Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of hollow reducer in China. If you're going to wholesale bulk cost-effective hollow reducer made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
With Hollow Reducer with customizable precision of ≤10 arc seconds at its core, we offer a complete precision transmission and manufacturing solution. This ranges from cam indexers with customizable precision of ±15 arc seconds, to planetary reducers with ultra-precision backlash of ≤1 arc minute, and harmonic reducers with customizable backlash of ≤5 arc seconds. Our comprehensive product line encompasses gear manufacturing with ISO/DIN/GB Grade 5 accuracy, CNC machining capabilities with ultra-mirror finishes of ±0.002mm, and castings with precision tolerances of ±0.03mm (maximum machining dimensions of 3800 x 1500 x 1200). Whether you're an equipment manufacturer, terminal manufacturer, or distributor, our comprehensive product line offers precisely matched precision components and manufacturing services.
What is hollow reducer?
High-precision and high-reliability transmission are desperately needed in the field of robotics and automated manufacturing. Hollow reducers, with their great performance, are becoming the ideal transmission solution demonstrating great application prospects and strong market demand.
Advantages
The advantages of hollow reducer in the field of robotics and automated production are mainly reflected in the following three aspects:
High precision and high reliability
The hollow reducer has the characteristics of internal and external separation, which can avoid problems such as jamming and burning caused by friction and impurities in the transmission process of the reducer, so as to achieve high precision and high reliability.
Hollow structure
The internal structure of the hollow reducer is hollow, which can transmit mechanical parts or pipelines through the hollow inner diameter, making it more suitable for the needs of robot technology.
Space-saving
The hollow reducer can allow the robot to bypass through the center of the reducer, thereby saving installation space.
Free installation
In addition to horizontal installation, the rotating platform can also be installed vertically or upside down, and the device design range is wider.
High output and high rigidity
The output crossed roller bearings of the rotating platform use radial and axial bearings to achieve high load and high rigidity.
High-precision positioning without backlash
Backlash-free, helical helical teeth, grinding machine helical teeth, and large gear modulus to achieve high torque. The repeated positioning accuracy is ±5 seconds, and the arbitrary angle segmentation can meet the digital control that the splitter cannot achieve, and the positioning accuracy is comparable to that of DD motor.
Customer selection case
Our company is here to help you every step of the way! We offer free selection services and customized solutions tailored to meet your unique needs. Whether you have specific project challenges or just need guidance, our dedicated team is committed to providing the perfect solution for you.
The following is a selection case of a model selection we performed for an Indian customer, and the customer was very satisfied with our selection.
Working conditions:
Load weight: 210kg
Hollow aperture: Not less than 140mm
Output speed: 15rpm
Installation method: horizontal installation
Recommended models:
HRT350JS-L2-24-110-145-M8
Selection model
1. First of all, we need to determine the diameter of the turntable (customer's working face), speed, disk load, etc., with these parameters, we can select the approximate model, calculate the torque, inertia, speed ratio, power of the matching motor, accuracy error, and whether the reserved safety factor value meets the requirements of use.
2. The operation is as follows: select the size of the turntable according to the size of the workpiece, and reduce the selection range according to the size of the turntable; According to the speed, the transmission torque, the reduction ratio is selected; According to the installation mode, select the positioning mode; According to the requirements of the working conditions, the accuracy is selected.
3. According to the corresponding data, such as the required torque (T), it is calculated by multiplying the sum of the load torque caused by friction impedance and the acceleration torque caused by moment of inertia by the safety factor:
Required torque T = (load torque [N.m] + acceleration torque [N.m] * safety factor)
If it was not confirmed the model you need, please provide the following information to us, our engineer shall make calculation and verify the model.
1) Weight of loading
2) Diameter of turntable
3) Max speed. Or how many seconds to rotate how many degrees?
4) Any drawing or photo of your application?
5) Horizontal, vertical or suspension installation?
What are the requirements for using hollow rotary tables?
1, The internal needle roller bearings should be routinely rust prevented and tested for rust.
2, Steer clear of collisions and steer clear of running across the connecting components in assembly.
3, Make careful it connects to the load side.
4, Use gloves to prevent rotating shaft direct contact between hands and other foreign objects.
5, To prevent damage, never disassemble and reassemble the good.
6, Check whether the model and product load complement one other. Temporarily stop using the input shaft if there is any sliding there.
7, Think about sounds. Should an obvious unusual noise arise, one should stop using, investigate the source of the noise, and rule out whether screws are loose.
Typical Application Scenarios
Automated assembly line: a rotating gluing station for mobile phone batteries that uses a HRT-85 reducer. A hollow channel lets rubber hoses and signal cables pass through. At 30 rpm, the positioning precision is less than 1 arc minute, and the gluing deviation is less than 0.02 mm.
Robot end effector: A mechanism for gripping and rotating a collaborative robot, made out of an HRH-120 reducer and a 400W servo motor. The robot can pick things up with air pressure through a hollow channel that weighs only 3.5 kg, which is light enough for its burden.
Precision testing equipment: A multi-sided PCB inspection table makes sure that the inspection lens and the board are always within 0.01 mm of each other.
Medical equipment: An infusion pump rotational assembly table that uses a HRTZ-200 reducer with a hollow channel for medical-grade cables. It has an IP65 protection grade that makes it safe for cleanroom use, and the noise level is ≤60 dB, which is what medical equipment needs.
FAQ
Q: Will running the gears under a lot of stress for a long time wear them out? What can be done to stop this?
A: When used correctly, this device doesn't wear down too much since its gears are toughened (three times more wear-resistant than regular gears) and it has a "preload + lubrication film" design. To keep things from getting worn out, keep these things in mind: Check the grease every three months and never run the machine without lubrication. The actual load should be less than 80% of the rated amount.
Q: Can it work with stepper motors? Will this change the accuracy?
A: It works perfectly with stepper motors, however the motor itself has the most effect on precision (stepper motors might lose steps). A servo motor (closed-loop control with error correction) is best if you need great precision. Servo motors are 30% to 50% more accurate at positioning than stepper motors, especially when they're moving slowly (≤5 rpm) or when the load changes.
Q: How can I stop the pipeline from rubbing against the inside wall of the hollow hole when I install it? There are three ways to make things better:
A: To prevent friction, put wear-resistant sleeves (like PTFE) around the pipeline.
Put guide rings (which the manufacturer can change) at both ends of the hollow hole to hold the pipeline in place.
Make sure that the overall diameter of the pipeline is less than or equal to 70% of the diameter of the hollow hole (for example, a 60mm hole can only fit a 42mm pipe), so that there is enough room for buffering.
Q: How can I fix strange noises or problems with accuracy?
A: Follow these steps to troubleshoot:
Use a torque meter to check for overload (measure the actual output torque);
Check to see if the motor and reducer are concentric (radial runout ≤ 0.02mm);
Take off the end caps and have a specialist check the gears for dirt or wear.
Most of the time, this is because of concentricity deviation or not enough lubrication, which may be fixed by making modifications.
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