50 mm Fans | McMaster-Carr

Running on 48V DC power or lower, these compact fans fit inside electronics and other small, heat-sensitive equipment to keep things cool. They're also known as muffin fans. Some meet American and Canadian safety standards.

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Ball Bearing—Fans with ball bearings generate less heat as they run, so they have a longer life than fans with plain bearings.

Plain Bearing—Fans with plain bearings are good for less demanding applications, such as cooling prototypes or parts that aren’t used often.

					Overall						Mounting
	Airflow	Temp. Range, ° F	Volume	Current	Ht.	Wd.	Dp.	Frame Material	Blade Material	Bearing Type	Fasteners Included	Hole Dia.	Certification		Each
5V DC—Wire Leads



		13 ft³/min	15 to 155	31 dBA	0.18 amp	1.97" (50 mm)	1.97" (50 mm)	0.39" (10 mm)	Plastic	Plastic	Plain	No	0.17" (4.3 mm)	C-UL Recognized Component, UL Recognized Component	0000000	00000


		12V DC—Wire Leads



				11 ft³/min	0 to 155	30 dBA	0.08 amp	1.97" (50 mm)	1.97" (50 mm)	0.59" (15 mm)	Plastic	Plastic	Ball	No	0.15" (3.8 mm)	CSA Certified, UL Recognized Component	0000000	00000


				24V DC—Wire Leads



						11 ft³/min	0 to 155	30 dBA	0.04 amp	1.97" (50 mm)	1.97" (50 mm)	0.59" (15 mm)	Plastic	Plastic	Ball	No	0.15" (3.8 mm)	CSA Certified, UL Recognized Component	0000000	00000