Product Description
Product Description
The NB115 series planetary gearboxes are designed and machined as a single unit with special tapered roller bearings to provide high radial load, high torque, ultra-precision, and small size. The ND series uses in highly rigid industries such as fiber optic laser equipment, floor track equipment, robot seventh axis, Parallel robots (spider hand) machine tools, and rotating arms.
Product Name: High Precision Planetary Reducer
Product Series: NB115 Series
Product features: high torque, high load, ultra-precision, small size
Product Description:
Integrated design concept with high-strength bearings ensure the product itself is durable and efficient
A variety of output ideas such as shaft output, flange and gear are available.
1 arc minute ≤ backlash ≤ 3 arc minutes
Reduction ratios ranging from 3 to 100
Frame design: increases torque and optimizes power transmission
Optimised selection of oil seals: reduces friction and laminate transmission efficiency
Protection class IP65
Warranty: 2 years
Our Advantages
High torque
High load
ultra-precision
Small size
Detailed Photos
Product Parameters
| Segment number | Double segment | |||||||||||||
| Ratio | i | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | 80 | 90 | 100 |
| Rated output torque | Nm | 190 | 270 | 310 | 290 | 280 | 240 | 210 | 310 | 290 | 280 | 240 | 210 | 210 |
| Emergency stop torque | Nm | Three times of Maximum Output Torque | ||||||||||||
| Rated input speed | Rpm | 4000 | ||||||||||||
| Max input speed | Rpm | 8000 | ||||||||||||
| Ultraprecise backlash | arcmin | ≤3 | ||||||||||||
| Precision backlash | arcmin | ≤5 | ||||||||||||
| Standard backlash | arcmin | ≤7 | ||||||||||||
| Torsional rigidity | Nm/arcmin | 25 | ||||||||||||
| Max.bending moment | Nm | 6700 | ||||||||||||
| Max.axial force | N | 3350 | ||||||||||||
| Service life | hr | 20000(10000 under continuous operation) | ||||||||||||
| Efficiency | % | ≥94% | ||||||||||||
| Weight | kg | 9 | ||||||||||||
| Operating Temperature | ºC | -10ºC~+90ºC | ||||||||||||
| Lubrication | Synthetic grease | |||||||||||||
| Protection class | IP64 | |||||||||||||
| Mounting Position | All directions | |||||||||||||
| Noise level(N1=3000rpm,non-loaded) | dB(A) | ≤63 | ||||||||||||
| Rotary inertia | Kg·cm² | 0.47 | 0.44 | |||||||||||
Applicable Industries
Packaging Machinery Mechanical Hand Textile Machinery
Non Standard automation Machine Tool Printing Equipment
Certifications
Company Profile
DESBOER (HangZhou) Transmission Technology Co., Ltd. is a subsidiary of DESBOER (China), which is committed to the design, development, customized production and sales of high precision planetary reducer as 1 of the technology company. Our company has over 10 years of design, production and sales experience, the main products are the high precision planetary reducer, gear, rack, etc., with high quality, short delivery period, high cost performance and other advantages to better serve the demand of global customers. It is worth noting that we remove the intermediate link sale from the factory directly to customers, so that you can get the most ideal price and also get our best quality service simultaneously.
About Research
In order to strengthen the advantages of products in the international market, the head company in Kyoto, Japan to established KABUSHIKIKAISYA KYOEKI, mainly engaged in the development of DESBOER high precision planetary reducer, high precision of transmission components such as the development work, to provide the most advanced design technology and the most high-quality products for the international market.
| Application: | Motor, Machinery, Marine, Agricultural Machinery, CNC Machine |
|---|---|
| Function: | Change Drive Torque, Speed Changing, Speed Reduction |
| Layout: | Plantery Type |
| Hardness: | Hardened Tooth Surface |
| Installation: | All Directions |
| Step: | Double-Step |
| Customization: |
Available
| Customized Request |
|---|
How do epicyclic gear systems provide different gear ratios within a compact design?
Epicyclic gear systems, also known as planetary gear systems, offer the advantage of providing different gear ratios while maintaining a compact design. Here’s a detailed explanation:
Epicyclic gear systems achieve different gear ratios through the interaction of the sun gear, planet gears, and ring gear. The arrangement and engagement of these gears determine the resulting gear ratios. Here’s how it works:
1. Sun Gear and Ring Gear Sizes:
The gear ratio is influenced by the relative sizes of the sun gear and the ring gear. The number of teeth on these gears determines their effective radius and, consequently, the gear ratio. For example, a larger sun gear or a smaller ring gear will result in a higher gear ratio, providing gear reduction.
2. Planet Gear Engagement:
The planet gears in an epicyclic gear system engage with both the sun gear and the ring gear. The number of teeth on the planet gears affects the gear ratio as well. By altering the number of teeth on the planet gears, different gear ratios can be achieved. Increasing the number of teeth on the planet gears compared to the sun gear or the ring gear will result in a higher gear ratio.
3. Gear Arrangement:
The arrangement of the sun gear, planet gears, and ring gear also plays a role in providing different gear ratios. In a basic epicyclic gear system, the planet gears are evenly spaced around the sun gear and engage with the internal teeth of the ring gear. However, by modifying the arrangement, such as using multiple sets of planet gears or incorporating additional gears, more complex gear ratios can be achieved.
4. Multiple Stages:
Epicyclic gear systems can also utilize multiple stages to further expand the range of available gear ratios. Multiple stages involve connecting multiple sets of epicyclic gear systems in series. Each stage can have its own gear ratio, and by combining the gear ratios of each stage, a wide range of overall gear ratios can be achieved.
5. Compact Design:
Epicyclic gear systems offer a compact design due to the coaxial arrangement of the sun gear, planet gears, and ring gear. The planet gears are mounted on a carrier, which revolves around the sun gear while engaging with the ring gear. This arrangement allows for a high gear reduction or multiplication within a relatively small space, making epicyclic gears well-suited for applications where size and weight constraints are critical.
Overall, through the careful selection of gear sizes, gear engagement, gear arrangement, and the possibility of multiple stages, epicyclic gear systems provide different gear ratios while maintaining a compact design. This versatility in gear ratios makes them highly adaptable to a wide range of applications across various industries.
Can you explain the function of an epicyclic gear system in a helicopter’s rotor?
An epicyclic gear system, also known as a planetary gear system, plays a crucial function in a helicopter’s rotor. Here’s a detailed explanation:
1. Power Transmission:
The primary function of the epicyclic gear system in a helicopter’s rotor is to transmit power from the engine to the rotor blades. The system acts as a mechanical interface between the engine and the rotor, transferring torque and rotational motion effectively.
2. Gear Reduction:
The epicyclic gear system allows for gear reduction, which is essential in a helicopter rotor system. The high-speed rotation of the engine is converted into a lower rotational speed but increased torque at the rotor. This gear reduction enables the rotor blades to achieve the necessary lift and control, even with the high rotational speed of the engine.
3. Speed Control:
The epicyclic gear system provides speed control capabilities for the helicopter’s rotor. By adjusting the gear ratios within the system, the rotational speed of the rotor blades can be controlled. This speed control is vital for various flight maneuvers, such as takeoff, landing, hovering, and forward flight.
4. Torque Distribution:
An important function of the epicyclic gear system is to distribute torque evenly among the rotor blades. The system ensures that the torque generated by the engine is evenly distributed across all the blades, resulting in balanced lift and stable flight characteristics.
5. Autorotation:
The epicyclic gear system also enables autorotation, which is a critical safety feature in helicopters. During an engine failure, the system allows the rotor blades to continue rotating solely due to the upward airflow. This autorotation provides a controlled descent and allows the pilot to maintain some level of control over the helicopter’s flight path during an emergency.
6. Feathering:
Feathering refers to the ability to adjust the pitch angle of the rotor blades collectively. The epicyclic gear system incorporates mechanisms that enable feathering, allowing the pilot to change the pitch angle of all the blades simultaneously. This adjustment is used to optimize the helicopter’s performance in different flight conditions, such as reducing drag or increasing lift.
7. Mechanical Isolation:
The epicyclic gear system provides mechanical isolation between the engine and the rotor blades. This isolation helps dampen vibrations and reduces the transmission of engine-induced vibrations to the rotor system. It contributes to smoother operation, improved comfort, and reduced stress on the overall helicopter structure.
In summary, the function of an epicyclic gear system in a helicopter’s rotor includes power transmission, gear reduction, speed control, torque distribution, autorotation capability, feathering control, and mechanical isolation. These functions are critical for achieving efficient and safe helicopter operations, enabling lift generation, flight control, and maneuverability.
What is the role of a sun gear, planet gears, and ring gear in an epicyclic arrangement?
In an epicyclic gear arrangement, the sun gear, planet gears, and ring gear each have specific roles and functions. Here’s a detailed explanation:
1. Sun Gear:
The sun gear is the central gear component in an epicyclic arrangement. Its primary role is to provide the input rotational motion or power to the gear system. The sun gear is typically located at the center and is surrounded by the planet gears. It engages with the planet gears through meshing teeth, transmitting rotational force to them.
2. Planet Gears:
The planet gears are multiple gears that revolve around the sun gear in an epicyclic arrangement. They are mounted on a carrier, which holds and supports the planet gears. The planet gears mesh with both the sun gear and the ring gear. As the sun gear rotates, it causes the planet gears to rotate around their own axes while simultaneously orbiting around the sun gear. The planet gears transmit the rotational motion and torque from the sun gear to the ring gear.
3. Ring Gear:
The ring gear, also known as the annular gear or the outer gear, is the outermost gear component in an epicyclic arrangement. It has internal teeth that mesh with the planet gears. The ring gear provides the outer boundary of the gear system and engages with the planet gears, transferring the rotational motion and torque from the planet gears to the output or the next stage of the gear system. In some arrangements, the ring gear is fixed or held stationary, while in others, it can rotate.
The combination and interaction of the sun gear, planet gears, and ring gear in an epicyclic arrangement enable various gear functions, such as gear reduction, torque multiplication, speed control, and directional changes. The arrangement and engagement of these gears determine the gear ratios and overall performance of the gear system.
editor by CX 2023-10-24