Production years
1986-1992
Case IH combine ยท 1986-1992
Case IH 1640 Combine
The Case IH 1640 is an early 1600 Series Axial-Flow combine and a classic mid-size single-rotor machine. It brought the gentle, simple rotary-harvesting concept to farms needing a smaller alternative to the 1660 and 1680.
Threshing system
Axial-Flow single-rotor rotary system
Engine
International Harvester D-466 466 cu in six-cylinder diesel, 150 hp
Grain tank capacity
145 bu
Case IH 1640 specifications
| Production years | 1986-1992 |
|---|---|
| Threshing system | Axial-Flow single-rotor rotary system |
| Engine | International Harvester D-466 466 cu in six-cylinder diesel, 150 hp |
| Grain tank capacity | 145 bu |
| Header compatibility | Case IH grain platforms and corn heads; commonly 13-20 ft platforms and 4- or 6-row corn heads |
| Weight | Approx. 19,000-20,000 lb without header, configuration dependent |
| Rotor | Single longitudinal Axial-Flow rotor |
| Defining feature | 1600 Series rotary combine with 145-bushel tank |
What the 1640 is used for
The 1640 was intended for corn, soybeans, wheat, and small grains on small-to-medium farms that wanted the crop adaptability and grain-quality benefits of an Axial-Flow rotary combine. Its 150 hp engine and 145-bushel tank put it below the larger 1660 in the same family.
Today, it is used primarily on smaller acreages and by owners who value a repairable, older rotary machine. It can be effective in many crops, but its capacity and header size should be matched realistically to acreage, yields, and hauling support.
Why the Case IH 1640 stands out
The 1640 is notable as an accessible early Case IH Axial-Flow model with the same basic single-rotor concept that made the line famous. Its simple mechanical architecture and long production run make it a familiar machine, though age and maintenance history now matter far more than model reputation.
Buying a used Case IH 1640
Examine the rotor, concaves, cage, transition cone, feederhouse chain and floor, clean-grain and return elevators, unloading auger, hydraulic system, final drives, and all drive belts. Check for worn rotor components, thin sheet metal, bearing noise, and inaccurate hour records, then verify model year and options from the serial number with TractorData.com and manufacturer records.
Case IH 1640 frequently asked questions
How much horsepower does a Case IH 1640 have?
The 1640 is commonly cited with a 150 hp International Harvester D-466 diesel engine.
How large is the grain tank on a Case IH 1640?
The commonly cited grain tank capacity is 145 bushels.
Is a Case IH 1640 a good small-farm combine?
A well-maintained 1640 can be a capable small-farm rotary combine, provided its condition, parts support, and capacity fit the operation.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used combines vary by condition, hours, and region. Page updated Aug 4, 2026.