The FSI B21 is a compact, efficient stump grinder, designed for arborists, tree care professionals, and stump grinder operators needing reliable performance, easy transport, and hassle-free stump grinding.
The successor to the FSI B20, offers improved efficiency, optimized operator comfort, and simplified maintenance.
With the FSI B21, we raise the bar by introducing unique features not seen before in this segment.
Hill-hold system – Never worry about your stump grinder rolling away on ramps. The innovative braking system ensures safe and easy transport up ramps, over steps/curbs, and on uneven terrain. When activated, the stump grinder can be pulled backward safely without the wheels rolling forward.
No daily maintenance – The closed bearing housing is pre-lubricated for over 1000 hours of normal operation, eliminating the need for daily lubrication and reducing the risk of over- or under-greasing.
Simple V-belt tensioning – The FSI Power-Cut cutter disc is mounted with a one-sided bearing housing, allowing easy V-belt tensioning without the need to ensure parallelism.
Turn-table design – The turn-table design makes sweeping the cutter arm from side to side effortless, reducing strain and increasing precision for the operator.
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Key Features
14hp Kohler engine with recoil starter or a 11 hp Honda Engine
Narrow 68 cm width
Vibration-damped and height-adjustable operator handle
Safety bar disengages the cutter wheel when released
Multiple, easily accessible lashing points for simple and fast securing during transport
Lifting eye
Original FSI teeth
Optional equipment
Hour meter with alarm for 25 hours (lubrication of pivot axle) and 100 hours (oil change)
Drawbar for ball hitch – max speed 10 km / h (Not allowed on public roads)
Special color – order your FSI to match your company profile and stand out. Standard RAL colors are available, others on request
Why a FSI B21?
I chose the FSI B21 stump grinder because its size, performance, and value for money were a perfect fit for both small and larger jobs. It saves me time and money by fitting neatly into my van, allowing me to carry both the felled tree and the stump grinder in one trip. Plus, its simplicity makes maintenance a breeze—fewer parts to go wrong and easy to service myself.
Hill hold system (Pat. pending) – unique system developed by FSI to increase safety and give full control when moving on ramps, up steps or in terrain.
Closed bearing housing – no daily maintenance is required as the cutter wheel bearing is pre-greased from factory for more than 1000 hours of normal operation.
Turntable design – a well-balanced pivot point and two individual wheel brakes makes cutting easy on the operator
Improve ergonomics – position the vibration reduced operator handle as you prefer with many adjustment options
Safety bar – disengaging the cutter wheel upon release
FSI 21 - 8 pcs
87 cm
Maks 2,4 cm
30 cm
25 cm
11-14 hk
Petrol
No
68 cm
125 kg
