Digmight 15HP Stump Grinder vs MechMaxx SG28 PTO Stump Grinder

Last updated: November 3, 2026

The MechMaxx SG28 PTO Stump Grinder rates 3.8 among PTO stump grinders; the Digmight 15HP Stump Grinder rates 3.5 among walk-behind ones. The Digmight 15HP Stump Grinder costs $1,100 less ($1,399 vs $2,499).

Digmight 15HP Stump Grinder vs MechMaxx SG28 PTO Stump Grinder

Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

These two sit in different type classes (PTO and walk-behind), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.

Factor weightMechMaxx SG28 PTO Stump GrinderDigmight 15HP Stump Grinder
Overall rating3.8/53.5/5
Price 25%54 $2,49984 $1,399
Depth 20%79 8.5 in below grade56 8.8 in below grade
Height or wheel 10%80 28 in cutter wheel100 20 in above grade
Power 10%71 tractors up to 80 hp96 420 cc engine
Teeth 10%100 44 teeth62 9 teeth
Features 15%50 slip clutch0 none of the three
Warranty 10%33 1-year warranty0 warranty not published, scored as none

Specifications

MechMaxx SG28 PTO Stump GrinderDigmight 15HP Stump Grinder
Cutting
TypePTO, 3-point hitchWalk-behind
Depth below grade8.5 in8.8 in
Height above grade-20 in
Cutter wheel28 in12 in
Teeth449
Power
Engine-420cc 4-stroke OHV
Displacement-420 cc
Engine power-15 hp
Electric start-No
Tractor35 to 80 hp-
Hitch category1-
Slip clutchYes-
Build
Tow bar-No
Weight618 lb-
Warranty1 year-

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