EX-40 Excavator Flail Mower | Eterra

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MSRP: $12,995.00
Save $3,245.00

A surcharge of $ is included to off-set the rising costs of steel | Learn more

with  |   Apply for Financing

SKU: ET-11E040-K001-63
MSRP: $12,995.00
Save $3,245.00

A surcharge of $ is included to off-set the rising costs of steel | Learn more

with  |   Apply for Financing

SKU: ET-11E040-K001-63
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616.00 LBS
Ships from Eterra.  Shipping Calculated at Checkout


The carbon steel market is poised to grow by 699.35 MT during 2020-2024 progressing at a CAGR of almost 8% during the forecast period." (Source: Business Wire)

This is what we are seeing all across the industry; day after day new emails from vendor's telling us that their prices are rising, every order we make for materials needs to be revised because the last price is no longer valid, and for good reason. The cost of steel materials has been steadily increasing throughout 2020, and it unfortunately has not slowed into 2021. The reduced capacities of companies in this industry due to Covid-19 health and safety regulations continues to have an impact. As a result, we are forced to increase our list pricing for 2021 and add a steel surcharge to off-set the rising costs that is projected to continue this year. We apologize for any inconvenience this may have on our close and prospective customers. We we will do what we can to keep our prices low when the opportunities are found, but right now we are left with little options.

Thank you for your understanding and continued support.


Product overview

Eterra EX-40 Heavy Duty Excavator Flail Mower


Introducing the EX-40 Excavator Flail Mower by Eterra, a robust and versatile land clearing solution designed to tackle grass, brush, and larger materials up to 4-5 inches in diameter with ease. This powerful flail mower stands out when mowing along roadsides, ditches, and other hard-to-reach areas that only an excavator can efficiently navigate.

Powered by reliable Permco gear drive motors, renowned for their durability, the EX-Series flail spins at an impressive 1900-2300 RPM, allowing for finer cutting and leaving a professional finish behind.

The electronically balanced cutting shaft ensures a smooth spin-up and efficient cutting, even as low as 1.5" off the ground. Featuring 20 Y-Knife flail blades, each weighing 2 ¼ lbs, lined along the electronically balanced shaft, the mower safely cuts and mulches materials up to 4-5 inches in diameter. With careful and patient operation, it can handle 6" materials as well.

Designed with a curve-formed housing, the EX-40 maximizes cutting capacity and optimal mulching by the free-swinging blades. This innovative design allows materials to move through the housing without any concerns about buildup. The durability of the mower is further enhanced by its composition of A572 Grade 50 High Strength Steel and AR400 skid shoes, protecting the frame during ground mowing.

For enhanced operator comfort, the EX-40 is equipped with a rubber vibration dampener, effectively absorbing and minimizing vibrations generated during operation. With a tip speed of 12,743 Feet/Min, this attachment is fully compatible with excavators, making it the go-to-choice for efficient and professional land clearing projects.

Note:  Every excavator is different.  Many machines (Especially older models) use only two pumps.  One to control your stick and rotation.  One for track drive and auxiliary flow (your mower).  For machines that have this type of pump arrangement, it is not possible to drive the machine forward and cut at the same time.  You will need to drive forward, stop and then sweep back and forth for cutting.  For operators with newer machines like Kubota and any Yanmar, you have three pumps so you can drive and cut at the same time.


  • Safely Cuts and Mulches Up to 4-5” Material
  • Can cut 6" Material with Slow, Patient and Safe Operation
  • 20, 2lb Y-Knife Replaceable Blades
  • Bolt-on Mount Plate
  • High Strength Steel Housing
  • Light Weight Design Reduces Risk of Machine Tipping
  • Direct Drive System (Reduced Wear Parts)
  • Electronically Balanced Cutter Shaft
  • Equipped with AR400 Skid Shoes
  • Safety Impact OSHA Safety Orange Powder Coat Finish

What's Included?

  • EX-40 Excavator Flail Mower
  • SMB-1000 blank mounting plate
  • Machine Specific Coupler (optional, added cost)
  • Hydraulic Hoses
  • Flat Faced Couplers
  • Couplers (if needed)
  • Case Drain Hose

Case drain not required for Bobcat, Yanmar, Kubota, Caterpillar or Case Excavators.


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Skid Steer Solutions LLC relies on trusted manufacturers to supply and support the products sold on SkidSteerSolutions.com and its representatives. The majority of attachment products for sale come with a manufacturer represented warranty against manufacturing defects for at least a 12 month period after the date of sale. Expendable components and "wear parts" including but not limited to blades, knives, teeth, oil, chain sprockets, skid shoes, knife mounting discs, and similar components are usually excluded from manufacturer warranties. Items sold as "demo", "return", "resale", "prototype", or "closeout" are generally not covered by warranty. Please see each manufacturer's limited warranty on our Warranty Page.


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