A Complete Guide to the Dennis Cassette System and Its Benefits

One Machine. Endless Turf Care Possibilities.

Modern turf management demands flexibility. Different seasons, different sports and different turf conditions all require specific maintenance techniques. That’s where the Dennis Cassette System truly shines.
Developed by Dennis, this innovative system allows turf professionals to switch between 16 interchangeable cassettes on a single power unit delivering cutting, scarifying, brushing, verticutting, slitting, sorrel rolling and raking with one machine.
Below is a complete breakdown of each cassette, what it does and the benefits of using it on natural turf.

Cylinder Cutting Cassettes

Precision mowing for elite-quality surfaces

5, 6, 8, 10 & 11 Bladed Cylinders

Each cylinder cassette is manufactured using high-quality British steel blades, arranged in a single spiral format and paired with an easy-to-set cutter adjustment system.

What they do
• Deliver a clean, scissor-like cut
• Produce consistent heights of cut
• Improve presentation and surface smoothness

Benefits on turf
• Encourages denser grass growth
• Reduces tearing and stress on the plant and therefore reduces disease.
• Enhances ball roll and playability
• Different blade counts allow fine tuning for seasonal growth and sport-specific requirements.
• Creates the best striping due to light reflecting off a clean level cut rather than the machete like cut of a rotary

Lower blade counts suit longer grass and winter conditions, while higher blade counts excel at fine finishes on bowls greens, cricket squares and golf surfaces. Cutting below 20mm? You will need our 10 blade cassette.

Scarifier Cassettes

Effective thatch and debris removal 1mm Scarifier 2mm Scarifier 2mm Tungsten Tipped Scarifier

These cassettes feature replaceable, wear-resistant blades with 12mm spacing, designed for both routine maintenance and renovation work.

What they do
• Remove thatch, moss, and organic debris
• Open up the turf surface
• Improve airflow to the rootzone

Benefits on turf
• Reduces disease pressure
• Improves drainage and nutrient uptake
• Promotes healthier, deeper rooting
• Tungsten tipped option provides maximum durability for heavy-duty renovation work
Regular scarifying keeps surfaces firm, resilient and responsive throughout the playing season.

Brush Cassettes

Surface cleaning and grass presentation Soft Bristle Brush Standard Brush Multi-Dense Brush

Designed for versatility, brush cassettes remove debris while lightly grooming the turf canopy.
What they do
• Remove moss, leaves, acorns, pine cones/needles and other light surface debris
• Lightly scarify the surface
• Lift grass prior to mowing
• Remove dew from the playing surface
• Disturb worm casts

Benefits on turf
• Improves cut quality
• Enhances visual appearance
• Reduces disease-conducive debris
• Ideal for pre-cut preparation and finishing passes
Multi-dense brushes offer more aggressive action, while soft bristle options are perfect for sensitive or fine turf.

Verti-Cutter Cassettes

Control lateral growth and thatch Verti-Cutter Verti-Cutter Tungsten Tipped Equipped with 1mm thick, 10-fingered replaceable discs, these cassettes are designed for regular use.

What they do
• Cut vertically into the sward
• Control lateral growth
• Reduce thatch build-up

Benefits on turf
• Encourages upright grass growth - lifts and cuts lateral growth which can slow ball roll down
• Limits invasion of annual meadow grass
• Tungsten tipped version excels under intensive use
• Cut rhizomes and stolons to promote new growth and improve density.

Verti-cutting is essential for maintaining elite playing standards on fine turf.

Aeration & Surface Relief Cassettes

Sorrel Roller Featuring replaceable spikes, the sorrel roller gently penetrates the surface.

What it does
• Relieves surface tension
• Reduces compaction
• Creates micro-holes in the turf

Benefits on turf
• Improves air, water and fertiliser penetration
• Encourages root development
• Minimal surface disruption—ideal for in-season use
• Reduces waterlogging

Slitter

A simple but highly effective cassette.

What it does
• Cuts narrow slits into the turf profile
Benefits on turf
• Relieves compaction
• Improves drainage
• Helps prevent excessive thatch accumulation
Perfect for maintaining surface health during busy playing schedules with minimal disturbance- doesn't disrupt play

Spring Tine Rake

Great for post-match recovery and grooming/ removal of thatch.

What it does
• Lifts lateral growth
• Removes dead material and broken leaves
• Grooms the surface after play
• Removes thatch from below the surface but with minimal surface disturbance- can be done throughout the season.

Benefits on turf
• Speeds up recovery after matches
• Encourages upright growth
• Improves presentation, airflow and the movement of water, nutrients and oxygen into the soil.
An essential tool for sports pitches subjected to regular wear.

Why Choose the Dennis Cassette System?

✔ Unmatched versatility – 16 cassettes, one power unit
✔ Cost-effective – multiple operations without multiple machines
✔ Time-saving – fast cassette changes
✔ Professional results – suitable for bowls, cricket, football, rugby, golf and ornamental turf amongst other sports
✔ Season-long flexibility – adapt instantly to turf conditions

The Dennis Cassette System isn’t just a mower—it’s a complete turf management solution. Whether you’re chasing a championship-level finish or maintaining durability through a long season, these cassettes give grounds professionals the tools to do it all, efficiently and precisely.

Note:
There are different cassettes available for different machines
Please check with us if you are insure which cassettes fit your mower.
Our cassette mowers are:
1) The FT-430, FT-510 and FT-610 (petrol) and the battery equivalent ES-510 (20'') and ES-610 (24'')
2) SuperSix (petrol)
3) G660 (27''), G760 (30'') and the G860 (34'') (petrol)
4) ES-760 (30'') and ES-860 (34'') (electric)

Book a demo with us today
www.dennisuk.com/cassettes
sales@howardsongroup.com