The Imants RotoKnife is a versatile, effective linear aerator – The RotoKnife is designed to relieve surface compaction, improve aeration, reduce thatch build up and remove surface water. The RotoKnife is fast across the surface and is also a versatile rootzone management tool. The rotoshaft disc can be set in any of five positions offering flexibility in working depth and linear spacing, allowing deep slitting to a depth of 12″ or shallow slitting at 2″ spacing. The RotoKnife is an ideal rootzone enhancement tool for both warm and cool season grasses and can even be used as a surface smoothing roller.


Working Width
Transport Width
Working Depth
2 – 6″ Variable Depth
Disc Diameter
8″ , 18″
Disc Spacing
2″, 4″, 12″
Disc Thickness
1/8″, 1/10″
Number of Discs
6, 17, 18, 35
Weight (approx)
1750 lbs
Power Requirement
45 hp
Operating Speed
0.3 – 1.5 mph

Watch it at work

Watch how the RotoKnife works