Compare/Kubota KL3950 vs Kubota STW40

Kubota KL3950 vs Kubota STW40

Verdict: Kubota KL3950 vs Kubota STW40

The Kubota KL3950 and the Kubota STW40 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 39 hp. Kubota STW40 is the lighter machine (2,436 kg vs 3,362 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota KL3950 holds more fuel (40.1 L vs 29.5 L) for longer stints between fills. Kubota STW40 is the newer design (2015 vs 2010). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

Kubota

Fit score

Best match

Clear

Kubota

Fit score

Best match

Clear

Rated power

39 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

KubotaReference

Three range transmission. Twelve forward, eight reverse, in creeper and medium range. Six forward, four reverse, in high-speed range.Reference

liquid-cooledReference

Differential lock

—

mechanical rearReference

Engine

Fuel tank

40.1 LReference

29.5 LReference

Engine

28.7 kWReference

—

Displacement

2.2 LReference

1.8 LReference

Bore/Stroke

87 x 92 mmReference

86 x 102 mmReference

Power

28.7 kWReference

—

Rated RPM

2600Reference

2700Reference

Starter

electricReference

Starter volts

12Reference

Fuel Type

dieselReference

—

No of Cylinders

4 cylinderReference

—

Rated engine speed

2,600 RPMReference

—

Bore and stroke

3.43x3.64 inchesReference

—

Cooling system

liquid-cooledReference

—

Engine (gross)

—

28.7 kWReference

Engine (net)

—

27.3 kWReference

Rated Power (net)

—

27.3 kWReference

Rated Power (gross)

—

28.7 kWReference

Transmission

GlideshiftReference

—

Type

power shiftReference

hydrostaticReference

Gears

30 forward and 20 reverseReference

infinite forward and reverse (3-range)Reference

Clutch

dry discReference

—

Transmission Type

PowershiftReference

—

forward and reverse options

Glideshift : Powershift : 24 F and 16 R | 30 F and 20 RReference

—

Wheel Drive

4WDReference

—

PTO & Hydraulics

Rear Type

IReference

Rear PTO Type

540 (1.375)Reference

Engine RPM

-944@2600Reference

2500@2734Reference

PTO (claimed)

—

20.4 kWReference

Pressure

—

169.7 barReference

Pump flow

—

29.9 lpmReference

Control

—

position controlReference

Rear PTO

—

independentReference

Mid PTO

—

independentReference

Mid PTO Type

—

2500Reference

Dimensions

Wheelbase

188 cmReference

161 cmReference

Weight

3362 to 3781 poundsReference

2436 to 2756 poundsReference

Front tire

8-18Reference

6.00-12Reference

Rear tire

12.4-28Reference

9.5-22Reference

Standard tires (ag)

Front: 8-18. Rear: 12.4-28Reference

Front: 6.00-12. Rear: 9.5-22Reference

Length

344 cmReference

294 cmReference

Width

149 cmReference

118 cmReference

Height (ROPS)

231 cmReference

234 cmReference

Height (cab)

219 cmReference

216 cmReference

ROPS Weight

1525 kgReference

1104 kgReference

Cab Weight

1715 kgReference

1250 kgReference

Ground clearance

40 cmReference

23 cmReference

Front tread

119 cmReference

102 cmReference

Rear tread

114 to 143 cmReference

94 to 106 cmReference

Lawn/turf front

—

24x8.50-14Reference

Lawn/turf rear

—

13.6-16Reference

Electrical

Ground

negativeReference

Battery volts

12Reference

Charging system

—

alternatorReference

Cab Charging amps

—

60Reference

General

Make & Model

KubotaReference

—

Rollover protective structure

Two-post ROPSReference

—

Capacities

Capacity

134.1 ciReference

—

Power

Max Power

38.5 hpReference

—

PTO

Rear PTO Power

AvailableReference

—

Rear PTO RPM

540 RPMReference

—

Engine Speed on Rear PTO speed

1,258@2,600 RPMReference

—

Steering & brakes

Brakes

mechanical wet discReference

—

Steering type

powerReference

—

Hydraulics

Rear Hitch category (SAE designation)

Category IReference

—

Dimensions & weight

Height Over Cab

220 cmReference

—

Height Over ROPS

231.9 cmReference

—

Overall Length

344.4 cmReference

—

Overall Width

149.6 cmReference

—

Overall weight

1,525 kgReference

—

Wheels & tyres

Rear Wheel Type

12.4-28Reference

—

Rear wheel tread range

44.9 to 56.3 inchesReference

—

Front Wheel Type

45,522Reference

—

Front Wheel tread range

119.9 cmReference

—

Operator station

Cab Availability

AvailableReference

—

Kubota STW40 attachments

Attachment overview

60" Mower deck

Cutting width

—

152 cmReference

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.