The Flex Wing Mower, available in 15' and 20' models, is designed to cover more ground in less time. Two flex wings respond to the contour of the ground while mowing hills, ditches and swales. Built for long life under extreme conditions.

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  • 15' mowing width / 20' mowing width
  • 3 rotor design for optimal cutting
  • 540 and 1,000 RPM models / 1,000 only
  • Narrow transport width
  • 10 gauge deck thickness / 7 gauge deck thickness
  • Heavy-duty gear boxes

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Model FW15 FW20
Part Number (540 RPM) 920150 N/A
Part Number (1,000 SM RPM) 920148 Optional
Part Number (1,000 LG RPM) 920149 920151
Driveline Tri-Lobe Solid Shaft Spline
Input RPM 540 or 1,000 1,000
Tractor PTO HP Range 75 - 150 100+
Number of Selective Control Valves (SCV) 3 3
Side Frame Depth 11” 13"
Cutting Width 180” 240"
Cutting Height 2"-17" 2"-17.5"
Hitch Swivel Clevis Swivel Clevis
Transport Width 96" 110"
Overall Width 190" 247"
Overall Length 190" 242"
Deck Thickness 10 Gauge (.135") 7 Gauge (.180")
Weight 4,000 lb. 8,900 lb.
Tongue Weight 1,160 lb. 2,500 lb.
Main Driveline Rating 55 Series 55 Series
Blade Type .5"x4" Blade, Parallel Wing Lift Parallel Wing Lift
Blade Tip Speed 15,000 FPM 16,000 FPM
Wing Flex Up/Down 90º Up, 22º Down 90º Up, 22º Down
Suspension Central Spring Suspension Central Spring Suspension
Wheel Type Pneumatic 29” Aircraft Tires Pneumatic 29” Aircraft Tires
Number of Wheels 4 (standard), 6 or 8 (optional) 6 (standard), 8 (optional)
Wing Level Adjustment Adjustable Turnbuckle Self-Leveling Phasing Cylinder
Chain Shielding Double Front and Single Rear Single Front and Single Rear
Driveline Option (Splined Connection)   N/A
Fixed Knife Shredder Kit w/ Updraft Bladdes & Shrouds N/A  
Laminated 21” Tires (Set of 2)   N/A
Pneumatic 29” Aircraft Tires (Set of 2)    
Foam Filled 29” Aircraft Tires (Set of 2)    
Double Rear Chain Shielding   N/A
Double Rear Chain Package (Includes Belting) N/A  
Replacement Blade Kit 15'   N/A
Replacement Blade Kit 20' Center N/A  
Replacement Blade Kit 20' Wing N/A  
Replacement Blade Kit 20' Center Shredder N/A  
Replacement Blade Kit 20' Wing Shredder N/A  
Walking Tandem Axles (Per Axle) N/A  
Double Spindles each with 2 Hubs    

Made in the USA

Made in the USA

Erskine is proud to manufacture attachments in our Northern Minnesota state of the art facility.

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ISO 9001:2015 Certification

Our stringent quality control processes are ISO 9001:2015 certified.

USA Steel

USA Steel

We use top grade USA steel to bring you the highest quality, durable attachments.

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Our Promise

Our promise is to deliver quality, reliability and value with every attachment.

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Erskine Attachments, LLC
PO Box 1083
Alexandria, MN 56308 USA