{"id":30791,"date":"2026-07-04T00:51:23","date_gmt":"2026-07-04T00:51:23","guid":{"rendered":"https:\/\/www.leiliautoparts.com\/?p=30791"},"modified":"2026-07-04T00:52:04","modified_gmt":"2026-07-04T00:52:04","slug":"commercial-vehicle-wiper-motor-selection-guide","status":"publish","type":"post","link":"https:\/\/www.leiliautoparts.com\/zh\/commercial-vehicle-wiper-motor-selection-guide\/","title":{"rendered":"How to choose a commercial vehicle wiper motor? Decomposition of 4 major core parameter technologies"},"content":{"rendered":"
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1. Why is the wiper motor the “heart” of commercial vehicle safety systems?<\/h2>

The power of the windshield wiper motor for passenger cars is usually between 3050W, but the front windshield area of commercial vehicles (buses, trucks, engineering vehicles) is as large as 2.5 to 3.5 square meters, and the length of the wiper arm can reach 700 to 1000mm, and the wiper load is far from comparable to that of passenger cars. Once the motor torque is insufficient, it will cause the brush to vibrate and leave blind spots, or the motor will overload and burn out, which is enough to cause an accident in heavy rain or snow.<\/p>

According to industry data, motor failure accounts for more than 45% of the failure of commercial vehicle wiper systems, far higher than the wear of wiper blades (about 30%) and the loosening of connecting rods (about 15%). Therefore, choosing the right motor is the first barrier to ensure the reliability of the entire wiper system.<\/p>

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commercial vehicle wiper motor<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n

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2. Break down the 4 core parameters one by one<\/h2>

2.1 Torque and power: Do you have enough power? Look at these two numbers.<\/h3>

Torque is the core performance indicator of the wiper motor. The selection logic of commercial vehicles is completely different from that of passenger vehicles:<\/p>

<\/colgroup>
parameter<\/th>Typical value for passenger cars<\/th>Typical values for commercial vehicles<\/th>Introductions<\/th><\/tr><\/thead><\/table><\/div>
<\/colgroup>
Rated power<\/td>30~50W<\/td>60~180W<\/td>Commercial vehicles start from at least 60W, and large buses can reach 180W.<\/td><\/tr>
Rated torque<\/td>2~4Nm<\/td>7~25Nm<\/td>The torque directly determines whether the suction pressure of the scraper arm is sufficient.<\/td><\/tr>
Deadlock torque<\/td>10~15Nm<\/td>35~140Nm<\/td>The ability to overcome the initial resistance when ice and snow stick to the windshield<\/td><\/tr>
Working voltage<\/td>12V<\/td>12V \/ 24V dual voltage<\/td>Commercial vehicles generally have 24V electrical systems, and dual voltage compatibility makes them more flexible.<\/td><\/tr><\/tbody><\/table>

Selection suggestions:<\/strong><\/span><\/p>