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Euclid R85B

Series: Euclid Rock Truck

Source: https://www.lectura-specs.com/en/model/construction-machiner

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The R85B from Euclid is part of the Euclid Rock Truck series. The engine delivers 937.8 hp (645 kW), has 12 cylinders. Torque is 4,094.6 Nm. Rated speed is 2,100 rpm. The machine is 5,110 mm high. The wheelbase measures 4,623.8 mm. Ground clearance is 609.6 mm. Top speed is 54.1 km/h. The tank holds 1,003.1 litres. Maximum torque is reached at 1,300 rpm. The hydraulic tank holds 393.7 litres. The cooling system holds 268.8 litres. The oil fill is 140.1 litres. The electrical system runs on 24 V. The engine fitted is the KT38-C. Tyre size: 24,00-49(48)E-3. The Euclid Rock Truck series covers 4 models. Rated output within it ranges from 406.6 to 937.8 hp; the R85B sits at the top of that range with 937.8 hp. Its immediate neighbours are the R60 below it with 709.8 hp. 5 Euclid models across 2 series are on record. The model is listed under Mining equipment. 22 verified figures from 1 source are on file.

Euclid Rock Truck: the collective page of the mining haul trucks R32 to R85B from American manufacturer Euclid, later part of Hitachi, 299 to 645 kW, Detroit Diesel and Cummins engines, widths up to 5.43 m

Euclid was founded in the United States and later became part of Hitachi's construction machinery arm. The numbers in the R-range of haul trucks give an approximate payload class in tons, from the R32 through the R50 and R60 to the R85B. The models are powered among others by the two-stroke Detroit Diesel 16V-71N and by the Cummins engines KTTA19-C and KT38-C.

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The register lists here 4 versions with 299 to 645 kW, from 12,000.2 to 37,690.2 cm³ and 6 to 16 cylinders, lengths of 8,037.6 to 10,262.6 mm, widths of 3,602.7 to 5,434.6 mm, heights of 3,540 to 5,110 mm, torque of 1,599.9 to 4,094.6 Nm and a rated speed of 2,100 rpm.

Haul trucks of this size move overburden and ore over short hauls between the dig face and processing in open-pit and mining operations; the span from the R32 to the R85B covers several classes, from a mid-size to a very large truck, with correspondingly wide differences in engine size and dimensions.

Buying used, check the dump body and hoist cylinder for cracks, the axles and brakes given the considerable unladen and payload weight, hours on the Detroit Diesel and Cummins units, and tyre condition. On these older ranges the frame for distortion and the cab are worth a close look too; parts are supplied through dealers specialising in mining equipment. Given the size of the investment, an inspection by a specialist mechanic before purchase is advisable.

Sources: Kennwerte der Modelle Euclid Rock Truck

Technical data

Engine

Engine model	KT38-Ccorrect
Power	937.8 hp (645 kW)correct
Rated speed	2,100 rpmcorrect
Torque	4,094.6correct
Speed at max. torque	1,300 rpmcorrect
Cylinders	12correct
Displacement	37,690.2 cm³correct
Aspiration	turbochargedcorrect
Coolant capacity	268.8 lcorrect
Engine oil capacity	140.1 lcorrect

Dimensions and weights

Length	10,262.6correct
Width	5,434.6correct
Height	5,110 mmcorrect
Wheelbase	4,623.8correct
Ground clearance	609.6correct

Drivetrain and chassis

Gearbox type	Allison DP-8963 Planetarycorrect
Tyre size	24.00-49(48)E-3correct
Top speed	54.1 km/hcorrect

Working data

Hydraulic oil capacity	393.7 lcorrect
Fuel tank capacity	1,003.1 lcorrect

Other data

System voltage	24 Vcorrect

Frequently asked questions

How much power does the Euclid R85B have?

The Euclid R85B delivers 938 hp.

What engine does the Euclid R85B have?

12 cylinders, 37,690 cm³ displacement.

How fast does the Euclid R85B go?

Top speed is 54.1 km/h.

What are the dimensions of the Euclid R85B?

10,263 mm × 5,435 mm × 5,110 mm.

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.
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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