On ‘track’ to pro­vide the best op­tions for all oc­ca­sions

En­hanced vis­i­bil­ity with ex­cel­lent sight lines to both the right and left sides of the cab

Australian Forests and Timber - - HARVESTERS -

TIGERCAT BUILDS a full range of har­vest­ing so­lu­tions in­clud­ing track har­vesters, wheeled har­vesters, har­vest­ing/ pro­cess­ing heads and con­trol soft­ware.

There is a Tigercat so­lu­tion for most of the world’s at-the-stump har­vest­ing and road­side pro­cess­ing ap­pli­ca­tions.

Tigercat’s pur­pose-built forestry track car­ri­ers of­fer sig­nif­i­cant per­for­mance and dura­bil­ity ad­van­tages over ex­ca­va­tor con­ver­sions.

H820D lim­ited tail­swing track har­vester

Build­ing on the highly suc­cess­ful 822D/L830D plat­form, Tigercat has in­tro­duced the new H820D har­vester. It is pow­er­ful and ca­pa­ble, yet com­pact and nim­ble -- with a long reach 9.1 me­tre (30 ft) boom and lim­ited tail-swing, min­i­miz­ing ground dis­tur­bance and resid­ual stand dam­age in thin­ning op­er­a­tions. The hy­draulic sys­tem is op­ti­mized for max­i­mum per­for­mance and fuel ef­fi­ciency in har­vest­ing ap­pli­ca­tions.

The H820D shares the er­gonomic cab de­sign with the 822D feller buncher. Nar­rower front posts and larger side win­dows en­hance vis­i­bil­ity with ex­cel­lent sight lines to both the right and left sides of the cab. The sky­light has been re­placed by a cam­era sys­tem pro­vid­ing the op­er­a­tor with a much wider field of view and elim­i­nat­ing vis­i­bil­ity in­hibit­ing el­e­ments like de­bris for year-round ca­pa­bil­ity. The cab in­te­rior is quiet and in­stru­men­ta­tion has been thought­fully placed to op­ti­mize er­gonomics. The elec­tronic con­trol sys­tem in­ter­face uses a high­res­o­lu­tion, 180mm touch screen colour mon­i­tor. There are mul­ti­ple mount­ing points for ad­di­tional elec­tronic de­vices like at­tach­ment or har­vest­ing head mon­i­tors which can now be quickly and eas­ily lo­cated to the op­er­a­tor’s pref­er­ence.

The en­gine com­part­ment is eas­ily ac­cessed via the in­de­pen­dent, power­op­er­ated side plat­form and roof en­clo­sures. Ac­cess to com­po­nents and daily ser­vice points is ex­cel­lent with avail­able ground level fu­el­ing and easy ac­cess to the hy­draulic fil­ters, hy­draulic oil fill pump, swing gear­box re­mote oil level tank, cool­ing sys­tem com­po­nents and both sides of the en­gine.

The Tigercat FPT N67 en­gine is avail­able in Tier 2 or Tier 4 con­fig­u­ra­tions. The N67 en­gine is equipped with a sec­ond gen­er­a­tion com­mon rail fuel in­jec­tion sys­tem, al­low­ing it to achieve top per­for­mance in terms of load re­sponse, max­i­mum torque and top power with min­i­mum fuel con­sump­tion. Best of all, the N67 en­gine is fully sup­ported by Tigercat and the Tigercat dealer network. For Tier 2 re­gions, the N67 on the H820D is rated at 205 kW (275 hp) at 2,100 rpm and de­liv­ers a peak of 210 kW (282 hp) at 2,000 rpm.

H845D and H855D track har­vesters

The H845 and H855D track har­vesters are highly ef­fi­cient, durable and re­li­able car­ri­ers suited to a wide range of har­vest­ing and pro­cess­ing ap­pli­ca­tions. The H855D is de­signed for high per­for­mance har­vest­ing, atthe-stump pro­cess­ing and road­side pro­cess­ing du­ties in medium to large tree size op­er­a­tions. The H845D car­rier has 25% less tail­swing than the H855D and is well suited to plan­ta­tions and nat­u­ral stands and ex­cels in smaller di­am­e­ter tim­ber. Both are again pow­ered by the Tigercat FPT N67 en­gine and for Tier 2 re­gions are rated at 205 kW (275 hp) at 2,100 rpm and de­liver peak out­put of 210 kW (282 hp) at 2,000 rpm.

Both mod­els are avail­able with two-piece or tele­scopic ER boom sys­tems. The patented ER boom sys­tem al­lows the ma­chine op­er­a­tor to ex­tend and re­tract the boom on a hor­i­zon­tal plane smoothly and quickly us­ing a sin­gle joy­stick. The stick boom or “reach” joy­stick con­trols both the main and stick booms si­mul­ta­ne­ously, re­sult­ing in the at­tach­ment mov­ing ei­ther away from or to­ward the op­er­a­tor. The main boom and tilt func­tions op­er­ate in the tra­di­tional man­ner to ad­just the height and an­gle of the at­tach­ment.

Key to this tech­nol­ogy is re­duced en­ergy con­sump­tion. The ER sys­tem trans­fers en­ergy back and forth be­tween the main and the stick boom func­tions, re­duc­ing the to­tal en­ergy needed to move the boom sys­tem. This trans­lates to re­duced de­mands for power, pump flow and sys­tem cool­ing. Com­pet­ing so­lu­tions do not of­fer the sim­plic­ity and fuel sav­ings of Tigercat’s de­sign.

The en­gine and hy­draulic sys­tems are specif­i­cally de­signed to achieve max­i­mum per­for­mance and min­i­mum fuel con­sump­tion in har­vest­ing and pro­cess­ing ap­pli­ca­tions. High horse­power al­lows the car­ri­ers to main­tain hy­draulic flow as the pres­sure in­creases, main­tain­ing quick feed speeds and sig­nif­i­cantly boost­ing pro­duc­tiv­ity. A ded­i­cated at­tach­ment pump sup­plies oil to the pri­mary head func­tions, de­liv­er­ing flow and pres­sure to match the de­mands of the head with­out in­ter­fer­ence from other ma­chine func­tions and can be fully Load Sensed for max­i­mum fuel ef­fi­ciency. With a high per­for­mance valv­ing and con­trol sys­tem, the ma­chine is op­ti­mized for har­vester per­for­mance and fuel ef­fi­ciency. Un­der high flow con­di­tions like feed or saw op­er­a­tion, ad­di­tional oil is supplied from the Pump 2 cir­cuit’s main load sens­ing sys­tem.

The LH820D, LH855D and LH845D all fea­ture Tigercat’s patented lev­el­ing sys­tem, pro­vid­ing ex­cep­tional sta­bil­ity in steep slope ap­pli­ca­tions and op­ti­mum weight trans­fer. It uses two mas­sive hy­draulic cylin­ders and heavy steel sec­tions for a so­lu­tion that is both sim­ple and ro­bust. Due to the unique ge­om­e­try of the lev­el­ing sys­tem, the ma­chine is well bal­anced on slopes. Re­gard­less of the an­gle of the un­der­car­riage in re­la­tion to the up­per, the track pres­sure is even all the way along the bot­tom of the tracks as long as the up­per is close to hor­i­zon­tal. This makes the ma­chine feel very sta­ble and pre­dictable. In ad­di­tion, the ramped un­der­car­riage (both the front idler and the rear gear­box are set higher than the cen­tre­line of the un­der­car­riage) al­lows the ma­chines to eas­ily drive up over rocks and stumps.

A Tigercat LH855D per­form­ing road­side pro­cess­ing in Utah, USA.

The H845D pro­cess­ing pine.

The new Tigercat H820D gives log­gers new choice for a ver­sa­tile lim­ited tail­swing har­vester car­rier.

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