Industrial Tractor · 1957Unverified
Oliver OC-4 Alfta Track
Oliver OC-4 Alfta Track — Industrial Crawler tractor · 30 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
30 hp
Weight
5225 to 5360 pounds
Hover a source tag to verify
Overview
ManufacturerOliver (a part of White)Reference
Industrial Crawler tractorReference
DrivecrawlerReference
Open operator station.Reference
Variants
OC-4crawlerReference
OC-46loader-crawlerReference
Alftaflex-trackReference
Engine
Hercules 2.1L 3-cyl dieselReference
Hercules 2.1L 3-cyl gasolineReference
Engine22.7 kWReference
HerculesReference
dieselReference
3-cylinderReference
liquid-cooledReference
Displacement2.1 LReference
Bore/Stroke89 x 114 mmReference
Power22.7 kWReference
Air cleaneroil bathReference
Compression14.5:1Reference
Rated RPM1700Reference
Starter typeelectricReference
gasolineReference
Power22.5 kWReference
Compression6.5:1Reference
Transmission
4-speed gearReference
8-speed creeperReference
TypegearReference
Gears4 forward and 1 reverseReference
Clutch215.9mm dry discsReference
TypecreeperReference
Gears8 forward and 2 reverseReference
PTO & Hydraulics
Rear PTO Type540 (1.375)Reference
Dimensions
Weight5225 to 5360 poundsReference
15-inch tracksReference
Length269 cmReference
Width175 cmReference
Height185 cmReference
Operating weight2370 kgReference
Operating weight2431 kgReference
Clearance (drawbar)38 cmReference
Gauge137 cmReference
Capacities
Diameter21 cmReference
Width16 cmReference
RPM1096Reference
Speed742.80 meters/minReference
Oliver OC-4 Alfta Track Tracks
Width38 cmReference
Length on ground182 cmReference
Area on ground1.4 m²Reference
Width48 cmReference
Area on ground1.8 m²Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.