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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 size120 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth38 mm
  • Bearing design2 Ball
  • Rotational speed2800 +/- 10% RPM
  • 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.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $24.99
Pricier than about 63% of the 8,339 comparable items (median $19.99).
Fan size 120 mm
Typical for this category: the median of 1,114 items is 120 mm.

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Specifications

Product
Brand nameBgears
Product lineb-blaster AC 100 V-125 V Series
Model nameb-Blaster-AC 120 × 38
Product typeCase Fan
Product colorBlack
Performance
Rotational speed2800 +/- 10% RPM
Airflow rate123 CFM
Size & build
Fan size120 mm
Number of fans1 Fan
Fan depth38 mm
Bearing design2 Ball
Product dimensions120 × 120 × 38 mm
Shipping weight0.66 kg
Package size213 × 135 × 58 mm
Compatibility
Compatible withCase
In the box
In the boxIncludes: 2 Fan Guard, Screw set, and Open wire Lead, AC power Cord
Environment & compliance
Operating noise44.8 dBA
More details
Fan controlNo Controller

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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