Great-plains SLD350 Operator Manual User Manual download pdf (Page 21)

Simba SLD

602-262M-ENG

2013-07-25

The Great Plains Simba SLD is an

amalgamation of time proven, successful

Great Plains design components brought

togethertoformthisimportantdevelopment.

The Simba SLD has been designed to

provide a one pass mix with a fissured

layer at disc depth for through drainage

and root access to lower horizons.  This

enables rapid drainage and access after

rain, creating a greater effective capacity

formoisturecomparedtoploughingforthe

sameeffectivetotaldepthofcultivation.

Inprinciple,themachineisatandemdisc

with trip reset Pro-Lift tines, designed for

low draft, high speed operations.  The

addition of a rear mounted roll enables

moreeffectivecultivationinonepass.The

leadingsetofdiscbladescultivatethetop

horizon, minimising clod formation and

reducingtineloadingsandblockage.This

starts the ‘top down’ cultivation process,

retainingweatheredtilthinthesurfacelevel

forstaleseedbedpurposes.Thetripreset

tines follow the disc blades to shatter at

depth retaining the surface intact to work

as a stale seedbed.  This eliminates the

problemof‘wetyears’innon-ploughbased

terms.ThekeytotheSimbaSLD’ssuccess

isthelowerdrafttinepointandwingwhich

maintain shatter across the full width of

cultivation.  The rear roll or trailing press

thenconsolidates thesurface, cracksany

clodsandrmsthesoilprolebefore/after

the rear gang completes mixing to depth.

The corrugated top and shattered lower

horizonsareleftfullyweatherproofto any

conditions between cultivation and drilling

whilstretainingmoisturebelowthesurface

for rapid straw breakdown and optimum

establishmentofthenextcrop.

4.Adjustment/Operation

4.2 Disc Units

TheSimbaSLDfeaturestworowsofdiscs

which chop and mix the crop residue. A

discspacingof250mmensuresanetilth

andbeingarrangedinasymmetricalformat

around the centre line of the machine,

crabbingiseliminated,leavingthemachine

topullstraightmakingthemostefcientuse

ofthepoweravailable.

ThediscsttedtotheSimbaSLDare610mm

indiameter(24”).Theyaremanufactured

fromheattreatedchromeboronsteelwhich

ensures excellent wear resistance and

enhancedworkinglife.

EachdiscismountedonaPro-Activesprung

leaf linked to a track rod system. Gang

anglescanbevariedwitheaseandaccuracy

usingagraduatedadjuster.

Adjustable angling of the discs (between

10°-25°) ensures penetration and stubble

mixingareachievedinonepass.Working

depth can be varied simply via shimmed

adjusters. All this is achieved without

compromisetoconsolidation.

Alevel,evenlycultivatednishismaintained

by adjusting the balance of soil throw

betweenthefrontandreardisc.

Sprung leaves offer protection against

damage as well as offering a degree of

contourfollowingastheyexupanddown

inwork.

The centre disc unit can be adjusted

independently of all other disc units to

ensure a level nish across the machine

width.

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Great-plains SLD350 Operator Manual User Manual Page 21

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