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Square black metal fan with thick frame and two wire guards

BGears

BGears b-Blaster-AC 120x38 120mm 38mm 2800 RPM case fan

SKU CH-NB8T-0AGS5 MPN b-Blaster-AC 120x38

AC-powered 120 mm case fan spins at 2800 RPM for 123 CFM airflow at 44.8 dBA

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • CompatibilityCase
  • Fan Size120mm
  • Fan Thickness38mm
  • High airflow of 123 CFM moves heat fast
  • 2800 RPM delivers strong cooling pressure
  • Dual ball bearing extends operational life
  • Heavy aluminium frame resists vibration and wear
  • Impedance protection prevents overheating if rotor jams

Built for AC-powered cooling projects

This 120 mm case fan runs directly from 100-125 V mains supply, removing the need for a separate DC power source. It targets builders who need high airflow in industrial enclosures, server racks or custom ventilation rigs where AC power is already present. The heavy-duty cast aluminium frame and dual ball bearings are chosen for continuous-duty reliability.

Thermals, noise and power in normal use

At 2800 RPM the fan moves 123 CFM while producing 44.8 dBA, a level the maker notes can be high for quiet environments. Impedance protection prevents overheating if the rotor is blocked. The AC motor draws power straight from the supplied 4 ft non-polarised cord, so no motherboard header or fan controller is involved.

38 mm thickness decides fit

The 38 mm frame depth is the critical dimension; standard 25 mm mounting points will not accept this fan. Buyers with slim cases or tight clearances should verify spacing before ordering. The package includes two guards, a screw set with 60 mm hardware and an open wire lead for alternative wiring.

Highlights

  • High airflow of 123 CFM moves heat fast
  • 2800 RPM delivers strong cooling pressure
  • Dual ball bearing extends operational life
  • Heavy aluminium frame resists vibration and wear
  • Impedance protection prevents overheating if rotor jams

Specifications

BrandBgears
Seriesb-blaster AC 100V-125V Series
Modelb-Blaster-AC 120x38
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
CompatibilityCase
Fan Size120mm
Fan Thickness38mm
Bearing Type2 Ball
RPM2800 +/- 10% RPM
Air Flow123 CFM
Noise Level44.8 dBA
ColorBlack
FeaturesAC 100 - 125V fan designed for cooling and ventilation projects.
Heavy Duty Aluminum Frame.
2 Ball Bearing for Extended Life and High Performance.
Impedance Protected to avoid overheat if fan is stuck.
Extreme Speed with Excellent Airflow.
Include 2 x Fan Guards, 1 x USA Non-Polarized 2 Prong AC Power Cord (4 ft), 1 x 2 pin wire-lead, and 1 x Screws Set (60mm screws x 4; Nuts x 4; Washers x 4)
Available in 80x38mm, 90x38mm and 120x38mm
Warning: This high speed fan is designed for high airflow performance; therefore, the noise level can be high for some applications.
Dimensions120.00 x 120.00 x 38.00 mm
Package ContentsIncludes: 2 Fan Guard, Screw set, and Open wire Lead, AC power Cord
Shipping weight0.66 kg
Package size213 × 135 × 58 mm

Questions about this item

How do I wire the BGears b-Blaster-AC 120x38 to a standard 100-125V outlet and what step is often missed?

Plug the included 4 ft USA non-polarized 2-prong AC power cord into the fan's open wire lead, then into the wall outlet; the step often missed is securing both supplied fan guards with the 60mm screws, nuts, and washers before powering on.

What maintenance will the 2 ball bearing in this 2800 RPM fan need over time?

The dual ball bearing is sealed and rated for extended life at 2800 +/- 10% RPM; no lubrication or service is required, but dust buildup on the blades and aluminum frame should be cleaned periodically to maintain the 123 CFM airflow.

At what point does the impedance protection activate during sustained high-load operation?

If the fan rotor stalls or airflow is completely blocked, the impedance protection cuts current to prevent overheating, allowing the motor to survive a stall condition without permanent damage.

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