---
title: "RunDongFang Innovates to Solve Heat Dissipation Issues of Permanent Magnet Industrial Large Fans"
url: https://tiercooling.com/posts/rundongfang-innovates-to-solve-heat-dissipation-issues-of-permanent-magnet-industrial-large-fans/
date: 2026-06-29
modified: 2026-09-28
lang: en
author: "info@tiercooling.com"
description: "With the continuous improvement of permanent magnet material performance and the development of motor technology, permanent magnet motors have been widely applied across all sectors of the national economy. Keeping..."
categories:
  - "News"
image: https://tiercooling.com/wp-content/uploads/2026/09/news-864.jpg
word_count: 372
---

# RunDongFang Innovates to Solve Heat Dissipation Issues of Permanent Magnet Industrial Large Fans

With the continuous improvement of permanent magnet material performance and the development of motor technology, permanent magnet motors have been widely applied across all sectors of the national economy. Keeping pace with this trend and “starting from lightweight design,” RunDongFang’s professional R&D team has developed a [permanent magnet industrial large fan](\"https://www.rundongfrang.com/news/\") that has received an enthusiastic response and widespread acclaim.

![](https://rundongfang.com/wp-content/uploads/0032.jpg)

A permanent magnet motor is an electric motor whose rotor has built-in permanent magnets. It offers numerous advantages such as reliable operation, small size, light weight, low losses, and high efficiency, making it a super-premium efficiency motor. Because high-performance permanent magnet materials are used to provide the magnetic field, the air-gap magnetic field of a permanent magnet motor is stronger than that of an induction motor, greatly reducing the motor’s volume and weight. However, this improved operating efficiency also brings heat dissipation challenges. When exposed to excessively high or low temperatures, under the armature reaction caused by surge currents, or during severe mechanical vibration, a permanent magnet motor may suffer irreversible demagnetization or loss of magnetism, degrading motor performance or even rendering it unusable. Therefore, heat dissipation for permanent magnet motors is critically important.

![](https://rundongfang.com/wp-content/uploads/52524.jpg)

Most ordinary permanent magnet motors use open-type heat dissipation or add a sunflower-style heatsink at the bottom. With open-type heat dissipation, the motor is completely exposed; in factory workshops with poor environmental conditions and heavy smoke and dust, prolonged exposure easily allows dust, oil, and moisture to enter, causing heat accumulation or short circuits and shortening the large fan’s service life. Meanwhile, a sunflower-style heatsink increases the weight of the industrial large fan, which not only contradicts the lightweight design philosophy but also, over long-term use, leads to damage due to reduced heat dissipation efficiency caused by dust buildup on its surface.

![](https://rundongfang.com/wp-content/uploads/32.jpg)

To address this, RunDongFang’s R&D team has innovatively developed end-cap heat dissipation. The precision die-cast end cap consists of radial cooling fins and a high-thermal-conductivity aluminum alloy, protecting the motor while improving heat dissipation efficiency and extending its service life. To provide customers with a better user experience, we keep striving and innovating through learning, delivering high value-added products, expert pre-sales and after-sales service, and comprehensive solutions, making purchase and use more convenient for our customers.