, or unusual noise. Replace worn or damaged parts promptly.
  • Proper Usage: Operate the gearbox within its specified limits, including load, speed, and temperature. Avoid overloading or sudden changes in operating conditions.
  • Expert Maintenance: If major maintenance or repairs are needed, consult the manufacturer’s guidelines or seek the assistance of qualified technicians.

By following these maintenance tips and adhering to the manufacturer’s recommendations, you can extend the lifespan of your worm gearbox and ensure its optimal performance over time.

worm gearbox

Does a Worm Reducer Require Frequent Maintenance?

Worm reducers generally require less frequent maintenance compared to some other types of gearboxes due to their design and operating characteristics. However, maintenance is still essential to ensure optimal performance and longevity. Here are some key points to consider:

  • Lubrication: Proper lubrication is crucial for worm gearboxes. Regularly check the lubricant level and quality to prevent wear and overheating. Lubricant should be changed as recommended by the manufacturer.
  • Inspections: Periodically inspect the gearbox for signs of wear, damage, or oil leaks. Check for any unusual noises, vibrations, or changes in performance that could indicate a problem.
  • Tightening and Alignment: Check and tighten any loose fasteners and ensure that the gearbox is properly aligned. Misalignment can lead to increased wear and reduced efficiency.
  • Seal Maintenance: Inspect and maintain seals to prevent oil leakage and contaminants from entering the gearbox.
  • Cleaning: Keep the gearbox clean from debris and contaminants that could affect its performance. Regular cleaning can prevent premature wear and damage.
  • Load and Speed: Ensure that the gearbox is operating within its rated load and speed limits. Exceeding these limits can lead to accelerated wear and potential failure.
  • Environmental Conditions: Consider the operating environment of the gearbox. Extreme temperatures, humidity, and other factors can impact the gearbox’s performance and longevity.

While worm gearboxes are known for their durability and self-locking feature, neglecting maintenance can lead to premature wear, reduced efficiency, and potential breakdowns. Following the manufacturer’s recommendations for maintenance intervals and procedures is essential to keep the worm reducer in optimal condition.

worm gearbox

Advantages of Using a Worm Reducer in Mechanical Systems

Worm reducers offer several advantages that make them suitable for various mechanical systems:

  • High Gear Reduction Ratio: Worm gearboxes provide significant speed reduction, making them ideal for applications that require a high gear reduction ratio without the need for multiple gears.
  • Compact Design: Worm reducers have a compact and space-saving design, allowing them to be used in applications with limited space.
  • Self-Locking: Worm gearboxes exhibit self-locking properties, which means that the worm screw can prevent the worm wheel from reversing its motion. This is beneficial for applications where the gearbox needs to hold a load in place without external braking mechanisms.
  • Smooth and Quiet Operation: Worm gearboxes operate with a sliding motion between the teeth, resulting in smoother and quieter operation compared to some other types of gearboxes.
  • High Torque Transmission: Worm gearboxes can transmit high torque levels, making them suitable for applications that require powerful torque output.
  • Heat Dissipation: The sliding action between the worm screw and the worm wheel contributes to heat dissipation, which can be advantageous in applications that generate heat during operation.
  • Stable Performance: Worm reducers offer stable and reliable performance, making them suitable for continuous operation in various industrial and mechanical systems.

Despite these advantages, it’s important to note that worm gearboxes also have limitations, such as lower efficiency compared to other gear types due to the sliding motion and potential for higher heat generation. Therefore, selecting the appropriate type of gearbox depends on the specific requirements and constraints of the application.

China best Iron Aluminum Shell Worm Gearbox with Output Hollow Shaft Speed Reducer   gearbox and motor	China best Iron Aluminum Shell Worm Gearbox with Output Hollow Shaft Speed Reducer   gearbox and motor
editor by CX 2024-03-26

China Hot selling 80 Ratio Worm Gear Aluminum Reducer Nmrv075 Hollow Shaft Gearbox comer gearbox

Product Description

 

Dr Drawing awing

Drawing

There are many types of worm gearboxes. If you have any questions about the selection, please contact us first.

Band name

CHINAMFG

Model No.:

NMRV571

Ratio:

5,7.5,10,15,20,25,30,40,50, 60

Color:

Blue/Silver Grey Or On Customer Request

Material:

Housing: Size 25-110 is Aluminum Alloy, Size 110-150 is Cast-Iron

Worm Wheel: ZCuSn10Pb1

Worm:20Cr

Pinion:Tin Bronze

Output Shaft: Steel-45#

Matching motor

15w,20w,25w,30w,40w,60W,90W,120W

Usages:

Industrial Machine: Food Stuff, Ceramics, Chemical, Packing, Dyeing,Wood working, Glass.

IEC Flange:

IEC Standard Flange Or On Customer Request

Structure: base-mounted, input shaft, input flange, additional single or double output shafts(As Customer Request).

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Application: Industrial
Speed: Low Speed
Number of Stator: Three-Phase
Function: Driving, Control
Casing Protection: Protection Type
Number of Poles: 4
Samples:
US$ 200/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

worm gearbox

What are the Noise Levels Associated with Worm Gearboxes?

The noise levels associated with worm gearboxes can vary depending on several factors, including the design, quality, operating conditions, and maintenance of the gearbox. Here are some key points to consider:

  • Design and Quality: Well-designed and high-quality worm gearboxes tend to produce lower noise levels. Factors such as gear tooth profile, precision manufacturing, and proper alignment can contribute to reduced noise.
  • Gear Engagement: The way the worm and worm wheel engage and mesh with each other can impact noise levels. Proper tooth contact and alignment can help minimize noise during operation.
  • Lubrication: Inadequate or improper lubrication can lead to increased friction and wear, resulting in higher noise levels. Using the recommended lubricant and maintaining proper lubrication levels are important for noise reduction.
  • Operating Conditions: Operating the gearbox within its specified load and speed limits can help prevent excessive noise generation. Overloading or operating at high speeds beyond the gearbox’s capabilities can lead to increased noise.
  • Backlash: Excessive backlash or play between the gear teeth can lead to impact noise as the teeth engage. Proper backlash adjustment can help mitigate this issue.
  • Maintenance: Regular maintenance, including gear inspection, lubrication checks, and addressing any wear or damage, can help keep noise levels in check.

It’s important to note that while worm gearboxes can produce some noise due to the nature of gear meshing, proper design, maintenance, and operation can significantly reduce noise levels. If noise is a concern for your application, consulting with gearbox manufacturers and experts can provide insights into selecting the right gearbox type and implementing measures to minimize noise.

worm gearbox

How to Calculate the Input and Output Speeds of a Worm Gearbox?

Calculating the input and output speeds of a worm gearbox involves understanding the gear ratio and the principles of gear reduction. Here’s how you can calculate these speeds:

  • Input Speed: The input speed (N1) is the speed of the driving gear, which is the worm gear in this case. It is usually provided by the manufacturer or can be measured directly.
  • Output Speed: The output speed (N2) is the speed of the driven gear, which is the worm wheel. To calculate the output speed, use the formula:

    N2 = N1 / (Z1 * i)

Where:
N2 = Output speed (rpm)
N1 = Input speed (rpm)
Z1 = Number of teeth on the worm gear
i = Gear ratio (ratio of the number of teeth on the worm gear to the number of threads on the worm)

It’s important to note that worm gearboxes are designed for gear reduction, which means that the output speed is lower than the input speed. Additionally, the efficiency of the gearbox, friction, and other factors can affect the actual output speed. Calculating the input and output speeds is crucial for understanding the performance and capabilities of the worm gearbox in a specific application.

worm gearbox

What is a Worm Gearbox and How Does It Work?

A worm gearbox, also known as a worm gear reducer, is a mechanical device used to transmit rotational motion and torque between non-parallel shafts. It consists of a worm screw and a worm wheel, both of which have helical teeth. The worm screw resembles a threaded cylinder, while the worm wheel is a gear with teeth that mesh with the worm screw.

The working principle of a worm gearbox involves the interaction between the worm screw and the worm wheel. When the worm screw is rotated, its helical teeth engage with the teeth of the worm wheel. As the worm screw rotates, it translates the rotational motion into a perpendicular motion, causing the worm wheel to rotate. This perpendicular motion allows the worm gearbox to achieve a high gear reduction ratio, making it suitable for applications that require significant speed reduction.

One of the key features of a worm gearbox is its ability to provide a high gear reduction ratio in a compact design. However, due to the sliding nature of the meshing teeth, worm gearboxes may exhibit higher friction and lower efficiency compared to other types of gearboxes. Therefore, they are often used in applications where efficiency is not the primary concern but where high torque and speed reduction are essential, such as conveyor systems, elevators, automotive steering systems, and certain industrial machinery.

China Hot selling 80 Ratio Worm Gear Aluminum Reducer Nmrv075 Hollow Shaft Gearbox   comer gearbox	China Hot selling 80 Ratio Worm Gear Aluminum Reducer Nmrv075 Hollow Shaft Gearbox   comer gearbox
editor by CX 2024-01-05

China Guzuo Hot Sale Power Small NMRV 063 Worm Gear Speed Reducer For Aluminum Alloy Gearbox Belt Conveyor Hollow Output Shaft with Hot selling

Warranty: 1 a long time
Relevant Industries: Constructing Material Stores, Producing Plant, Machinery Fix Stores, Meals & Beverage Factory, Farms, Retail, Printing Shops, Building works , Power & Mining, Foods & Beverage Outlets, Servo Motor
Excess weight (KG): 20 KG
Tailored support: OEM, ODM, OBM
Gearing Arrangement: Planetary
Output Torque: 25N.M
Enter Speed: 3Security grade IP65Lifetime20000hLubricating kindLife lubrication Support Associated Items About Us FAQ

Q1: What’re your primary items?A1: Higher Precision Planetary Gearbox Hollow Rotating Platform Precision Steering Box Worm Pace Reducer Worm Screw Jack R/K/F/S GearboxQ2: What industries are your gearboxes becoming utilised in?A2: Gearboxes are commonly used in the regions of robotics, textile, foodstuff processing, beverage, chemical industry, escalator, automatic storage tools, metallurgy, environmental safety, logistics, and so on.Q3: Can you offer you OEM or ODM provider?A3: Of course, we are a professional company so we can do customized orders.This autumn: How to pick a product?A4: We have one particular-1 provider team for design variety, and we can give CAD drawings and 3D types in 5 minutes with technological information of essential output torque, output speed and motor parameters etc. So just get in touch with us.Q5: What info shall we give just before putting a buy buy?A5: We comprehend your requirements from the adhering to information: a) Kind of the gearbox, ratio, enter and output type, enter flange, mounting position, and motor data and many others.b) Housing coloration.c) Purchase quantity.d) Other special demands.Q6: How long is the shipping time?A6: Most planetary gearboxes are in stock. 7 operating days for worm speed reducer and worm screw jack, 15 functioning times for R/K/F/S gearbox.

Worm gear reducer

A worm gear reducer is a gear reducer that uses a worm gear train to reduce the required force. Unlike traditional gear reducers, these units are small and require low horsepower ratings. This reduces their efficiency, but their low cost and compact design help make up for this shortcoming. However, these gear reducers have some drawbacks, including their tendency to lock up when reversing.
worm_reducer

high efficiency

High-efficiency worm reducers are ideal for applications where high performance, repeatability, and accuracy are critical. It consists of an input hypoid gear and an output hypoid bevel gear. The input worm rotates perpendicular to the output worm, so for every revolution of the input worm, the output gear makes one revolution. This arrangement reduces friction (another source of energy loss) in a high-efficiency worm gear to at least two arc minutes.
Compared with worm gear reducers, hypoid gearmotors offer several advantages, including lower operating costs and higher efficiency. For example, hypoid gear motors can transmit more torque even at high reduction ratios. Also, they are more efficient than worm gear reducers, which means they can produce the same output with a smaller motor.
In recent years, the efficiency of worm gear reducers has been dramatically improved. Manufacturers have made great strides in materials, design, and manufacturing. New designs, including dual-enveloping worm gear reducers, increase efficiency by 3 to 8 percent. These improvements were made possible through countless hours of testing and development. Worm gear reducers also offer lower initial costs and higher overload capability than competing systems.
Worm gear reducers are popular because they provide maximum reduction in a small package. Their compact size makes them ideal for low to medium-horsepower applications and they are reticent. They also offer higher torque output and better shock load tolerance. Finally, they are an economical option to reduce the device’s power requirements.

low noise

Low-noise worm gear reducers are designed to reduce noise in industrial applications. This type of reducer uses fewer bearings and can work in various mounting positions. Typically, a worm reducer is a single-stage unit with only one shaft and one gear. Since there is only one gear, the noise level of the worm gear reducer will be lower than other types.
A worm gear reducer can be integrated into the electric power steering system to reduce noise. Worm reducers can be made and from many different materials. The following three-stage process will explain the components of a low-noise worm reducer.
Worm gear reducers can be mounted at a 90-degree angle to the input worm shaft and are available with various types of hollow or solid output shafts. These reducers are especially beneficial for applications where noise reduction is essential. They also have fewer parts and are smaller than other types of reducers, making them easier to install.
Worm gear reducers are available from various manufacturers. Due to their widespread availability, gear manufacturers maintain extensive inventories of these reducers. The worm gear ratio is standard, and the size of the worm gear reducer is universal. Also, worm gear reducers do not need to be sized for a specific purpose, unlike other load interruptions.
worm_reducer

pocket

A worm gear reducer is a transmission mechanism with a compact structure, large transmission ratio, and self-locking function under certain conditions. The worm gear reducer series products are designed with American technology and have the characteristics of stable transmission, strong bearing capacity, low noise, and compact structure. In addition, these products can provide a wide range of power supplies. However, these worm reducers are prone to leaks, usually caused by design flaws.
Worm gear reducers are available in single-stage and double-stage. The first type consists of an oil tank that houses the worm gear and bearings. The second type uses a worm gear with a sleeve for the first worm gear.
When choosing a gear reducer, it is essential to choose a high-quality unit. Improper gear selection can cause rapid wear of the worm gear. While worm gear reducers are generally durable, their degree of wear depends on the selection and operating conditions. For example, overuse, improper assembly, or working in extreme conditions can lead to rapid wear.
Worm reducers reduce speed and torque. Worm gears can be used to reduce the speed of rotating machines or inertial systems. Worm gears are a type of bevel gear, and their meshing surfaces have great sliding force. Because of this, worm gears can carry more weight than spur gears. They are also harder to manufacture. However, the high-quality design of the worm gear makes it an excellent choice for applications requiring high torque and high-speed rotation.
Worm gears can be manufactured using three types of gears. For large reduction ratios, the input and output gears are irreversible. However, the worm reducer can be constructed with multiple helices. The multi-start worm drive also minimizes braking effects.

Self-locking function

The worm reducer is self-locking to prevent the load from being driven back to the ground. The self-locking function is achieved by a worm that meshes with the rack and pinion. When the load reaches the highest position, the reverse signal is disabled. The non-locking subsystem back-drives the load to its original position, while the self-locking subsystem remains in its uppermost position.
The self-locking function of the worm reducer is a valuable mechanical feature. It helps prevent backing and saves the cost of the braking system. Additionally, self-locking worm gears can be used to lift and hold loads.
The self-locking worm gear reducer prevents the drive shaft from driving backward. It works with the axial force of the worm gear. A worm reducer with a self-locking function is a very efficient machine tool.
Worm gear reducers can be made with two or four teeth. Single-ended worms have a single-tooth design, while double-ended worms have two threads on the cylindrical gear. A multi-boot worm can have up to four boots. Worm reducers can use a variety of gear ratios, but the main advantage is their compact design. It has a larger load capacity than a cross-shaft helical gear mechanism.
The self-locking function of the worm reducer can also be used for gear sets that are not necessarily parallel to the shaft. It also prevents backward travel and allows forward travel. The self-locking function is achieved by a ratchet cam arranged around the gear member. It also enables selective coupling and decoupling between gear members.
worm_reducer

high gear ratio

Worm reducers are an easy and inexpensive way to increase gear ratios. These units consist of two worm gears – an input worm gear and an output worm gear. The input worm rotates perpendicular to the output worm gear, which also rotates perpendicular to itself. For example, a 5:1 worm gearbox requires 5 revolutions per worm gear, while a 60:1 worm gearbox requires 60 revolutions. However, this arrangement is prone to inefficiency since the worm gear experiences only sliding friction, not rolling friction.
High-reduction applications require many input revolutions to rotate the output gear. Conversely, low input speed applications suffer from the same friction issues, albeit with a different amount of friction. Worms that spin at low speeds require more energy to maintain their movement. Worm reducers can be used in many types of systems, but only some are suitable for high-speed applications.
Worm gears are challenging to produce, but the envelope design is the best choice for applications requiring high precision, high efficiency, and minimal backlash. Envelope design involves modifying gear teeth and worm threads to improve surface contact. However, this type of worm gear is more expensive to manufacture.
Worm gear motors have lower initial meshing ratios than hypoid gear motors, which allows the use of smaller motors. So a 1 hp worm motor can achieve the same output as a 1/2 hp motor. A study by Nissei compared two different types of geared motors, comparing their power, torque, and gear ratio. The results show that the 1/2 HP hypoid gear motor is more efficient than the worm gear motor despite the same output.
Another advantage of the worm gear reducer is the low initial cost and high efficiency. It offers high ratios and high torque in a small package, making it ideal for low to medium-horsepower applications. Worm gear reducers are also more shock-resistant.
China Guzuo Hot Sale Power Small NMRV 063 Worm Gear Speed Reducer For Aluminum Alloy Gearbox Belt Conveyor Hollow Output Shaft     with Hot selling		China Guzuo Hot Sale Power Small NMRV 063 Worm Gear Speed Reducer For Aluminum Alloy Gearbox Belt Conveyor Hollow Output Shaft     with Hot selling
editor by czh

China Professional Saf…Series Flanged-Mounted with Hollow Shaft Helical Gear Units Speed Reducer with Hot selling

Solution Description

 

 

Item Description

-S Collection Helical gearbox
 

 

Item Attributes
1.Higher modular layout.
2.Built-in casting housing,compact dimension,large loading assistance, stable transmitting and low noise amount.
three.With the specific equipment geometry, it will get large torque, effectiveness and extended life circle.
four.It can attain the immediate combination for 2 sets of gearbox.
five.Higher performance and help save power.

six.Conserve value and low routine maintenance.

 

1. Technical data

two: Layout alternative
 

 

 

 

 

 

 

 

 

 

Organization Profile

Bode  was established in 2007, which is situated in HangZhou metropolis, ZHangZhoug province. As 1 specialist company and exporter, we have much more than 17 years’ expertise in R & D of worm reducer, equipment reducer, gearbox , AC motor and relative spare parts. We have factory with advanced creation and test equipment, the sturdy development of crew and generating capacity supply our buyers with substantial top quality merchandise. Our items widely served to numerous industries of Metallurgy, Substances, lifting, mining, Petroleum, textile, medicine, wood and many others. Main markets: China, Africa, Australia, Vietnam, Turkey, Japan, Korea, Philippines… Welcome to request us any concerns, excellent offer always for you for lengthy phrase company.

Q1: Are you trading company or manufacturer?
A: We are manufacturing unit.

Q2: What varieties of gearbox can you generate for us?
A: Main merchandise of our company: R, S, K, F sequence helical-tooth reducer, RV series worm gear reducer,H Sequence Parallel Shaft Helical Reduction Equipment Box

Q3: Can you make as per custom drawing?
A: Indeed, we provide customized service for consumers.

This fall: Can we purchase 1 computer of each and every item for high quality testing?
A: Of course, we are happy to accept demo order for good quality testing.

Q5: What details shall we give before positioning a acquire get?
A:  a) Type of the gearbox, ratio, enter and output sort, enter flange, mounting position, and motor informationetc.
     b) Housing colour.
     c) Purchase amount.
     d) Other special demands.

Q6: How long is your supply time?
A: Normally it is 5-10 times if the goods are in inventory. or it is 15-20 days if the items are not in stock.

Q7: What is your conditions of payment ?
A: 30% Advance payment by T/T following signing the contract.70% before shipping

If you are interested in our product, welcome to speak to with us.
Our crew will do our very best to meet your want 🙂 
 

 

Size 38 48 58 68 78 88 98
Structure BS   BSA   BSF   BSAF   BSAT   BSAZ
Input Power(kW) 0.18~0.75 0.18~1.5 0.18~3 0.25~5.5 0.55~7.5 0.75~15 1.5~22
Ratio 10.27~165.71 11.46~244.74 10.78~196.21 11.55~227.20 9.96~241.09 11.83~223.26 12.75~230.48
Permissible Torque(N.m) 90 170 300 520 1270 2280 4000
Weight(kg) 7 10 14 26 50 100 170

###

S series gear units are available in the following designs
S…Y… Foot-mounted parallel shaft helical gear units with solid shaft
SA…Y… Parallel shaft helical gear units with hollow shaft
SAZ…Y… Short-flange mounted parallel shaft helical gear units with hollow shaft
SF…Y… Flange-mounted parallel shaft helical gear units with solid shaft
SAT…Y… Flange-mounted parallel shaft helical gear units with hollow shaft
S(SF,SA,SAF,SAZ)S… Shaft input parallel shaft helical gear units
S(SF,SA,SAF,SAZ)…R…Y… Combinatorial parallel shaft helical gear units
S(SF,SA,SAF,SAZ)S…R… Shaft input combinatorial parallel shaft helical gear units

###

Housing material
Grey Cast iron
Housing hardness
HBS163~255
Gear material
20CrMnTi alloy steel
Surface hardness of gears
HRC58°~62 °
Gear core hardness
HRC33~48
Input / Output shaft material
40Cr alloy steel
Input / Output shaft hardness
HRC32~36
Machining precision of gears
accurate grinding, 6~5 Grade
Lubricating oil
GB L-CKC220-460, Shell Omala220-460
Heat treatment
tempering, cementiting, quenching, normalizing, etc.
Efficiency
94%~96% (depends on the transmission stage)
Noise (MAX)
60~68dB
Temp. rise (MAX)
40°C
Temp. rise (Oil)(MAX)
50°C
Vibration
≤20µm
Backlash
≤20Arcmin
Brand of bearings
China top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands requested, SKF, FAG, INA, NSK.
Brand of oil seal
NAK — Taiwan or other brands requested
Size 38 48 58 68 78 88 98
Structure BS   BSA   BSF   BSAF   BSAT   BSAZ
Input Power(kW) 0.18~0.75 0.18~1.5 0.18~3 0.25~5.5 0.55~7.5 0.75~15 1.5~22
Ratio 10.27~165.71 11.46~244.74 10.78~196.21 11.55~227.20 9.96~241.09 11.83~223.26 12.75~230.48
Permissible Torque(N.m) 90 170 300 520 1270 2280 4000
Weight(kg) 7 10 14 26 50 100 170

###

S series gear units are available in the following designs
S…Y… Foot-mounted parallel shaft helical gear units with solid shaft
SA…Y… Parallel shaft helical gear units with hollow shaft
SAZ…Y… Short-flange mounted parallel shaft helical gear units with hollow shaft
SF…Y… Flange-mounted parallel shaft helical gear units with solid shaft
SAT…Y… Flange-mounted parallel shaft helical gear units with hollow shaft
S(SF,SA,SAF,SAZ)S… Shaft input parallel shaft helical gear units
S(SF,SA,SAF,SAZ)…R…Y… Combinatorial parallel shaft helical gear units
S(SF,SA,SAF,SAZ)S…R… Shaft input combinatorial parallel shaft helical gear units

###

Housing material
Grey Cast iron
Housing hardness
HBS163~255
Gear material
20CrMnTi alloy steel
Surface hardness of gears
HRC58°~62 °
Gear core hardness
HRC33~48
Input / Output shaft material
40Cr alloy steel
Input / Output shaft hardness
HRC32~36
Machining precision of gears
accurate grinding, 6~5 Grade
Lubricating oil
GB L-CKC220-460, Shell Omala220-460
Heat treatment
tempering, cementiting, quenching, normalizing, etc.
Efficiency
94%~96% (depends on the transmission stage)
Noise (MAX)
60~68dB
Temp. rise (MAX)
40°C
Temp. rise (Oil)(MAX)
50°C
Vibration
≤20µm
Backlash
≤20Arcmin
Brand of bearings
China top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands requested, SKF, FAG, INA, NSK.
Brand of oil seal
NAK — Taiwan or other brands requested

What is a worm gear reducer?

A worm gear reducer is a mechanical device that uses a worm gear and a worm to reduce the speed of a rotating shaft. The gear reducer can increase the output torque of the engine according to the gear ratio. This type of gear reducer is characterized by its flexibility and compact size. It also increases the strength and efficiency of the drive.
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Hollow shaft worm gear reducer

The hollow shaft worm gear reducer is an additional output shaft connecting various motors and other gearboxes. They can be installed horizontally or vertically. Depending on size and scale, they can be used with gearboxes from 4GN to 5GX.
Worm gear reducers are usually used in combination with helical gear reducers. The latter is mounted on the input side of the worm gear reducer and is a great way to reduce the speed of high output motors. The gear reducer has high efficiency, low speed operation, low noise, low vibration and low energy consumption.
Worm gear reducers are made of hard steel or non-ferrous metals, increasing their efficiency. However, gears are not indestructible, and failure to keep running can cause the gear oil to rust or emulsify. This is due to moisture condensation that occurs during the operation and shutdown of the reducer. The assembly process and quality of the bearing are important factors to prevent condensation.
Hollow shaft worm gear reducers can be used in a variety of applications. They are commonly used in machine tools, variable speed drives and automotive applications. However, they are not suitable for continuous operation. If you plan to use a hollow shaft worm gear reducer, be sure to choose the correct one according to your requirements.

Double throat worm gear

Worm gear reducers use a worm gear as the input gear. An electric motor or sprocket drives the worm, which is supported by anti-friction roller bearings. Worm gears are prone to wear due to the high friction in the gear teeth. This leads to corrosion of the confinement surfaces of the gears.
The pitch diameter and working depth of the worm gear are important. The pitch circle diameter is the diameter of the imaginary circle in which the worm and the gear mesh. Working depth is the maximum amount of worm thread that extends into the backlash. Throat diameter is the diameter of the circle at the lowest point of the worm gear face.
When the friction angle between the worm and the gear exceeds the lead angle of the worm, the worm gear is self-locking. This feature is useful for lifting equipment, but may be detrimental to systems that require reverse sensitivity. In these systems, the self-locking ability of the gears is a key limitation.
The double throat worm gear provides the tightest connection between the worm and the gear. The worm gear must be installed correctly to ensure maximum efficiency. One way to install the worm gear assembly is through a keyway. The keyway prevents the shaft from rotating, which is critical for transmitting torque. Then attach the gear to the hub using the set screw.
The axial and circumferential pitch of the worm gear should match the pitch diameter of the larger gear. Single-throat worm gears are single-threaded, and double-throat worm gears are double-throat. A single thread design advances one tooth, while a double thread design advances two teeth. The number of threads should match the number of mating gears.
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Self-locking function

One of the most prominent features of a worm reducer is its self-locking function, which prevents the input and output shafts from being interchanged. The self-locking function is ideal for industrial applications where large gear reduction ratios are required without enlarging the gear box.
The self-locking function of a worm reducer can be achieved by choosing the right type of worm gear. However, it should be noted that this feature is not available in all types of worm gear reducers. Worm gears are self-locking only when a specific speed ratio is reached. When the speed ratio is too small, the self-locking function will not work effectively.
Self-locking status of a worm reducer is determined by the lead, pressure, and coefficient of friction. In the early twentieth century, cars had a tendency to pull the steering toward the side with a flat tire. A worm drive reduced this tendency by reducing frictional forces and transmitting steering force to the wheel, which aids in steering and reduces wear and tear.
A self-locking worm reducer is a simple-machine with low mechanical efficiency. It is self-locking when the work at one end is greater than the work at the other. If the mechanical efficiency of a worm reducer is less than 50%, the friction will result in losses. In addition, the self-locking function is not applicable when the drive is reversed. This characteristic makes self-locking worm gears ideal for hoisting and lowering applications.
Another feature of a worm reducer is its ability to reduce axially. Worm gears can be double-lead or single-lead, and it is possible to adjust their backlash to compensate for tooth wear.

Heat generated by worm gears

Worm gears generate considerable amounts of heat. It is essential to reduce this heat to improve the performance of the gears. This heat can be mitigated by designing the worms with smoother surfaces. In general, the speed at which worm gears mesh should be in the range of 20 to 24 rms.
There are many approaches for calculating worm gear efficiency. However, no other approach uses an automatic approach to building the thermal network. The other methods either abstractly investigate the gearbox as an isothermal system or build the TNM statically. This paper describes a new method for automatically calculating heat balance and efficiency for worm gears.
Heat generated by worm gears is a significant source of power loss. Worm gears are typically characterized by high sliding speeds in their tooth contacts, which causes high frictional heat and increased thermal stresses. As a result, accurate calculations are necessary to ensure optimal operation. In order to determine the efficiency of a gearbox system, manufacturers often use the simulation program WTplus to calculate heat loss and efficiency. The heat balance calculation is achieved by adding the no-load and load-dependent power losses of the gearbox.
Worm gears require a special type of lubricant. A synthetic oil that is non-magnetic and has a low friction coefficient is used. However, the oil is only one of the options for lubricating worm gears. In order to extend the life of worm gears, you should also consider adding a natural additive to the lubricant.
Worm gears can have a very high reduction ratio. They can achieve massive reductions with little effort, compared to conventional gearsets which require multiple reductions. Worm gears also have fewer moving parts and places for failure than conventional gears. One disadvantage of worm gears is that they are not reversible, which limits their efficiency.
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Size of worm gear reducer

Worm gear reducers can be used to decrease the speed of a rotating shaft. They are usually designed with two shafts at right angles. The worm wheel acts as both the pinion and rack. The central cross section forms the boundary between the advancing and receding sides of the worm gear.
The output gear of a worm gear reducer has a small diameter compared to the input gear. This allows for low-speed operation while producing a high-torque output. This makes worm gear reducers great for space-saving applications. They also have low initial costs.
Worm gear reducers are one of the most popular types of speed reducers. They can be small and powerful and are often used in power transmission systems. These units can be used in elevators, conveyor belts, security gates, and medical equipment. Worm gearing is often found in small and large sized machines.
Worm gears can also be adjusted. A dual-lead worm gear has a different lead on the left and right tooth surfaces. This allows for axial movement of the worm and can also be adjusted to reduce backlash. A backlash adjustment may be necessary as the worm wears down. In some cases, this backlash can be adjusted by adjusting the center distance between the worm gear.
The size of worm gear reducer depends on its function. For example, if the worm gear is used to reduce the speed of an automobile, it should be a model that can be installed in a small car.