China high quality Zd One – Two Stages High Precision 78mm Zdr Series Planetary Gearbox with Good quality

Product Description

ZD One – Two Stages High Precision 78mm ZDR Series Planetary Gearbox

Product Description

ZDR series planetary gearbox has adopted helical gear design, so the meshing of gears can be smoother. This series has a double-supported and sealed structure, easier to install for customers. It is widely used in linear manipulators, packaging machinery, assembly lines and etc. The maximum backlash of the ZDR series is less than 5 arc.min and the reduction ratio covers 3~81.

The Product Advantages of Planetary Gearbox:

1.Flexible structure design, in line with various working conditions.
2.Ring gear processing technology: Using internal gear slotting machine and hobbing machine; the precision of ring gear after processing can reach GB7.
3.Hardened gear secondary scraping technology: secondary high-speed dry cutting of gear eliminates gear deformation caused by heat treatment. Gear accuracy can reach GB6.
4.Reliable backlash testing.

How to Read:
78 ZDR 20 ( ) (S) – 750 T1 ( )
a b c d e f g h

a Frame Size 78 =78mm
b Series code:ZDR Oblique tooth precision
c Reduction Ratio Single Stage: 3,4,5,6,7,8,9,10;
Two Stages: 15,20,25,35,45,81.
d Backlash Single Stage: 8arc.min;
Two Stages: 12arc.min;
e Input shaft type S:Overall locking(Omission)(regardless whether the motor with keyway can use it. But D Cut can’t use)
S1:Locking with locking ring(regardless whether the motor with keyway can use it. But D Cut can’t use)
S2:Locking with keyway (input shaft with key)
K:With keyway
A:0ther type (please contact with us)
f Applicable servo motor power (W),Please contact us for specific power
g Please contact us for the mouting type of the flang
h Please contact us for the model of servo motor

Spesifications & Details

When input speed is 3000rpm

Product NO. Reduction Ratio Motor Output Shaft Speed (rpm) Standard Output Torque (N.m) Instantaneous max.Output Torque (N.m) Permissible Radial Load (N) Permissible Axial Load (N) Internal Moment Ohnertia Of Input Shaftconversion (x10-4 kg.m2) Perrmissible Output Torque (N.m) Instantaneous Max. Permissible Output Torque (N.m)
78ZDR 3 750 1000 6.37 19.3 784 392 0.913 6.86 20.6
5 400 600 5.39 16.2 980 490 0.363 6.57 19.7
750 10.7 32.1 0.713 11.5 34.3
9 200 333 3.72 11.3 1180 588 0.275 9.70 29.2
400 9.51 28.5

Note1) The moment of input shaft conversion is only gained from the reducer, so it does not include moment of inertia of the motor.
Note2) The max. input speed is 5000rpm. Usually set to 3000rpm or less.
Note3) The permissble radial load is indicated on the center of the output shaft.
Note4) All values are within the range corresponding to helical gear.

When input speed is 3000rpm

Product NO. Reduction Ratio Motor Output Shaft Speed (rpm) Standard Output Torque (N.m) Instantaneous max.Output Torque (N.m) Permissible Radial Load (N) Permissible Axial Load (N) Internal Moment Ohnertia Of Input Shaftconversion (x10-4 kg.m2) Perrmissible Output Torque (N.m) Instantaneous Max. Permissible Output Torque (N.m)
78ZDR 15 200 200 6.27 18.8 1470 735 0.300 16.2 48.6
400 15.8 47.5
20 200 150 8.69 26.1 1570 785 0.294 21.1 63.3
400 21.1 63.3
25 200 120 11.1 33.3 1670 833 0.288 21.7 64.9
400 26.4 79.2 26.4 79.2
35 100 85 7.24 21.7 1670 833 0.065 13.9 41.7
200 15.5 46.6 0.262 15.5 46.6
45 50 66 3.86 11.6 1670 833 0.5715 9.50 28.6
100 9.31 28.0
81 50 37 7.02 20.8 1670 833 0.571 9.70 29.2

Note1) The moment of input shaft conversion is only gained from the reducer, so it does not include moment of inertia of the motor.
Note2) The max, input speed is 5000rpm. Usually set to 3000rpm or less.
Note3) The permissble radial load is indicated on the center of the output shaft.
Note4) All values are within the range corresponding to helical gear.

When input speed is 2000rpm
 

Product NO. Reduction Ratio Motor Output Shaft Speed (rpm) Standard Output Torque (N.m) Instantaneous max.Output Torque (N.m) Permissible Radial Load (N) Permissible Axial Load (N) Internal Moment Ohnertia Of Input Shaftconversion (x10-4 kg.m2) Perrmissible Output Torque (N.m) Instantaneous Max. Permissible Output Torque (N.m)
78ZDR 3 400 666 5.01 15.0 900 450 0.913 6.86 20.6
5 200 400 3.82 11.5 1120 560 0.363 6.57 19.7
400 8.35 25.1 0.713 11.5 34.3
9 100 222 2.35 7.04 1340 670 0.275 9.70 29.2
200 6.64 19.9
15 100 133 3.91 11.7 1670 833 0.300 16.2 48.6
200 11.1 33.2
20 100 100 5.73 17.2 1790 895 0.294 21.1 63.3
200 14.8 44.4
25 100 80.0 7.16 21.5 1670 833 0.288 21.7 64.9
200 18.5 55.4
35 50 57.0 4.43 13.3 1900 950 0.262 15.5 46.6
100 12.7 38.1
45 50 44.4 5.80 17.4 1670 833 0.5715 9.50 28.6
81 50 24.6 9.70 29.2 1670 833 0.5710 9.70 29.2

Note1) The moment of input shaft conversion is only gained from the reducer, so it does not include moment of inertia of the motor.
Note2) The permissble radial load is indicated on the center of the output shaft.
Note3) All values are within the range corresponding to helical gear.

Dimensions (Unit: mm):

 

Product NO. Reduction Ratio Motor Total Length L Output Shaft Flange
Panasonic- made
MSMA
Yaskawa-made SGMASH SGMSH Mitsubishi-made HC-KFS
HC-RFS
LR S Q QM QM W×U T D LB LE LA LZ X
78ZDR 45,81 50 142 50 19 30 26 M5(depth)20 6×21.5 6 80 70 3 90 M6 20
35 100 150
45 100 142
9 200 139.5
15,20,25,35 200 150
5,9 400 139.5
15,20,25 400 150
3,5 750 143.5

Note1) Please inquire to us if motor model isn’t standard (Matching motor list). (The flange dimension may be different if motor assension is different.)
Note2) Rotation of the output shaft is in the same direction as that of motor input.
Note3) All values are within the range corresponding to helical gear.
 

Mechanism

Double support mechanism

1.The planetary gear is placed in the middle of the output shaft.
2.The output shaft bearing is placed at both ends of the planetary gear.
3.Separate sun gear and coupling.

Compact output shaft mechanism

It adopts the design of output shaft integrated system, compact structure, high rigidity, and it can withstand large impact. Place the input coupling and the sun gear at the center of the output shaft to improve the concentricity of the components, thereby effectively controlling the gear clearance and improving the backlash of the whole gearbox.

 

Structure

Full needle structure

The inner bearing of the planetary gear adopts a full-needle design, the inner hole is made by a grinding process, the surface hardness is HRC60, and the cylindricity is less than 0.003mm.

Ring gear structure

The integral structure of the ring gear and the output flange improves its rigidity and reduces misassembly.

 

Other Model Type of ZDR Series

More products,please click here…

Company Profile

 

Delivery

Our Services

1.Maintenance time & Warranty: 1 year after leaving factory.

2.Other service: Including modeling selection guide, installation guide, and problem shooting guide, etc.

FAQ

Q: What’re your main products?
A: We currently produce Brushed DC Motors, Brushed DC Gear Motors, Planetary DC Gear Motors, Brushless DC Motors, AC Motors, High Precision Planetary Gearbox and Precision Cycloidal Gearbox etc.. You can check the specifications for above motors on our website and you can email us to recommend needed motors per your specification too.

Q: How to select a suitable motor or gearbox?
A:If you have motor pictures or drawings to show us, or you have detailed specifications, such as, voltage, speed, torque, motor size, working mode of the motor, needed lifetime and noise level etc, please do not hesitate to let us know, then we can recommend suitable motor per your request accordingly.

Q: Do you have a customized service for your standard motors or gearboxes?
A: Yes, we can customize per your request for the voltage, speed, torque and shaft size/shape. If you need additional wires/cables soldered on the terminal or need to add connectors, or capacitors or EMC we can make it too.

Q: Do you have an individual design service for motors?
A: Yes, we would like to design motors individually for our customers, but some kind of molds are necessory to be developped which may need exact cost and design charging.

Q: What’s your lead time?
A: Generally speaking, our regular standard product will need 15-30days, a bit longer for customized products. But we are very flexible on the lead time, it will depend on the specific orders.

 

Key Market Insights Related to Worm Reduction Gearboxes

A gearbox is a mechanical device that allows you to shift between different speeds or gears. It does so by using 1 or more clutches. Some gearboxes are single-clutch, while others use 2 clutches. You can even find a gearbox with closed bladders. These are also known as dual clutches and can shift gears more quickly than other types. Performance cars are designed with these types of gearboxes.
gearbox

Backlash measurement

Gearbox backlash is a common component that can cause noise or other problems in a car. In fact, the beats and sets of gears in a gearbox are often excited by the oscillations of the engine torque. Noise from gearboxes can be significant, particularly in secondary shafts that engage output gears with a differential ring. To measure backlash and other dimensional variations, an operator can periodically take the output shaft’s motion and compare it to a known value.
A comparator measures the angular displacement between 2 gears and displays the results. In 1 method, a secondary shaft is disengaged from the gearbox and a control gauge is attached to its end. A threaded pin is used to secure the differential crown to the secondary shaft. The output pinion is engaged with the differential ring with the aid of a control gauge. The angular displacement of the secondary shaft is then measured by using the dimensions of the output pinion.
Backlash measurements are important to ensure the smooth rotation of meshed gears. There are various types of backlash, which are classified according to the type of gear used. The first type is called circumferential backlash, which is the length of the pitch circle around which the gear rotates to make contact. The second type, angular backlash, is defined as the maximum angle of movement between 2 meshed gears, which allows the other gear to move when the other gear is stationary.
The backlash measurement for gearbox is 1 of the most important tests in the manufacturing process. It is a criterion of tightness or looseness in a gear set, and too much backlash can jam a gear set, causing it to interface on the weaker part of its gear teeth. When backlash is too tight, it can lead to gears jamming under thermal expansion. On the other hand, too much backlash is bad for performance.

Worm reduction gearboxes

Worm reduction gearboxes are used in the production of many different kinds of machines, including steel and power plants. They are also used extensively in the sugar and paper industries. The company is constantly aiming to improve their products and services to remain competitive in the global marketplace. The following is a summary of key market insights related to this type of gearbox. This report will help you make informed business decisions. Read on to learn more about the advantages of this type of gearbox.
Compared to conventional gear sets, worm reduction gearboxes have few disadvantages. Worm gear reducers are commonly available and manufacturers have standardized their mounting dimensions. There are no unique requirements for shaft length, height, and diameter. This makes them a very versatile piece of equipment. You can choose to use 1 or combine several worm gear reducers to fit your specific application. And because they have standardized ratios, you will not have to worry about matching up multiple gears and determining which ones fit.
One of the primary disadvantages of worm reduction gearboxes is their reduced efficiency. Worm reduction gearboxes usually have a maximum reduction ratio of 5 to 60. The higher-performance hypoid gears have an output speed of around 10 to 12 revolutions. In these cases, the reduced ratios are lower than those with conventional gearing. Worm reduction gearboxes are generally more efficient than hypoid gear sets, but they still have a low efficiency.
The worm reduction gearboxes have many advantages over traditional gearboxes. They are simple to maintain and can work in a range of different applications. Because of their reduced speed, they are perfect for conveyor belt systems.
gearbox

Worm reduction gearboxes with closed bladders

The worm and the gear mesh with each other in a combination of sliding and rolling movements. This sliding action is dominant at high reduction ratios, and the worm and gear are made of dissimilar metals, which results in friction and heat. This limits the efficiency of worm gears to around 30 to 50 percent. A softer material for the gear can be used to absorb shock loads during operation.
A normal gear changes its output independently once a sufficient load is applied. However, the backstop complicates the gear configuration. Worm gears require lubrication because of the sliding wear and friction introduced during movement. A common gear arrangement moves power at the peak load section of a tooth. The sliding happens at low speeds on either side of the apex and occurs at a low velocity.
Single-reduction gearboxes with closed bladders may not require a drain plug. The reservoir for a worm gear reducer is designed so that the gears are in constant contact with lubricant. However, the closed bladders will cause the worm gear to wear out more quickly, which can cause premature wear and increased energy consumption. In this case, the gears can be replaced.
Worm gears are commonly used for speed reduction applications. Unlike conventional gear sets, worm gears have higher reduction ratios. The number of gear teeth in the worm reduces the speed of a particular motor by a substantial amount. This makes worm gears an attractive option for hoisting applications. In addition to their increased efficiency, worm gears are compact and less prone to mechanical failure.

Shaft arrangement of a gearbox

The ray-diagram of a gearbox shows the arrangement of gears in the various shafts of the transmission. It also shows how the transmission produces different output speeds from a single speed. The ratios that represent the speed of the spindle are called the step ratio and the progression. A French engineer named Charles Renard introduced 5 basic series of gearbox speeds. The first series is the gear ratio and the second series is the reverse gear ratio.
The layout of the gear axle system in a gearbox relates to its speed ratio. In general, the speed ratio and the centre distance are coupled by the gear axles to form an efficient transmission. Other factors that may affect the layout of the gear axles include space constraints, the axial dimension, and the stressed equilibrium. In October 2009, the inventors of a manual transmission disclosed the invention as No. 2. These gears can be used to realize accurate gear ratios.
The input shaft 4 in the gear housing 16 is arranged radially with the gearbox output shaft. It drives the lubricating oil pump 2. The pump draws oil from a filter and container 21. It then delivers the lubricating oil into the rotation chamber 3. The chamber extends along the longitudinal direction of the gearbox input shaft 4, and it expands to its maximum diameter. The chamber is relatively large, due to a detent 43.
Different configurations of gearboxes are based on their mounting. The mounting of gearboxes to the driven equipment dictates the arrangement of shafts in the gearbox. In certain cases, space constraints also affect the shaft arrangement. This is the reason why the input shaft in a gearbox may be offset horizontally or vertically. However, the input shaft is hollow, so that it can be connected to lead through lines or clamping sets.
gearbox

Mounting of a gearbox

In the mathematical model of a gearbox, the mounting is defined as the relationship between the input and output shafts. This is also known as the Rotational Mount. It is 1 of the most popular types of models used for drivetrain simulation. This model is a simplified form of the rotational mount, which can be used in a reduced drivetrain model with physical parameters. The parameters that define the rotational mount are the TaiOut and TaiIn of the input and output shaft. The Rotational Mount is used to model torques between these 2 shafts.
The proper mounting of a gearbox is crucial for the performance of the machine. If the gearbox is not aligned properly, it may result in excessive stress and wear. It may also result in malfunctioning of the associated device. Improper mounting also increases the chances of the gearbox overheating or failing to transfer torque. It is essential to ensure that you check the mounting tolerance of a gearbox before installing it in a vehicle.

China high quality Zd One - Two Stages High Precision 78mm Zdr Series Planetary Gearbox     with Good qualityChina high quality Zd One - Two Stages High Precision 78mm Zdr Series Planetary Gearbox     with Good quality

agricultural gearbox

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