7 1⁄2 Hp Blowers | McMaster-Carr

Filter by

Power

Voltage

Outlet Shape

Airflow @ Static Pressure

14,000 ft³/min @ 0 in. H₂O

36,200 ft³/min @ 0 in. H₂O

44,700 ft³/min @ 0 in. H₂O

12,000 ft³/min @ 1/2 in. H₂O

31,600 ft³/min @ 1/2 in. H₂O

34,150 ft³/min @ 1/2 in. H₂O

2,625 ft³/min @ 3 in. H₂O

4,600 ft³/min @ 3 in. H₂O

2,365 ft³/min @ 5 in. H₂O

4,245 ft³/min @ 5 in. H₂O

Electrical Phase

Inlet Diameter

Wheel Diameter

Power Source

Motor Speed

Outlet Diameter

Outlet Pipe Size

Overall Depth

Motor Enclosure Type

Maximum Temperature

Airflow

30,000 ft³/min to 39,999 ft³/min

40,000 ft³/min or greater

Frequency

60 Hz

Maximum Flow Rate @ Pressure

Inverter Rated

Housing Material

Wheel Material

Vacuum Rating

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

RoHS

DFARS Specialty Metals

Exempt

Forward

How can we improve?

21 Products

High-Output Blowers

Powerful and durable, these blowers are able to blow air through larger systems that have more airflow resistance than standard blowers can handle. They install in ductwork similar to duct fans, but are for use where high static pressures are present. Use them for equipment cooling, drying, ventilating, and exhausting. Blowers that weigh 280 lbs. or less can also be used for material conveying.

Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water. It is the responsibility of users in California to follow local energy efficiency regulations. Operating these blowers at a high airflow may violate these regulations.

With Round Outlet and Round Inlet—Totally Enclosed Motor Enclosure

Image of Product. Front orientation. Blowers. High-Output Blowers, Round Outlet.

Blowers with a totally enclosed motor enclosure can be used in dirty, dusty, and wet environments.

	Blowers																		Replacement Wheels
								Overall							Mounting
	Airflow @ SP	Volume (Sound) @ Distance	Motor Speed, rpm	Power, hp	Outlet Dia.	Inlet Dia.	Wheel Dia.	Ht.	Wd.	Dp.	Wt., lb.	Current	Temp. Range, ° F	Housing Material	Fasteners Included	Hole Dia.		Each		Each
230V AC/460V AC







				Three Phase—Hardwire

				2,365 ft³/min @ 5 in. H₂O 2,625 ft³/min @ 3 in. H₂O	75 dBA @ 15 ft.	3,450	7 1/2	7 15/16"	8"	15 1/2"	26 1/16"	23 11/16"	26 1/16"	280	18.0 amp/9.0 amp	-10 to 150	Steel	No	7/16"	1953K39	000000000	1953K103	0000000

With Rectangular Outlet and Round Inlet—Totally Enclosed Motor Enclosure

Image of Product. Front orientation. Blowers. High-Output Blowers, Rectangular Outlet.

Blowers with a totally enclosed motor enclosure can be used in dirty, dusty, and wet environments.

	Blowers																			Replacement Wheels
					Outlet				Overall							Mounting
	Airflow @ SP	Volume (Sound) @ Distance	Motor Speed, rpm	Power, hp	Ht.	Wd.	Inlet Dia.	Wheel Dia.	Ht.	Wd.	Dp.	Wt., lb.	Current	Temp. Range, ° F	Housing Material	Fasteners Included	Hole Dia.		Each		Each
230V AC/460V AC







				Three Phase—Hardwire

				4,245 ft³/min @ 5 in. H₂O 4,600 ft³/min @ 3 in. H₂O	65 dBA @ 15 ft.	3,450	7 1/2	10 3/8"	15 1/4"	14 5/8"	13 1/2"	28 3/16"	25 1/16"	28 1/4"	333	17.5 amp/8.8 amp	-15 to 180	Steel	No	9/16"	1953K47	000000000	1953K106	000000000

High-Flow Low-Pressure Compressed Air Blowers

Also known as regenerative blowers, use these to produce high-flow compressed air with low pressure or vacuum to operate pump drives, lift tables, and conveying systems. Compressed air blowers are also used for drying, exhausting, and aeration.

Air circulates inside the blower housing to compress air, which generates pressure or vacuum.

Single Stage

Single-stage blowers circulate air once and then exhaust.

Inverter Rated—Inverter-rated blowers have a motor that can run at slow speeds without overheating, so they can be used with a motor speed control (variable frequency drive).

	Blowers														Valves
							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet		Each		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				4 psi 110 in. H₂O	307 ft³/min @ 0 psi	8.9 in. Hg 121 in. H₂O	7 1/2	19.8 amp @ 208V AC 19.5 amp @ 230V AC 9.7 amp @ 460V AC	75	22"	18"	19"	5 to 100	3	3	4393K85	000000000	4393K41	0000000

Two Stage

Two-stage blowers circulate air twice and then exhaust, creating higher pressure or vacuum than single-stage blowers with the same horsepower.

Inverter Rated—Inverter-rated blowers have a motor that can run at slow speeds without overheating, so they can be used with a motor speed control (variable frequency drive).

	Blowers														Valves
							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet		Each		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				8 psi 220 in. H₂O	147 ft³/min @ 0 psi	13.3 in. Hg 180 in. H₂O	7 1/2	19.8 amp @ 208V AC 19.5 amp @ 230V AC 9.7 amp @ 460V AC	78	18"	18"	19"	5 to 100	2	2	4393K88	000000000	4393K41	0000000

High-Flow Low-Pressure Hazardous Location Compressed Air Blowers

Safely produce high-flow compressed air with low pressure or vacuum in environments with flammable gases and combustible dust, such as propane and carbon-based dust. These blowers have an explosion-proof motor and are UL listed for use in hazardous locations. Also known as regenerative blowers, they are commonly used to operate pump drives, lift tables, and conveying systems. They can also be used for drying, exhausting, and aerating.

Single Stage

Image of Product. Front orientation. Blowers. High-Flow Low-Pressure Hazardous Location Compressed Air Blowers.

							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet	Hazardous Location Rating		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				2 psi 68 in. H₂O	381 ft³/min @ 0 psi	5 in. Hg 67 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	80	23"	18"	19"	5 to 100	3	3	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K72	000000000


				4 psi 116 in. H₂O	294 ft³/min @ 0 psi	8.8 in. Hg 119 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	80	23"	16"	19"	5 to 100	3	3	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K71	00000000

Two Stage

							Overall				Pipe Size
	Max. Pressure	Max. Flow Rate @ Pressure	Vacuum Rating	Power, hp	Full Load Current @ Voltage	Volume (Sound), dBA	Lg.	Wd.	Ht.	Temp. Range, ° F	Inlet	Outlet	Hazardous Location Rating		Each
Three Phase, 208/230/460V AC (Inverter Rated)







				NPT Female Inlet and Outlet

				3 psi 110 in. H₂O	220 ft³/min @ 0 psi	8.1 in. Hg 110 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	78	27"	19"	22"	5 to 100	4	4	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K77	000000000


				5 psi 150 in. H₂O	167 ft³/min @ 0 psi	11 in. Hg 149 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	77	23"	18"	19"	5 to 100	2	2	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K76	00000000
				8 psi 240 in. H₂O	128 ft³/min @ 0 psi	11.9 in. Hg 161 in. H₂O	7 1/2	18.9 amp @ 208V AC 17.8 amp @ 230V AC 8.9 amp @ 460V AC	75	27"	16"	19"	5 to 100	2	2	NEC Class I Divisions 1, 2 Group D NEC Class II Division 2 Groups F, G	4393K75	00000000

Direct-Drive Exhaust Fans

With fewer moving parts than belt-drive fans, these direct-drive exhaust fans require less maintenance. They have a built-in grease pan to collect waste while cooking. Mount these fans directly to your roof with the attached mounting brackets. They meet UL standards for ventilation in residential, commercial, and institutional kitchens.

208V AC, Three Phase (Hardwire)—Open Dripproof (ODP) Motor Enclosure

Image of Product. Front orientation. Exhaust Fans. Direct-Drive Exhaust Fans.

Blade Dia.	Airflow @ SP	Volume (Sound) @ Distance	Drive Type	Motor Speed, rpm	No. of Speeds	Power, hp	Overall Ht.	Base Wd.	Max. Ambient Temp., ° F	Housing Material	Blade Material	Features	Specs. Met	Certification		Each
37"	12,000 ft³/min @ 1/2 in. H₂O 14,000 ft³/min @ 0 in. H₂O	72 dB @ 5 ft.	Direct	575	Variable	7 1/2	93 1/4"	59"	350	Steel	Steel	Grease Pan	UL 705, UL 762, ULC-S645	ETL Listed	4706N18	000000000

Hazardous Location Upblast Roof-Mount Exhaust Fans

With a UL-listed motor, these fans can be used in hazardous environments with combustible gases and dust to draw stagnant and humid air out through your roof, forcing it up and away from its surface.

Direct Drive

Image of Product. Front orientation. Exhaust Fans. Hazardous Location Upblast Roof-Mount Exhaust Fans.

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance.

	Exhaust Fans														Mounting Bases
						Overall
	Blade Dia.	Airflow @ SP	Volume (Sound) @ Distance	Motor Speed, rpm	Power, hp	Dia.	Ht.	Base Wd.	Wt., lb.	Max. Ambient Temp., ° F	Housing Material	Hazardous Location Rating		Each		Each
Totally Enclosed Motor Enclosure







				240/460V AC, Three Phase—Hardwire

				48"	31,600 ft³/min @ 1/2 in. H₂O 36,200 ft³/min @ 0 in. H₂O	89 dBA @ 5 ft.	1,150	7 1/2	57"	37"	60"	670	100	Steel	NEC Class I Divisions 1, 2 Groups C, D; NEC Class II Divisions 1, 2 Groups E, F, G	4746N15	000000000	2230K26	0000000

Dust-Resistant Direct-Drive Wall-Mount Exhaust Fans

Style 5

Better suited for dirty, dusty, and damp environments than standard direct-drive fans, these have a totally enclosed motor enclosure. Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Use these fans to draw stagnant and humid air out of a room or area.

230/460V AC, Three Phase (Hardwire)—Totally Enclosed Motor Enclosure

Style 5

Exhaust Fan Collars—Collars and louvers are sold separately. Use a collar to connect a wall-mount exhaust fan to a louver.

Exhaust Fans																	Exhaust Fan Collars
								Overall
Style	Blade Dia.	Airflow, ft³/min	Volume (Sound) @ Distance	Drive Type	Motor Speed, rpm	No. of Speeds	Power, hp	Ht.	Wd.	Dp.	Wt., lb.	Ambient Temp., ° F	Frame Material	Blade Material		Each		Each
5	48"	37,100	82 dB @ 5 ft.	Direct	1,150	1	7 1/2	54"	54"	22 1/2"	470	104	Steel	Steel	2222K19	000000000	5353K18	0000000

Direct-Drive Upblast Roof-Mount Exhaust Fans

Style 2

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. These exhaust fans draw stagnant and humid air out through your roof and then expel it up and away from the roof surface. All fans have a disconnect switch to turn off the power for servicing.

Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.

	Exhaust Fans														Mounting Bases
							Overall
	Style	Blade Dia.	Airflow @ SP	Volume (Sound) @ Distance	Motor Speed, rpm	Power, hp	Dia.	Ht.	Base Wd.	Wt., lb.	Ambient Temp., ° F	Housing Material		Each		Each
Totally Enclosed Motor Enclosure







				460V AC, Three Phase—Hardwire

				2	54"	34,150 ft³/min @ 1/2 in. H₂O 44,700 ft³/min @ 0 in. H₂O	88 dBA @ 5 ft.	1,125	7 1/2	62"	63 1/2"	64 1/4"	628	120	Steel	2081K28	000000000	2230K145	0000000

Dust-Resistant Belt-Drive Wall-Mount Exhaust Fans

Better suited for dirty, dusty, and damp environments than standard direct-drive fans, these have a totally enclosed motor enclosure. Belt-drive fans are quieter and have a longer life span than direct-drive fans because components can be replaced if worn or damaged. Use these fans to draw stagnant and humid air out of a room or area.

230/460V AC, Three Phase (Hardwire)—Totally Enclosed Motor Enclosure


	Exhaust Fan Collars

Exhaust Fan Collars—Collars and louvers are sold separately. Use a collar to connect a wall-mount exhaust fan to a louver.

Exhaust Fans														Exhaust Fan Collars
							Overall
Blade Dia.	Airflow, ft³/min	Volume (Sound) @ Distance	Drive Type	Motor Speed, rpm	No. of Speeds	Power, hp	Ht.	Wd.	Dp.	Frame Material	Blade Material		Each		Each
60"	50,000	79 dB @ 5 ft.	Belt	500	1	7 1/2	66"	66"	23 1/2"	Steel	Steel	1922K97	000000000	5353K21	0000000