RV Cycloidal Pin Wheel Reducer

The precision cycloidal reducer delivers overall performance superior to comparable products, easily achieving high-ratio transmission with low backlash, high torque, high rigidity, overload resistance, and consistently stable transmission accuracy. It meets the stringent demands for dynamic response and repeatability—as well as the test of durability—required by robot joints, CNC machine tools, and precision rotary tables, while ensuring smooth power output under heavy-load conditions, readily handling extreme challenges such as shock loads and frequent start-stop cycles. With further structural optimization, the precision cycloidal reducer can achieve a more compact size and lighter weight. With its outstanding performance, the precision cycloidal reducer has become the ideal choice for high-end equipment manufacturing.

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All RV Cycloidal Pin Wheel Reducer

RV Cycloidal Pin Wheel Reducer — Product Introduction
The RV Cycloidal Pin Wheel Reducer is a high-precision, compact gear reducer that combines a spur gear first stage with a cycloidal (epicyclic pin-wheel) second stage in one housing. Thanks to this two-stage structure, it achieves high reduction ratios (typically 11:1 to 121:1, up to 185:1 in multi-stage) with excellent torsional rigidity and shock load capacity — several times higher than ordinary planetary reducers.
Key features:

High precision: backlash ≤ 1 arc-min, ideal for servo applications
High torque density: compact flange-mounted design delivers large torque in a small footprint
Excellent shock resistance: the cycloidal gear engages multiple teeth simultaneously (over 1/3 of teeth in contact), giving strong overload and impact tolerance
Low noise & smooth operation: rolling contact instead of sliding, with low vibration and long service life (L10 > 20,000 hours)
Low maintenance: grease-lubricated, sealed for life, no oil change required
Wide mounting options: input flange matches major servo motor brands (customized motor adapters available); output options include solid shaft, hollow shaft, and shrink disc

Typical applications: industrial robots and robot joints, CNC machining centers, ATC/ATC tool changers, packing and filling machines, semiconductor equipment, medical devices, and printing machinery — wherever high positioning accuracy and reliable torque transmission are required.

Q1: What is the difference between an RV reducer and a planetary reducer?
A: The RV reducer uses a two-stage design — the first stage is a spur gear reduction, and the second stage is a cycloidal pin-wheel mechanism where multiple teeth are in contact at the same time. Compared with a planetary reducer of the same size, the RV reducer offers higher torque density, better shock resistance (roughly 3–5 times), and greater torsional rigidity. Planetary reducers are more cost-effective for general applications, while RV reducers are preferred for high-precision, high-impact, and high-load applications such as robot joints and heavy-duty rotary axes.
Q2: Can the RV reducer be matched with our own servo motor?
A: Yes. The input flange and shaft coupling can be customized to fit virtually any servo motor brand (e.g., Panasonic, Mitsubishi, Yaskawa, Delta, Siemens, etc.). Please provide your motor's flange size, shaft diameter and length, keyway dimensions, and mounting pilot diameter, or simply the motor datasheet/model number — we will machine the adapter accordingly.

Highly customizable product, lead time is longer than standard items.
Please contact us for detail delivery lead time.

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