Oliver OC-6

Last Updated: July 2024

Overview

The Oliver OC-6 is a crawler tractor known for its versatility and power. Based on independent test results, the engine power output is rated at 34.41 hp at 1650 rpm. It has a robust 6-cylinder engine available in both gasoline and diesel variants, with a maximum torque of 156 lb-ft at 1100 rpm. The tractor has a gear transmission with 6 forward and 2 reverse gears, giving it enough range to tackle different working conditions. It boasts considerable heft, with operating weights ranging from 5565 to 5855 pounds, depending on the gauge width and whether it's a gasoline or diesel version. The OC-6's significant ground clearance of 20 inches allows it to handle uneven and rough terrain, characteristic of a crawler type tractor. This model's history spans decades, with various engine options signifying its adaptability to the changing needs of agriculture.

Key Specifications

Power Output: 34.41

Transmission: Gear

Drive Type: Crawler

Operating Weight: 5565 to 5855

Fuel Type: Gasoline and Diesel

Technical Specifications

Engine

Manufacturer: Oliver-Waukesha
Model: -
Cooling Type: -
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Gasoline and Diesel
Induction Type: Naturally Aspirated
Cylinders: 6
Displacement (ci): 193.9 and 216.5
Bore (in): 3.3125 and 3.50
Stroke (in): 3.75
Rated RPM: 1600
Power Output (hp): 34.41

Transmission

Type: Gear
Forward Gears: 6
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): 121.5
Width (in): 56.25
Height (in): 56.5
Operating Weight (lb): 5565 to 5855

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: Tracked
Drive Type: Crawler
Steering Type: -
Coolant Capacity (qts): 17
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Tracks
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: -
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: January 1, 1954

Maximum Power and Fuel Consumption

Maximum Power: 34.41 HP (25.65 kW) at 1650 rpm
Fuel Consumption at Maximum Power: 3.397 Gal/hr (12.86 l/h) with a fuel efficiency of 0.542 lb/hp.hr (0.329 kg/kW.h)

Drawbar Performance

Power at Rated Engine Speed: 27.64 HP (20.61 kW) with a drawbar pull of 4263 lbs (18.97 kN) and a speed of 2.21 mph (3.56 km/h)
Fuel Consumption at Rated Speed: 0.585 lb/hp.hr (0.356 kg/kW.h) with a fuel efficiency of 11.86 Hp.hr/gal (2.34 kW.h/l)

Torque and Engine Performance

Maximum Torque: 156 lb.-ft. (212 Nm) at 1100 rpm
Torque Rise: N/A

Hydraulic Performance

Maximum Force Exerted: N/A at hitch points
Pump Delivery Rate: N/A

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (545 rpm): N/A
Fuel Consumption: 3.20 Gal/hr (12.11 l/h) at 1500 rpm

Nebraska Tractor Test Lab.(1954). Test 516: Oliver OC-6. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/519