Tractor · 1955Unverified
Oliver OC-12
Oliver OC-12 — Agricultural Crawler tractor · 63 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
63 hp
Max power
37.9 kW
Weight
4955 kg
Hover a source tag to verify
Overview
ManufacturerOliverReference
Agricultural Crawler tractorReference
Built in Cleveland, Ohio, USAReference
DrivecrawlerReference
Open operator station.Reference
Variants
OC-12crawlerReference
OC-126crawler-loaderReference
Engine
Hercules 5.6L 6-cyl gasolineReference
Hercules 4.9L 6-cyl dieselReference
Fuel tank132.5 LReference
Engine47.0 kWReference
Drawbar (claimed)39.5 kWReference
Belt (claimed)44.0 kWReference
Drawbar (tested)37.9 kWReference
Belt (tested)43.2 kWReference
Hercules JXLDReference
gasolineReference
6-cylinderReference
liquid-cooled vertical L-headReference
vertical L-headReference
Displacement5.6 LReference
Bore/Stroke102 x 114 mmReference
Power47.0 kWReference
Compression6.25:1Reference
Rated RPM1750Reference
Starter volts6Reference
Coolant capacity22.7 LReference
Hercules DJXCReference
dieselReference
liquid-cooled vertical I-headReference
Displacement4.9 LReference
Bore/Stroke95 x 114 mmReference
Power45.9 kWReference
Compression15.5:1Reference
Starter volts12Reference
Oil capacity11.4 LReference
Coolant capacity18.9 LReference
Belt power (max)43.2 kWReference
Max power37.9 kWReference
Belt power (max)42.2 kWReference
Max power37.7 kWReference
Transmission
4-speed gearReference
TypegearReference
Gears4 forward and 2 reverseReference
Oil capacity30.3 LReference
Dimensions
Weight4955 kgReference
14-inch tracksReference
Length278 cmReference
Width147 cmReference
Width193 cmReference
Height168 cmReference
Weight4955 kgReference
Ground clearance35 cmReference
Gauge111 cmReference
Gauge152 cmReference
Oliver OC-12 attachments
bladeReference
Oliver OC-12 Tracks
4-roller width35 cmReference
4-roller length on ground172 cmReference
4-roller area on ground1.2 m²Reference
5-roller width35 cmReference
5-roller length on ground181 cmReference
5-roller area on ground1.3 m²Reference
Test results
NTTL 548: gasoline 4-speed crawlerReference
NTTL 549: diesel 4-speed crawlerReference
Gasoline 4-speed crawlerJune 15 - 28, 1955Link: Nebraska Tractor Test 548 fileReference
Belt fuel use (max)22.7 l/hourReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull4716 kgReference
Gear 1 used for pull test.Reference
Diesel 4-speed crawlerJune 15 - 28, 1955Link: Nebraska Tractor Test 549 fileReference
Belt fuel use (max)18.2 l/hourReference
Max pull5140 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.