Tracked or handheld
Stump Grinder
A JBM stump grinder removes a stump quickly and easily. Save yourself serious efforts. A JBM stump grinder with the power and endurance appreciated in JBM machines will support you.
Ease of operation: For example, thanks to the unique KDS swiveling system of our handheld stump grinders, which minimize fatigue when working. Or – in our fully hydraulic and tracked stump grinders – via a precisely controllable remote control of all functions. The operator benefits from optimum view on the grinding area from a safe distance. Without impairments due to removed grinding material or dust.
As known from JBM machines, your safety is highest priority in our stump grinders. The additional burst protection of pressurized hydraulic hoses, the stable grinding wheel housing with its comprehensive stone chip protection or the practical dead-man switch – just a few of many devices for occupational safety without compromises.
How do you call them?
Stump grinder, tree stump grinder or tree grinder?
Everybody talks about stump grinders. And everybody has a different name for them: stump grinder, tree stump grinder or tree grinder. But, they all have the same goal: to grind wood.
Stump Grinders from JBM for All Applications
Handheld Stump Grinder or Hydraulic and Tracked Stump Grinder?
A handheld stump grinder is beneficial
- when the usage location is difficult to access
- if you need more mobility, possibly across stairs
- if a small storage space is available only
- if you are looking for a cost-effective method for professional removal of small- to medium-diameter roots
Select a hydraulic and tracked stump grinder
- if a large number of tree stumps must be removed
- if the stumps must be removed quickly
- if the stumps to be removed have large diameters
- if the stumps to be removed should be ground with a greater depth
- in the case of extensive grinding work with restricted access
- for professional removal of tree stumps while working absolutely fatigue-free and safely
- if the operator would like to avoid impairments caused by removed grinding material or dust
Handheld Stump Grinder
You can rely on a JBM stump grinder: It grinds hard wood into small wood pieces – powerful, robust, and persistent. A strong helper for daily use. Especially suited for municipalities, rental stations, landscapers and arborists. We offer the handheld stump grinder in the following configuration::
- Swivel range 90 cm or 120 cm
- Grinding depth 25 cm or 30 cm
- Drive power 14 or 35 hp
Tracked Stump Grinder
The hydraulic stump grinder on crawler track significantly simplifies your work: It grinds hard wood into small wood pieces – powerful, robust, and persistent. Whether via stationary control or optionally with remote control. Benefit from outstanding off-road capabilities.
- Swivel range up to 14 cm
- Grinding dept to 50 cm
- Drive power from 35 to 60 hp
- With gasoline or diesel engine
Stump Grinder Equipment Features
– Standard equipment and options –
Drive: Engines installed in handheld JBM stump grinders
Handheld stump grinder: Drive
B&S engines
Engines from B&S: Benefit from high power density with a compact engine block design.
- Centrifugal Multi-Stage Air Cleaner: for safe operation under extreme conditions. Improved protection against contaminated air in engine compartment.
- Cast-iron Sleeve: for long engine life and low oil consumption.
- Magnetron® Electronic Ignition System: ensures maintenance-free, easy starting.
- OHV Technology: optimized performance that delivers longer engine life and improved fuel economy.
- Heavy-duty forged crankshaft and cast-iron camshaft: for longer engine life even under demanding use.
- Optional dual element air filter: for additional protection against air contaminations.
- Full pressure lubrication with oil filter: continuous oil delivery under pressure to critical engine components in the crankcase. For maximum lubrication and long engine life
Chassis & traction drive
Single-axle chassis without traction drive
The handheld JBM 2914 BD stump grinder is equipped with large wheels allowing the machine to be pushed easily.
Single-axle chassis with hydraulic traction drive
The single-axle chassis of the JBM 2935 BD is equipped with a hydraulic traction drive and integrated differential axle. This provides the user with numerous advantages:
- Ease of use due to electrical joystick
- Self-driving, forward and in reverse
- Turning in smallest spaces due to differential gear
- Fast transport across great distances
- Outstanding climbing abilities
- Large knobby tires ensure best driving characteristics, even in difficult terrain.
Lowering brake valves
Integrated lowering brake valves ensure safe operation of our JBM 2935 BD on sloping ground or loading ramps.
Mechanical wheel brake
The machines with single-axle chassis are equipped with a mechanical wheel brake. This ensures stability of the stump grinder during grinding.
Tires with knobby profile
Large knobby tires ensure best driving characteristics, even in difficult terrain.
Small machine dimensions
JBM stump grinders 2914 BD and 2935 BD distinguish themselves by extremely small machine dimensions for their respective power class. The dimensions of the 2914 BD are 60 cm and of the 2935 BD 75 cm. Based on that, these machines can also be used in the case of extremely restricted access dimensions.
Traction drive can be disengaged
The JBM 2935 BD can be manually pushed by disengaging the traction drive.
Transport lugs
Transport lugs are installed on the machine for safe transport.
Schwenksystem der handgeführten Baumstumpfräse
Stump grinder with integrated swivel system
KDS system
The KDS system is an integrated swivel system, where the upper carriage is connected to the chassis via a ball bearing mounted turntable. This way, the stump grinder can be swiveled independently from the wheels. This concept results in significantly more customer benefits.
- Ergonomic working with significantly less effort
- Fatigue-free operation
- Finely adjustable grinding movements possible
- Ground conditions have no influence on swivel motion or effort required for swiveling
Balanced machine weight
The balanced machine weight in connection with an optimum operator handle bar provide additional work simplification.
Height-adjustable operator handle bar
The height-adjustable operator handle bar allows safe, ergonomic operation in every grinding position.
Grinding arm
Robust grinding arm mounting
All handheld stump grinders made by JBM impress with robust grinding arm mounting. This is achieved by generously dimensioned, widely spaced grinding arm bearing points. This low-maintenance design reliably absorbs extreme loads occurring during stump grinding.
Grinding wheel drive – single-axle machines
In the JBM 2935 BD, the grinding wheel is reliably and safely driven via a magnetic clutch, which can be electrically activated.
Belt drive with large pulleys
Large pulleys allow a powerful and durable drive. Belt drives are significantly more reliable than toothed belt drives.
Grinding wheel and cutting blades
Stable blade mounting system
The high forces occurring during stump grinding are absorbed by stable, generously dimensioned bearings.
Segment grinding wheel
The segment grinding wheel with optimized cutting wheel layout ensures consistent, powerful grinding performance.
Stump grinder with quick exchange cutting blades
Cutting tools of the stump grinders
All cutting blades are connected to the grinding wheel via a quick-clamping device. The cutting blades can be easily replaced within shortest time. Thanks to carbide metal plates (Widea plates) specially designed for this application, a high blade service life is ensured.
Control and hydraulic system
Dead-man switch of single-axle stump grinders
In the case of JBM single-axle stump grinders, the dead-man switch (EMERGENCY OFF) is realized by a circumferential safety bar on the operator handle bar. This enables safe operation of the stump grinder.
Chassis drive of single-axle stump grinders
The chassis drive of single-axle stump grinder JBM 2935 BD is realized via an electro-hydraulic joystick. Driving forward as well as in reverse can be activated.
Grinding wheel drive of single-axle stump grinders
The grinding wheel of the JBM 2935 BD is activated electrically via a magnetic clutch. Activation as well as forced stop are realized within an extremely small time window. This means safe and efficient operation.
Operation and ergonomics
KDS system
In the case of JBM single-axle stump grinders 2914 BD and 2935 BD, a turntable positioned between wheel axle and grinding unit enables simple and ergonomic operation.
The horizontal swivel movement can be realized with significantly less effort. At the same time, the swivel movement is decoupled from the conditions of the underground.
Multi-height-adjustable operator handle bar
Operator handle bar
The operator handle bar in a handheld stump grinder can be adjusted to different heights so that the operator can always adjust the optimum operator handle bar height depending on the grinding depth.
Our contribution to ergonomic grinding with manually operated stump grinders.
Mechanical parking brake
All JBM single-axle stump grinders are equipped with mechanical parking brakes for grinding work optimization.
Maintenance & service
Good access to the cutting system for adjustments and replacements
Good access to all engine maintenance points
All points relevant for maintenance and service are immediately visible and can be easily accessed.
Lubrication points
All lubrication points can be lubricated quickly and easily.
Belt drives
All belt drives are tensioned easily, safely, and quickly using quick-tensioning systems.
Grinder safety
Designs according to the GS standard
JBM stump grinders offer maximum personal protection during operation as well as maintenance. For this purpose, our stump grinders are designed according to the high requirements of the GS standards and relevant regulations of the employers' liability insurance associations.
Pressurized hydraulic hoses with burst protection
Enjoy additional safety: All pressurized hydraulic hoses of a JBM are additionally wrapped in a strong burst protection fabric.
Hydraulic fluid suddenly escaping due to bursting hoses represents an extremely high risk to human health. We here at JBM understand our responsibility as manufacturer. We are more than happy to offer this protection, which should be standard everywhere.
Stable grinding wheel housing
The grinding wheel runs in a particularly stable grinding wheel housing, which reliably prevents the uncontrolled discharge of grinding material.
Personal protection curtain
Fully-hydraulic machines with stationary operation are configured with a personal protection curtain
Quality blades
Special blade steels ensure a high cutting capacity with very high service life. Blade breakage is avoided at the same time.
Electrical safeguard in single-axle machines (dead-man switch)
All machines are additionally equipped with a so-called “dead-man switch function). As soon as the operator leaves his position, the machine switches off automatically.
Hinged spray protection wall
A hinged 3-part spray protection wall (1 meter each) provides additional protection from flying grinding material.
Drive: Engines installed in tracked JBM stump grinders
Drive by B&S engine
B&S engines
Engines from B&S: Benefit from high power density with a compact engine block design.
- Centrifugal Multi-Stage Air Cleaner: for safe operation under extreme conditions. Improved protection against contaminated air in engine compartment.
- Cast-iron Sleeve: for long engine life and low oil consumption.
- Magnetron® Electronic Ignition System: ensures maintenance-free, easy starting.
- OHV Technology: optimized performance that delivers longer engine life and improved fuel economy.
- Heavy-duty forged crankshaft and cast-iron camshaft: for longer engine life even under demanding use.
- Optional dual element air filter: for additional protection against air contaminations.
- Full pressure lubrication with oil filter: continuous oil delivery under pressure to critical engine components in the crankcase. For maximum lubrication and long engine life
Stump grinder drive by Kubota engine
Kubota engines
Engines from Kubota: Compact engine block design with high power density.
- Low exhaust emission: Kubota has always paid special attention to the improvement of fuel consumption and exhaust emission values of their engines. All Kubota diesel engines are already EPA TIER II certified.
- Low noise emission: Kubota's experience in the construction of noise-reduced diesel engines and the E-TVCS (Three Vortex Combustion System) warrant a low noise emission level while operating under load as well in idle. With some engines series a floating mounted valve cover and molybdenum coated pistons provide for especially quiet and smooth-running engines (Super-Mini-Series / Super 03-M-Series / V3-Series).
- Quick start-up: The Super-pre-heat-system that belongs as standard equipment significantly shortens the pre-heat span and ensures that the engine starts up without problems even at low outside temperatures.
- High reliability: The robust construction that is typical for Kubota engines without employment of electronics, belts or similar expensive components that are prone to failure ensures high reliability and durability and a long engine life.
- Diverse equipment and extensive accessories: for example, for automatic cut-off in the case of overheating. It protects the engine from serious damage even under most extreme environmental conditions. The Hydraulic pump features a direct design.
- Service and maintenance: All areas and assemblies relevant for maintenance can be inspected immediately and are well accessible in JBM stump grinders. The air cooler is additionally protected using a fine particulate filter, which can be easily cleaned.
Engine decoupled from grinding arm movement
Decoupling of the drive engine of the tracked stump grinder from the vertical grinding arm movement
In the case of tracked and fully hydraulic JBM stump grinders, the drive engine is decoupled from the vertical grinding arm movement. This way, optimum engine lubrication is ensured in all grinding arm positions. Your advantages:
- High grinding height resp. grinding depth
- Increased engine service life
- Optimum weight distribution with low center of gravity of the machine
Special installation space concept
Optimized positioning of the drive engine
The special installation space concert in fully hydraulic JBM stump grinders ensures an optimum position of drive engine, air filter and air cooler. They are installed at maximum distance from the grinding area. This reduces maintenance and increases the service life of the engine due to reduced dust in the intake area of air filter and engine cooler.
Chassis & traction drive of stump grinders on crawler track
Hydraulic wheel drive with differential
The hydraulic traction drive with differential in machines with wheel drive allows fast and effortless transport of the stump grinder to the grinding area. Depending on the configuration, operation is realized via a stationary, swivelable compact hydraulic control block or via a radio remote control. By default, all machines are equipped with lowering brake valves so that they can be operated without danger on sloping ground or loading ramps. Large knobby tires ensure best driving characteristics, even in difficult terrain.
Tires with knobby profile
Large knobby tires ensure best driving characteristics, even in difficult terrain.
Wheel track widening
By widening the wheel track, the stability of the machine with hydraulic wheel drive can be increased even more.
Tracked stump grinder: Robust Hinowa chassis
Robust crawler chassis
An alternative to the stump grinder with wheel drive is the robust crawler chassis made by Hinowa with powerful drive engine. Driving in difficult terrain is possible without problems as well as tackling of inclines. This high traction with low ground pressure is a significant advantage of our crawler tracks. Thanks to the crawler chassis, stability during grinding activities is unsurpassed. The grinding capacity can be increased even more. The opposite-running tracks allows spot-turning of the machine.
Telescopic crawler track
Thanks to the telescopic crawler track, the tracks can be pushed apart hydraulically increasing the stability of the stump grinder significantly. This increases driving safety in particular in difficult, uneven terrain.
Small machine dimensions
All stump grinders excel in their respective power class with extremely small machine dimensions. The JBM 3935 RBH has a width of 79 cm and the machines of the JBM 59 RDH series of 88 cm. Based on that, these machines can also be used in the case of extremely restricted access dimensions.
Low center of gravity of the machine
The fully hydraulic stump grinders have a very low center of gravity due to the special design of the center engine concept. The result is significantly higher stability during transport in difficult terrain as well as during grinding.
Transport lugs
Transport lugs are installed on the machine for safe transport. The entire machine can be safely lifted using a central lug.
Swivel system
Central control block for swivel system and chassis
Hydraulic swivel system of tracked and fully hydraulic machines with stationary operation
The grinding arm is swiveled horizontally as well as vertically via a central control block with integrated chassis control. The swivel speeds are adjustable. The proportional valve technology enables a precisely dosed continuous advance motion.
The hydraulic control block can be swiveled to improve the view on the grinding work.
Swivel system via radio remote control
Hydraulic swivel system of tracked and fully hydraulic machines with radio remote control
The grinding arm is swiveled horizontally as well as vertically via a radio remote control. The swivel speeds are adjustable. The proportional valve technology enables a precisely dosed continuous advance motion.
Clear advantages of a radio remote control for tracked and fully hydraulic machines:
- Effortless and safe loading on trailers or trucks
- Easy and safe transport to the usage location, even at high driving speeds
- Optimum view on the grinding area at all times
- Maximum operator safety, as he is outside of the danger zone
- No impairment of the operator due to dust or grinding material
In short: Stump grinding without compromises
Horizontal swivel range
Thanks to the machine concept with fixed engine, we can achieve an extremely high swivel range with consistently good stability in our fully hydraulic machines. The actual swivel range (not to be confused with the swivel radius) is 145 cm. As a result, the machine must usually not be moved even in the case of large tree diameters.
Vertical swivel range
Thanks to the machine concept, where the engine is decoupled from the vertical swivel movements, our tracked and fully hydraulic machines achieve an extremely high vertical swivel range with consistent stability. This is significantly better than machines, where the engine follows the swivel motion of the swivel arm. At the same time, the engine service life is increased as optimum engine lubrication is ensured in every working position.
The result is a very large grinding range above and below the ground level of 50 cm.
Swivel arm mount
Stable, widely spaced swivel arm mounts ensure a stable continuous grinding movement. A the same time, the high vertical and horizontal forces are absorbed optimally. This is a prerequisite for vibration-free grinding.
Based on the design, the grinding bar mount cannot deflect.
Grinding arm
Robust grinding arm mounting
All stump grinders made by JBM impress with robust grinding arm mounting. This is achieved by generously dimensioned, widely spaced grinding arm bearing points. This low-maintenance design reliably absorbs extreme loads occurring during stump grinding.
Grinding wheel drive of tracked and fully hydraulic machines
The small grinding width based on the v-belt drive with hydraulic motor on top allows optimum view on the grinding area.
Lifting and swivel movement
The lifting and swivel movement is controlled via largely dimensioned hydraulic cylinder with optimum geometric steering position and results in high rigidity during grinding. Possible vibrations and sudden grinding wheel movements are avoided. This enables continuous and low-vibration grinding.
Grinding wheel and cutting blades
Stable blade mounting system
The high forces occurring during stump grinding are absorbed by stable, generously dimensioned bearings.
Segment grinding wheel
The segment grinding wheel with optimized cutting wheel layout ensures consistent, powerful grinding performance.
Quick-exchange cutting blades
Cutting blades
All cutting blades are connected to the grinding wheel via a quick-clamping device. The cutting blades can be easily replaced within shortest time. Thanks to carbide metal plates (Widea plates) specially designed for this application, a high blade service life is ensured.
Control and hydraulic system
Dead-mean switch of fully hydraulic stump grinders with stationary hydraulic control block
In machines with stationary control block, the dead-man switch is integrated in the control block. The ergonomic design of the dead-man switch allows activation as well as forced stop within an extremely small time window. This means safe and efficient operation.
Dead-mean switch of tracked and fully hydraulic stump grinders with remote control
In machines with remote control, the dead-man switch is realized using an automatic grinding wheel emergency stop in the case the switch is not operated. Release is via a button signal. A maximum in efficiency and safety.
Grinding function operation using the stationary control block
All swivel and driving functions are operated via a stationary control block with proportional valve technology. This enables continuous sensitive operation. The swivelable stationary hydraulic control block allows an optimum view on the grinding area. The grinding function is activated electro-mechanically.
Grinding function operation using the remote control
All swivel, driving, and grinding functions are operated via a radio remote control with proportional valve technology.
Clear advantages of a radio remote control for fully hydraulic machines:
- Effortless and safe loading on trailers or trucks
- Easy and safe transport to the usage location, even at high driving speeds
- Optimum view on the grinding area at all times
- Maximum operator safety, as he is outside of the danger zone
- No impairment of the operator due to dust or grinding material
In short: Stump grinding without compromises.
Operation and ergonomics
Remote control with safety control function
Remote control
In the case of fully hydraulic JBM stump grinders, all swivel, grinding, and driving functions are operated via a remote control with integrated safety control functions.
Optimum operation of all functions via proportional valve technology in connection with a remote control results in:
- Precisely dosed activation of all hydraulic functions allows thus continuous vibration-free working.
- Maximum safety for the operator as he can work at a safe distance from the stump
- Optimum view on the grinding work, as the operator position can be chosen flexibly
- The operator is not subjected to high dust loads during grinding
Stationary control block
Stationary operation
The stationary control block offers alternative operation of all swivel, grinding and driving functions with integrated dead-man switch. It can be swiveled for improved operator friendliness.
Hand rest
Unique vibration-free operation thanks to slip-resistant hand rest on stationary hydraulic control blocks.
Maintenance & service
Good access to the cutting system for adjustments and replacements
Good access to all engine maintenance points
The service hoods are mounted interlocking via rubber dampers. They can be opened easily and without tools. All points relevant for maintenance and service are immediately visible and can be easily accessed.
Lubrication points
All lubrication points can be lubricated quickly and easily.
Belt drives
All belt drives are tensioned easily, safely, and quickly using quick-tensioning systems.
Safety
Designs according to the GS standard
Fully hydraulic JBM stump grinders offer maximum personal protection during operation as well as maintenance. For this purpose, our stump grinders are designed according to the high requirements of the GS standards and relevant regulations of the employers' liability insurance associations.
Wrapped hydraulic hoses
Pressurized hydraulic hoses with burst protection
Enjoy additional safety: All pressurized hydraulic hoses of a JBM are additionally wrapped in a strong burst protection fabric.
Hydraulic fluid suddenly escaping due to bursting hoses represents an extremely high risk to human health. We here at JBM understand our responsibility as manufacturer. We are more than happy to offer this protection, which should be standard everywhere.
Stable grinding wheel housing
All grinding wheel run in a particularly stable grinding wheel housing, which reliably prevents the uncontrolled discharge of grinding material.
Safety curtain
Special rubber mats against stone chipping are mounted in the area of the grinding arm, which reduce the ejection of wood chips, soil and stones to a minimum.
Chain guard and special rubber mats
Chain guard
In addition to the special rubber mats, a chain guard is installed on machines with fully hydraulic drive.
Personal protection curtain
Tracked and fully-hydraulic stump grinders with stationary operation are configured with a personal protection curtain.
Quality blades
Special blade steels ensure a high cutting capacity with very high service life. Blade breakage is avoided at the same time.
Electrical safeguarding for tracked and fully hydraulic stump grinders (dead-man switch)
In tracked and fully hydraulic machines with stationary control, the so-called "dead-man switch function” is integrated in the hydraulic control. As soon as the operator leaves his position, the machine switches off automatically.
In machines with remote control, the grinding process is automatically interrupted via an integrated program inquiry, as soon as non-actuation of the remote control is detected.
Hinged spray protection wall
A hinged 3-part spray protection wall (1 meter each) provides additional protection from flying grinding material.