Introducing the new
Dedicated Stump Grinder STX-26
Features
• Powerful Kawasaki 26hp V-Twin engine
• Toro TX patented steering system
• Single 18lt fuel tank
• Counterbalanced wheel motors
• Reverse safety plate
• Hydraulically driven stump grinding head.
Making short work of grinding stumps.
The Toro Dedicated Stump Grinder STX-26 will give you strength and stability when grinding
stumps. The V-Twin-cylinder Kawasaki engine will ensure an easy start every time, while
counterbalanced wheel motors will prevent any movement to help you get the job done faster.
For more information call 1800 356 372
www.toro.com.au
Dedicated Stump Grinder STX-26
Specifications
ENGINE
FUEL SYSTEM
HYDRAULIC
SYSTEM
Power: The engine used in the STX-26 is a Kawasaki FX730V, 26hp,
4-cycle, air-cooled, V-twin engine with vertical crankshaft, overhead
valves and pulse fuel pump
Engine Cooling: Air-cooled
Air Cleaner: Dual element ‘KAI’ air filter with rotating metal intake screen
Muffler: Fuel pump side mounted muffler
Fuel Filter: In-line paper filter, on-engine
Oil Filter: Spin-on oil filter
Controls: Dual remote cable controls (throttle and choke)
Drives: Main driveshaft – 2.5cm (1.00inch) diameter x 8cm (3.15inches)
long with 0.64cm (0.250inch) keyway
Rotation: Anti-clockwise when viewed from the PTO side
Starter: Solenoid shift type electric starter motor
Displacement: 726.0cc (44.3 cubic inch)
Bore: 78.0mm (3.1 inch)
Stroke: 76.0mm (3.0 inch)
Power: 19.0kW (26.0 hp) @ 3600rpm (gross), 16.8kW (22.5 hp) per SAE J1349
Peak Torque: 57.1Nm (42.1ft-lbs) @ 2400rpm (gross), 48.5Nm (35.8ft-lbs)
@ 2400 rpm per SAE J1349
No-Load Speed: 3600 rpm ± 100 rpm
Low Idle Speed: 1550 rpm ± 100 rpm
Oil Capacity: 2.1 litres (1.9 Imperial quarts) with oil filter change 1.8 litres
(1.6 Imperial quarts) without oil filter change
Oil Type: 10W-30 engine oil
Dry Weight: 45.0kg (101.0 lbs)
Angle Of Operation: Up to 25 degrees
CONSTRUCTION
Frame Covers: The frame has top and rear access covers made
of 10 gauge (3.4mm / 0.1345inch) steel plate.
Control Tower: The bolt-on, welded, 10 gauge (3.4mm / 0.1345inch)
tower houses the control linkages and valve.
Track Frame: The left hand and right hand track frames are modular,
6.35 mm (0.25 inch) steel weldments to which all track components
and the wheel motors are mounted.
Grinder Head: The grinder head is a fabricated weldment with a selfcontained, greaseable bearing housing and greaseable pivot locations.
The grinder is a direct drive design.
Outer bearing: Greased flange bearing with squeeze locking collar, 6.8cm (2.68inch) ODx3.8cm (1.5inch) ID.
Drive wheel: Welded steel drive hubs couple to the grinder wheel, which connects to the grinder motor through a tapered shaft,
The drive hub mount directly onto the grinder wheel, on which
the grinder pockets and teeth are directly mounted.
No. of Teeth: 12 (6 per side).
Grinder shield: Two bolt-on, 2-ply 7.2mm (0.28inch) rubber shields
wrap around the sides and rear section of the grinder head and keeps
grinder chips contained to the grinder head of the machine.
TRACTION
SYSTEM
Track: The tracks are nylon fabric reinforced, endless rubber rings with
22 internal drive lugs. The outer tread on the tracks is an aggressive
L-shaped pattern with pitched crosscuts.
Track Width: 14.94cm (5.88inches)
Track Pitch: 8.76cm (3.45inches)
Drivewheel: The drive wheels are single-piece, austempered ductile
iron, squirrel cage castings. The wheels are mounted directly onto the
tapered shafts of the wheel motors.
Fuel Tank: The fuel tank is a natural-coloured polyethylene rotational
moulding with a bottom fuel outlet and vented fuel cap.
Capacity: 18.2 litres (4.0 imperial gallons)
Fuel Shut Off: Manual in-line fuel shut off
Fuel Type: Unleaded petrol (87 pump octane minimum)
Gear Pump: A dual section 53.0 lpm (11.7 Imperial gpm) and 7.6 lpm
(1.7 Imperial gpm) gear pump powers the lift, rotational and grinder
hydraulic systems.
Mounting: SAE A-Mount ‘twist lock’
Shaft: 19.5mm (0.75 inch) straight keyed shaft
Displacement: 280cc/rev (17.1 cubic inch/rev)
Control Valve: A two-spool, parallel circuit mono-block valve controls lift
and stump grinder head functions via the control and boom elevation lever.
Main Relief Setting: 140 bar (2030 psi)
Swing Spool: A 3-position spool controls forward and reverse chain rotation
Lift Spool: A 3-position, finely metered spool controls the lift and lower function of the grinder head
Hydrostatic Drive: The traction circuit is powered by independent, belt
driven hydrostatic pumps and LSHT motors in dual closed loop systems.
The pumps are Hydro-gear PG pumps and have service bypass valves for
towing. The pumps are mechanically actuated by the patented Toro TX
traction control system, utilizing on-pump neutral centering systems.
Pump Displacement: 10 cc/rev (0.61 cubic inch/rev)
Pump Speed: 3600rpm
Pump Mounting: SAE ‘A’ two bolt flange
Drive Pulley: 10cm (4.0 inch) diameter 5K section belt pulley
Motor Displacement: 280 cc/rev (17.1 cubic in/rev)
Motor Mounting: Four bolt wheel motor mount
Shaft: 3.2cm (1.25inch) tapered shaft with 2.5cm (1.0inch) threaded end
Lift Cylinders: The lift circuit has a single hydraulic cylinder that controls
the grinder arm height and rotation.
Bore Size: 5.1cm (2.0 inches)
Rod Size: 2.5cm (1.0 inches)
Stroke: 25.4cm (10 inches)
Working Pressure: 183 bar (3000 psi)
Rotation Cylinder: The rotation circuit has a single trunnion mounted
hydraulic cylinder that controls the grinder head rotation.
Bore Size: 5.1cm (2.0 inches)
Rod Size: 1.9cm (0.75 inches)
Stroke: 22.5cm (8.87 inches)
Working Pressure: 183 bar (3000 psi)
Grinder Motor: The trencher is direct driven by a LSHT motor
Motor Displacement: 40.9 cc/rev (2.5 cubic in/rev)
Shaft: 3.2cm (1.25 inch) tapered shaft
Tank: The hydraulic tank is a fabricated weldment integrated into the
main frame. The tank has an oil level sight glass, a mounting port for
the main oil filter, and a remote breather connected via a hose.
Capacity: 23.8 litres (5.2 Imperial gallons) – full
22.7 litres (5.0 Imperial gallons) – nominal fluid level
Hydraulic Fluid: Use 10W-30 or 15W-40 detergent, diesel engine oil
(API service CH-4 or higher). Amsoil Slip Lock (2 x 4 oz bottles) must
be added when changing the fluid.
Cooler: An aluminum eight tube cooler cools the oil returning from
the spool valve. Cooling air is provided by dual electric fans.
Hoses: All high pressure hoses are 1.3cm (0.50 inch) ID abrasion resistant
hoses with ORFS swiveled ends except for the gear pump to the valve,
which is 1.6 cm (0.63 inch) ID. The suction hose is a 2.54cm (1 inch)
ID formed hose. The return hose is a 1.9cm (0.75 inch) ID low pressure,
clamped hose.
Filter: 20 micron in-tank return line filter.
Frame: The main frame is a fabricated weldment constructed mainly
of 6.4mm (0.25inch) steel plate with in-frame 7 gauge (4.6mm / 0.1793
inch) welded hydraulic tank.
Wheel Diameter: 29.54cm (11.63inches)
No. of Teeth: 11
Tensioner: The tracks are tensioned by the front road wheels. The
tensioners slide in tubular structures on the track frames and is adjusted by
a 15.9mm (0.625inch) bolt, and clamped into place on the track frame tube.
Road Wheels: Constant track ground pressure is maintained by 6
ductile iron road wheels on each side. The road wheels each have
a sealed bearing that are protected by a integrated double lip,
shielded seal on the inside and a steel cap with a gasket on the outside.
ELECTRICAL
SYSTEM
Battery: A 12 volt, BCI group U1 battery with 300 CCA powers the
electrical system.
Gauges: A mechanical hour meter is standard.
Cooler Fan: The hydraulic cooler is cooled by a 12 VDC, 0.5 amp, circular fan.
Ignition: The ignition switch is panel mounted with STOP-RUN-START positions.
Fuses: The machine has a fuse block with four separate fuses, including
10, 15, 25 and 30 amp circuit.
Interlocks: Switches are installed on the machine to ensure the following
requirements:
• To start the machine, the auxiliary hydraulic valve must be in neutral.
• To start the machine, the traction control must be in neutral.
CONTROLS
Engine: All engine controls are panel mounted, including the ignition,
throttle and choke. The throttle and choke are remote lever/cable operated.
Steering: Toro TX patented control system is used. System consists of a
single piece control handle and reference bar are mechanically connected
to the swash plate levers on the hydrostatic pumps. Forward machine
movement is caused by pushing or squeezing the handle. Backward
movement is caused by pulling or squeezing rearward. The control can
be twisted or rotated to turn the machine. The control has adjustments
for eliminating creep and for straight travel. A backup plate pushes the
control towards the neutral position to prevent inadvertent backing into
the operator.
Lift & Rotate: A pivoting lever on the right hand side of the control panel
connects to the lift spool on the control valve and actuates the spool for
the lift cylinder. This lever can also be actuated side to side for rotation of
the grinder head.
Auxiliary: A two-step, electrical (operator presence) button on the control
lever connects to the grinder spool on the control valve and actuates the
spool for the grinder motor.
DRIVE
SYSTEMS
Hydro Drive: Hydrostatic drive pumps are driven via a poly ‘5K’ section,
spring tensioned belt.
Pump Drive: The gear pump is direct coupled to the engine through
a polyurethane flex coupling system.
PERFORMANCE
Grinder Depth (maximum): 31.75cm (12.5 inches) below grade
Grinder Height (maximum): 83.82cm (33.0 inches) above grade
Grinding Angle: 0 – 65.0 degrees
Head Swing: 119cm (47 inches)
Wheel Diameter: 48.3cm (19.0 inches) to tooth
Wheel Speed: 1185rpm (95% efficiency)
Torque Approximately 111.2Nm (82.0 ft-lbs) @ 179.2bar (2600psi)
(95% efficiency)
Groundspeed Forward: 0 – 6.8km/h
Reverse: 0 – 2.6km/h
Ground Pressure: 30.3kPa (4.4psi)
WARRANTY
Warranty: Two years or 1000 hour limited warranty
TOR0159