Tag Archives: double shaft

China supplier R Type Gear Units Reducer CZPT Shaft double reduction helical gearbox

Product Description

Technical Parameter 

Housing material HT200 high-strength cast iron(EWR37, EWR47, EWR57, EWR67, EWR77, EWR87)
Housing material HT250 High strength cast iron(EWR97, EWR 107, EWR137, EWR147, EWR167)
Gear material 20CrMnTi
Gear Surface&hardness HRC58°-62°
Gear core hardness HRC33°-78°
Input/Output shaft material 40Cr
Gear Machining precision Accurate grinding 6-5 grade
Heat treatment Carburizing, Quenching etc
Efficiency Up to 92%
Noise(Max) 60-67dB
Installation type Foot mounted, flange mounted
Output type Solid shaft
Bearing brand NSK, SKF, HRB, ZWZ etc
Oil seal brand NAK, KSK etc
Lubricant VG220
Motor IP55, F class
Motor shaft 40Cr, Carburizing, Quenching etc
Warranty 12months
Color Blue, Grey

Model EWR37 EWR47 EWR57 EWR67 EWR77 EWR87 EWR97 EWR107 EWR137 EWR147 EWR167
Weight 9 14 24 27 33 60 110 150 255 365 615
Shaft Ф 25mm 30mm 35mm 35mm 40mm 50mm 60mm 70mm 90mm 110mm 120mm

Packing

Features
♦Specially designed for agitator. 
♦Compact structure, Integrated casting housing, low noise and long service life. 
♦High efficiency and low maintenance. 

Design
♦ Reducing Ratio: 2 stage 5~24.8, 3 stage 27.2~264, EWR/EWR combination type can be up to 18125. 
♦ Mounting Type: Foot mounted, Flange mounted. 
♦ Output Shaft: CZPT shaft. 
♦ Efficiency: Two-stage96%, three-stage 94%, and combination of EWR/EWR85%. 

Technical Data
♦Size EWR37-EWR167
♦ Output Torque 130~18000N. M
♦ Motor Power 0.18~160kw
♦ Ratio 5~264(imax: 18125)

Industrial Application
♦Power Plant Equipment
♦Metallurgical Industry
♦Metal Forming Machinery
♦Petrochemical Industry
♦Mining Machine
♦Hoisting Machinery
♦Construction Industry
♦Environmental Protection Industry
♦Cable Industry
♦Food Machinery

Certificates
Passed ” ISO 9001 International Quality System Certificate”, “Europe CE Certificate”, ” Swiss SGS Certificate”, “High-tech enterprise certificate of ZheJiang city”, “Excellent performance management enterprise of ZheJiang city”, etc. 

FAQ
1. Q: Can you make as per custom drawing? 
A: Yes, we offer customized service for customers. 

2. Q: Are you a factory or trading company? 
A. We are manufacturer in ZheJiang China. 

3. Q: What’s your MOQ? 
A: One piece. 

4. Q: What’s your production time? 
A: 7-15 working days after receiving payment. 

5. Q: What’s your payment terms? 
A: T/T, 30% payment in advance, 70% balance payment should be paid before shipping. 

6. Q: What’s your package? 
A: In wooden box packaging. 

Company information
ZheJiang CZPT Gear Reducer Co., Ltd. We are professional manufacturer of the helical gear reducers and specialize in the gear reducers area in China for 20 years. CZPT has excellent R&D team, top-ranking production and test equipment. So we have the strong power in the developing and manufacturing the standards type as well as the customized type gear reducer for our customers. 

Application: Machinery
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Layout: Coaxial
Gear Shape: Helical Gear
Step: Three-Step
Customization:
Available

|

Customized Request

helical gearbox

NVH Characteristics of Helical Gearbox

Typically, a helical gearbox is used in the transmission of torque, speed, or both. Its primary function is to rotate a circular machine part while simultaneously meshing with other toothed parts. It operates on the same principle as a lever.

Typical applications

Typical applications of helical gearboxes include conveyors, blowers, and elevators. They are also used in the construction of plastics and rubber. Their basic benefits include reduced vibration, lower noise levels, and high load carrying capacity. They are also known to be more durable and quiet than spur gears.
There are several factors that should be taken into consideration when choosing the right gear set for a particular application. These include power requirements, torque requirements, and the environment in which it will operate. Also, bearings and lubricants will need to be considered.
Helical gears are used for heavy load applications, as they provide a high load-carrying capacity. They also are less expensive than spur gears. However, their efficiency is lower than spur gears. This is due to the fact that helical gears have larger teeth. They also have a lower dynamic load than spur gears. This reduces wear and tear on the gears.
Helical gears are also used in high-speed applications. They can also be used with non-parallel shafts. They are typically chosen over spur gears for non-parallel applications. However, helical gears are prone to misalignment due to axial thrust. This can be corrected by adjusting the bearing position.
Helical gears can also be used as power transmitting gears. They are commonly used in transmissions in the automotive industry. They are also used in a wide range of other industrial applications. These include blowers, feeders, coolers, and conveyors. They can also be used in the food and oil industries.
The most common types of helical gearboxes are single and double helical gearboxes. Single helical gears have one helical section that is parallel to the axis. Those with a circular arc curved tooth are also available.

NVH characteristics

NVH characteristics of helical gearbox are a major consideration in the development of new driveline products. NVH can be quantified using wavelet analysis, order analysis and statistical energy analysis. These techniques are typically used in the frequency domain, but can also be used in the real time domain.
The most basic NVH method uses a modal analysis to quantify the transmission noise. Simplified models use sinusoidal stiffness variations, but can also be used to study special effects.
One of the most important aspects of NVH is the integrity of the signal chain. The signal chain is affected by the gear meshing impact and the main transmission housing excitation. The first step in quantifying NVH is to establish a signal chain. This can be done by comparing the signals that are recorded on an analog to digital converter or hard disk. Then, using fast Fourier transforms, signals are converted from the time domain into the frequency domain.
For NVH analysis, it is important to obtain a representative prototype of the production vehicle. This is necessary early in the design phase, as changes to the final product often require substantial design modifications.
For helical gearboxes, the main benefit of reverse module configuration is that the radial type gearbox is more economical to produce. The radial type gearbox uses the same tooth-cutting tools as a spur gear, but can be produced more economically.
The basic characteristics of helical gears are that they have more surface contact and are more powerful in their carrying capacity. Because of this, the helical gearbox is typically used for high-load applications. However, helical gearboxes tend to produce lower efficiencies than spur types.
Thermal deformation of bearings can also change NVH characteristics of a helical gear transmission system. In this study, the effects of bearing temperature rise on the nonlinear dynamic characteristics of a helical gear system are investigated.helical gearbox

Helix

Compared to conventional gears, helical gears have more surface contact and produce less noise. These gears are a great choice for home and light industrial applications, especially where high-efficiency is required.
Helical gears produce axial thrust force through a special lubricant. They are used in different industries, such as automotive, oil, food, plastic, and textile. They are also used in blowers, feeders, and geared motors.
In helical gears, there is a special tooth at an angle to the axis of rotation. This tooth retains contact while the gear rotates into full engagement. Typically, the angle between the helix and the axis of rotation is 15 to 30 degrees. This angle is important for determining the number of teeth.
Compared to a straight cut gear, a helical gear has a higher power to weight ratio. This means that the helical gear can accommodate a higher load.
Helical gears are typically paired, with each gear containing a v-shaped tooth. The v-shaped tooth is designed to allow for a greater contact ratio, while maintaining an acceptable minimum amount of bottom clearance. However, the tooth tip may fracture if it is too thin.
A mathematical definition of the helix angle is important for the design of a helical gear. The helix angle is defined in the section on geometry of helical gear teeth.
The angle between the helix and the axial axis of rotation is used to calculate the axial contact ratio of a gear. This ratio is defined as the sum of the total number of contact lines, or teeth. If the overlap ratio of a gear pair is zero, then the axial contact ratio is also zero.
A helical gearbox can be a highly efficient transmission system, but may suffer from transmission error. This is the result of the axial thrust force, which is dissipated when it enters contact with an opposing tooth. To minimize the amount of power loss in a helical gear box, several approaches have been developed.

Transverse and normal planes of the teeth

Generally, helical gear teeth have two planes: the transverse and normal planes. The normal plane is perpendicular to the pitch plane. The transverse plane is perpendicular to the axial plane.
When a tooth is in contact, the load is normal to the surface at the contact point. This is known as the pressure angle. This angle is a function of the tooth’s radial position on the shaft axis. The angle can also be used to describe the shape of a tooth.
In helical gears, the normal pressure angle is the angle of the load line into the plane normal to the tooth axis. It is important to know the pressure angle when calculating the forces in a helical gear pair. This angle is usually between 15 and 30 degrees.
The helical gearbox is the most widely used gearbox. It consists of a set of helical gears connected by parallel shafts. It is also used in blowers, textile, sugar, and marine applications. It has a higher contact level and less vibration than conventional gears.
Helical gears can be used in feeders, blowers, and rubber and plastic applications. They are quieter than conventional gears, which is especially important in the food industry. They also transfer larger loads. They are also durable and can be used in blowers.
Helical gears have a slanted tooth trace. They are less noisy than conventional gears, which makes them ideal for marine applications. They also transmit rotation smoothly. They have an effective axial thrust force and transmit less vibration. They are used in many industrial applications, including the oil industry and the food industry.
Helical gears on non-parallel shafts have two major circles: the pitch circle and the root diameter. These circles can be different, so different tooth shapes can be used in the radial module system.helical gearbox

Impact of external thrust on helical gears

Considering that gearboxes are often a key component of power transmissions, the impact of external thrust on gearboxes has been investigated. This paper presents a theoretical model, accompanied by experimental measurements. In particular, this paper focuses on the effects of the thrust collar on the transfer path.
The thrust collar has been successfully proven to reduce the axial thrust between helical gears. It also reduces the acoustic impact of the gearbox by attenuating the radiated sound power. This has been accomplished by incorporating a sound damping mechanism that includes Rayleigh damping. The oil film that surrounds the thrust collar is another damping element.
In addition to reducing gearbox vibration, the oil film damping may attenuate coupled degrees of freedom. To test this, a theoretical model of a gearbox equipped with a thrust collar was developed. This model was then used in a gearbox dynamics simulation model to analyze the effects of the thrust collar on the transferpath.
The first partial model shows how the oil film and the radiated sound power could alter the acoustic performance of a gearbox. In particular, the sound pressure levels of exciting frequencies are compared at the top cover of the gearbox in the vertical direction. This was done using an accelerometer.
The second partial model is a simulation of airborne sound from the gearbox housing. This is done using the compound of the motor excitation and the meshing excitation. This is done by measuring the frequency of radiated sound at four different combinations of torque and speed.
In addition, the helical gear has been sliced into an arbitrary number of cross sections. Each gear is then mounted on a shaft, which rotates with a different timing. The helical gear is compared to a corresponding spur gear for comparison. The spur gear has a higher root stress, but its relative contact stress isn’t nearly as big as that of the helical gear.
China supplier R Type Gear Units Reducer CZPT Shaft   double reduction helical gearboxChina supplier R Type Gear Units Reducer CZPT Shaft   double reduction helical gearbox
editor by CX 2023-11-15

China ATA Shaft Mounted Helical Gear Box for Conveyor helical double gearbox

Merchandise Description

ATA Shaft Mounted Helical Gear Box for Conveyor

ATA series shaft mounted gearbox(speed reducer) with helical hardened gears has the characteristics of substantial carrying capability, clean transmission, light excess weight, low energy intake and so on. Input shaft of ATA velocity reducer is connected with gear motor by belt pulley, hollow output shaft is joined with a key. It can be replaced by electric powered drum as energy for belt conveyors and lifting equipments. ATA collection shaft mounted gearbox could be connected with back again-stop to steer clear of the working equipment back skating, and conveniently mounted by tie rod. ATA series shaft mounted velocity reducer is widely used in the mining equipments, concrete mixing batching plant, stone crushers, sand creating manufacturing line and other belt conveyors, mechanical transmission places.
Mechanical belt conveyors generate technique is composed of ATA shaft mounted speed reducer, torque arm, pulleys and gear motors, whose power transmission from the gear motor to the gearbox by way of the pulley, and then pace reducer handed to the drive pulley via the hollow output shaft and the gearbox is fastened by torque arm, anti-slip unit can be configured. The system is practical to put in, use and maintain.

The features of ATA shaft mounted gearbox:
Mounting Sort: Tie rod Hanging shaft mounted
Output Shaft: One essential hollow shaft, each design can pick 3 hollow diameter at most.
Gearbox Housing: Hard Iron Steel, can be utilized outside the house.
Anti-slip unit: Can go well with for any product, It is very convenient to be mounted.

The purposes of ATA shaft mounted gearbox:
Agriculture, commerce, telecommunications market, the food sector, tobacco business, vehicle sector, cement business, mining sector, mixing station belt conveyor program.

The maintenance of ATA shaft mounted gearbox:
one. Ahead of starting the reducer need to be crammed of N159 or N220 extreme stress industrial equipment oils, until the gearbox oil shows an intermediate placement
two. Right after 3 months working, the gearbox require to modify oil, consideration it have to be particles inside the device rinse ahead of introducing new oil.
three. At the reducer hollow shaft finishes and travel pulley stop gland plate should mounted with locking screws.
four. The reducer pulley and the motor pulley have to be parallel when they are mounted and the belt tightness ought to be moderate.

The designs of ATA shafted mounted gearbox:
ATA35 ATA40 ATA45 ATA50 ATA60 ATA70 ATA80 ATA1

If you have any demand from customers for our items please come to feel cost-free to contact me. 


/ Piece
|
1 Piece

(Min. Order)

###

Application: Motorcycle, Industry
Function: Speed Changing, Speed Reduction
Layout: Parallel
Hardness: Hardened
Installation: Torque Arm Type
Type: Circular Gear

###

Customization:
Available

|


###

Rated Power Intput Speed Output Speed Ratio Installation Form
1.1~193KW 500~1400r/min 25~300r/min IN=5.0…31.5 Shaft mounted

###

Model ATA30 ATA35 ATA40 ATA45 ATA50 ATA60 ATA70 ATA80 ATA100 ATA125
Permitted Torque 180Nm 420Nm 9501Nm 1400Nm 2300Nm 3600Nm 5100Nm 7000Nm 11000Nm 17000Nm

/ Piece
|
1 Piece

(Min. Order)

###

Application: Motorcycle, Industry
Function: Speed Changing, Speed Reduction
Layout: Parallel
Hardness: Hardened
Installation: Torque Arm Type
Type: Circular Gear

###

Customization:
Available

|


###

Rated Power Intput Speed Output Speed Ratio Installation Form
1.1~193KW 500~1400r/min 25~300r/min IN=5.0…31.5 Shaft mounted

###

Model ATA30 ATA35 ATA40 ATA45 ATA50 ATA60 ATA70 ATA80 ATA100 ATA125
Permitted Torque 180Nm 420Nm 9501Nm 1400Nm 2300Nm 3600Nm 5100Nm 7000Nm 11000Nm 17000Nm

What Is a Helical Gearbox?

Basically, a gearbox is a rotating circular machine part that consists of toothed components, which mesh together. Its function is to transfer speed and torque to other parts of the machine. It is also similar to a lever, and operates on the same principle.helical gearbox

Double helical gears

Having a helical gearbox has many advantages, including higher efficiency, high strength, and a superior gear system. However, it has its drawbacks. One of these drawbacks is the axial thrust. Axial thrust is not a problem with single helical gears, but it is a problem with double helical gears.
In double helical gears, there are two sets of teeth that are arranged in a V-shape. In one set of teeth, there is a groove that enables the axial force to be cancelled out. The groove eliminates the need for thrust bearings and allows for efficient handling of high capacity power transmission.
Aside from the axial thrust, there are also issues with face contact. Asymmetric load sharing and oscillation put substantial alternating loads on the shaft bearings. These alternating loads can lead to early bearing failure.
Fortunately, helical gears are smoother than spur gears, which means they can withstand more load. They also have greater pitch circle diameter than spur gears. However, they are limited in their scope. The pitch error distribution on the helical gears is typically limited to 50 mm peak-to-peak amplitude. It is important to control the phase difference of oncoming gears with high accuracy.
Typically, the helical gears that are used in a gear box are assembled from the same module. This allows for interchangeability of components and economical construction. A normal module set can use the same tooth-cutting tools that are used for spur gears.
Double helical gears are used in power transmission in fluid pumps and gas turbines. They are also commonly used in planetary reduction gear boxes for engines in civil aviation.
Generally, double helical gears are larger than single helical gears. They are typically generated from a special generator. They are also more expensive.
However, manufacturers are looking to find gears that are more convenient to use. One solution is to manufacture double helical gears on a multi-tasking machine tool. This allows the gear to be machined in complicated shapes.
The multi-tasking machine tool can also modify the tooth surface. This is useful for 3D printing helical gears with a high level of accuracy.helical gearbox

Crossed-axis helical gears

Several factors affect the performance of crossed-axis helical gears. One of the important factors is the position of the gears on the cross shaft. The gears will not perform properly if they are not oriented in a different direction.
Crossed-axis helical gears have a special situation, in which they will not function properly if the gears are oriented in the same direction. This is especially true for automobile oil pump/distribution shafts. Depending on the situation, gears will operate as a normal helical gear or as a spur gear.
Compared to spur gears, crossed-axis helical gears have relatively higher capacity. However, the transverse contact ratio of these gears is reduced. This decrease is dependent on the pressure angle. The pressure angle affects the curvature radii of the teeth. In addition, the length of the contact line is reduced. This shortens the efficiency of the gear.
Helix angle of crossed-axis helical gears is 45 degrees. It may be a left-handed or a right-handed gear. The pitch circle diameter of a helical gear may be big compared to that of a spur gear. This is due to the fact that the gears are cut at an angle to the shaft.
In the axial direction, the meshing of helical gears is very similar to spur gears. However, there are a few design rules to optimize these gears.
The first rule is that the gears must be staggered in opposite directions. If the gears are not staggered, the contact lines cannot be changed.
The second rule states that the pitch of a helical gear is dependent on its helix angle. It is possible to calculate the pitch circle of a helical gear, by integrating along the face width. In addition, the length of the contact lines decreases as the pressure angle increases. However, this decrease is not as large as that of a spur gear.

Right angle helical gears

Choosing a right angle helical gearbox can be difficult. With so many types, sizes, and configurations to choose from, it can be difficult to figure out which one is right for your application. The key to choosing the right gearbox is understanding your application and what factors are most important to you.
For example, if you are looking for a gearbox that can be used in a high-speed, high-torque application, the most important consideration is the efficiency of the product. Right-angle gearboxes are compact and easy to maintain, making them ideal for high-torque applications.
Some applications that require high-torque gears include pulp and paper manufacturing, food processing, mining, and car washes. Some of the advantages of right angle gears include high efficiency, low maintenance, and low noise. If you are in the market for a right angle helical gearbox, make sure to select a supplier that can provide you with a wide range of options.
Right-angle helical gearboxes come in several different bevel configurations. Spiral bevel gears require precision and are difficult to manufacture. However, they can be used interchangeably. Spiral miter gears are designed to rotate in the same direction as the input shaft, which helps ensure a smooth, direct transfer of power.
If you are considering a helical gearbox for a high-speed application, you will need to know your preferred input/output ratio. The standard ratios are 1:1 and 2:1. If you need a step-up ratio, you can install an additional output shaft opposite the input shaft.
Other benefits include lower running noise, superior strength, and durability. Because they are made of larger teeth, helical gears are less likely to wear out. Also, helical gears provide higher power carrying capacity.
To determine which type of right angle gearbox is best suited for your application, you should discuss your needs with your supplier. They should be able to offer a wide range of options, including custom solutions. They should also provide you with a list of past clients and online reviews.
To find a right angle helical gearbox that can meet your needs, it’s important to understand the various design features. For example, you should make sure that your gearbox has a self-locking capability, which means that the load cannot drive the worm. Having a self-locking gearbox also means that you do not need to install a braking system.helical gearbox

Spiral teeth

Using helical gearboxes to drive a motor car or truck is an efficient method of power transmission. However, the efficiency of this method depends on the helix angle of the gear. The helix angle is the angle that the gear teeth are cut at.
Helical gearboxes may be of different helix angles, depending on the specific gear set. The helix angle can vary between 15 and 30 degrees. This is important because the helix angle has a significant effect on the position of tooth contact. If the contact is not in a proper position, then there will be a large amount of vibration. This will affect the speed of the gear.
Helical gearboxes can be of two types: crossed axis and parallel axis. Crossed axis gears are usually used to connect parallel shafts. They have the same center gap as spur gears. On the other hand, parallel axis gears are usually used to drive a motor. The difference between the two types of gearboxes is their design and arrangement.
In addition to the helix angle, the gears may have different fillet, teeth, and radius. This means that the gear will have different NVH characteristics. In addition, there are different types of spiral teeth that may be used in the gearbox.
Hypoid gears are also similar to spiral bevel gears, but they differ in that the axes of the gear shaft do not intersect the axis of the hypoid gear. The hypoid gear exerts a very high thrust load on the bearings.
When compared to a straight bevel gear, the hypoid gear experience a smoother, less noisy operation. They also produce less shock loading.
Spiral bevel gears are also designed to produce less vibration. They are also more cost-effective. However, they require a larger diameter to transmit the same torque. This can lead to a reduced mechanical efficiency and lower fuel economy.
The best spiral bevel gears can carry a higher thrust load than straight teeth. This is why they are preferred for applications that require heavy load efficiency.
They are also appreciated for their NVH characteristics. They are also a quieter option for applications that require high speed. Helical gears can be used in many different industries. The food, automotive, and oil industries are examples of these types of gears.
China ATA Shaft Mounted Helical Gear Box for Conveyor     helical double gearboxChina ATA Shaft Mounted Helical Gear Box for Conveyor     helical double gearbox
editor by CX 2023-04-03