Backward Inclined Centrifugal Blower, Belt Drive, High Volume

PowerFoil Blower AF

Built for dependability and bare-minimum maintenance in a V-belt driven, non-overloading blower package. Ultra-high efficiency airfoil design with a broad performance range and extremely low noise levels. For high volume ventilation applications.

Highly Efficient Airfoil Blades
High Volume Capacity
14 Models, 3,352 to 134,190 CFM, Max 14" SP
Arrangements 1, 3, 8, 9 and 10 SWSI, and Arrangement 3 DWDI
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PowerFoil Blower AF

Capability

Common Applications

Industrial and Facility Ventilation: Hospitals, Schools, Manufacturing Factories, Office Buildings.

Airflow

Clean Air from 3,352 CFM to 134,190 CFM. AMCA Class 1 up to 5.5" SP. AMCA Class 2 up to 9" SP. AMCA Class 3 up to 14" SP. AMCA Class 4 up to 14" SP.

Size Format

AMCA Arrangement 1, 3, 8, 9 and 10 in SWSI: Single Width Single Inlet. AMCA Arrangement 3 in DWDI: Double Width Double Inlet.

Wheel

Steel Backward Inclined Non-Overloading Wheel. Diameters 27" to 49". Steel Airfoil Wheels up to 74,520 CFM and 14" SP in SWSI models, and up to 134,190 CFM and 14" SP in DWDI models.

Drive

Fixed or Adjustable Pitch V-Belt Sheave Drive. Premium Efficiency, 120 to 480VAC Single or Three Phase, NEMA Enclosure and Frame Size Motors.

Temperatures

Steel Wheel: 300°F max at full airflow capacity, 600°F max at 85% derated capacity. Aluminum Wheel option: 150°F max at full airflow capacity, 250°F max at 80% derated capacity.

Inlet

Circular Inlet Ring Diameter 29" to 52.25".

Outlet

Rectangular Outlet 29" H x 21.25" W to 52.625" H x 69.125" W.

Construction

Steel Sheet, Gray Powder-Coated Finish. AMCA Class 1, 2, 3, and 4. Indoor / Outdoor, Heavy-Duty.

Spark Resistance

Optional AMCA Spark A, B, or C Resistant Construction.

Approvals

ISO-9001 Certified Shop. AMCA Accredited In-House Test Laboratory.

PowerFoil Blower AF

Available Models

Model

AF-270SW

AF-300SW

AF-330SW

AF-365SW

AF-402SW

AF-445SW

AF-490SW

AF-270DW

AF-300DW

AF-330DW

AF-365DW

AF-402DW

AF-445DW

AF-490DW

Wheel Diameter

27

30

33

36 1⁄2

40 1⁄4

44 1⁄2

49

27

30

33

36 1⁄2

40 1⁄4

44 1⁄2

49

Max CFM

22626

27918

33804

41364

50274

61506

74520

40716

50274

60858

74455

90536

110668

134190

Max SP

14

14

14

14

14

14

14

14

14

14

14

14

14

14

Max BHP

69.47

85.76

103.77

111.23

141.99

173.56

210.44

127.27

157.12

190.11

228.52

277.88

340

410

Inlet Area Sq.Ft.

4.43

5.469

6.618

8.11

9.85

12.05

14.61

8.86

10.939

13.236

16.22

19.7

24.1

29.22

Outlet Area Sq.Ft.

4.19

5.17

6.26

7.66

9.31

11.39

13.8

7.54

9.31

11.27

13.788

16.766

20.494

24.85

Max RPM

Class I

Class II

Class III

1453

1893

2389

1308

1703

2150

1189

1548

1955

1098

1431

1802

996

1297

1634

901

1173

1480

818

1066

1342

1453

1895

2388

1308

1705

2149

1189

1550

1954

1094

1427

1799

993

1294

1631

898

1171

1475

815

1063

1340

Shaft Diameter ARR 1

Class I

Class II

Class III

1 7⁄16

1 11⁄16

1 15⁄16

1 11⁄16

1 15⁄16

2 7⁄16

1 11⁄16

1 15⁄16

2 7⁄16

1 15⁄16

2 3⁄16

2 15⁄16

2 3⁄16

2 7⁄16

2 15⁄16

2 3⁄16

2 11⁄16

3 7⁄16

2 11⁄16

2 15⁄16

2 15⁄16

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Shaft Diameter ARR 3

Class I

Class II

Class III

1 7⁄16

1 7⁄16

1 15⁄16

1 11⁄16

1 11⁄16

2 3⁄16

1 11⁄16

1 11⁄16

2 7⁄16

1 15⁄16

1 15⁄15

2 7⁄16

1 15⁄16

2 3⁄16

2 7⁄16

1 15⁄16

2 7⁄16

2 11⁄16

2 3⁄16

2 7⁄16

2 15⁄16

1 15⁄16

2 3⁄16

2 7⁄16

1 15⁄16

2 7⁄16

2 7⁄16

2 3⁄16

2 7⁄16

2 7⁄16

2 3⁄16

2 7⁄16

2 15⁄16

2 3⁄16

2 7⁄16

3 7⁄16

2 7⁄16

2 7⁄16

3 15⁄16

2 11⁄16

2 15⁄16

3 15⁄16

Fan Selection Tool

Our online fan selection tool will help you identify a suitable model for your application's requirements.

PowerFoil Blower AF

Construction

Precision continuous welding, computerized bearing selections, and advanced manufacturing techniques assure that your high-volume ventilation needs will be more than covered with Peerless' PowerFoil AF series.

Wheel

Our high-efficiency "Peerless" wheel design features hollow, heavy-gauge airfoil section blades, aerodynamically engineered and fully welded to a spun wheel cone, balanced against a CNC laser-cut backplate and cast-iron hub.

One-Piece High Strength Steel Airfoils.
Extremely Low Noise Levels.
Dynamic Factory Balanced.
Optimum Trouble-Free Performance.

Inlet

For low-turbulence inlet airflow and balanced rotation, our inlet cones are stamped or rolled from single sheets, free of seams and welds.

Rigid Streamlined Inlet.
​Single-Piece Construction.

Frame

Indoor/outdoor, open-member steel frames keep motors, drivetrains, and wheels in alignment longer than formed sheet frames, resulting in longer maintenance intervals.

Fully-Welded Steel Frame.
Easy Maintenance Access.
Fewer Alignment Adjustments Needed.

Housing

All fan housings can be factory set at any of eight 45° intervals, allowing for a wide range of installation and ducting configurations. Housings are welded and not field adjustable.

45° Fixed Discharge Intervals.
Factory Welded Outlet Position.
Fewer Bolted Connections to Maintain.

Drive System

The Airfoil Blower series features a V-Belt drive with cast iron adjustable or fixed pitch sheaves, heavy-duty motor base rails, ground and polished keyed shafts, and self-aligning normal duty bearings.

Adjustable Motor Base for Belt Tensioning.
Factory-Set RPM Available.
Single Speed, TEFC, Inverter Duty Motor.
100K Run Hour Bearings.

PowerFoil Blower AF

Arrangements

Peerless' PowerFoil AF series is available in Arrangement 1, 3, 8, 9 and 10 SWSI, and Arrangement 3 DWDI.

Arrangement 1 SWSI

AMCA Arrangement 1 SWSI features dual bearings mounted on a base frame, with an overhung fan impeller for use with belt or direct drives. For belt drive configurations, motor positions W, X, Y, and Z are available. Motor supports can be provided in the field or at the factory.

V-Belt Drive with Overhung Impeller.
SWSI Type: Single Width Single Inlet.
Normal Duty, 100K Run Hour Bearings.
Remote Mounted Motor.

Arrangement 3 SWSI

AMCA Arrangement 3 SWSI utilizes one bearing on either side of the fan impeller (two bearings total), for use with belt or direct drives. For belt drive configurations, motor positions W, X, Y, and Z are available. Motor supports can be provided in the field or at the factory.

V-Belt Drive with Fully Supported Impeller.
SWSI Type: Single Width Single Inlet.
Normal Duty, 100K Run Hour Bearings.
Remote Mounted Motor.

Arrangement 8 SWSI

AMCA Arrangement 8 SWSI is comparable to Arrangement 1, however adds a separate motor pedestal at the end of the impeller shaft, allowing for a direct drive installation coupled with dual external bearings.

Direct Drive with Overhung Impeller.
SWSI Type: Single Width Single Inlet.
Ball/Roller Bearings.
Onboard, Pedestal-Mount Motor.

Arrangement 9 SWSI

AMCA Arrangement 9 SWSI utilizes dual bearings mounted on a base frame, with an overhung fan impeller for use with belt drives. The motor is mounted outside of the frame or pedestal.

V-Belt Drive with Overhung Impeller.
​​SWSI Type: Single Width Single Inlet.
Ball/Roller Bearings.
Onboard Motor.

Arrangement 10 SWSI

AMCA Arrangement 10 SWSI features a space-efficient, packaged design with an onboard motor mounted within the fan's bearing pedestal.

V-Belt Drive with Overhung Impeller.
SWSI Type: Single Width Single Inlet.
Ball/Roller Bearings.
Onboard Motor.

Arrangement 3 DWDI

AMCA Arrangement 3 DWDI uses a dual-width impeller setup with one bearing on either side of the fan impeller pair (two bearings total), for use with belt or direct drives. For belt drive configurations, motor positions W, X, Y, and Z are available. Motor supports can be provided in the field or at the factory.

V-Belt Drive with Fully Supported Impeller.
SWSI Type: Single Width Single Inlet.
Normal Duty, 100K Run Hour Bearings.
Remote Mounted Motor.

PowerFoil Blower AF

Options

Peerless' PowerFoil AF series can be customized with a variety of options to maximize performance, safety, and reliability across a wide range of applications.

Weather Cover

The solid sheet metal Weather Cover installs over the belt drive and motor frame, offering weather protection without the need of a separately constructed penthouse or canopy.

Eliminates Separate Canopy Cover.
Solid Metal Protection.
Removable for Maintenance.

Belt Guard

Our heavy-duty Belt Guard is fabricated from expanded metal and installed over the V-belt drive end of the fan, providing personnel protection from the drive's moving parts.

Added Personnel Protection.
Covers All Rotating Parts.

Automatic Outlet Damper

Protecting the fan from backdrafts, rain, and snow, our corrosion-resistant Outlet Damper securely attaches to the fan outlet. Choose from automatic, motorized, or manual operation. Outlet dampers are not available with mesh screens.

Protects Against Backdrafts.
Holds Weather Out.
Corrosion Resistant.

Access Doors

For easy inspection and cleaning, bolted Access Doors can be provided around the perimeter of the fan housing. Our gasketed doors can be provided with bolted or quick-release clamp hardware.

Quick Inspection Access.
Gasketed Doors.
Quick Release Clamps.

Vibration Rails

For sound and vibration sensitive applications, Peerless can provide spring or rubber-in-shear Vibration Isolation Rails and Isolation Pads.

Reduces Acoustical Impact.
​Isolates Vibration.

Spark Resistance

For applications where hazardous gases or other ignitable conditions exist, Peerless offers fully Spark-Resistant Construction and explosion-proof motors per AMCA Spark A, B, and C hazard classifications.

Hazardous Condition Protection.
AMCA Spark A, B, C.
Explosion Proof Motors.

Motors

Peerless can provide nearly any special motor specification, including multi-speed windings, stainless steel casings, washdown and other environmental ratings, inverter duty, explosion proof, IEC and other frame sizes, and more.

Any Compatible Motor Can Be Provided.
Domestic or International Frames.
Special Environment Ratings.

Other Accessories

Additional Peerless Airfoil Blower series accessories include inlet vanes, drain fittings, inlet and outlet screens, flanged inlet and outlet connections, heat slingers, and multiple paint and coating finish options.

Paint and Coating Options.
​​Flanged Connections.
and more!

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