Tractor · 1960Unverified
J.I. Case 641
J.I. Case 641 — 630 Series · 50 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
50 hp
Max power
32.3 kW
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.