Technical register for agricultural, construction and commercial machinery · sourced data
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Caterpillar Challenger 55 4WD – specifications

Series: Challenger

Build year not documented · Data origin: Directory data · sources

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The Caterpillar Challenger 55 is a tractor from the Caterpillar 4WD Tractor series. Fitted is a six-cylinder engine displacing 7.2 litres. Rated speed is 1,000 rpm. At 29 km/h, that is as fast as it goes. Empty, it weighs 10,320 kg.

Caterpillar Challenger – tracked tractors from Peoria: the range from 1987 to the 2002 handover to AGCO, outputs from 138 to 236 kW and engines from the 3126 and C-9 families

Caterpillar developed the Challenger range at its Peoria, Illinois plant as the first series-produced farm tractor with rubber-track running gear. Production began in 1987 and was handed over to AGCO in 2002, which has continued the Challenger brand for large tractors ever since. The register groups both the classic tracked models and later versions of the range under this slug.

Read on 3 more paragraphs

The register lists 7 versions with 138 to 236 kW rated output at 1,000 to 2,100 rpm. The six-cylinder engines come from the Caterpillar range with the type designations 3126 and C-9 and produce between 7,200 and 10,466 cm³ displacement. Operating weights range from 9,977 to 15,000 kg, lengths from 5,360 to 6,000 mm.

With its track running gear, the Challenger occupied its own market niche between classic wheeled tractors and bulldozers: the large footprint lowers ground pressure and allows fieldwork even on wet soils where wheeled tractors would sink in. Competition came chiefly from John Deere with its own tracked-tractor range.

When buying used, the wear condition of the track belt, rollers and drive wheels ranks among the most expensive checks, along with the tightness of the tensioning gear. On engines from the 3126 and C-9 families, it is worth checking the injection pump, turbocharger and cooling system; spare parts run through either the Caterpillar or the AGCO network depending on the build year.

Sources: SpecCodex register, model data: Caterpillar Challenger

Versions of this model in the register

Each row is a separate entry with its own data. The figures on this page belong to the row marked ●.

VersionBuiltkWEU type approvalOrigin
CHALLENGER 55 1998-1999198.5—Official register
● Challenger 55 ———Directory data

Technical data

Engine

Engine model3,126correct
Rated speed1,000 rpmcorrect
Cylinders6correct
Displacement7,200.5 cm³correct
Coolant capacity32.9 lcorrect
Engine oil capacity33.3 lcorrect

Dimensions and weights

Length5,360 mmcorrect
Ground clearance498.1 mmcorrect
Unladen weight10,320 kgcorrect

Drivetrain and chassis

Gearbox typepowershift transmissioncorrect
Forward gears16correct
Reverse gears11correct
Top speed28.6 km/hcorrect
Turning radius2,350 mmcorrect

Working data

Lifting capacity5,669 kgcorrect
Pump flow118.1 l/mincorrect
Hydraulic oil capacity121.1 lcorrect
Hydraulic pressure189.5 barcorrect
Fuel tank capacity473.2 lcorrect

Other data

Cab height3,188.2 mmcorrect
PTO output241 hpcorrect
System voltage12 Vcorrect

Frequently asked questions

How much does the Caterpillar Challenger 55 weigh?

The unladen weight is 10,320 kg.

What engine does the Caterpillar Challenger 55 have?

6 cylinders, 7,200 cm³ displacement.

How fast does the Caterpillar Challenger 55 go?

Top speed is 28.6 km/h.

What is the PTO output of the Caterpillar Challenger 55?

PTO output is 241 hp.

How much does the rear linkage of the Caterpillar Challenger 55 lift?

The rear linkage lifts 5,669 kg.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Check the weights in the papers against the figures here — attachments change them.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 22 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.​‍​⁠‍‍‍‍‍​‌⁠‌‌⁠​‍⁠​⁠

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Other models in this series

Sources: RitchieSpecs equipment specifications (retrieved August 2026) · Data sources and cross-checks

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