Compare/UTB/Universal 640 vs UTB/Universal 643

UTB/Universal 640 vs UTB/Universal 643

Verdict: UTB/Universal 640 vs UTB/Universal 643

The UTB/Universal 640 and the UTB/Universal 643 are both tractors — here is how they stack up on the figures that matter. UTB/Universal 640 leads on rated power with 62 hp against 58 hp. UTB/Universal 640 is the lighter machine (4,400 kg vs 6,192 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. UTB/Universal 643 holds more fuel (62.1 L vs 53.7 L) for longer stints between fills. UTB/Universal 643 is the newer design (1988 vs 1983). In short: choose the UTB/Universal 640 for outright pulling power, or the UTB/Universal 643 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

UTB/Universal

Fit score

Best match

Clear

UTB/Universal

Fit score

Best match

Clear

Rated power

62 hp

58 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

UTB/UniversalReference

With 14.9x28 rear tires. Reverse speeds are 15% faster than forward.Reference

Optional creeper adds a third range to the basic transmission.Reference

Original price

$20,000 (1985)Reference

$25,000 (2004)Reference

Differential lock

mechanical rearReference

Steering

hydrostatic powerReference

—

Variants

U-640

2WDReference

—

U-640DTC

4WDReference

—

U-640SD

2WD shuttleReference

—

U-640DTC-SD

4WD shuttleReference

—

U-640DTCE

4WD equal-size wheelsReference

—

U-640L

high-clearanceReference

—

S640

crawlerReference

—

643DT

—

4WDReference

Engine

Fuel tank

53.7 LReference

62.1 LReference

Engine

48.5 kWReference

47.7 kWReference

Displacement

3.6 LReference

3.2 LReference

Bore/Stroke

102 x 110 mmReference

Power

48.5 kWReference

47.7 kWReference

Fuel system

direct injectionReference

Compression

17:1Reference

Rated RPM

2400Reference

Torque

221.0 NmReference

206.1 NmReference

Torque RPM

1400Reference

Starter volts

12Reference

Starter power

3.0 kWReference

3.5 kWReference

Air cleaner

—

oil bathReference

Oil capacity

—

23.0 LReference

Coolant capacity

—

14.0 LReference

Transmission

Gears

8 forward and reverseReference

Clutch

dry discReference

PTO & Hydraulics

PTO (claimed)

46.2 kWReference

43.3 kWReference

Type

shuttleReference

Valves

1Reference

Pump flow

40.9 lpmReference

34.1 lpmReference

Rear Type

II/IReference

IIReference

Control

position and draft controlReference

Rear lift

2100 kgReference

Rear PTO

liveReference

independentReference

Rear PTO Type

540Reference

540/1000Reference

Pressure

—

150.0 barReference

Engine RPM

—

1000@2400Reference

Dimensions

2WD Wheelbase

209 cmReference

—

4WD Wheelbase

198 cmReference

—

Weight

4400 to 5100 poundsReference

6192 to 6889 poundsReference

Front tire

6.00x16Reference

6.00-16Reference

Rear tire

14.9x28 (2WD)Reference

—

Standard tires (ag)

Front: 6.00x16. Rear: 9.50x36 (640L)Reference

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Optional tires (ag)

Front: 7.50x16. Rear: 11.2x38 (640L)Reference

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2WD Weight

1995 kgReference

2808 kgReference

4WD Weight

2313 kgReference

3124 kgReference

Wheelbase

—

227 cmReference

2WD Rear tire

—

14.9R-28Reference

2WD Standard tires (ag)

—

Front: 6.00-16. Rear: 14.9R-28Reference

4WD Standard tires (ag)

—

Front: 9.5/8-24. Rear: 12.4R-36Reference

Length

—

378 cmReference

Height

—

255 cmReference

2WD Front tread

—

139 to 199 cmReference

4WD Front tread

—

137 to 157 cmReference

Rear tread

—

140 to 191 cmReference

UTB/Universal 640 attachments

Electrical

Ground

negativeReference

Charging system

alternatorReference

Battery volts

12Reference

Battery AH

—

150Reference

Speeds

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.