DC Brushless Fan with Two Lines 5V 12V 24V Industrial Cooling Fans Sleeve Bearing 25/30/35/40/50*10mm

dc brushless cooling fan, 2510 fan, 3010 fan, 3510 fan, 4010 fan, 5010 fan, sleeve bearing fan, 5v mini fan, 12v cooling fan, 24v industrial fan Brand Name: NONE Fan Covering Material: Plastic Fan Rib Material: Plastic High-concerned chemical: Urethane (Ethyl carbamate) Is Foldable: No Number of Fan Ribs: 14 Origin: Mainland China Technics: Free Form is_customized: Yes PARAMETER Attribute Value Product Name 2-Wire DC Sleeve Bearing Brushless Cooling Fan Sizes 2510, 3010, 3510, 4010, 5010 (10mm thickness) Rated Voltage DC 5V, DC 12V, DC 24V Bearing Type Sleeve bearing Wire 2-wire (power only, no speed signal) Feature Slim frame, low cost, compact size, continuous running Application PCB, power adapter, 3D printer, small cabinet, industrial control equipment cooling FAQ Q1:What does 2510 / 3010 mean? A1: First two numbers = fan width (mm), last two = thickness (mm). Example: 4010 = 40×40×10 mm. Q2: Sleeve bearing vs ball bearing? A2: Sleeve bearing is cheaper; quieter at low speed but shorter lifespan than ball bearing. Q3: No tachometer wire? A3: Yes, this is 2-wire version, only power supply, cannot read RPM.