Motor application in automatic cat litter boxes

According to the 2026 China Smart Pet Products Industry White Paper, the average after-sales repair rate of household automatic cat litter boxes has exceeded 17%, among which motor failure, sand jamming and excessive noise account for 68% of total after-sales orders, while the industry has been stuck in two fatal misunderstandings: some blindly adopt an all-brushless motor solution for gimmicks, increasing BOM costs by 25%-35% without solving core pain points, while others use brushed motors for low prices, leading to carbon brush wear and torque attenuation of more than 30% in the main drive within 3-6 months, and ultimately a surge in after-sales problems and collapsed reputation.

As a mass production supplier deeply engaged in the micro motor field for many years, Huajuntong has broken away from the industry's strange circle of "brushless-only theory" and "low-price-only theory", and provides automatic cat litter box brands with implementable, verifiable full-link power solutions that balance performance and cost based on the working condition adaptation logic of "main drive determines survival, auxiliary drive controls cost", with all parameters being actual measured values in mass production and fully meeting the review standards of professional R&D engineers.

As the core power source of automatic cat litter boxes, the drum screening mechanism operates under extreme conditions of frequent forward and reverse rotation, high dust intrusion, and heavy load fluctuations for a long time. It is the "lifeline" of the whole machine reliability and the only part in the industry that must be equipped with brushless motors as standard, which is also the core anchor of Huajuntong's solution.

For this core scenario, Huajuntong mainly promotes the 36mm brushless planetary gear motor regular mass production series, which perfectly covers general single/multi-cat models within 70L on the market. All parameters are marked with standard test conditions without any false labeling.

Power performance: Rated torque 8-15kg·cm, peak stall torque 20-30kg·cm, easily handling extreme conditions such as bentonite clumping and foreign body jamming, completely eliminating sand jamming and shutdown; rated load speed precisely controlled at 8-15rpm, low-speed high-torque transmission, ensuring stable screening without sand splashing or dust raising.

Noise performance: Strictly in accordance with the universal industry test standard GB/T 10069.1, the measured A-weighted sound pressure level is 43–46 dB at 1 meter under rated load; with machined hobbed planetary gears, it can be optimized to 42–44 dB, eliminating customers’ additional modification costs of sound insulation cotton and shock absorbers, and solving the pain points of cat stress and night disturbance from the source.

Service life and safety: Brushless electronic commutation structure fundamentally eliminates torque attenuation and jamming caused by carbon brush wear. Mean time between failures (MTBF) under rated load ≥ 5,000 hours, 8–10 times that of traditional brushed main drives under the same working conditions. Built-in driver board is standard with stall, overload, and overcurrent protection, seamlessly compatible with the whole machine infrared/gravity safety sensor system. It can achieve millisecond-level shutdown when a cat enters, fully complying with safety standards for household smart devices.

Huajuntong rejects one-size-fits-all ineffective over-engineering and fully aligns with mainstream mass production selections in the industry. For non-core auxiliary mechanisms, we provide a dual-track adaptation solution of brushed and brushless motors, maximizing BOM cost control for brands while ensuring functional performance.

Waste box push-pull and locking mechanism: For intermittent start-stop and low-load working conditions, we mainly promote 24mm brushed spur gear motors with rated torque of 3-6kg·cm, achieving precise sealing and locking to prevent odors. Cost is 32%-38% lower than brushless solutions at the same performance; brushless versions of the same specification are available for high-end models.

Odor removal fresh air circulation system: For 24-hour continuous low-load operation, it is equipped with a 38mm outer-rotor brushless fan motor. The semi-closed dustproof structure blocks cat litter dust intrusion. The measured noise is 41-44dB at 1 meter under rated load, MTBF ≥ 5000 hours, no-load current ≤ 0.2A, ensuring low power consumption for long-term use.

Automatic sand refilling/stirring mechanism: For intermittent start-stop and self-locking sand leakage prevention applications, we mainly promote 20mm brushed worm gear motors with built-in mechanical self-locking to eliminate sand leakage and over-refilling. Cost is 35%-40% lower than brushless solutions, perfectly meeting the cost control needs of entry-level models.