Zetor Proxima 7421

The Zetor Proxima 7421 is a tractor produced by Zetor. It is equipped with a 254 ci 4.2 L engine. The listed engine power is Diesel (listed): 75 hp / 55.9 kW. Transmission: 12 forward and reverse. Operating weight: 7310 lbs 3315 kg.

Engine Power

Diesel (listed): 75 hp / 55.9 kW

Fuel & Capacities

20 gal 75.7 L

Transmission

12 forward and reverse

Operating Weight

7310 lbs 3315 kg

Overview

	2004 - 2007 Proxima Series

Production
Manufacturer	Zetor
Built in Brno, Czechoslovakia

Variants
7421	2WD
7441	4WD

Zetor 7421 Engine
Zetor 4.2L 4-cyl diesel
ROPS Fuel tank	20 gal 75.7 L
Cab Fuel tank	32 gal 121.1 L
Engine details ...

Zetor 7421 Power
Engine	75 hp 55.9 kW
PTO (claimed)	70 hp 52.2 kW

Mechanical
Two-wheel drive
Two-post folding ROPS. Cab optional with air-conditioning.

Hydraulics
Type	open center
Pressure	2900 psi 200.0 bar
Valves	3
Pump flow	14 gpm 53.0 lpm
Total flow	18 gpm 68.1 lpm

Tractor hitch
Rear Type	II/I
Control	position and draft control
Rear lift	6830 lbs 3098 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000

Dimensions & Tires
Wheelbase	90 inches 228 cm
Weight	7310 lbs 3315 kg
Front tire	9.00-16
Rear tire	16.9-30
Full dimensions and tires ...

Engine

Engine Detail — 254 ci / 4.2 L Diesel

Manufacturer	Zetor
Configuration	turbocharged diesel, 4-cylinder, liquid-cooled
Displacement	254 ci 4.2 L
Power	75 hp 55.9 kW
Rated RPM	2200
Starter volts	12

Transmission

Transmission options
10-speed syncromesh
12-speed mechanical shuttle

Transmission — 10 forward and 2 reverse syncromesh

Type	syncromesh
Gears	10 forward and 2 reverse
Clutch	304.8mm hydraulic cerametallic disc
With 16.9-34 rear tires.

Transmission — 12 forward and reverse mechanical shuttle

Type	mechanical shuttle
Gears	12 forward and reverse
Clutch	304.8mm hydraulic cerametallic disc
With 16.9-34 rear tires. Reverse speeds are 10% faster than forward.

Dimensions

Zetor 7421 Tires
Ag front	9.00-16
Ag rear	16.9-30

Dimensions
Wheelbase	90 inches 228 cm
Length	152 inches 386 cm
Width	73 inches 185 cm
Height (ROPS)	103 inches 261 cm
Height (cab)	102 inches 259 cm
Weight	7310 lbs 3315 kg
Ground clearance	22 inches 55 cm
Front tread	56 to 71 inches 142 to 180 cm
Rear tread	56 to 71 inches 142 to 180 cm

Attachments

Attachment overview
Zetor 102H loader
Zetor 102SLX loader
Zetor 112SLX loader

Recommended Implements & Sizing Guide

Engineering recommendations for Zetor Proxima 7421 based on its 75 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	3 to 4 Bottom (16")3 - 4 铧 (40 cm)	Heavy Duty	Suitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing	7 to 8 ft (84-96 in)2.1 - 2.4 m	Heavy Duty	Heavy-duty twin spindle cutter for overgrown acreage.
Rotary TillerSeedbed Prep	78 to 84 in200 - 215 cm	Heavy Duty	Heavy commercial tiller with multi-speed gearbox.
Disc HarrowSecondary Tillage	10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙	Heavy Duty	Aggressive residue cutting in corn/cotton stubble.
Hay BalerHay & Forage	4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机	Heavy Duty	Silage and dry hay; 540 RPM PTO with slip-clutch.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Zetor Proxima 7421.

Estimated Continuous Field Runtime: 5.1 hrs

Approximately 5.1 hours of continuous field operation at ~75% rated power on a full tank (20 gal / 75.7 L).

Estimated 75% Load Fuel Burn~3.9 gal/hr (14.8 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours