China Ewr Series Bevel Helical Foot Mounted Gearbox Reducer (EWR37-167) helical gearbox advantages

Item Description

Technological Parameter 

Housing content HT200 high-power cast iron(EWR37, EWR47, EWR57, EWR67, EWR77, EWR87)
Housing materials HT250 High power solid iron(EWR97, EWR 107, EWR137, EWR147, EWR167)
Gear substance 20CrMnTi
Gear Surface&hardness HRC58°-62°
Gear main hardness HRC33°-78°
Input/Output shaft substance 40Cr
Gear Machining precision Accurate grinding 6-5 quality
Warmth treatment Carburizing, Quenching and many others
Effectiveness Up to ninety two%
Noise(Max) 60-67dB
Set up variety Foot mounted, flange mounted
Output type Reliable shaft
Bearing model NSK, SKF, HRB, ZWZ etc
Oil seal brand name NAK, KSK etc
Lubricant VG220
Motor IP55, F class
Motor shaft 40Cr, Carburizing, Quenching and so forth
Warranty 12months
Colour Blue, Gray

Design EWR37 EWR47 EWR57 EWR67 EWR77 EWR87 EWR97 EWR107 EWR137 EWR147 EWR167
Bodyweight nine 14 24 27 33 sixty one hundred ten 150 255 365 615
Shaft Ф 25mm 30mm 35mm 35mm 40mm 50mm 60mm 70mm 90mm 110mm 120mm

Packing

Features
♦Specially created for agitator. 
♦Compact composition, Built-in casting housing, reduced noise and lengthy support daily life. 
♦High performance and low routine maintenance. 

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

Technical Info
♦Size EWR37-EWR167
♦ Output Torque 130~18000N. M
♦ Motor Electricity .18~160kw
♦ Ratio 5~264(imax: 18125)

Industrial Software
♦Power Plant Equipment
♦Metallurgical Market
♦Metal Forming Equipment
♦Petrochemical Business
♦Mining Equipment
♦Hoisting Machinery
♦Construction Business
♦Environmental Defense Industry
♦Cable Industry
♦Food Machinery

Certificates
Handed ” ISO 9001 Worldwide Good quality Program Certification”, “Europe CE Certificate”, ” Swiss SGS Certificate”, “Higher-tech enterprise certification of ZheJiang city”, “Superb functionality management enterprise of ZheJiang city”, etc. 

FAQ
1. Q: Can you make as for each buyer drawing? 
A: Sure, we offer you personalized support for customers. 

two. Q: Are you a factory or investing company? 
A. We are a company in ZheJiang , China. 

three. Q: What is actually your MOQ? 
A: A single piece. 

4. Q: Wha’s yout top quality manage system?
A: We are accredited with CE,CCC,ISO 9001. We have possess unbiased QC team * innovative equipments to ensure good quality from materials buying til products shipping and delivery.

five. Q: What is your creation time? 
A: fifteen-35 working days right after receiving payment. 

6. Q: What is actually your payment terms? 
A: T/T, 30% payment in advance, 70% equilibrium payment ought to be paid before transport. 

seven. Q: What’s your package? 
A: In wood box packaging. 

Business info

ZheJiang CZPT Equipment Reducer Co., Ltd. is a massive professional maker & exporter of numerous helical gear reducers and focus in the equipment reducers area in China for 20 several years. CZPT has excellent R&D crew, top-rating manufacturing and examination tools. So we have the powerful power in the building and manufacturing the standards kind as nicely as the custom-made type equipment reducer for our buyers.

We make and provide 6 series of pace reducer as follows:
EWK sequence helical-bevel gear reducers,
EWR collection helical gear reducers,
EWF sequence helical gear reducers,
EWS sequence helical-worm equipment reducers
HB series gearboxes,
P collection planetary gear reducers,and so on.

Our items have been exporting to many international locations and locations, like but not minimal Argentina , Brazil, Mexico, Columbia , Ecuador , United states of america, South Korea, Vietnam, Indonesia, Ga, South Africa, China HK, China Taiwai,

Welcome to send out us enquiry or drawing. Pay a visit to us in ZheJiang , China.

 

Application: Motorcycle, Machinery, Marine, Toy, Agricultural Machinery
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Layout: Coaxial
Gear Shape: Helical Gear
Step: Three-Step

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Customization:
Available

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Housing material HT200 high-strength cast iron(EWR37, EWR47, EWR57, EWR67, EWR77, EWR87)
Housing material HT250 High strength cast iron(EWR97EWR 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
Application: Motorcycle, Machinery, Marine, Toy, Agricultural Machinery
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Layout: Coaxial
Gear Shape: Helical Gear
Step: Three-Step

###

Customization:
Available

|


###

Housing material HT200 high-strength cast iron(EWR37, EWR47, EWR57, EWR67, EWR77, EWR87)
Housing material HT250 High strength cast iron(EWR97EWR 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

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.helical gearbox

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 Ewr Series Bevel Helical Foot Mounted Gearbox Reducer (EWR37-167)     helical gearbox advantagesChina Ewr Series Bevel Helical Foot Mounted Gearbox Reducer (EWR37-167)     helical gearbox advantages
editor by czh 2023-03-24

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