Selecting a Plastic Standard Fan
WindMaster® Fan Types
WindMaster Plastic LS7 Fans
7-Blade Plastic Standard Fans
•
Clockwise rotation
•
Smaller 7-blade fan design
•
Quieter with higher operating efficiency
•
Honeycomb hub structure for maximum
durability without extra weight
•
For construction excavators and loaders
Specifications
Diameters:
Standard Pilots:
Pitch Width:
22”-28” [559-711.2 mm]
>1"-2.57” [25-65 mm]
4.43" [113 mm]
WindMaster Plastic MS8 and HS8 Fans
8-Blade Plastic Standard Fans
•
8-blade fans designed to cool lower power
engines in heavy and medium-duty trucks
and buses that require a less aggressive
fan
•
Lighter-weight hubless design
•
For class 5 to 8 trucks and buses
•
Clockwise rotation
Specifications
Diameters:
Standard Pilots:
Pitch Width:
Weight:
22"-32" [559-813 mm]
>1"-7" [25-178 mm]
3.39"-3.65" [86-92 mm]
32" diameter fan = 9.5 lbs. [4.3
kg]
WindMaster Spider HS8 Fans
8-Blade Spider Standard Fans
•
Counterclockwise Rotation
•
Double steel spider wit aluminum
blades
•
For heavy-duty applications
•
Off-the-shelf ordering available. For
custom-made metal and composite
fans, select the “Composite & Metal
Fans” link on the catalog home page.
Specifications
Diameters:
Standard Pilots:
Pitch Width:
Weight:
25.5"-28" [647.7 - 711.2mm]
5" [127 mm]
2.94", 3.0” and 3.94" [74.7, 76.2 &
100.1 mm]
14.2- 24.4 lbs. [31.31 – 53.79 kg]
WindMaster Plastic MS9 Fans
9-Blade Plastic Standard Fans
•
Available in both clockwise and
counterclockwise rotation.
•
9-blade standard fans with a unique blade
shape for increased airflow and efficiency
•
Maximum cooling performance and quieter
operation
•
Clockwise or counter clockwise options
available
•
Hubless honeycomb mounting pilot for
improved stacking
•
For new reduced-emission engines on
medium- to heavy-duty trucks, buses and
off-highway equipment
Specifications
Diameters:
Standard Pilots:
Pitch Width:
Weight:
22"-30" [560-762 mm]
2"-5" [51-127 mm]
3.5" [91 mm]
28" diameter fan = 8.2 lbs. [3.7 kg]
WindMaster Plastic HS9 Fans
9-Blade Plastic Standard Fans
•
9-blade standard fans designed to pull
more air and draw less horsepower for
greater efficiency
•
Maximum cooling performance with less
load on the engine and better fuel economy
•
Unique airfoil helps maintain blade shape
at high RPM’s
•
Honeycomb hub structure for maximum
durability without extra weight
•
For class 5 to 8 trucks, buses and a variety
of off-highway vehicles and equipment
Specifications
Diameters:
Blade Configurations:
Standard Pilots:
Pitch Width:
24"-32" [610-813 mm]
9-blade
2"-5" [51-127 mm]
3.15" and 3.59" [80 and 92 mm]
WindMaster Plastic LS12 Fans
12-Blade Plastic Standard Fans
•
Clockwise Rotation
•
Lower profile 12-blade fan design
•
Good performance at lower static
pressures and smaller diameters
•
Designed for industrial sweepers, road
paving equipment and small engines
•
Honeycomb hub structure for maximum
durability without extra weight
•
Unique manufacturing process cuts custom
pilot or bolt circles
Specifications
Diameters:
Standard Pilots:
Pitch Width:
16”-24” [406-610 mm]
>1"-5” [25-127 mm]
2.45" [62 mm]
WindMaster Fans are designed to exceed OEM specifications; actual results may vary.
Selecting a Fan Blade
OPERATING SPEED
PILOT AND BOLT CIRCLE HOLE DIAMETERS
Calculate Operating Speed by multiplying maximum
engine RPM by drive ratio.
DRIVE RATIO
Calculated Drive Ratio by dividing the accessory drive
or crankshaft pulley diameter by the fan drive pulley
diameter.
Example:
SUCKER OR PUSHER?
Accessory Drive
Fan Drive
Crank Shaft Pulley
Pulley
MAXIMUM ENGINE RPM = 2100
DRIVE RATIO
8” ÷ 7” = 1.14:1
CLEARANCE INFORMATION
OPERATING SPEED
2100 X 1.14 = 2,394 rpm’s
DIAMETER AND
PROJECTED WIDTH
Ideally the fan should be centered in the shroud with
half the fan blade inside the shroud and the other half
outside.
CAUTION
Fan must have 1” clearance in front of and behind the
blades to ensure proper clearance when installed and
rotating at high speed.
Rotation
FAN PART NUMBERING SYSTEM
XX
X
XXX
XX
X
OEM/AFTERMKT
FAN TYPE
FAN DIAMETER
PILOT DIAMETER
DISK OFFSET
98-OEM
1 - 9 BLADE HS9 3.5" PW
813 = 32"
10 = 1" DIA W/7.97" BC
1 = FRONT
99-AFTERMARKET
2 - 9 BLADE HS9 3.0" PW
800 = 31.5"
12 = 1" DIA W/2.36" BC
2 = CENTER
3 - 8 BLADE 3.65" PW
787 = 31"
20 = 2" DIA W/3.5" BC
3 = BACK
4 - 12 BLADE LS12 2.45" PW
762 = 30"
25 = 2.56" DIA W/3.5" BC
5 - 9 BLADE MS9 3.59" PW
750 = 29.5"
50 = 5" DIA W/ 6" BC
6 - 11 BLADE HS11 3.59" PW
711 = 28"
70 = 7" DIA W/8.44" BC
7 - 7 BLADE LS7 VARIABLE PW
700 = 27.5"
71 = 7.09" DIA W/7.874" BC
8 - 9 BLADE CCW MS9 3.59" PW
686 = 27"
15 = 1.5" W/2.88" BC
680 = 26.75"
16 = 1.6" W/2.5" BC
660 = 26"
27 = 2.75" W/3.75" BC
654 = 25.75"
49 = 4.96 W/5.78" BC
635 = 25"
610 = 24"
584 = 23"
559 = 22"
508 = 20"