中文版
Description
Nabtesco BCT-304-51 high-precision cycloidal reducer
Overview
Nabtesco BTC-304-51 is a high-precision Cycloid Reducer of the BTC series produced by Nabtesco Corporation of Japan. Nabtesco is a globally leading manufacturer of precision reducers, and its products are renowned for their extremely high rigidity, precision and reliability. The BTC series is one of its core products, specifically designed for industrial robots, precision machine tools, semiconductor manufacturing equipment, and other automation fields that require high-precision positioning and high-torque output.
This reducer adopts a unique cycloidal pinwheel meshing principle, achieving an extremely high reduction ratio, astonishing torque capacity and nearly zero backlash motion transmission. It is the core transmission component connecting the servo motor and the actuator in the precision motion control system and is hailed as the “joint” of the robot.
Core features and advantages
1. Ultra-high rigidity and torque capacity
It adopts an integral needle roller bearing and large output bearing design, which enables it to withstand extremely large radial, axial and moment loads, has strong impact resistance, remains stable even under heavy loads, and has almost no elastic deformation.
Compared with harmonic reducers, it has higher rigidity and is suitable for application scenarios that require high loads and shock resistance.
2. High precision and zero backlash
Through precise processing and unique tooth profile design, an extremely small or even zero transmission backlash has been achieved. This ensures extremely high motion positioning accuracy and repeat positioning accuracy, and avoids the “backlash” error when the motion reverses.
The high-precision rotational transmission efficiency makes the robot’s movement smoother and more accurate.
3. High reduction ratio and compact design
Single-stage transmission can achieve a high reduction ratio of 51:1 (as indicated by “51” in the model), with a compact structure that provides a powerful reduction effect and output torque within a limited space.
Compact size and lightweight design make it particularly suitable for multi-joint industrial robots that have strict requirements for space and weight.
Nabtesco BTC-304-51A
4. High efficiency and long service life
The cycloidal transmission principle results in a large number of meshing teeth, a large contact area, and a low pressure per unit area. Therefore, the wear is extremely low, the operating efficiency is high, and the service life is extremely long, usually reaching tens of thousands of hours.
It is maintenance-free for life and requires no lubrication, reducing the maintenance cost and workload in the later stage.
5. Outstanding reliability
Nabtesco is renowned for its ultra-precise manufacturing processes and strict quality control. BTC reducers can still maintain long-term stable and reliable performance under harsh working conditions such as high speed, high load and high cycle.
Typical application fields
Due to its outstanding performance, BTC-304-51 is widely used in fields with extremely high requirements for precision and rigidity
• Industrial robots: Mainly used for heavy-duty joints such as the base (J1), large arm (J2), and shoulder of robots that require high torque, high rigidity, and high precision.
• Precision machine tools: Rotary worktables, tool magazine drives, etc. for CNC machine tools.
• Semiconductor manufacturing equipment: lithography machines, wafer handling robots, packaging equipment, etc.
• Aerospace: Satellite antenna drive mechanisms, simulation platforms, etc.
• Medical equipment: High-precision medical robots, testing equipment, etc.
Technical Specification Summary (Based on the General Characteristics of the BTC Series)
• Manufacturer: Nabtesco Corporation
• Series Model: BTC-304-51
◦ BTC: Series Name (High Rigidity Cycloidal Reducer)
◦ 304: Frame Size or center height, representing its external dimensions and capacity grade.
◦ 51: Reduction Ratio, which is 51:1 here.
• Reduction ratio: 51:1
• Structure: Standard flange output type, with input hole (direct connection to servo motor)
• Backlash: Extremely low, usually less than 1 arc-min (arc minute), and can even reach zero backlash.
• Rated torque: High (for specific values, please refer to the official selection manual corresponding to the 304 size).
• Instantaneous maximum torque: It can reach several times the rated torque and has excellent impact resistance.
• Lubrication: Long-lasting grease has been added at the factory, requiring no maintenance for life.
Please contact Sunny sales@xiongbagk.cn for the best price.
➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com
