Ko­matsu’s new eight-wheeled thin­ning spe­cial­ist

Ev­ery­thing to en­sure top per­for­mance in de­mand­ing ter­rain

Australian Forests and Timber - - Harvesters -

Fol­low­ing the suc­cess of the eight-wheeled Ko­matsu 931XC comes the Ko­matsu 901XC – an ag­ile thin­ning ma­chine with great ma­noeu­vra­bil­ity and fan­tas­tic sta­bil­ity. This har­vester is part of Ko­matsu For­est’s new XC prod­uct se­ries, fea­tur­ing ma­chines and ac­ces­sories spe­cially de­signed for ex­treme con­di­tions. The new Ko­matsu 901XC is a new har­vester for thin­ning in hilly ter­rain and on soft ground. The eight wheels, com­bined with the well­proven Ko­matsu con­cept, en­sure a ma­chine with fan­tas­tic sta­bil­ity, ex­cel­lent ma­noeu­vra­bil­ity and low ground pres­sure – which in turn means less ground dam­age.

All Ko­matsu har­vesters are based on the proven Ko­matsu con­cept, which was orig­i­nally launched back in 1984 and has made Ko­matsu For­est a mar­ket leader when it comes to sta­ble har­vesters. The con­cept is based on a cen­trally mounted cab and crane, which pro­vide a good balance be­tween ground pres­sure and low cen­tre of grav­ity. Other key fea­tures are the rigid ar­tic­u­lated joint and the swing axle, which in com­bi­na­tion with the cab’s tilt cylin­ders of­fer su­pe­rior sta­bil­ity and good han­dling in dif­fi­cult ter­rain.

The sta­bil­ity ad­van­tages of the Ko­matsu con­cept serve as cor­ner­stones in the de­vel­op­ment of its eight-wheeled har­vesters. More­over, the har­vesters in the XC se­ries are equipped with the swing­ing rear axle seen in the six-wheeled har­vesters, teamed with a bo­gie to cre­ate a highly unique so­lu­tion with twin sus­pen­sion sys­tems, the Ko­matsu Dou­ble Sus­pen­sion Com­fort Bo­gie, and ex­cel­lent off-road han­dling.

The 901XC is built us­ing the same high-class com­po­nents as all other Ko­matsu har­vesters with a pow­er­ful diesel engine that de­liv­ers high engine power while ful­fill­ing strict en­vi­ron­men­tal re­quire­ments with min­imised emis­sions of en­vi­ron­men­tally haz­ardous par­ti­cles and ni­tro­gen ox­ides. The ma­chine is also equipped with Ko­matsu For­est’s unique three-pump hy­draulics, 3PS, de­liv­er­ing a flow of a full 548 litres per minute at 1,500 rpm. The unique pres­sure and flow op­ti­mi­sa­tion of 3PS en­ables sev­eral crane and head func­tions to be used si­mul­ta­ne­ously with re­tained max­i­mum hy­draulic power, all thanks to the ma­chine’s ex­cep­tional hy­draulic power co­or­di­na­tion.

Just like all other Ko­matsu har­vesters, the 901XC fea­tures a high-per­for­mance op­er­a­tor en­vi­ron­ment. Some of the many ben­e­fits in­clude the large cab vol­ume, good vis­i­bil­ity, smart screen place­ment and a lev­el­ling func­tion to en­sure that the cab is al­ways kept hor­i­zon­tal. The cab also boasts high air­flow to cre­ate the right in­door cli­mate, as well as an er­gonom­i­cally de­signed seat with an op­tional ro­tat­able seat col­umn that can turn a full 180 de­grees. There are a num­ber of op­tions to choose from, such as ex­tra stor­age so­lu­tions, light­ing and floor heat­ing, as well as three dif­fer­ent joy­stick sys­tems, in­clud­ing EME, that fur­ther en­hance an al­ready com­fort­able op­er­a­tor en­vi­ron­ment.

Ko­matsu For­est’s hy­dro­static, power-op­ti­mised trans­mis­sion en­ables engine power to be fully utilised, pro­vid­ing con­sid­er­able ad­van­tages in dif­fi­cult ter­rain and ex­cel­lent climb­ing abil­ity. This clearly suits the 901XC, which also has re­in­forced Car­dan shafts in the pow­er­train – ev­ery­thing to en­sure top per­for­mance in de­mand­ing ter­rain. An­other im­por­tant ad­van­tage when thin­ning in hilly ter­rain is the lev­el­ling func­tion for the cab and crane, which makes the ma­chine a strong per­former even on in­clines.

This fea­ture is com­mon to all Ko­matsu har­vesters, but pro­vides par­tic­u­lar ad­van­tages when work­ing in steep ter­rain as the crane’s slew­ing force would oth­er­wise suf­fer when work­ing against a gra­di­ent. The first-rate crane func­tion­al­ity of the 901XC makes it eas­ier to per­form pre­cise crane move­ments and se­lect the right tree, even when fully ex­tended. The ma­chine’s sta­bil­ity also makes for more ef­fec­tive work at long reaches. The Ko­matsu 901XC is, quite sim­ply, a sta­ble ma­chine with fan­tas­tic off-road ca­pa­bil­i­ties, per­fect for thin­ning in steep ter­rain and on soft ground.

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