China Hot Sales and 250bx High Precision Cycloidal Gearbox for Robot Arm

Product Description

250BX RVE Series High Precision Cycloidal Gearbox
 

Product Description

RVE series is our standard series, from 150BX to 320BX, a total of 6 models, reduction ratio from 41 to 185. Precision Cycloidal Gearbox are widely used in robotic arms, ATC, medical machinery and AGV drives,etc.

The main features of Precision Cycloidal Gearbox:
1. High precision: backlash accuracy is less than 1 arc.min, comprehensive transmission accuracy is less than 1 arc.min, and rotation repeatability is less than 20 seconds.
2. Good rigidity and small backlash can overcome the jitter when the large inertia mechanism starts and stops. It has strong impact resistance, strong anti-interference ability, and can withstand impact 5 times the rated torque.
3. Small backlash, stable rotation. Be CZPT to start and stop at any point of 360 degrees. Fast response, small hysteresis, and correct inHangZhou.
4. Flexible application, diverse transmission and installation methods.
 

How to Read:

250 BX 81  RVE A  B   (  )
 a      b    c    d     e   f    g
 

a    Frame Size     250 = 244mm
b    Series code:BX     Precision Cycloidal Gearbox series  
c    Reduction Ratio     RVE type: Without Flange:  81,111,161,175.28
    REA type: With Flange: 81,111,161,175.28
d    Type Code of Gearbox      RVE: Main shaft bulit-in type
     RVC: Hollow type;
     REA: RVE type wiith flange
     RCA: RVC type with flange
e     Input shaft type      A:  Standard type  A (See drawings and table below)
     B:  Standard type B (See drawings and table below)
     Z: Special ordering type
     W: None.
     TB: For RVC serices (Input with synchronous pulley)
f    Method of Mounting     B: Mounted by bolt (output shaft)
    P: Mounted by bolt and locating pines together (output shaft)
g Diameter of motor shaft

 

Spesifications & Details

Dimensions(Unit: mm):  

 

Output Speed 5r/m 15r/m 25r/m 30r/m Maximum Allowable Output Speed
r/min
  Output Torque N.m Input Power KW Output Torque N.m Input Power KW Effiency % Output Torque
N.m
Input Power KW Output Torque
N.m
Input Power
KW
250BX 1528 1 1078 2.12 80 978 3.2 892 3.5 50

Note: The rated torque is the output torque when the output speed is 18 r/min.
The input power have had the efficiency of the gearbox considered. 

 

Project Ratio Allowable Torque
N.m
Torsional Rigidity
N.m /(arc.min)
Instantaneous Max. Torque N.m Transmission Accuracy arc.min Backlash  arc.min Life Moment of Inertia(I=GD²/4)
Model Shaft Output Shell Output
250BX 81.00  80.00  2900.00  294.00  5380.00  1.00  1.00  6000  9.88×10-5
111.00  110.00  6.96×10-5
161.00  160.00  4.36×10-5
175.28  174.28  3.89×10-5
/ /

Input Gear Shaft Type Model No. A B BB C D d dd E F L
Standand A 250BX-E 34 70 / 120 40 19 or 22 or 24 9.0 38 / /
Standand B / / / / / / / / / / /

 

RVE Series Structure

1. Needle Tooth Shell
2. Pin Gear                       
3. Main Bearing
4. Output Flange                       
5. Supporting Flange       
6. Input Shaft
7. Crankshaft                             
8. Planetary Gear             
9. Precision Cycloidal Gear

 

Main internal parts

Crankshaft
1. It is connected with the spur gears to form the input part of the second stage reduction of the reducer
2. The crankshaft does eccentric movement
3. Imported grinding wheel follow-up precision grinding, imported measuring center detects the accuracy of parts

Precision Cycloidal Gear
1.Grinding with imported precision gear grinding machine
2. Connected to the eccentric part of the crankshaft

Needle Tooth Shell
One-time clamping to complete fine grinding

 

 

More products,please click here…
 

Industry Application Case

Precision Cycloidal Gearbox is widely used in industrial machinery fields such as machine tool of four-5-axis, pick-up manipulator for die-casting, industrial robot, die-casting feeding machine, manipulator for punching machine, AGV driver, bottle-making machine and etc.

Quality Control

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.
planetarygearbox

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.
planetarygearbox

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.
planetarygearbox

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.

China Hot Sales and 250bx High Precision Cycloidal Gearbox for Robot Arm  China Hot Sales and 250bx High Precision Cycloidal Gearbox for Robot Arm

Planetary Gearbox

As one of the leading planetary gearbox manufacturers, suppliers, and exporters of mechanical products, We offer planetary gearbox and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of the planetary gearbox.

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