127 mm Fans | McMaster-Carr

Measured in decibels (dB), volume ratings indicate how much noise equipment makes. Some common volume levels include a whisper @ 20 dB, a refrigerator @ 40 dB, a conversation @ 60 dB, and a light machine shop @ 90 dB. OSHA recommends hearing protection for exposure to 80 dB and greater.

DC Equipment-Cooling Fans

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.

Fans with ball bearings generate less heat as they run, so they have a longer life than fans with sleeve bearings.

Square

Overall
Ht.	Wd.	Dp.	Airflow, cfm	Bearing Type	Temp. Range, °F	Volume, dBA	Current, A	Frame Material	Blade Material	Mounting Fasteners Included	Mounting Hole DIa.	Specifications Met		Each
12V DC—Wire Leads
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	125	Ball	0° to 155°	46	0.50	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified	00000000	000000
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	145	Ball	0° to 155°	51	0.82	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified	0000000	00000
24V DC—Wire Leads
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	125	Ball	0° to 165°	46	0.25	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified	00000000	00000
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	145	Ball	0° to 155°	51	0.40	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified	0000000	00000
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	200	Ball	0° to 145°	58	0.73	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified, C-UL Recognized Component	00000000	00000
48V DC—Wire Leads
5" (127 mm)	5" (127 mm)	1.5" (38 mm)	200	Ball	0° to 145°	58	0.38	Plastic	Plastic	No	0.17" (4.3 mm)	UL Recognized Component, CSA Certified, C-UL Recognized Component	00000000	00000

Wet-Location Equipment-Cooling Fans

Able to withstand dust and water splashes, these fans are IP rated. Also known as muffin fans, they keep heat-sensitive equipment such as electronic components cool. All have ball bearings to lower the heat that is generated from the fans for a longer service life. They also have UL recognized components.

IP55-rated fans can also stand up to washdowns from low-pressure jets of water.

Install fans with wire leads directly to your power source—there’s no need for additional connectors.

Use fans with quick-disconnect terminals to quickly connect and disconnect wiring from the terminal. Optional quick-disconnect power cords allow you to add a NEMA plug to these fans, so you can connect them to a standard outlet.

Square

Overall
Ht.	Wd.	Dp.	Airflow, cfm	Temp. Range, °F	Volume, dBA	Current, A	Frame Material	Blade Material	Bearing Type	Mounting Fasteners Included	Mounting Hole Dia.	Environmental Rating		Each
100-120V AC, Single Phase, 50Hz/60Hz—Wire Leads
5" (127 mm)	5" (127 mm)	1.52" (38.5 mm)	110 128	-20° to 175°	48	0.25 0.22	Aluminum	Steel	Ball	No	0.177" (4.5 mm)	IP55	0000000	000000
100-120V AC, Single Phase, 50Hz/60Hz—Quick-Disconnect Terminals
5" (127 mm)	5" (127 mm)	1.52" (38.5 mm)	110 128	-20° to 175°	48	0.25 0.22	Aluminum	Steel	Ball	No	0.177" (4.5 mm)	IP55	0000000	00000
200-240V AC, Single Phase, 50Hz/60Hz—Wire Leads
5" (127 mm)	5" (127 mm)	1.52" (38.5 mm)	110 128	-20° to 175°	48	0.12 0.11	Aluminum	Steel	Ball	No	0.177" (4.5 mm)	IP55	0000000	00000
200-240V AC, Single Phase, 50Hz/60Hz—Quick-Disconnect Terminals
5" (127 mm)	5" (127 mm)	1.52" (38.5 mm)	110 128	-20° to 175°	48	0.12 0.11	Aluminum	Steel	Ball	No	0.177" (4.5 mm)	IP55	0000000	00000