Dales Agri Sales Agency, Hexham, Northumberland: The Stone

STONE-PEKKA stone pickers are developed by Finnish farmers. The factory is in Rantasalmi in
Eastern Finland, renowned for its stony soil. As such it is the best place for continuous development
and rigorous product testing. This ongoing development guarantees the STONE-PEKKA to be the
most reliable machine.

Rotators on each side of the STONE-PEKKA rotate against the direction of travel and collect the
stones into the machine where lifting drum tines move them along the sieve into the stone tank. Most
of the soil falls back onto the field. The STONE-PEKKA 6 has a 6 meter working width and a maximum
working capacity of 1.2 t/min. The STONE-PEKKA 4 and 5 have 4 and 5 meter working widths
respectively. The 5 and 6 have lifting drum widths of 113cm, and 80cm on the STONE-PEKKA 4.

CLEAN STONES

The STONE-PEKKA's soil sieve considerably reduces the amount of soil carried by the stones. It leaves the soil where it belongs,
in the field. The stones get cleaned and can be re-used as construction material or for roads. The sieving process takes place at
the tipping stage when the soil slips into the soil container, from where it can be returned to the field. A new mesh rear wall has
made the container even more durable.

EASY TOW

The stone picker is attached to a tow bar and the working depth is adjusted with the hydraulic drawbar.
The tow bar attachment reduces PTO shaft wear and the working depth remains constant, even in the most
difficult conditions. As the machine is towed the actual connection point doubles as a PTO connection.
There is no need for a wide angle PTO shaft. A stump jumper, situated on the machine end of the tow bar
helps your STONE-PEKKA to "jump" over permanent obstacles and stops the tractor's weight stressing it.
The tow bar remains fixed in on-road conditions.

FINNISH QUALITY

STONE-PEKKAs are manufactured with care from quality, durable Finnish steel components and
come with a one-year warranty. Special sieve design reduces stone lodging and lifting-drum tine wear.
New larger lifting tines offer three times the previous service life.

POWER TRANSMISSION

STONE-PEKKA power is transmitted with drive belts which eliminate shocks from stones. When required, they act as
clutches and transfer the power to the desired destination. Special strengthened belts have been developed for the lifting
drum actions. The bearings are over-sized SKF units to provide top class reliability.

ROTOR LIFT (optional extra)

Lift is achieved with a single-acting hydraulic cylinder which raises both rotors simultaneously. Mechanical locks fix
them in the top position and they are released using a rope. There is no need to disconnect the PTO shafts or wires.
The STONE-PEKKA is adjusted for work and transport from the comfort of the cab. In the basic model this action is
achieved with wire connections and stone hopper hydraulics.

ROTATION GUARD (optional extra)

In dusty conditions visibility to the STONE-PEKKA can be reduced to zero. With the rotation guard the operator can observe the rotor
and lifting drum. This will reduce belt damage and generally ease the operating process.

TECHNICAL DATA

	Stone-Pekka 4	Stone-Pekka 5	Stone-Pekka 6
Weight	3200kg	3400kg	3500kg
Working width	4m	5m	6m
Stone size	25 - 300mm	25 - 300mm	25 - 300mm
Output	700kg/min	1000kg/min	1200kg/min
Stone tank cap.	1.5 - 2 m³	1.5 - 2m³	1.5 - 2m³
Tyre size - Single axle	22.5 x 550	22.5 x 550	22.5 x 550
	22.5 x 700	22.5 x 700	22.5 x 700
Double axle	15.5 x 400	15.5 x 400	15.5 x 400
	17 x 500	17 x 500	17 x 500
	17 x 500 ELS	17 x 500 ELS	17 x 500 ELS
Rotor support wheels	195 x 14	195 x 14 axle	195 x 14 axle
Power requirements	19kW	21kW	23kW
Driving speed	3 - 6 km/h	3 - 6 km/h	3 - 6 km/h
Lifting drum tines qty	18	28	28


Standard equipment		Optional extras
Soil container Draw bar attachment Tyres 22.5 x 550 All PTO shafts Hydraulic PTO shaft with ext hose Sieve size tailored to cropping requirements	Crow bar Support wheels (5 and 6m models) Tool and spare parts container	Rotation guard Rotator hydraulic lift Jockey wheel 22.5 x 700 Axle 15.5 x 400 17 x 500 17 x 500 ELS Support wheels for 4m model