Product Description
98mm ZDR Series High Precision Planetary Gearbox For Servo Moto
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:
98 ZDR 20 ( ) (S) – 750 T1 ( )
a b c d e f g h
| a | Frame Size | 98 =98mm |
| 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) |
| 98ZDR | 3 | 1000 | 1000 | 7.55 | 22.8 | 882 | 441 | 2.43 | 18.3 | 54.9 |
| 1500 | 12.3 | 37.1 | ||||||||
| 2000 | 17.2 | 51.5 | ||||||||
| 5 | 1000 | 600 | 13.4 | 40.5 | 1080 | 539 | 1.85 | 23.5 | 70.6 | |
| 1500 | 21.5 | 64.4 | ||||||||
| 9 | 750 | 333 | 18.2 | 54.7 | 1470 | 735 | 0.650 | 18.2 | 54.7 |
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) |
| 98ZDR | 15 | 750 | 200 | 30.4 | 91.2 | 1760 | 882 | 0.700 | 30.4 | 91.2 |
| 20 | 750 | 150 | 40.6 | 122 | 1910 | 955 | 0.690 | 40.6 | 122 | |
| 25 | 750 | 120 | 50.7 | 152 | 2060 | 1030 | 0.680 | 50.7 | 152 | |
| 35 | 400 | 85 | 37.0 | 111 | 2060 | 1030 | 0.269 | 37.0 | 111 | |
| 45 | 200 | 66 | 21.1 | 63.5 | 2060 | 1030 | 0.5716 | 28.3 | 85.2 | |
| 81 | 100 | 37 | 14.0 | 42.0 | 2060 | 1030 | 0.030 | 17.8 | 53.5 |
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 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) |
| 98ZDR | 3 | 750 | 666 | 8.73 | 26.2 | 1571 | 505 | 2.43 | 18.3 | 54.9 |
| 1000 | 12.3 | 37.1 | ||||||||
| 1500 | 18.3 | 54.9 | ||||||||
| 5 | 750 | 400 | 15.5 | 46.5 | 1230 | 615 | 1.85 | 23.5 | 70.6 | |
| 1000 | 21.5 | 64.4 | ||||||||
| 9 | 400 | 222 | 14.0 | 41.9 | 1680 | 840 | 0.650 | 18.2 | 54.7 | |
| 15 | 400 | 133 | 23.3 | 69.8 | 2571 | 1571 | 0.700 | 30.4 | 91.2 | |
| 20 | 400 | 100 | 31.0 | 93.1 | 2180 | 1090 | 0.294 | 40.6 | 122 | |
| 25 | 400 | 80.0 | 38.8 | 116 | 2060 | 1030 | 0.680 | 50.7 | 152 | |
| 35 | 200 | 57.0 | 22.0 | 66.0 | 2340 | 1170 | 0.269 | 37.0 | 111 | |
| 45 | 100 | 44.4 | 14.0 | 42.1 | 2060 | 1030 | 0.5715 | 28.3 | 85.2 | |
| 200 | 28.3 | 85.2 | ||||||||
| 81 | 100 | 24.6 | 17.8 | 53.5 | 2060 | 1030 | 0.0300 | 17.8 | 53.5 |
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 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 | |||
| 98ZDR | 81 | 100 | 158 | 61 | 24 | 40 | 35 | M6(depth)20 | 8×27 | 7 | 100 | 90 | 5 | 115 | M8 | 20 | ||
| 45 | 200 | 165 | ||||||||||||||||
| 35 | 400 | |||||||||||||||||
| 9 | 750 | 158.5 | ||||||||||||||||
| 15,20,25 | 750 | 171 | ||||||||||||||||
| 3,5 | 1000 | 177 | ||||||||||||||||
| 3,5 | 1500 | |||||||||||||||||
| 3 | 2000 | |||||||||||||||||
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.
Planetary Gearbox Advantages and Disadvantages
A planetary gearbox is a type of mechanical drive with a single output shaft. They are suitable for both clockwise and counterclockwise rotations, have less inertia, and operate at higher speeds. Here are some advantages and disadvantages of this type of gearbox. Let us see what these advantages are and why you should use them in your applications. Listed below are some of the benefits of planetary gearboxes.
Suitable for counterclockwise and clockwise rotation
If you want to teach children about the clock hands, you can buy some resources for counterclockwise and asymmetrical rotation. These resources include worksheets for identifying degrees of rotation, writing rules for rotation, and visual processing. You can also use these resources to teach angles. For example, the translation of shapes activity pack helps children learn about the rotation of geometric shapes. Similarly, the visual perception activity sheet helps children understand how to process information visually.
Various studies have been done to understand the anatomical substrate of rotations. In a recent study, CZPT et al. compared the position of the transitional zone electrocardiographically and anatomically. The authors found that the transitional zone was normal in 9 of 33 subjects, indicating that rotation is not a sign of disease. Similarly, a counterclockwise rotation may be caused by a genetic or environmental factor.
The core tip data should be designed to work in both clockwise and counterclockwise rotation. Counterclockwise rotation requires a different starting point than a clockwise rotation. In North America, star-delta starting is used. In both cases, the figure is rotated about its point. Counterclockwise rotation, on the other hand, is done in the opposite direction. In addition, it is possible to create counterclockwise rotation using the same gimbal.
Despite its name, both clockwise and counterclockwise rotation requires a certain amount of force to rotate. When rotating clockwise, the object faces upwards. Counterclockwise rotation, on the other hand, starts from the top position and heads to the right. If rotating in the opposite direction, the object turns counterclockwise, and vice versa. The clockwise movement, in contrast, is the reverse of counterclockwise rotation.
Has less inertia
The primary difference between a planetary gearbox and a normal pinion-and-gear reducer is the ratio. A planetary gearbox will produce less inertia, which is an important advantage because it will reduce torque and energy requirements. The ratio of the planetary gearbox to its fixed axis counterpart is a factor of three. A planetary gearbox has smaller gears than a conventional planetary, so its inertia is proportional to the number of planets.
Planetary gears are less inertia than spur gears, and they share the load across multiple gear teeth. This means that they will have low backlash, and this is essential for applications with high start-stop cycles and frequent rotational direction changes. Another benefit is the high stiffness. A planetary gearbox will have less backlash than a spur gearbox, which means that it will be more reliable.
A planetary gearbox can use either spur or helical gears. The former provides higher torque ratings while the latter has less noise and stiffness. Both types of gears are useful in motorsports, aerospace, truck transmissions, and power generation units. They require more assembly time than a conventional parallel shaft gear, but the PD series is the more efficient alternative. PD series planetary gears are suitable for many applications, including servo and robotics.
In contrast, a planetary gear set can have varying input speed. This can affect the frequency response of the gearset. A mathematical model of the two-stage planetary gears has non-stationary effects and correlates with experimental findings. Fig. 6.3 shows an addendum. The dedendum’s minimum value is approximately 1.25m. When the dedendum is at its smallest, the dedendum has less inertia.
Offers greater reliability
The Planetary Gearbox is a better option for driving a vehicle than a standard spur gearbox. A planetary gearbox is less expensive, and they have better backlash, higher load capacity, and greater shock loads. Unlike spur gearboxes, however, mechanical noise is virtually nonexistent. This makes them more reliable in high-shock situations, as well as in a wide range of applications.
The Economy Series has the same power density and torque capacity of the Precision Helical Series, but it lacks the precision of the latter. In contrast, Economy Series planetary gearboxes feature straight spur planetary gearing, and they are used in applications requiring high torque. Both types of gearboxes are compatible with NEMA servo motors. If torque density is important, a planetary gearbox is the best choice.
The Dispersion of External Load: The SSI model has been extensively used to model the reliability of planetary gear systems. This model takes the contact force and fatigue strength of the system as generalized stress and strength. It also provides a theoretical framework to evaluate the reliability of planetary gear systems. It also has many other advantages that make it the preferred choice for high-stress applications. The Planetary Gearbox offers greater reliability and efficiency than traditional rack and pinion gear systems.
Planetary gearing has greater reliability and compact design. Its compact design allows for wider applications with concerns about space and weight. Additionally, the increased torque and reduction makes planetary gearboxes an excellent choice for a wide variety of applications. There are 3 major types of planetary gearboxes, each with its own advantages. This article describes a few of them. Once you understand their workings, you will be able to choose the best planetary gearbox for your needs.
Has higher operating speeds
When you look at planetary gearboxes, you might be confused about which 1 to choose. The primary issue is the application of the gearbox. You must also decide on secondary factors like noise level, corrosion resistance, construction, price, and availability worldwide. Some constructors work faster than others and deliver the gearboxes on the same day. However, the latter ones often deliver the planetary gearbox out of stock.
Compared to conventional gearboxes, a planetary gearbox can run at higher speeds when the input speed fluctuates. However, these gears are not very efficient in high-speed applications because of their increased noise levels. This makes planetary gears unsuitable for applications involving a great deal of noise. That is why most planetary gears are used in small-scale applications. There are some exceptions, but in general, a planetary gearbox is better suited for applications with higher operating speeds.
The basic planetary gearbox is a compact alternative to normal pinion-and-gear reducers. They can be used in a wide variety of applications where space and weight are concerns. Its efficiency is also higher, delivering 97% of the power input. It comes in 3 different types based on the performance. A planetary gearbox can also be classified as a worm gear, a spur gear, or a sprocket.
A planetary gearhead has a high-precision design and can generate substantial torque for their size. It also reduces backlash to 2 arc-min. Additionally, it is lubricated for life, which means no maintenance is needed. It can fit into a small machine envelope and has a small footprint. Moreover, the helical crowned gearing provides fast positioning. A sealed gearbox prevents abrasive dust from getting into the planetary gearhead.
Has drawbacks
The design of a planetary gearbox is compact and enables high torque and load capability in a small space. This gear arrangement also reduces the possibility of wear and tear. Planet gears are arranged in a planetary fashion, allowing gears to shift under load and a uniform distribution of torque. However, some disadvantages of planetary gears must be considered before investing in this gearbox.
While the planetary gearbox is a high precision motion-control device, its design and maintenance requirements are a concern. The bearing load is high, requiring frequent lubrication. Also, they are inaccessible. Despite these drawbacks, planetary gearboxes are suitable for a variety of tasks. They also have low backlash and high torsional stiffness, making them excellent choices for many applications.
As a result, the speed of a planetary gearbox varies with load and speed. At lower ratios, the sun gear becomes too large in relation to the planet gears. As the ratio increases, the sun gear will become too low, reducing torque. The planetary gears also reduce their torque in high-speed environments. Consequently, the ratio is a crucial consideration for planetary gearbox condition monitoring.
Excess drag may result from out-of-tolerance components or excessive lubrication. Drag should be measured both in directions and be within acceptable ranges. Grease and oil lubrication are 2 common planetary gearbox lubricants, but the choice is largely dependent on your application. While grease lubricates planetary gears well, oil needs maintenance and re-lubrication every few thousand hours.
