John Deere 3120 (A) Transmission specs

The fastest speed on record for a 3120 (A) is 15.5 mph (25 km/h). The gearbox itself is not on record yet.

11 transmission values on record for the 3120 (A).

Engine power, claimed · gross or net not stated

79.9 hp

59.6 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “John Deere 3120”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

How fast will a 3120 (A) go?

The fastest speed on record for a 3120 (A) is 15.5 mph (25 km/h). The gearbox itself is not on record yet.

Transmission — 3120 (A) Transmission
Drive	Available in two-wheel and four-wheel drive
Forward gears	12
Reverse gears	6
Transmission as described	12 forward/6 reverse
Clutch	Pedal operated dry Fichtel & Sachs single disc clutch
Top speed forward	15.5 mph · 25 km/h
Top speed reverse	5.2 mph · 8.33 km/hhighest reverse speed printed in the article's speed tables
Service brakes	Pedal operated hydraulic wet disc brake acting on differential layshaft
Steering	Hydraulic power steering
Differential lock	Lever and pedal operated load-shiftable differential lock
Front axle	Oscillating telescopic front axle without suspension

Source · Traktorenlexikon, “John Deere 3120”

11 transmission values from Traktorenlexikon, “John Deere 3120”.

Sources checked

14 SEP 2026

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

Traktorenlexikon: John Deere 3120 — CC BY-SA 4.0, WIKIBOOKS-TL-49588 · revision 1018499. Wikibooks contributors (Traktorenlexikon). Original document