Stump Grinder JBM 3935 RBH
Fully Hydraulic Stump Grinder on Crawler Track with Professional Equipment
- Professional, fully hydraulic stump grinder for landscapers, gardening companies, and rental stations
- Ease of use through remote control or – alternatively – through stationary control
- Ideal machine for small to medium jobs or work with extremely limited access
- Compact design with small machine dimensions
- Machine width only 79 cm
- Good off-road capabilities thanks to hydraulic traction drive as crawler track or wheel chassis
- Smallest JBM stump grinder with gasoline engine as fully hydraulic machine
- Extremely large swivel range
- Weight approx. 900 kg
Stump Grinder JBM 3935 RBH – Highlights
– All equipment features: standard and options –
- Stump grinder with high-torque 2-cylinder Briggs & Stratton engine with 35 hp (26 kW)
- Fully hydraulic drive of all swivel, lifting, and traction drives as well as of the grinding wheel
- Large swivel range of 145 cm so that even large trunks can be ground without moving the machine
- Large vertical operating range: 50 cm below ground level and 50 cm above ground level
- Large grinding wheel 450 x 15 mm
- Hydraulic crawler track or – alternatively – fully hydraulic wheel chassis (optional with dual tires)
- Robust construction with extremely low center of gravity thanks to center engine concept
- High grinding capacity due to segment grinding wheel with 24 grinding blades
- Special cutting teeth ensure high grinding capacities and long service life
- Transport lugs for secure fastening
- Operator safety system with integrated dead-man switch for machines with remote control as well as for machines with stationary control
- Chain guard against stone chipping
- Easy maintenance thanks to well accessible lubrication points and maintenance points of the drive motor
- Small machine width of 79 cm only
- Machine dimensions L x W x H: 270 x 79 x 120 cm
- Machine weight: approx. 900 kg
Stump Grinder JBM 3935 RBH at a Glance
– All equipment features: standard and options –
Drive
- Briggs & Stratton gasoline engine 35 hp (26 kW)
- Decoupling of drive engine from vertical grinding arm movement
- Drive engine at maximum distance from the grinding area
Operation and ergonomics
- All swivel, grinding, and driving functions are operated via a remote control with integrated safety control functions (EMERGENCY STOP)
- Alternative operation of all swivel, grinding and driving functions via stationary control block and dead-man switch for grinding wheel drive
- Unique vibration-free operation thanks to slip-resistant hand rest
Chassis and frame
- Hydraulic wheel drive with differential and lowering brake valve for safe transport on sloping ground
- Tires with knobby profile
- Increased stability due to wheel track widening
- Stable crawler track with high torque
- Telescopic crawler track
- Low center of gravity of the machine due to center engine concept
- Small machine width of 79 cm
- Transport lugs
Swivel system
- Horizontal swiveling via large hydraulic cylinder with very large swiveling range of 145 cm
- Ball bearing mounted turntable in heavy-duty design for implementation of the horizontal swivel movement
- Vertical swiveling via large hydraulic cylinder with optimum geometrical steering for continuous grinding
- Stable, widely spaced bearing points to absorb vertical and horizontal forces
- Grinding height above ground level 50 cm
- Grinding depth below ground level 50 cm
- Extremely stable grinding due to low center of gravity of the machine and balanced weight distribution of engine and fluids in the tanks
- The vertical swivel movement of the grinding arm is decoupled from the engine
Grinding arm
- Robust grinding arm construction
- Widely spaced bearing points with over-dimensioned bearings provide a durable, very rigid construction
- Control via large hydraulic cylinder with optimum geometric steering position and results in high rigidity during grinding. Possible vibrations and sudden grinding wheel movements are avoided
- Small grinding width based on the v-belt drive with hydraulic motor on top allows optimum view on the grinding area
- Large pulleys for a powerful and durable drive
- Grinding wheel drive via hydraulic motor, which can be electro-hydraulically activated
Grinding wheel and cutting blades
- Stable blade mounting system
- Stable grinding wheel made of high-tensile steel, grinding wheel diameter Ø 450 x 15 mm
- Segment grinding wheel with increased cutting capacity
- Quality cutting blades made of wear-resistant holders and 24 carbide metal (Widea) cutting teeth
Control and hydraulic system
- All swivel, driving, and grinding functions are operated via a remote control with proportional valve technology
- Integrated safety control functions (EMERGENCY STOP) in machines with remote control
- As alternative to the remote control, in machine with stationary control, the swivel and driving functions are operated via a swivelable hydraulic control block
- Electro-hydraulic activation of the grinding function
- Integration of dead-man switch in machines with stationary control as well as in machines with remote control
- Filling level indicator for hydraulic oil
Maintenance and service
- Good access to the cutting system for adjustments and replacements
- Good access to all engine maintenance points
- Well accessible lubrication points
- Belt tensioning via quick-tensioning system
Safety
- Design according to the GS standard
- Pressurized hydraulic hoses with burst protection
- Reinforced steel housing in the area of the grinding wheel
- Integrated safety control functions (EMERGENCY STOP) in machines with remote control
- Dead-man switch (EMERGENCY STOP) for grinding wheel drive with stationary control
- Chain guard against stone chipping in the area of the grinding wheel to prevent escaping material
- Personal protection curtain for machines with stationary control
- Quality with extremely high breakage resistance
- Hinged spray protection wall, 3 pieces, 1 meter each