Technical Material
Operating Precautions for Fan
Operating temperature: Refer to the specifications table for each model.
Storage temperature: -20 to +70˚C / -30 to +70˚C (Varies for each model / Non-condensing)
Humidity (operating and storage): 20 to 85% RH (Non-condensing)
Rapid change in temperature may cause condensation. Prevent condensation when storing. Condensation may affect lubrication performance and insulation.
For the specification of rated voltage and voltage range, please check the catalog or drawing for the model number.
Use of voltage exceeding the specified range may lead to performance degradation, device failure, or fire hazards. Do not apply voltage that exceeds specifications to the fan.
An electronic circuit is used for the DC fan. For power supply, use power with ripple less than 5% with low line noise and surge to prevent electronic circuit trouble.
The fan motor is equipped with a precision ball bearing. Therefore, please handle the motors carefully in order not to shock the bearings.
| There are no limitations on the installation direction of fans or blowers. Fans have symbols on the fan indicating the airflow direction and blade rotation direction. When installing, use these symbols to check the airflow direction. |
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This shows the recommended values for the screw torque when installing the fans. If the tightening torque is higher than the recommended values, the fan can be deformed or damaged.
Use care when tightening. Also, be sure to always use a fan with a ribbed structure when securing by screws with both flanges.
DC fan
| Fan mounting hole diameter [mm] | Nominal screw diameter | Recommended screw torque |
|---|---|---|
| ø3.5, ø3.7 | M3 | 0.44 N･m max. |
| ø4.3, ø4.5 | M4 | 0.78 N･m max. |
| ø4.3, ø4.5 | M4 | 0.98 N･m max. (ø172 mm×51 mm, ø172 mm×150 mm×51 mm, ø200×70 mm) |
AC fan
| Fan mounting hole diameter [mm] | Nominal screw diameter | Recommended screw torque |
|---|---|---|
| ø3.5, ø3.7 | M3 | 0.44 N･m max. |
| ø4.3 | M4 | 0.58 N･m max. (120 mm×120 mm max.) |
| ø4.3 | M4 | 0.78 N･m max. (ACDC fan, ø172 mm) |
| ø5.5 | M4, M5 | 0.78 N･m max. (160 mm×160 mm) |
Regarding plastic frame, we have a option ribbed and ribless about mounting. Please use preferred type up to your application. Please use ribbed fan in case that you hook fan up clamping either side fan mounting hole target. (According to the model, only models with or without ribs are available.)
*Use a fan with a rib structure when securing by screws with both flanges.
When securing screws to ribless plastic frame models, use a flange to secure on one side.
Last updated: September 2024