Cooling within your installation space
Evaluate this axial fan for equipment ventilation or local component cooling. Check your mounting space and the resistance of the actual enclosure, grille or filter.
Match the fan to your installation space, airflow requirement and acoustic target. Values above span the listed model variants. Choose one complete variant from the specification table.
| Parameter | Value | Unit |
|---|---|---|
| Series type | BY1238 | |
| Dimensions | 120x120x38mm | mm |
| Frame Type | Black PBT (UL94V-0) | |
| Impeller | Black PBT (UL94V-0) | |
| Bearing | Two Ball & (Sleeve or Hydraulic Bearing) | |
| Operation Temperature | -10℃~70℃ (Ordinary humidity) | |
| Storage Temperature | -40℃~80℃ (Ordinary humidity) | |
| Lead wire | (+) Red,(-) Black,(FG/RDYello，(PWM) Blue | |
| Safety | CE approved, RoHS | |
| Ingress of Protection | IP42 or IP55 | |
| Unit Weight | ：245g |
| Model No. | Grade | Op. Voltage (VDC) |
Current (A) |
Power (W) |
Speed (RPM) |
Air Flow (CFM) |
Air Flow (m³/min) |
Static Pressure (mmH₂O) |
Static Pressure (Pa) |
Noise (dBA) |
|---|---|---|---|---|---|---|---|---|---|---|
| HR1238HD2 | HD | 15~30 | 1.15 | 27.6 | 4,000 | 186.78 | 5.29 | 14.71 | 144.26 | 59 |
| HR1238MD2 | MD | 15~30 | 0.45 | 10.8 | 3,000 | 137.31 | 3.89 | 8.33 | 81.69 | 52.8 |
| HR1238LD2 | LD | 15~30 | 0.15 | 3.6 | 2,000 | 89.53 | 2.54 | 3.77 | 36.97 | 43.9 |
HD = High Speed | MD = Medium Speed | LD = Low Speed
| Motors Protection | Signal Output | Speed Control | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RP | AS | CS | CL | OV | SS | FG | RD/RD/b | LD | PPWM | VPWM | TC | RC |
| ● | ● | ● | ● | ● | ● | ● | ● | ○ | ● | ○ | ● | ○ |
● Supported ○ Not available
Match the fan to your installation space, airflow requirement and acoustic target. Use the checks below to shortlist the correct configuration before requesting a quote or sample.
Evaluate this axial fan for equipment ventilation or local component cooling. Check your mounting space and the resistance of the actual enclosure, grille or filter.
The listed dimensions are 120x120x38mm. Verify hole positions, clearance and airflow direction against the drawing before installation.
This page lists a 24V rated supply. Check the selected model’s operating voltage, current and power before connecting it to your system.
For the highest listed airflow, compare HR1238HD2 (186.78 CFM) with the other variants in the table.
For the lowest listed noise, compare HR1238LD2 (43.9 dB(A)). Check that its airflow and pressure still meet your requirements.
Use the Performance section to compare flow at your required pressure. Send your target operating point with your inquiry.
Maximum airflow and maximum static pressure describe different points on a P–Q curve. They are not achieved simultaneously. Select one complete model variant and evaluate it with your actual air path.
| Installation | Review the Dimensions section, then confirm your mounting interface, outlet clearance and connector pinout. |
|---|---|
| Electrical supply | This page lists a 24V rated supply. Check the selected model’s operating voltage, current and power before connecting it to your system. Include startup requirements and supply tolerances in your inquiry. |
| Operating environment | Listed operating temperature: -10℃~70℃ (Ordinary humidity). Share your actual ambient conditions, dust, moisture and duty cycle for configuration review. |
| Bearing selection | Listed bearing information: Two Ball & (Sleeve or Hydraulic Bearing). Confirm the ordered bearing option, mounting orientation and expected operating conditions. |
| Control & monitoring | Listed functions: Reverse polarity protection; Automatic restart; Constant speed; Current limiting; Overvoltage protection; Soft start; Tachometer signal output; Alarm signal output; PWM speed control; Thermal speed control. Confirm the functions, signal levels, wire count and pinout of your selected version. Do not assume every connector or wiring option includes every listed function. |
| Project requirements | Tell us your cable length, connector, speed-control and protection requirements. Ask which options can be supplied for this model, and request the relevant compliance documents for the ordered configuration. |
| Technical documents | Ask for the datasheet for the exact model and configuration in your inquiry. |
For the highest listed airflow, compare HR1238HD2 (186.78 CFM) with the other variants in the table. For the lowest listed noise, compare HR1238LD2 (43.9 dB(A)). Check that its airflow and pressure still meet your requirements. Share your thermal or airflow target, installation space and noise limit if you need help shortlisting a version.
Installed airflow depends on system resistance and the selected operating point. Use the Performance section to compare flow at your required pressure. Send your target operating point with your inquiry. Test the selected version with the actual enclosure, grille, filter or duct.
Include your connector specification, cable length, pinout and control requirements in the inquiry. We will review which options are available for HR1238 24V K2 and confirm the configuration before quotation.
Request the reliability information, lifetime test conditions and compliance documents applicable to the exact model and configuration. Share operating temperature, duty cycle and your market requirements so the information can be reviewed for your project.
Ask for sample and production quotations with your quantity, configuration and destination. Confirm MOQ, availability, production lead time and warranty terms in the quotation for this order.
Send the information you already have. If your specification is still developing, describe the equipment and the problem you need to solve.
Ask for a model recommendation, configuration review, technical documents and a quotation covering price and delivery.
Submit your requirements for HR1238 24V K2. Include your selected variant, quantity and project requirements to request pricing, configuration guidance and delivery details.
