China best G3FM Series Helical Gearbox with Electric DC Motors helical gearbox for sale

Product Description

SpecificationsOur G3 helical gear motor products using advanced production technology. is reach the small deformation,high precision,low noise and smooth running

Model & Mark :G3FM-1:20-0.75KW-28mm

G3 Model code
F/L Mount mode F:Flange mounted L:Foot mounted 
M/B/S Power mode M:Standard model(motor without brake) B:Brake model (motor with brake) S:IEC input  Without character means shaft input
1:20 Speed ratio of reducer (i=5,10,15,20~~~200)
0.75kw Motor power (0.1kw 0.2kw 0.4kw 0.75kw)
28mm Output shaft Diameter (18,22,28,32,40,50mm)


Performance parameter                                  
Normal ratio 5 10 15 20 25 30 40 50 60 80 100 100 120 160 200
0.2kw output shaft 18mm 22mm 28mm
actual speed ratio 4.97 10.12 15.16 20.08 24.89 30.86 39.56 49.09 62.17 79.12 98.18 104.08 120.88 165 196.43
rpm 282 138 92 70 56 45 35 29 23 18 14 13 12 8 7
NM 50Hz 6.5 12.6 19.1 26.3 32.6 38.9 50.4 63 75.6 100.8 103.9 125.4 150 200.4 250.7
60Hz 5.4 10.5 16.6 21.9 27.1 32.4 42 52.5 63 84 86.6 104.5 125 167 208.9
Fr1 588 882 980 1180 1270 1760 1860 1960 2160 2450 2450 2840 3330 3430 3430
Fr2 196


Output torque of IEC input reducer
Normal ratio 5 10 15 20 25 30 40 50 60 80 100 100 120 160 200
0.18kw Output shaft 18mm 22mm 28mm
NM 50Hz 5.9 11.4 17.2 23.6 29.3 35 45.3 56.7 68.1 90.7 93.5 112.8 135 180.3 225.6
60Hz 4.9 9.5 14.9 19.7 24.4 29.2 37.8 47.3 56.7 75.6 77.9 94 112.5 150.3 188

Quantity of lubricant
output shaft dia 18mm 22mm 28mm 32mm 40mm 50mm
quantity of lubricant 140 200 400 600 900 1600

G3FM 3 phase motor reducer with flange


Power kw Output shaft Ratio Primary outline and dimension-mount
A F I J M O O1 P Q R S T U W X Y Y1
1 2
0.2 18 5/10/15/20/25 267 270 192.5 11 16.5 170 4 10 30 145 35 18 20.5 129 6 161 80 81
22 30/40 50/60 80/100 293 296 197.5 11 19 185 4 12 40 148 47 22 24.5 129 6 171.5 89.5 83.5
28 100/120 160/200 306 309.5 208.5 11 23.5 215 4 15 45 170 50 28 31 129 8 198.5 105.5 88


Defective reason analysis Solution method
Noise Knocking Gear surface damaged Contact manufacturer,replace gear set
Continual cacophony Bearing damaged Replace the damaged bearing
Periodical cacophony Particle on gear surface Check gear surface
Neigh Lack of lubricant Fill with lubricant
Intermittent cacophony Dirty lubricant Replace the new lubricant
Shake Fixed foundation shake Deflective mount on the surface Re-adjust fixed pedestal
Output shaft shake Bearing damage Replace the damaged bearing
Inner gear parts shake Gear damage Replace the damaged gear
Housing shake Defective gear assembly Re-adjust the gear set
Leakage Oil seal leakage Oil seal vulcanize Replace the damaged oil seal
Housing leakage Housing with the sand hole Replace housing with the sand hole
Housing shake O-ring damaged Replace the damaged O-ring
Over-heating Oil seal damaged Over-tighten oil seal Replace over-tighten oil seal
Over-heat housing Over-road Re-calculate load
Lack of lubricant Low lubricant Fill with lubricant
Over-heat motor 1,the temperature of environment is too high 2,airiness is bad 3,pressure is too high or too low 1,take measure to reduce the temperature 2,clean out the wind passage and check the motor if cooling fan has been damaged 3,adjust electrical source pressure
The motor can`t work   Electrical source haven`t been switched on  Check if the switch is contacted will,if the fuse wise is broken or the motor down-lead is broken
The rotate speed of the
output shaft is too low
  Wrong control connection outside
Over loading
Wrong ratio
Electrical source pressure too low
Correct is on the right connection
Reduce the load
Check the rotation ratio of the cooling fan and output shaft by hand
Adjust electrical source pressure 
Reduce load
Motor circumrotate,output
shaft don`t circu mrotate
  Inner gear set damaged Please contact the manufacture to replace the gear set

Welcome booking

Application: Motor, Industry
Hardness: Hardened
Type: Worm and Wormwheel
Motor Details: 200W 50Hz 220V
Input Speed: 1400rpm
Speed Ratio: 30


Customized Request

helical gearbox

Helical Gearbox

Using a helical gearbox can greatly improve the accuracy of a machine and reduce the effects of vibration and shaft axis impact. A gearbox is a circular machine part that has teeth that mesh with other teeth. The teeth are cut or inserted and are designed to transmit speed and torque.


Among the many types of gearboxes, the helical gearbox is the most commonly used gearbox. This is because the helical gearbox has a sliding contact. The contact between two gear teeth begins at the beginning of one tooth and progresses to line contact as the gear rotates.
Helical gears are cylindrical gears with teeth cut at an angle to the axis. This angle enables helical gears to capture the velocity reversal at the pitch line due to the sliding friction. This leads to a much smoother motion and less wear. Moreover, the helical gearbox is more durable and quieter than other gearboxes.
Helical gears are divided into two categories. The first group comprises of crossed-axis helical gears, commonly used in automobile engine distributor/oil pump shafts. The second group comprises of zero-helix-angle gears, which do not produce axial forces. However, they do create heat, which causes loss of efficiency.
The helical gearbox configuration is often confounded, which results in higher working costs. In addition, the helical gearbox configuration does not have the same torque/$ ratio as zero-helix angle planetary gears.
When designing gears, it is important to consider the effects of gear sliding. Sliding can lead to friction, which can cause loss of power transmission. It also leads to uneven load distribution, which decreases the loadability of the helical planetary gearbox.
In addition, the mesh stiffness of helical gears is commonly ignored by researchers. An analytical model for the mesh stiffness of helical gears has been proposed.

Axial thrust forces

Several options are available for axial thrust forces in helical gearboxes. The most obvious is to use a double helical gear to offset the force component. Another option is to use a thrust bearing with a lower load carrying capacity. This becomes a sacrificial component.
In order to transmit a force, it must be distributed along the contact line. This force is the sum of tangential, radial and axial force components. All these components must be transferred from the source to the output. This is a complex process that involves the use of gears.
The axial force component must be transferred through the gears. The resultant force is then divided into orthogonal components and divided into the thrust directions. The radial force component is from the contact point to the driven gear center.
The axial force component is also determined by the size of the gear’s pitch diameter. A larger pitch diameter results in a greater bearing moment. Similarly, a larger gear ratio will produce a higher torque transmission.
It should be noted that the axial force component is only a small part of the total force. The normal force is distributed along the contact line.
The double helical gear is also not a perfect duplicate of the herringbone gear. It has two equal halves. It is used interchangeably with the herringbone gear. It also has the same helix angle.helical gearbox

Reduced impact on the shaft axis

Increasing the helix angle of a gear pair will reduce resonance effects on the shaft axis of a helical gearbox. However, this will not reduce the overall vibration in the gearbox. In fact, it will increase the vibration. This can lead to serious fatigue faults in the drive train.
This is because the helix angle has an effect on the contact line between two teeth. As the helix angle increases, the length of the contact line decreases. In addition, it has an effect on the normal force and curvature radii of the teeth. The pressure angle also affects the curvature radii.
Helical gears have several advantages over spur gears. These advantages include: lower vibration, NVH (noise, vibration and harshness) characteristics, and smooth operation under heavy loads. They also have better torque capability. However, they produce higher friction. They also require unique approaches to control their thrust forces.
The first step in reducing resonance effects is to regulate the meshing frequency of the helical gear stage. This can be done by varying the shift factors in the gear. If the shift factors are too large, then the gear will experience resonance effects. The helix angle is also affected by the gear’s shift factors. It is therefore important to control the gear’s geometry in order to reduce the resonance effects.
Next, the effects of the web structure and rim thickness on the root stress of the gear are examined. These are measured by strain gage. The results indicate that the maximum root stress is obtained when the worst meshing position is reached.

Quieter operation

Compared to spur gears, helical gears are much quieter in operation. This is due to their larger teeth. Aside from this, they have a higher load-carrying capacity. They also run smoother and have a higher speed capability. Helical gears are also a good substitute for spur gears.
The most significant parameter relating to noise reduction is the gear contact ratio. It ranges from below 1 to more than 10 and is determined by the number of teeth intersecting a parallel shaft line at the pith circle. It is also a good indicator of the level of noise reduction that helical gears provide.
In addition, helical gears have a lower impulse flexure than spur gears. This is because the contact point slides along the helical surface of each tooth. This also adds internal damping to the gear system.
While helical gears are less noisy than spur gears, they do have a high level of wear and tear. This can affect the performance of the gear. However, it is possible to improve the smoothness of the tooth surface by grinding. In addition, running the gears in oil can also help improve the smoothness of the tooth surface.
There are many industries that use helical gears. For example, the automotive industry uses them in their transmissions. They also are used in the agricultural industry. They are often used in heavy trucks.
Helical gears are also known to generate less heat and are quieter than other gears. They can also deliver parallel power transfers between parallel or non-parallel shafts.

Improved accuracy

Increasing the accuracy of a helical gearbox is the key to its operation and reliability. The accuracy of the gearbox is dependent on several features. Among the most important are the profile and lead. Moreover, the power requirements of a gear drive should be taken into consideration.
The profile is the most sensitive feature of a helical gear. If the profile is not symmetric, the gear will run with a noisy spur gear. In addition, the profile is also the most sensitive to lead.
A helical gearbox plays a key role in the power transmission of industrial applications. However, the heavy duty operating conditions make it susceptible to a variety of faults.
A helical gearbox’s performance depends on the accuracy of the individual gears. This is accomplished by minimizing the backlash. A common way to reduce backlash is to approach all target positions from a common direction. This approach also reduces transmission noise.
The accuracy of a helical gearbox can be improved by using a flexible electronic gearbox. This can reduce the degree of twist. Moreover, it can increase the accuracy of gear machining.
A helical gearbox with an electronic gearbox can increase the accuracy of twist compensation. It can also improve the linkage between B-axis, C-axis, and Z-axis. Moreover, the electronic gearbox will ensure the linkage relationship between Y-axis, Z-axis, and C-axis.
The accuracy of a helical Gearbox can be improved by calculating the position error of the gear train. Pitch deviation and helix angle deviation are two types of position error.helical gearbox

Reduced vibration

Using helical gearboxes can reduce vibration and noise. These gears are used in a variety of applications, including automotive transmissions. Moreover, these gears are quiet enough to operate in noise-sensitive applications.
Using CZPT software, three different gearbox housing designs are compared. The external dimensions and mass of each design are kept constant, but different quantities of longitudinal and transverse stiffeners are employed. The resulting models are then compared to experimental results. In addition, the free vibration response of these models is analyzed. The results are shown in Fig. 5.
In terms of noise reduction, the cellular model produces the lowest sound pressure level. However, the cross model produces the higher sound level. The cellular model also produces better peak to peak results.
The input-stage gear pair is the power source of the output-stage gear pair. The output-stage gear pair’s vibration is also studied. This includes a phase diagram and a frequency-domain diagram. The influence of the driving torque and the pinion’s velocity on the vibration is studied in a numerical manner. The time evolution of the normal force and the lubricant stiffness is also studied.
The input-stage pinion modification reduces the input-stage gear pair’s vibration. This reduction is achieved by adding dual bearing support to the input shaft.
China best G3FM Series Helical Gearbox with Electric DC Motors   helical gearbox for saleChina best G3FM Series Helical Gearbox with Electric DC Motors   helical gearbox for sale
editor by CX 2023-05-06