The LOBISONG LB12038 is a compact, high-performance DC axial fan designed for reliable cooling in industrial, telecom, HVAC, and power electronics. Its 120×120×38 mm frame fits standard mounting, while the brushless DC motor ensures quiet, efficient operation. Available in 12V, 24V, and 48V, it delivers up to 150 CFM airflow and strong static pressure. The PBT UL94V-0 impeller and aluminum frame resist heat and vibration. Ball bearing rated 70,000 hours at 40°C. Supports PWM speed control, FG tach output, and RD alarm. Protections include polarity, overcurrent, and auto-restart. Operating range: -10°C to +70°C. Ideal for cabinets, servers, inverters, and medical devices.

Key Specs: 120×120×38 mm | 12V/24V/48V DC | 2000-3000 RPM | up to 150 CFM | 35-50 dB(A) | ball bearing | 70,000 hours | PWM/FG/RD optional.

Panel builders judge a cooling fan on three things: whether it fits, whether it lasts, and whether it still moves air once filters and ductwork push back. The LOBISONG LB12038 answers all three inside a standard 120×120×38 mm envelope, so this DC axial fan drops into an existing cut-out without redesigning the chassis.

The frame is die-cast aluminum, which stiffens the assembly and draws heat away from the motor. The impeller is molded in PBT rated UL94V-0, so it holds its shape under heat and rides out vibration, and seven molded blades move air efficiently at a finished weight of only 301.5 g.

A brushless DC motor drives the impeller through a shaft carried on ball bearings, which removes the brush wear that shortens the life of sleeve-bearing fans. Because 12V, 24V and 48V versions share the same cut-out, this DC axial fan serves several electrical platforms from one mechanical design. Contact LOBISONG for OEM specification.

1. Standard 120×120×38 mm Frame Fits Existing Cut-Outs

The 120×120×38 mm frame matches the mounting pattern used across cabinets, racks and power supplies, so this DC axial fan can replace an existing unit without touching the chassis. Aluminum construction keeps the assembly rigid and moves heat away from the motor.

2. Brushless DC Motor with Ball Bearings

A brushless motor removes brush wear, and the shaft runs on ball bearings rather than a sleeve. The result is a DC axial fan with low vibration across the whole speed range and stable output in equipment that cannot be taken offline for routine fan maintenance.

3. Three Voltage Versions: 12V, 24V and 48V

One mechanical design covers three electrical platforms, so a single panel cut-out serves equipment built around a 12V rail, an industrial 24V control voltage, or a 48V telecom and power-electronics supply. Procurement keeps one spare part number per voltage instead of stocking three frame sizes.

4. PWM Speed Control with FG Tach Output and RD Alarm

PWM speed control lets the host system vary fan speed instead of running the DC axial fan at full tilt. FG tach output reports actual rotation and RD alarm flags a locked rotor before electronics overheat. Reverse polarity, overcurrent and auto-restart protection are built in.

5. High Airflow in a Quiet 35-50 dB(A) Envelope

Depending on the voltage version, the fan runs between 2000 and 3000 RPM and delivers up to 150 CFM, with acoustics between 35 and 50 dB(A). The DC axial fan can be specified in the quietest variant that still clears the thermal budget, while blade and frame geometry hold static pressure where a cabinet is densely packed.

• Industrial Cabinets and VFD Enclosures: Through-flow for drives and control gear that cannot be derated, where this DC axial fan holds airflow against tight internal spacing.

• Servers and Telecom Equipment: High-density racks and outdoor cabinets, including 48V systems where the fan voltage matches the equipment bus directly.

• Inverters and Power Electronics: Forced convection across heat sinks and magnetics, where airflow has to hold up against fine fin spacing.

• HVAC Equipment: Air movement in air handling units, heat recovery ventilators and dehumidifiers, with the DC axial fan selected for continuous duty.

• Medical Devices and Dusty Industrial Sites: Quiet, monitored cooling for diagnostic equipment, filtration machinery and dust collectors in harsh workshops.

• Direct Manufacturer Cost Optimization: Factory-direct engineering and pricing lower BOM cost for OEM clients, and one part number covers 12V, 24V and 48V builds of this DC axial fan.

• Low Maintenance Over a Long Service Window: A brushless motor and ball bearings keep the fan running for years without lubrication or brush replacement.

• Customized Engineering Support: OEM options include lead wire length, connectors, PWM, FG and RD configuration, voltage version and private-label marking, so the DC axial fan is configured to your machine.

• Stable Supply for Repeat OEM Schedules: Samples ship ahead of volume orders, and capacity covers trial quantities as well as repeat build schedules with global shipping.

Q: Which voltage versions is the LOBISONG LB12038 available in?

A: 12V, 24V and 48V DC. All three versions share the same 120×120×38 mm frame, so one panel cut-out serves every voltage version.

Q: How much airflow does this DC axial fan deliver, and how quiet is it?

A: Up to 150 CFM, at speeds between 2000 and 3000 RPM depending on the voltage version, with noise between 35 and 50 dB(A).

Q: Can the fan be controlled and monitored by the host system?

A: Yes. PWM speed control is supported, with FG tach output for rotation feedback and RD alarm for rotor failure.

Q: What protections and operating range are supported?

A: Reverse polarity, overcurrent and auto-restart protection are integrated, and the fan operates between -20°C and +60°C with Class A insulation and ball bearings rated for 50,000 hours of motor life.