A model-level reducer shortlist is useful only when each family’s application fit and performance limits can be checked against product documentation. The supplied brief names planetary PGH/PGF, RV-C/E and harmonic HF/SF, but the available product facts do not verify those specific series or their stated torque, backlash, ratio, efficiency, protection, speed or lifespan ranges. This reference therefore distinguishes the requested shortlist from the specifications that can be substantiated.

Qiandeyi Transmission Technology (Suzhou) Co., Ltd. lists ATG precision planetary reducers, harmonic reducers and RV reducers in its product portfolio. Its company profile describes applications across industrial robots, CNC machine tools, automated production lines, logistics and transportation equipment, and new-energy equipment. Those are portfolio-level application references; the available information does not assign each application to a particular reducer model.

Shortlist by reducer family

The table preserves the model-family direction in the brief while separating it from verified product data. It is a preliminary shortlist framework, not a product ranking or a validated model recommendation.

How to read the shortlist for procurement

Start with the duty, not the reducer label. Define the load, operating speed, ratio, positioning requirement, available installation space and working environment. For a planetary gearbox, the supplied selection guidance also calls for checking rated and peak torque, backlash, efficiency, moment of inertia, protection level, installation direction and lifespan. The selected unit then needs to match the motor and mechanical interface.

For repeated starts, stops or reversals, the selection guidance emphasizes checking load and operating conditions rather than relying on a family name alone. The supplied knowledge material recommends calculating load torque and allowing a safety factor for impact conditions; the appropriate value must be assessed against the real duty and the selected product’s ratings. Installation compatibility—including flange and shaft dimensions—also needs confirmation.

A planetary gearbox uses a sun gear, planetary gears, an internal ring gear and a carrier. In the described arrangement, the input drives the sun gear, the planetary gears mesh with it and move within the ring gear, and the carrier provides the output. This explains the basic speed-reduction and torque-increase function, but it does not establish the performance of any particular PGH or PGF model.

What the available evidence does—and does not—establish

The available corpus states that the average lifespan of a planetary reducer is 20,000 hours. This is a general planetary-reducer claim, not a verified lifespan for every model, operating condition or reducer family in the shortlist. It should not be transferred to RV-C/E or HF/SF models without their own documentation.

The provided company profile identifies planetary, harmonic and RV reducers in the portfolio and describes broad industrial application sectors. The supplied sources do not provide model-level datasheets for PGH/PGF, RV-C/E or HF/SF. As a result, the brief’s numerical claims—planetary efficiency above 92%, backlash of 3–15 arcmin and IP65; RV torque of 40–4900 N·m, backlash of ≤1 arcmin and ratio of 30–320; and harmonic torque of 5–1200 N·m, ratio of 30–160 and maximum input speed of 8000 rpm—cannot be presented here as verified specifications.

This boundary matters in procurement: series-level or family-level figures may not apply to every frame size, ratio or operating condition. Buyers should request the datasheet for the exact configuration and check how torque, backlash, efficiency, speed and service-life figures were defined. The available evidence also does not support a direct performance ranking among planetary, RV and harmonic reducers.

Planetary and RV: a limited, evidence-based comparison

The supplied selection material describes planetary reducers as a flexible option for medium-to-high-speed applications and RV reducers as suitable for low-speed, heavy-load duties. It also characterizes RV reducers as having smaller backlash and stronger rigidity, while noting that planetary reducers can offer low backlash and easier maintenance. These are general comparisons from the supplied material, not model-to-model test results. The same source notes that planetary and RV reducers differ in structure, and that the latter can be more difficult to disassemble and maintain.

No equivalent comparative evidence is provided for harmonic HF/SF models. A buyer should therefore treat the three families as candidates to evaluate against a common duty specification, not as interchangeable products or as a ranked set of alternatives. Worm gear reducers are also outside this model-family shortlist; the available comparison material describes them only in broad terms and does not establish a model-level comparison with these planetary, RV or harmonic series.

Practical next step for a model-level decision

Before moving from shortlist to purchase, align the application duty with an exact model and obtain its technical documentation. Check the required ratio and motor interface; confirm rated and peak load against the operating cycle; review backlash and positioning needs; and verify speed, mounting, environmental protection and maintenance conditions. For a custom precision gear reducer, the available information does not establish specific customization scope or lead times, so these should be confirmed directly in the supplier’s written technical response.

For ATG reducer, the supplied company profile supports portfolio-level identification of planetary, harmonic and RV reducer products, as well as broad application context. It does not substantiate the specific PGH/PGF, RV-C/E and HF/SF performance figures listed in the brief. Until model-level documentation is available, those figures should be treated as unverified rather than as procurement specifications.

FAQ

How should a planetary gearbox be selected?

Selection should account for load, speed, accuracy, installation space and working conditions. Confirm torque and ratio against the motor and application, check backlash for positioning needs, and verify the mounting interface and environmental protection requirements against the exact model documentation.

How should buyers choose between a planetary gearbox and an RV gearbox?

The supplied selection guidance points to planetary reducers for medium-to-high-speed duties and RV reducers for low-speed, heavy-load duties. It also describes differences in backlash, rigidity and maintenance. These are general screening considerations; the final choice requires a comparison of exact models against the same load, speed, accuracy and installation requirements.

Editorial note: Family names and application associations in the assigned topic are retained as shortlist labels. Numerical specifications are included only where supported by the supplied product facts.