Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
Input shaft, planetary pinion gear
This is a set of high-precision metal gears and shaft‑type transmission components, manufactured from high‑strength alloys and steels through precision turning and hobbing/involute gear shaping. The surfaces exhibit a uniform matte metallic finish, with well‑defined tooth profiles, excellent coaxiality, and tight tolerance control. The parts include input shaft gears, planetary gears, spline sleeves, stepped shaft gears, and other configurations, specifically engineered for precision drive systems. They are widely used in industrial automation, robotics, new‑energy equipment, and similar applications, delivering core transmission functions such as power transmission, speed reduction and multiplication, and torque distribution, while offering superior wear resistance, high coaxiality, and stable transmission performance.
- Product Description
-
1. Material and Craftsmanship
- Core material : Primarily made from high-quality alloy steels such as 40Cr and 20CrMnTi, certain components can undergo heat treatments—including quenching and tempering, carburizing, and quenching—to enhance tooth surface hardness, wear resistance, and fatigue strength, thereby meeting the transmission requirements under high-load and high-speed operating conditions.
- Processing technology : The shaft body and base are machined using CNC turning, while the gear teeth are formed by hobbing or shaping. Some components undergo gear grinding, achieving a tooth profile accuracy of 6–7 grades according to GB/T 10095. The shaft and gears are machined in a single setup, ensuring coaxiality and reducing vibration and noise during transmission. The surface is treated with anti-rust and passivation processes to enhance corrosion resistance.
2. Analysis of Part Structure and Function
Location Part Appearance Features Typical Applications and Functional Speculations Top left Double‑stage gear with a cylindrical sleeve; the sleeve features an internal bore, and its outer circumference is evenly toothed. A double‑gear shaft enables two‑stage gear transmission; the inner bore of the sleeve is designed to mate with the drive shaft, while the dual‑gear profile can engage with different gears simultaneously, making it suitable for multi‑speed transmission systems. Middle and upper Large gear with a long shaft (input shaft gear), featuring a stepped locating structure on the shaft body and a center hole at the top. Input shaft gear assembly: the shaft serves as the power input, while the gear provides the transmission engagement. A stepped structure is employed for bearing positioning and assembly alignment, commonly used in the power input stage of gearboxes and electric motors. Upper right Cylindrical bushing and straight-tooth external gear integrated part; the bushing has no step, and the tooth profile is evenly distributed. Planetary gears / transmission gears, with the shaft sleeve serving as the mounting datum; the gears mesh with other gears to transmit torque, featuring a compact structure and compatible with planetary gear reducers and precision drive modules. Left center Small single straight-tooth gear, with a short-shaft body and a center hole at the top. Planetary gears / Small-module transmission gears, characterized by their compact size and fine tooth profiles, are commonly used in the planetary gear units of planetary reducers to achieve torque distribution and speed reduction. Zhongzhong Stepped double‑stage gear: the lower section features a large flange body, while the upper section adopts a two‑stage tooth profile and is equipped with mounting holes. Composite transmission gear; its two-stage tooth profile enables meshing at different transmission ratios. Flanges and mounting holes facilitate secure installation, making it compatible with multi-axis drive systems. Right center Single-stage spur gear + short shaft sleeve integrated component, with an internal bore in the shaft sleeve. Driven gear / idler gear; the inner bore of the bushing is designed to mate with shaft components, while the gear serves as the meshing transmission element, transmitting torque and altering the direction or speed of rotation. Lower left Internal‑bore stepped gear ring / spline sleeve component, with a dense tooth profile distributed on the outer circumference and no shaft‑body structure. Internal gear ring / gear sleeve component: the inner bore is designed to interface with a shaft or bearing, while the external teeth can mesh with other gears or serve as a spline sleeve for torque transmission; it is commonly used in planetary gearbox gear-ring assemblies. Bottom right Small gear ring / internal gear sleeve component, with a double‑step shaft sleeve and a finely spaced external tooth profile. Miniature drive gear ring, with a compact footprint, designed to fit small precision drive systems—such as servo motors and miniature gearboxes—enabling torque transmission and speed reduction. 3. Overall Characteristics and Application Scenarios
- Transmission performance : The components feature high gear‑tooth accuracy and excellent coaxiality, resulting in low vibration and noise during operation, high power transmission efficiency, and suitability for precision drive applications involving high speeds and heavy loads.
- Structural adaptability : Covering various configurations such as single-stage gears, duplex gears, shaft-mounted gears, and ring gears, these components can be flexibly combined to suit transmission systems with different gear ratios and installation space constraints, including planetary gear reducers, servo drive modules, and industrial robot joints.
- Durability Heat treatment enhances the hardness and wear resistance of the gear tooth surface, reducing wear and the risk of failure during long-term meshing, thereby extending equipment service life and lowering maintenance costs.
Keywords:
Submit your information
Note: Please provide your email address. Our specialists will contact you as soon as possible!