Agricultural tractorsSpec sheet
UTB/Universal S640
The UTB/Universal S640 is a versatile tractor designed for various farming tasks. It features a liquid-cooled diesel engine with 4 cylinders and direct injection. The engine produces 65 hp at 2400 rpm, making it suitable for medium-sized farms. With a length of 124 inches and a weight of 6700 lb, this tractor is compact yet sturdy. The S640 comes with a constant mesh transmission, offering 6 forward gears and 2 reverse gears. It has a three-point hitch at the rear, compatible with both category II and I implements. The tractor's PTO operates at 540 rpm, allowing it to power various attachments. The open center hydraulic system and open operator station make it easy to use and maintain. Additional features include a 60.2-inch wheelbase and an electric starter with a 4 hp motor running on 12 volts.
ManufacturerUTB/UniversalPower65 hp(48.5 kW)Class60–100 HP tractors →Engine4-cylinderTransmissionConstant mesh
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Key specifications
- Category
- Agricultural
- Engine power
- 65hp
- Operating weight
- 6,700 lb
- Transmission
- Constant mesh
Category comparison
S640 compared with its category
vs. Agricultural medianDistribution
Engine Power (hp)
All recorded Agricultural tractors
65 hp · 16th
This model
13
Median 110 hp
282
This modelAgricultural tractorsMediann = 1,028
The S640 ranks at the 16th percentile for engine power among recorded agricultural tractors.
Overview
About the UTB/Universal S640
The UTB/Universal S640 is a versatile tractor designed for various farming tasks. It features a liquid-cooled diesel engine with 4 cylinders and direct injection. The engine produces 65 hp at 2400 rpm, making it suitable for medium-sized farms. With a length of 124 inches and a weight of 6700 lb, this tractor is compact yet sturdy. The S640 comes with a constant mesh transmission, offering 6 forward gears and 2 reverse gears. It has a three-point hitch at the rear, compatible with both category II and I implements. The tractor's PTO operates at 540 rpm, allowing it to power various attachments. The open center hydraulic system and open operator station make it easy to use and maintain. Additional features include a 60.2-inch wheelbase and an electric starter with a 4 hp motor running on 12 volts.
Full specifications
Recorded specifications
General
| Manufacturer | UTB/Universal |
|---|---|
| Model | S640 |
| Category | Agricultural tractor |
| Operating weight | 6,700lb(3,039 kg) |
Engine
| Make | UTB/Universal |
|---|---|
| Power | 65hp(48.47 kW) |
| Cylinders | 4 |
| Displacement | 219.4ci(3.6 L) |
| Bore | 4.02in(102.1 mm) |
| Stroke | 4.33in(110 mm) |
Transmission
| Type | Constant mesh |
|---|---|
| Forward gears | 6 |
| Reverse gears | 2 |
Chassis & drive
| Cab | Open |
|---|
Hydraulics
| Type | Open center |
|---|
Power take-off
| PTO speed | 540rpm |
|---|
Dimensions
| Length | 124in(3,150 mm) |
|---|---|
| Operating weight | 6,700lb(3,039 kg) |
Closest alternatives
S640 compared with the nearest models by horsepower
The closest agricultural models to the UTB/Universal S640 by rated horsepower are the UTB/Universal U-650M and the Belarus 6311. The UTB/Universal U-650M matches it on rated power and weighs 750 lb more, so it carries more weight per horsepower, which helps traction in draft work. The Belarus 6311 matches it on rated power and weighs 1,400 lb more, at 125 lb per horsepower against 103 lb. Of the 3 models, the S640 has the lowest weight per horsepower at 103 lb per hp.
| Spec | UTB/Universal S640 | UTB/Universal U-650M | Belarus 6311 |
|---|---|---|---|
| Engine power | 65 hp48.5 kW | 65 hp48.5 kW | 65 hp48.5 kW |
| Operating weight | 6,700 lb3,039 kg | 7,452 lb3,380 kg | 8,100 lb3,674 kg |
| Weight per hp | 103 lb/hp63 kg/kW | 115 lb/hp70 kg/kW | 125 lb/hp76 kg/kW |
| Displacement | 219.4 ci3.6 L | 290.5 ci4.76 L | 289 ci4.74 L |
| Cylinders | 4 | 4 | 4 |
| Transmission | Constant mesh | Manual | - |
Calculators
Calculators for the S640
PTO power
About 54 to 59 PTO hp
Estimated from the 65 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 65 hp tractor can run
Maximum size is about a 7.5 ft rotary cutter or a 6.5 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
120 lb per PTO hp as listed
Heavy draft work calls for 120 to 135 lb/hp. The calculator gives the ballast to add.
Units
65 hp is 48.5 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Category medians
S640 vs. Agricultural median
UTB/Universal S640 compared with other Agricultural tractors
| Spec | This model | Agricultural median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 65 hp | 110 hp | -41% | 16th |
| Engine Displacement | 219 ci | 336 ci | -35% | 19th |
| Cylinders | 4 | 5.5 | -27% | 31st |
| Forward Gears | 6 | 16 | -62% | 11th |
| Operating Weight | 6,700 lb | 10,914 lb | -39% | 23rd |
| Length | 124 in | 173 in | -28% | 8th |
Medians and percentiles are calculated from the agricultural tractors in the database that have a recorded value for each specification (sample size 829–1,130 models).
Same manufacturer
Other UTB/Universal models
Other manufacturers
Models with similar horsepower
FAQ
Frequently asked questions
What is the engine power output of the UTB/Universal S640?
Rated engine output for the UTB/Universal S640 is 65 hp, delivered by a 4-cylinder engine. The engine displaces 219.4 ci.
Which transmission does the UTB/Universal S640 use?
The UTB/Universal S640 is equipped with a Constant mesh transmission with 6 forward gears.
What type of hydraulic system does the UTB/Universal S640 use?
Hydraulics on the UTB/Universal S640 are Open center.
What hitch category is the UTB/Universal S640?
The UTB/Universal S640 uses a Category II/I hitch.
What is the operating weight of the UTB/Universal S640?
The UTB/Universal S640 has an operating weight of about 6,700 lb.
How do I maintain a UTB/Universal S640?
Routine service for the UTB/Universal S640 covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.