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Hess Junior single wood sanding machine
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Pictures and videos were taken at the customer's site before dismantling.
The machine has now been dismantled and stored in our warehouse and is ready
for dispatch.

Description:
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Basic structure:
Stable, heavy welded construction made of thick-walled rectangular hollow
profiles
with additional, statically calculated stiffeners for optimal
vibration damping.

Offset sanding units with large-dimensioned
belt drive drums for slip-free belt running. Two-point extraction for direct
and airborne dust extraction with integrated blow-off device. Sanding units
in heavy steel plate construction as the basis for vibration-damped,
smooth belt running. All guides as ball linear sets on hardened and
ground shafts. Long-lasting precision thanks to dust and dirt protection
of the ball linear sets. Contact roller and sanding shoe in a balanced ratio
to the sanding belt grain load. The large drive drums guarantee the full
transfer of the 5.5 kW drive power of the grinding motors to the grinding belt.
This enables the greatest possible chip removal. Automatic machine stop
triggered if the belt breaks. Visual display on the control panel. Sanding shoe
for finishing made of special material with optimal heat dissipation and
additional sliding coating. Easy handling when changing the coating. Sanding
belt tension via appropriately dimensioned compression springs. Sanding belt
relaxation for belt change using a pneumatic device for sensitive, distortion-
free application of new belts. Upper grinding unit and brush device (additional
equipment) centrally motor-adjustable.

Wood guide in the infeed area for hard guide and pressure rollers mounted on
both sides. Tilt-proof transport of profiled workpieces on calibrated conveyor
belts with continuously adjustable feed speed.

Automatic machine stop triggered by wood thickness control device.

Visual display on the control panel.

Infeed table manually adjustable via a fine-running, precise threaded spindle
for lower grinding chip removal via a scale (resolution 0.1 mm). The long
column table guide guarantees absolute parallel adjustment. The flight circle
adjustment to the outfeed table is achieved by adjusting the height of the
lower grinding unit via a precise threaded spindle and scale display
(resolution 0.1 mm).

Clear, user-friendly arrangement of all electrical functional, operating and
display elements on the front of the machine: grinding unit below, grinding
unit above, workpiece transport device, grinding thickness adjustment, brushing
device above/below, belt utilization, operating display, fault display. All
motors are electrically protected against overload.

Technical data:
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Grinding belt speed: 25 m/sec. Grinding width: 190 mm
Grinding thickness: 4 - 150 mm
Shortest workpiece length: 280 mm
Feed speed, continuously adjustable 5 - 25 m/min.
Grinding belt dimensions: 200 mm wide, 1850 mm long
Electrical equipment in accordance with VDE
Electrical connection: 400 V., 3/N, 50 Hz.
Pneumatic connection: R 3/8", 6 bar, 80 NL Grinding units: 2 x 5.5 kW Feed:
0.75 kW Height adjustment: 0.18 kW
Pneumatic connection: R 3/8", 80 NL, min. 6 bar, max. 8 bar Extraction air
volume: 2 x
2000 to 2500 m3/h 20 - 25 m/sec.
Extraction connection nozzle: 2 x 180 mm diameter, at the top of the machine
housing

External dimensions: without control cabinet 1750 mm wide, 1850 mm high, 1000
mm deep

with control cabinet 1960 mm wide, 1850 mm high, 1000 mm deep

Working height: 835 mm

in the range 4-20 mm only without guide ruler
Paint finish: RAL 7030 stone grey with RAL 1018 zinc yellow

Additional equipment:

1 digital display for motorized sanding thickness adjustment

1 device for oscillating sanding belt utilization Device for oscillating
sanding belt utilization to increase the service life of the sanding belts and
improve the surface finish through motor-driven sanding unit adjustment.
Connected load: 0.12 kW, 380 V, 3/N, 50 Hz

1 brushing and finishing device for better surface finish, integrated into
the basic machine. Two special brush rollers arranged one above the other, 150
mm
diameter, in synchronous motion for feeding. Separate height adjustment of the
brush rollers on precise slide guides for wear correction.

1 pneumatic workpiece blow-off device after the brushing and finishing device

(Technical data according to the manufacturer, without guarantee!)