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Tractor · 1950Unverified

Nuffield DM-4 Universal

Name: Nuffield DM-4 Universal
Brand: Nuffield

Nuffield DM-4 Universal — Model year 1950-19541954-1961 · 45 hp. Reference specifications; pending source verification.

The Nuffield DM-4 Universal is a compact tractor, with a rated power output of 45 hp. Produced from 1950 to 1961, this model features a 4-cylinder diesel liquid-cooled engine, paired with a 5-speed gearbox and two-wheel drive. The DM-4 Universal has a listed weight of 2522 kg and is suited to tasks covering approximately 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

45 hp

Max power

29.4 kW

Weight

2522 kg

Catalogue coverage

Variants represented

Richest spec table

70 rows

Recorded power

45 hp

Recorded weight

2522 kg

Transmissions

5-speed gear

Production years

1950-1961

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerNuffieldReference

Utility tractorReference

Built in Birmingham, EnglandReference

Two-wheel driveReference

Manual steeringReference

Independent mechanical contracting band brakesReference

Open operator station.Reference

Variants

PM4gasoline standardReference

DM4diesel standardReference

PM3Vgasoline tricycleReference

DM3Vdiesel tricycleReference

Engine

BMC 3.4L 4-cyl dieselReference

Fuel tank63.6 LReference

Engine33.6 kWReference

Drawbar (claimed)30.2 kWReference

Belt (claimed)31.8 kWReference

Drawbar (tested)29.4 kWReference

BMC OEA/2Reference

dieselReference

4-cylinderReference

liquid-cooled vertical I-headReference

Displacement3.4 LReference

Bore/Stroke95 x 120 mmReference

Power33.6 kWReference

Fuel systemdirect injectionReference

Air cleaneroil bathReference

Compression16.5:1Reference

Rated RPM2000Reference

Torque302.8 NmReference

Torque RPM1329Reference

Starter volts12Reference

Oil capacity8.5 LReference

Coolant capacity15.3 LReference

Power at rated engine speed33.8 kWReference

Max power29.4 kWReference

Transmission

5-speed gearReference

TypegearReference

Gears5 forward and 1 reverseReference

Clutch280mm dry discReference

PTO & Hydraulics

PTO (tested)33.8 kWReference

Rear TypeIReference

Rear PTO Type540 (1.375)Reference

Engine RPM528@1400Reference

Dimensions

Wheelbase198 cmReference

Weight2522 kgReference

Front tire6.00-16Reference

Rear tire11.00-36Reference

Ag front6.00-16Reference

Ag rear11.00-36Reference

Ag front7.50-18Reference

Ag rear13.00-30Reference

Ag rear14.00-30Reference

Ag rear9.00-36Reference

Length309 cmReference

Height (hood)151 cmReference

Height (exhaust)204 cmReference

Operating weight2522 kgReference

Ballasted weight3686 kgReference

Ground clearance53 cmReference

Clearance (front axle)43 cmReference

Clearance (drawbar)54 cmReference

Front tread134 to 180 cmReference

Rear tread135 to 224 cmReference

Test results

Morris diesel 5-speed 2WDAugust 27 - September 5, 1955Link: Nebraska Tractor Test 558 fileReference

PTO performanceReference

Fuel use11.4 l/hourReference

Drawbar performanceReference

Gear 3 used for power test.Reference

Max pull2436 kgReference

Gear 1 used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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