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Oliver OC-4 Alfta Track

Oliver OC-4 Alfta Track tractor
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The Oliver OC-4 Alfta Track is an industrial crawler tractor produced from 1957 to 1965 by Oliver, a part of White. It features a Hercules 2.1L 3-cylinder engine available in diesel or gasoline versions, delivering around 30 hp. The tractor has a crawler drive with an open operator station and offers 4-speed gear and 8-speed creeper transmission options. It includes a rear PTO type 540 (1.375). Dimensions include a length of 106 inches, width of 69 inches with 15-inch grousers, and height of 73 inches. Operating weight ranges from 5225 to 5360 pounds depending on engine and track size. The tractor uses 15 or 19-inch tracks with significant ground contact area for traction. Additional features include a belt pulley with 8.5 inch diameter and 6.5 inch width running at 1096 RPM.
Oliver OC-4 Alfta Trackindustrial crawler tractorHercules engine30 hp tractorcrawler tractor specsOliver tractor data
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ModelOC-4 Alfta Track

Technical Specifications

Detailed specifications and technical data for Oliver OC-4 Alfta Track

Power

Engine power:30.45 hp (22.7 kW)

Engine

Options:Hercules 2.1L 3-cyl diesel, Hercules 2.1L 3-cyl gasoline
Hercules diesel:3-cylinder, liquid-cooled, Displacement 130 ci (2.1 L), Bore/Stroke 3.50x4.50 inches (89 x 114 mm), Power 30.45 hp (22.7 kW), Air cleaner oil bath, Compression 14.5:1, Rated RPM 1700, Starter type electric
Hercules gasoline:3-cylinder, liquid-cooled, Displacement 130 ci (2.1 L), Bore/Stroke 3.50x4.50 inches (89 x 114 mm), Power 30.20 hp (22.5 kW), Air cleaner oil bath, Compression 6.5:1, Rated RPM 1700, Starter type electric

Tracks

Width:15 inches (38 cm), 19 inches (48 cm)
Area on ground:2160 in² (1.4 m²), 2736 in² (1.8 m²)
Length on ground:72 inches (182 cm)

Variants

OC-4:crawler
Alfta:flex-track
OC-46:loader-crawler

Dimensions

Gauge:54 inches (137 cm)
Width:69 inches (175 cm) *Width with 15-inch grousers.
Height:73 inches (185 cm)
Length:106 inches (269 cm)
Operating weight:5225 lbs (gas 15") (2370 kg), 5360 lbs (diesel 19") (2431 kg)
Clearance (drawbar):15.25 inches (38 cm)

Mechanical

Drive:crawler
Operator station:Open operator station.

Production

Type:Industrial Crawler tractor
Manufacturer:Oliver (a part of White)
Years produced:1957 - 1965

References

Model OC-4 Alfta Track Tractor published in 1963, by Oliver:-
OC-4 Crawler - OC-46 Loader Series B published in 1963, by Oliver:-

Belt Pulley

RPM:1096
Speed:2437 ft/min (742.80 meters/min)
Width:6.5 inches (16 cm)
Diameter:8.5 inches (21 cm)

Transmission

Options:4-speed gear, 8-speed creeper
Gear transmission:Type gear, Gears 4 forward and 1 reverse, Clutch 215.9mm dry discs
Creeper transmission:Type creeper, Gears 8 forward and 2 reverse, Clutch 215.9mm dry discs

Power Take-off (PTO)

Rear PTO Type:540 (1.375)