SD-U1 Series Harmonic Drive (Strain Wave Gear Reducer)

SD-U1 Series Harmonic Drive (Strain Wave Gear Reducer)

The SD-U1 series harmonic drive reducer is a type of precision gear mechanism designed for high-performance applications that require precise motion control. This series of harmonic drive reducers is widely used in various industries, including robotics, aerospace, semiconductor manufacturing, medical devices, and more.The SD-U1 series harmonic drive reducer is built upon the principles of harmonic drive technology, which consists of three main components: a wave generator, a flex spline, and a circular spline. The wave generator creates a wave-like motion that is transferred to the flex spline, causing it to flex and engage with the circular spline. This flexing action generates high torque output with extremely low backlash, allowing for precise and repeatable motion control. One of the key advantages of the SD-U1 series is its compact size. The harmonic drive design allows for a high gear reduction ratio within a small envelope, making it ideal for applications where space is limited.These harmonic drive reducers are also known for their exceptional positional accuracy. They have minimal backlash, which refers to the small amount of play or lost motion in the gears when changing direction. This characteristic makes them suitable for applications that require precise positioning, such as robotic arms or automated assembly lines. The SD-U1 series comes in various sizes and configurations to meet different application requirements. They can be customized with different gear ratios, output configurations (such as shaft or flange output), and motor interfaces to seamlessly integrate with different systems.

SD-U1 Series Harmonic Drive Reducer Features:

1. Ultra-flat - hollow bore structure2. High torque capacity3. High rigidity4. No backlash5. Excellent positioning and rotational accuracy6. Input and output coaxial

SD-U1 Series Harmonic Drive Reducer Structure:

SD-U1 Series Harmonic Drive Reducer Naming Rules:

SD-U1 Series Harmonic Drive Reducer Specifications:

SD-U1 Series Harmonic Drive Reducer Starting Torque Table:

reduction ratio/models	14	17	20	25	32
050	11	39	53	79	114
080	9	34	44	66	108
100	8.7	37	49	73	101
120	-	34	49	73	99
160	-	-	48	72	97

SD-U1 Series Harmonic Drive Reducer Crossed Bearing Performance:

Models	Roller pitch circle diameter	offset	Basic load rating		Allowable Moment Load Mc	Torque rigidity Km
	dp	R	Basic dynamic rated load cr	Basic static load rating	Nm	Nm/rad
	m	m	N	N
14	0.0503	0.0111	29	43	37	7.08
17	0.061	0.0115	52	81	62	12.7
20	0.070	0.011	73	110	93	21
25	0.086	0.0121	109	179	129	31
32	0.112	0.0173	191	327	290	82.1

SD-U2 Series Harmonic Drive Reducer Dimensions:

SD-U1 Series Harmonic Drive Reducer Dimensions:

SD-U1 Series Harmonic Drive Reducer Size Chart:

How Does the SD-U1 Series Harmonic Drive Reducer Work?

The SD-U1 series harmonic drive reducer operates based on the principles of harmonic drive technology. It consists of three main components: a wave generator, a flex spline, and a circular spline. Let's take a closer look at how each component works:Wave Generator: The wave generator is the input component of the harmonic drive reducer. It typically consists of an elliptical or wave-shaped disc with an offset bearing. When a torque or rotational force is applied to the wave generator, it creates a wave-like motion as it rotates. This motion is the driving force behind the harmonic drive mechanism.Flex Spline: The flex spline is a thin, flexible metal spline with teeth on the inner surface. It wraps around the wave generator and is designed to deform or flex under the influence of the wave motion created by the wave generator. The flex spline has fewer teeth than the circular spline, which creates a gear reduction effect.Circular Spline: The circular spline is a rigid outer ring with internal teeth that mesh with the teeth of the flex spline. The circular spline remains fixed or stationary while the flex spline flexes and engages with its teeth. As the wave generator rotates, the flex spline deforms and moves along the circular spline, transmitting torque from the input to the output.The interaction between these three components creates a unique gear reduction mechanism. When the wave generator rotates, it generates a wave motion that causes the flex spline to flex and engage with the circular spline. This engagement creates multiple points of contact between the teeth of the flex spline and the circular spline, resulting in a smooth and continuous transfer of torque.The gear reduction ratio is determined by the number of teeth on the flex spline and the circular spline. The flex spline typically has fewer teeth, which creates a larger gear reduction ratio, enabling high torque output relative to the input torque.

SD-U1 Series Harmonic Drive Reducer Application Scenario:

The SD-U1 series harmonic drive reducer has a wide range of applications across various industries. Here is an example application scenario where the SD-U1 series can be utilized:1. Aerospace: The aerospace industry often demands lightweight and compact mechanisms with high torque capacity. The SD-U1 series harmonic drive reducer can be employed in applications such as satellite deployment mechanisms, antenna systems, or actuation systems for aircraft control surfaces. Its precise motion control and low backlash make it suitable for critical aerospace applications.2. Semiconductor Manufacturing: Semiconductor manufacturing processes require extreme precision and repeatability. The SD-U1 series harmonic drive reducer can be used in wafer handling systems, inspection equipment, or lithography machines, ensuring accurate positioning and smooth motion during the manufacturing process.3. Robotics: The SD-U1 series harmonic drive reducer is commonly used in robotic systems that require precise motion control and high torque output. For instance, in industrial robotic arms, the SD-U1 series can be integrated into the joints to provide accurate positioning and smooth motion. The compact size of the harmonic drive enables efficient space utilization within the robot's structure.4. Medical Devices: The medical industry frequently relies on precise and compact motion control components for various applications. The SD-U1 series strain wave gearbox can be used in medical devices such as surgical robots, imaging equipment, or prosthetic limbs, where precise motion control is crucial for successful outcomes.5. Automation and Packaging: In automated assembly lines and packaging machinery, the SD-U1 series strain wave gear reducer can be employed to control the movement of conveyor belts, robotic arms, or indexing tables. Its compact size and high torque output make it suitable for applications in confined spaces, while its precise motion control ensures accurate product handling and positioning.

Why Choose  Raydafon's Harmonic Drive Reducer?

Raydafon Technology Co., Ltd. is a gearbox manufacturer with a core supply system, and has more than 8,000 cooperating customers. Since its establishment, Raydafon has joined hands with partners in the industry to build factories all over the country, introduced advanced production equipment and precision monitoring equipment, and continuously innovated, researched and developed, and perfected its products. Raydafon provides domestic and foreign customers with a comprehensive range of gearmotors and a diversified range of gearboxes to meet the different needs of customers in various fields.Our main products include: planetary gearboxes, RV gearboxes, hollow rotary platforms, miniature gearboxes and matching speed controllers, miniature gearmotors, worm gearboxes, DC brushless gearmotors, three-phase asynchronous motors, vertical and horizontal gearmotors, torque reducers, cross steering gearboxes, harmonic reducers, and other series of gearmotors and their matching products. Many of them are of modularized design. Adopting new equipment and new technology, the products have better internal quality, smaller volume, lighter weight and more beautiful appearance. The products are widely used in: lithium equipment, laser equipment, engineering equipment, CNC machine tools, machinery production, non-standard automation, automobile manufacturing, aviation field, printing machinery, paper making, robotics, packaging machinery, filling, solar energy equipment, medical and pharmaceutical, testing instruments and many other industries.