Back To Categories

Mega Direct Drive

Product Description:
J&D's NEW 72" Mega Direct Drive fiberglass exhaust fan boasts some of the best performance on the market today for a fan of this size! 55,505 CFM at 0.10" static pressure plus no belts, no pulleys, no tensioners. An amazing fan available only at J&D. The fan is variable speed ready with the driver mounted inside the fan. The 5-blade poly prop is optimally pitched for superior performance, and comes with a 3 year warranty! The motor is a permanent magnet direct drive, IP66-rated motor that comes with a 2 year warranty. Contact J&D today and let us help you design the perfect dairy ventilation system for your herd.

INTERESTED IN THIS PRODUCT?

Fill out the form and we will be in touch within a business day!

  • Have a question about this product?
  • Complete the form below and we'll be in touch with you soon.

READY TO PURCHASE?

Find a Dealer

Key Features:

  • Save Time & Money
    • No Belts to Change
    • No Pulleys to Maintain
    • No Lubricating Bearings
    • No Greasing Motor
  • Maintains a continuous high level of performance with no power loss or reduction from aging belts and pulleys
  • FANtastic performance combined with great efficiency
  • Soft starts fan to reduce loads on fan during start up and helps to extend fan life
  • UV-resistant fiberglass housing and cone with smooth molded exterior
  • Smooth exterior for easy cleaning

Applications:

  • Dairy
  • Greenhouse
  • Industrial
  • Poultry
Part # Motor Wiring Instructions Size Output (CFM) HP Volts Amps NP Hz Ph Spd RPM Drive Prop Test # Cord Speed Control Compatible VFD Compatible Fixed or Portable Oscillating CFM@ .0" SP CFM/ Watt @ .0 SP CFM@ .05" SP CFM/ Watt @ .05" SP CFM@ .10" SP CFM/ Watt @ .10" SP CFM@ .15" SP CFM/ Watt @ .15" SP CFM@ .20" SP CFM/ Watt @ .20" SP Air Flow Ratio FEI @ 0.10" SP Rough-In Dimensions Shutter Cone Net Wt Housing Material Housing Color Guard material and coating Guard Color Guard Spacing Blade Material Blade Color Component Certifications
Part - Motor Wiring Instructions Size Output (CFM) HP Volts Amps NP Hz Ph Spd RPM Drive Prop Test # Cord Speed Control Compatible VFD Compatible Fixed or Portable Oscillating CFM@ .0" SP CFM/ Watt @ .0 SP CFM@ .05" SP CFM/ Watt @ .05" SP CFM@ .10" SP CFM/ Watt @ .10" SP CFM@ .15" SP CFM/ Watt @ .15" SP CFM@ .20" SP CFM/ Watt @ .20" SP Air Flow Ratio FEI @ 0.10" SP Rough-In Dimensions Shutter Cone Net Wt Housing Material Housing Color Guard material and coating Guard Color Guard Spacing Blade Material Blade Color Component Certifications
Three Phase Wired for 480V with cone
VMDA72P5C43C --- 72" 4 kW 460 6.15 60 3 1/Var^ 450 PM-DD 5-Ply 20221012-01 Y Included Fixed 59,594 18.2 57,603 16.7 55,505 15.3 53,460 14.1 51,268 13.1 0.89 1.75 77” W x 77”H Aluminum one-piece Fiberglass White Hot dip galvanized Silver Poly Black
Part #
VMDA72P5C43C
Three Phase Wired for 480V with cone
Details
Motor Wiring Instructions
---
Size
72"
Output (CFM)
HP
4 kW
Volts
460
Amps NP
6.15
Hz
60
Ph
3
Spd
1/Var^
RPM
450
Drive
PM-DD
Prop
5-Ply
Test #
20221012-01
Cord
Speed Control Compatible
Y
VFD Compatible
Included
Fixed or Portable
Fixed
Oscillating
CFM@ .0" SP
59,594
CFM/ Watt @ .0 SP
18.2
CFM@ .05" SP
57,603
CFM/ Watt @ .05" SP
16.7
CFM@ .10" SP
55,505
CFM/ Watt @ .10" SP
15.3
CFM@ .15" SP
53,460
CFM/ Watt @ .15" SP
14.1
CFM@ .20" SP
51,268
CFM/ Watt @ .20" SP
13.1
Air Flow Ratio
0.89
FEI @ 0.10" SP
1.75
Rough-In Dimensions
77” W x 77”H
Shutter
Aluminum
Cone
one-piece
Net Wt
Housing Material
Fiberglass
Housing Color
White
Guard material and coating
Hot dip galvanized
Guard Color
Silver
Guard Spacing
Blade Material
Poly
Blade Color
Black
Component Certifications

Product Details:

Part #

Motor Wiring Instructions

Size

HP

Volts

Amps NP

Hz

Phase

Speed

RPM

Drive

Prop

Test #

Speed Control Compatibility

VFD Compatible

Fixed or Portable

CFM@ .0" SP

CFM/ Watt @ .0 SP

CFM@ .05" SP

CFM/ Watt @ .05" SP

CFM@ .10" SP

CFM/ Watt @ .10" SP

CFM@ .15" SP

CFM/ Watt @ .15" SP

CFM@ .20" SP

CFM/ Watt @ .20" SP

Air Flow Ratio

FEI @ 0.10" SP

Rough-In Dimensions

Shutter

Cone

Housing Material

Housing Color

Guard material & coating

Guard Color

Blade Material

Blade Color

Three Phase Wired for 480V with cone

VMDA72P5C43C

---

72"

4 kW

460

6.15

60

3

1/Var^

450

PM-DD

5-Ply

20221012-01

Y

Included

Fixed

59,594

18.2

57,603

16.7

55,505

15.3

53,460

14.1

51,268

13.1

0.89

1.75

77” W x 77”H

Aluminum

one-piece

Fiberglass

White

Hot dip galvanized

Silver

Poly

Black

Product Details:

Part #

Motor Wiring Instructions

Size

HP

Volts

Amps NP

Hz

Phase

Speed

RPM

Drive

Prop

Test #

Speed Control Compatibility

VFD Compatible

Fixed or Portable

CFM@ .0" SP

CFM/ Watt @ .0 SP

CFM@ .05" SP

CFM/ Watt @ .05" SP

CFM@ .10" SP

CFM/ Watt @ .10" SP

CFM@ .15" SP

CFM/ Watt @ .15" SP

CFM@ .20" SP

CFM/ Watt @ .20" SP

Air Flow Ratio

FEI @ 0.10" SP

Rough-In Dimensions

Shutter

Cone

Housing Material

Housing Color

Guard material & coating

Guard Color

Blade Material

Blade Color

Three Phase Wired for 480V with cone

VMDA72P5C43C

---

72"

4 kW

460

6.15

60

3

1/Var^

450

PM-DD

5-Ply

20221012-01

Y

Included

Fixed

59,594

18.2

57,603

16.7

55,505

15.3

53,460

14.1

51,268

13.1

0.89

1.75

77” W x 77”H

Aluminum

one-piece

Fiberglass

White

Hot dip galvanized

Silver

Poly

Black

Accessories:

Part # Details
Shutter Motor Kit
VRS75 Shutter Motor Kit, for 75" Shutters, w/Hardware
VRS75-C Shutter Motor Kit, for 75" Shutters, w/Hardware and 10' Cord

FAQs:

J&D tested multiple motors to be considered for the Mega Direct Drive Fan, and we chose the one that was the toughest, and it just happened to be a permanent magnet motor. It has very good performance and efficiency, especially in this application. This motor was vigorously tested in this fan to the point we were trying to make it fail. No matter what we did, we couldn't get the motor windings hot. Winding temperature is the biggest factor in predicting motor lifespan. No matter what we did, we couldn't get the windings to heat up even close to what was allowed.
Switch reluctance motors are good motors, however, we find them to be too loud for our application. The reason they are loud is switch reluctance motors rotate in consecutive 'steps'. The steps are fast so the shaft rotates, but this makes them louder. You can make switch reluctance motors quieter with algorithm changes that smooths the steps, but making that change also cuts the performance and efficiency, and they're still louder than a permanent magnet or induction motor.