Caterpillar

In the fall of 2017, Challenger introduced the MT700 series, designed together with Fendt. Fendt brought a corresponding tracked tractor to the European market as the 900 Vario MT series. The engine was a 7-cylinder, 9.8-liter Agco Power unit. It featured two turbos and utilized all known technology for exhaust gas purification. The engine’s nominal speed was only 1700 rpm, with maximum torque achieved in the range of 1200–1600 rpm. The cooling fan had a Voith hydrostatically driven system.

The transmission was Fendt’s ML400, known as Accu-VT in Challenger terminology. The drivetrain included two hydrostats, one of which was disengaged at speeds over 20 km/h. The top speed of 40 km/h was reached at 1550 rpm. The lifting capacity was smaller on the Challenger compared to the corresponding Fendt model. For hydraulics, two 220 l/min variable displacement pumps were optionally available if needed.

Compared to previous Challengers, the suspension of the track system was improved: there were coil springs between the track system and the tractor, and additionally the carrier rollers within the track system were suspended. As an extra option, the cab was also coil-sprung. The cab was mostly the same as Fendt’s 1000 series Vario, and the display was a 10.4″ AccuTerminal. The wheelbase was 13 cm longer than in the earlier Challenger model.

Sales of Challenger tractors ended in 2023, and Agco focused on the Fendt brand also in North America.

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Tractors

Challenger MT738-MT743

At the end of 2020, Challenger announced new MT800 series tractors, which had hardly anything in common with their predecessors. Instead, they were almost identical to Fendt's earlier introduced 1100 Vario MT series. Challenger had, of course, had a significant role in developing both model lines. The engines were MAN's 15.2- and 16.2-liter models, which had considerably higher maximum torque than previous Agco Powers, but the torque increase remained between 10 and 16%. The maximum power was achieved already at 400 rpm. The Tier 4F emission standard engines featured a hydraulically driven cooling fan, variable geometry turbocharger, urea injection, cooled exhaust gas recirculation, oxidation catalyst, and particulate filter.

Fendt's stepless TA400T transmission had two hydraulic pumps, one of which could be disengaged to save fuel when the load was sufficiently low. The hydraulic variable displacement pump output was either 220 or, with two pumps, 439 liters per minute. The center rollers in the tracked chassis were hydraulically suspended. The hitch hook turned 28 degrees to each side during turns, and the lift arms moved 12 degrees. The cab was the same Fendt cab as in the MT700, but the controls had minor differences from Fendt. The AccuTerminal size was 10.4 inches.

In Europe, the focus was on selling the same tractors under the Fendt name, and the same conclusion was reached in the USA in 2023. This marked the end of the Challenger brand.

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Challenger MT851-MT867

The articulated MT900E, like the MT800E crawler tractor, was equipped with Agco Power's V12 engines. It had slightly more power and torque than the previous Caterpillar engines. Tier 4 emissions were achieved through urea injection, twin twin-turbos, an oxidation catalyst, and exhaust gas recirculation. The CAT transmission featured new programs that promised smoother shifting. A hydraulically engageable lock for the front axle was also available as an option. With two pumps, an optional hydraulic output of 322 l/min could be achieved. The Auto Guide 3000 automatic steering system, as well as the standard TMC display, remained unchanged. The MT900E marked the end of Challenger's attempt to penetrate the articulated tractor market.

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Challenger MT955E-MT975E

In the MT800 series, the jump was made from the MT800C to the MT800E in the autumn of 2013. The engine made its debut as the Agco Power 16.8-liter V12, which combined two 8.4-liter engines. The number of cylinders in the engine was not specified in technical tables or presentation texts. The engines met the U.S. emission standard Tier 4 Final and Europe's Stage IV. There were a total of four turbochargers arranged in two series. All emission control technologies were used except for a particulate filter. The torque increase percentage was the same 42% as in previous CAT engines. Hydraulic output was now standard at 224 l/min and optionally 321 l/min.

Everything else remained unchanged from generation to generation. Caterpillar’s 16+4 full powershift was introduced in the 2001 models. The gear ratios remained original. The maximum gear driving speed at nominal revs was 36.2 km/h, and at full revs, it reached 40 km/h. The cab was the old Pinnacle View, but the noise level was now listed as 74 dB instead of 73 dB. Steering was accomplished by adjusting the relative speed difference of the crawler tracks using a planetary gearbox driven by a hydraulic motor in the differential.

In Challenger wheel tractors, the 400D/500D/600D series corresponded to MF models 6600/7600/8600, and the 400E/500E/600E corresponded to the 6700/7700/8700 series. The MF-based models were part of Challenger’s lineup until 2020.

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Challenger MT845E-MT875E

In the Challenger MT700E series introduced in the autumn of 2013, the engines were 7-cylinder, Stage IV–compliant AGCO Powers. The 9.8-liter engines offered more power and especially more torque than their predecessors. They featured urea injection (SCR), exhaust gas recirculation (EGR), an oxidation catalyst and two turbochargers, and fuel consumption was promised to be 5 % lower than in the previous models. 

The transmission remained Caterpillar’s 16 + 4 full powershift, and the rear axle was also made by Caterpillar. Hydraulic flow was now a standard 224 l/min, with an optional 321 l/min upgrade. The fuel tank was now a standard 659 liters. The engine hood was given a new shape. Three different track undercarriage strengths were offered, with the maximum track width increased to 864 mm. 

The cab was largely unchanged, but it was now called Pinnacle View. AGCO’s 7.4-inch color display remained the same as before, and the automatic steering system included an additional 12-inch screen.

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Challenger MT755E-MT775E

In the MT745D models sold in 2012 and 2013, the new feature was an 8.4-liter AGCO Power engine. The power and torque were roughly the same as in the previous Caterpillar engines. The emission class was 3A. The engines had urea injection and four-valve technology. The maximum speed of the 16+4 Powershift transmission was reported, as before, to be 39.7 km/h, which was achieved at engine speeds higher than the nominal power rating. The category 4 lift had a lifting capacity of 11,790 kg. The hydraulics featured four standard electrical control valves, with six available as an option. The optional AGCO Auto-Guidance system included a new 12.5″ monitor. The cab was slightly updated. The steps rose electrically when the drive gear was engaged.

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Challenger MT745D-MT765D

Caterpillar sold the tracked tractors to Agco in 2002, and the brand changed to Challenger. Production was moved to Agco’s factory in Minnesota. The MT700 series had already been developed before Agco’s ownership. It was clearly more robust than the previous models 35-55, which partly used New Holland technology. The weight was now 14 tons instead of the predecessor’s 9 tons. A common feature of the model range was a continuously adjustable track gauge. Steering in the Challengers was not done by braking the tracks but by adjusting their relative speed difference using a planetary gearbox driven by a hydraulic motor located in the differential.

The engines were now Caterpillar’s 8.8-liter units instead of the previous 6.6 liters and equipped with four-valve technology. The emission level was EPA Tier II. Road speed had increased to 40 km/h in versions brought to Europe. The 16+4-speed Powershift transmission and the rear axle were also manufactured by Caterpillar. The weight distribution was 40/60, aimed at balance for pulling tasks. The tracks were hydraulically suspended. Standard features included 4 electrically controlled hydraulic remotes and power beyond. The lifting capacity was 11.7 tons. The cab was clearly larger than before. The electrical system was based on a CAN bus. Headland automation was standard.

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Challenger MT735-MT765

More from this manufacturer

In 1994, Caterpillar introduced the smaller Challenger models 35 (210 hp) and 45 (240 hp). The track width of these models was adjustable, designed with row crop farming in mind. Considerably more emphasis was placed on design compared to the large, angular Challengers. These models were manufactured by New Holland in Winnipeg, and the cab, powertrain, and hydraulics came from NH's Genesis series.

The engines were Caterpillar's 6.6-liter turbocharged and intercooled units. The full powershift transmission had 16+9 gears. The gearbox featured various programmable automatic shifting and preselection functions. In 1997, the lineup was complemented by the 270-horsepower Challenger 55, which had a 7.2-liter engine.

In 1997, Claas and Caterpillar entered a cooperation agreement whereby Cat began selling Lexions in North America and Claas sold Challengers in Europe. The smaller series of green Challengers were launched in the fall of 1997. On Claas models, the track width of the tracks was standard at 63.5 cm.

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Challenger 35

malli

hinta (sis. alv)

Series specifier

Manufacturer name

Model specifier

Imported to Finland

Years

Engine model

Cyl/Turbo/Intercooler

Displacement

Bore x stroke

Rated power

Max power

Torque

Gears

Creeper speeds

Synchronized gears

Powershift gears

Reverser

Speeds in km/h

Max. speed 

Hydr. flow l/min

Hydraulic pressure

Lift controls

Lift capacity

PTO speeds

Brakes

Steering

Turning circle m 2WD

Turning circle m 4WD

Front tyres 2WD

Front tyres 4WD

Rear tyres 2WD

Rear tyres 4WD

Weight 2WD

Weight 4WD

Height with cab

Length (2WD/4WD)

Wheelbase (2WD/4WD)

Fuel tank

Cab noise level

Solid cab

Diff. lock

Autom. differential locks

Air suspension seat

Air conditioning

Trip computer

Creeper gear

sylinterien lukumäärä

iskutilavuus

iskusuhde

suurin vääntömomentti, nm

suurin vääntömomentti, r/min

vääntömomentin nousu

polttonesteen kulutus suurimman tehon pisteessä

kytkimen tyyppi

ajovoimanotto

nopeus eteenpäin moottorin nimellisnopeudella, pienin

nopeus eteenpäin moottorin nimellisnopeudella, suurin

jarrut

hydrauliikan suurin paine

hydrauliikan suurin tuotto

nostolaitehydrauliikan hallinta

ulkopuolinen hydrauliikka, venttiililohkoja

1-toimisia

2-toimisia

nostovoima (kn=100 kg)

hydrauliikan tyyppi

kääntöympyrän halkaisija ilman ohjausjarrua

eturenkaat

takarenkaat

kokonaismassa säiliöt täynnä vakiovarustein

etuakselipaino

taka-akselipaino

suurin korkeus (ohjaamon ylimpään kohtaan)

kokonaispituus

akseliväli

maavara, pienin

polttoainesäiliön tilavuus

korkein melutaso

etuakselin tasauspyörästön lukko

etunostolaite

etulokasuojat

ilmastointilaite

perävaunun jarruventtiili

ilmaistuin

ohjauksen tyyppi

Challenger 45

Challenger 55

Caterpillar/Claas Challenger 35-55

Etusivu

Ajoneuvot ja ympäristö

Huolto ja tekniikka

Lukijan idea

Maarakennus

Maatalous

Osastot

Metsä

Pääkirjoitus

Uutiset

Weteraani

Yritykset ja tapahtumat

Koneviesti

Lehdet

Konedata

Palvelut

Tilaa Koneviesti

Asiakaspalvelu

Jätä ilmoitus

Tilaa uutiskirje

Lähetä uutisvinkki

Lähetä palautetta

Lähetä oikaisupyyntö

Toimituksen yhteystiedot

Mediamyynnin yhteystiedot

Ota yhteyttä

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Model	Challenger 35	Challenger 45	Challenger 55
Imported to Finland	No	No	No
Years	1994-2002	1994-2002	1997-2002
Engine model	3116 ATAAC	3116 ATAAC	3126 ATAAC
Cyl/Turbo/Intercooler	6TI	6TI	6TI
Displacement	6600 cm³	6600 cm³	7200 cm³
Bore x stroke	104,9×127 mm	104,9×127 mm	110×127 mm
Rated power	212/2100 hp DIN/rpm	242/2100 hp DIN/rpm	270/2100 hp DIN/rpm
Torque	-	-	-
Gears	16+9	16+9	16+9
Synchronized gears	powershift	powershift	powershift
Powershift gears	powershift	powershift	powershift
Reverser	powershift	powershift	powershift
Speeds in km/h	2,6-29	2,6-29	2,6-29
Hydr. flow l/min	118 l/min	118 l/min	118 l/min
Lift controls	elec.	elec.	elec.
Lift capacity	5669/9090 kg	5669/9090 kg	9090 kg
PTO speeds	1000	1000	1000
Brakes	wet disc	wet disc	wet disc
Steering	hydrost.	hydrost.	hydrost.
Turning circle m 4WD	13	13	13
Rear tyres 4WD	50.8×219	50.8×219	50.8×219
Weight 4WD	9977 kg	9977 kg	9977 kg
Height with cab	319 cm	319 cm	319 cm
Length (2WD/4WD)	596 cm	596 cm	596 cm
Wheelbase (2WD/4WD)	219 cm	219 cm	219 cm
Fuel tank	322 (473) l	473 l	473 l
Cab noise level	74 dB	74 dB	74 dB
Solid cab	x	x	x
Air suspension seat	x	x	x
Air conditioning	x	x	x
Creeper gear	opt.	opt.	opt.

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