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Tractor · 1960Unverified

J.I. Case 641

Name: J.I. Case 641
Brand: J.I. Case

J.I. Case 641 — 630 Series · 50 hp. Reference specifications; pending source verification.

The J.I. Case 641 is a tractor with a rated power output of 50 hp, positioning it at the lower end of its class in terms of power. Manufactured between 1960 and 1963, this model features a 4-cylinder diesel liquid-cooled engine, and it has two-wheel drive with an 8-speed gearbox. The J.I. Case 641 is suitable for operations on areas of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

50 hp

Max power

32.3 kW

Catalogue coverage

Variants represented

Richest spec table

94 rows

Recorded power

50 hp

Transmissions

8-speed torque converter

Production years

1960-1963

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerJ.I. CaseReference

Row-Crop tractorReference

FactoriesRock Island, Illinois, USAReference

FactoriesRacine, Wisconsin, USAReference

Two-wheel driveReference

Steeringpower assistReference

Differential mechanical dry disc brakesReference

Open operator station.Reference

Variants

630diesel standardReference

631diesel row-cropReference

640gas standardReference

641gas row-cropReference

Engine

J.I. Case 3.1L 4-cyl gasolineReference

J.I. Case 3.1L 4-cyl LP gasReference

Fuel tank83.3 LReference

Belt (claimed)38.8 kWReference

Drawbar (tested)32.3 kWReference

J.I. CaseReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement3.1 LReference

Bore/Stroke97 x 105 mmReference

Air cleaneroil bathReference

Compression7.34:1Reference

Rated RPM2000Reference

Rated RPM2250 (640C)Reference

Starter volts12Reference

LP gasReference

Rated RPM2250Reference

Power at rated engine speed37.1 kWReference

Max power32.3 kWReference

Power at rated engine speed37.7 kWReference

Max power31.3 kWReference

Transmission

8-speed torque converterReference

12-speedReference

8-speedReference

4-speed gearReference

TransmissionCase Case-o-maticReference

Typetorque converterReference

Gears8 forward and 2 reverseReference

Clutchhydraulic wet discReference

Tractors equipped with the Case-o-Matic were sometimes referred to as the 630C.Reference

TransmissionCase Tripl-RangeReference

Gears12 forward and 3 reverseReference

Clutchdry discReference

TransmissionCase Dual-RangeReference

Gears8 forward and reverseReference

TypegearReference

Gears4 forward and 1 reverseReference

PTO & Hydraulics

PTO (tested)37.7 kWReference

TypeDual-ControlReference

TypeCase Eagle HitchReference

Rear PTOcontinuousReference

Rear PTOindependent (Case-o-matic)Reference

Rear PTO Type540 (1.375)Reference

Rear PTO Type540/1000 (1.375)Reference

Power at rated PTO speed34.9 kWReference

Power at rated PTO speed37.1 kWReference

Dimensions

Front tire6.00x15Reference

Rear tire12.4x36Reference

Ag front6.00x15Reference

Ag front6.50x16Reference

Ag rear12.4x36Reference

Ag rear13.6x36Reference

Length341 cmReference

Length353 cmReference

Width205 cmReference

Height (hood)161 cmReference

Ground clearance63 cmReference

Front tread23/30/38 cmReference

Front tread137 to 198 cmReference

Front tread116 to 172 cmReference

Front tread111 to 152 cmReference

Rear tread132 to 223 cmReference

641 Serial Number Location

Serial number plate on the right side of the instrument panel.Reference

Capacities

Diameter23 cmReference

Width15 cmReference

Test results

NTTL 773: gasoline Case-o-Matic 2WDReference

NTTL 770: gasoline 12-speed 2WDReference

Gasoline Case-o-Matic 2WDOctober 11 - 22, 1960Link: Nebraska Tractor Test 773 fileReference

PTO performanceReference

Fuel use16.7 l/hourReference

Fuel use14.8 l/hourReference

Drawbar performanceReference

Gear 5 used for power test.Reference

Max pull3130 kgReference

Gear 1 used for pull test.Reference

Gasoline 12-speed 2WDOctober 13 - 27, 1960Link: Nebraska Tractor Test 770 fileReference

Fuel use15.9 l/hourReference

Fuel use15.5 l/hourReference

Fuel use15.1 l/hourReference

Gear 7 used for power test.Reference

Max pull3117 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.

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