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Cycloidal pinwheel reducer 04

A cycloidal pinwheel reducer is a novel transmission device that employs the planetary gear principle and utilizes cycloidal–pin tooth meshing. The entire transmission system of a cycloidal pinwheel reducer can be divided into three sections: the input section, the reduction section, and the output section.

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Pipe fittings / Valves / Vessel-mounted accessories

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Product Description

1. Product Overview
A cycloidal pinwheel reducer is a novel transmission device that applies the planetary gear principle and employs cycloidal‑pin tooth meshing. The entire transmission system of a cycloidal pinwheel reducer can be divided into three sections: the input section, the reduction section, and the output section. An eccentric sleeve with a 180° phase shift is mounted on the input shaft; two roller bearings, known as swing arms, are installed on this eccentric sleeve, forming an H‑shaped mechanism. The central holes of the two cycloidal gears serve as raceways for the swing‑arm bearings on the eccentric sleeve, while the cycloidal gears mesh with a set of needle teeth arranged in a circular pattern on the needle gear, thereby constituting an internal‑meshing reduction mechanism with a tooth difference of one tooth. (To reduce friction, needle‑tooth sleeves are fitted onto the needle teeth in reducers with small speed ratios.)

2. Product Features
1. High speed ratio and high efficiency
A single-stage transmission can achieve a reduction ratio of 1:87 with an efficiency exceeding 90%; using a multi-stage design yields an even higher reduction ratio.

2. Compact structure and small size
Thanks to the use of planetary gear principles, the input and output shafts share the same axis, resulting in a compact and space‑saving design.

3. Smooth operation with low noise
The cycloidal pin‑gear mechanism features a large number of meshing teeth, a high overlap ratio, and a built‑in principle of smooth motion, thereby minimizing vibration and noise.

4. Reliable and long-lasting use
Because the key components are manufactured using bearing steel, they exhibit excellent mechanical properties; coupled with rolling friction, they deliver long-lasting durability and a extended service life.

1. It features strong overload capacity, excellent shock resistance, and a small moment of inertia, making it suitable for applications involving frequent starts and forward/reverse operation.