Best Single-Row Disc Harrow Parts and Blades for Farm Tillage
The best choice for a single-row disc harrow depends on your axle size, blade diameter, and whether you need a replacement blade or bearing. These listings are individual parts, not complete harrows. The ALMULOO blade is suited to 1-inch or 1-1/8-inch square axles, while the Lasnten set is intended for 7/8-inch or 1-inch square axles. The remaining options cover smooth blades and a flange bearing; verify dimensions and fitment before ordering.
| Product | Best suited for | Key detail |
|---|---|---|
| ALMULOO 18-inch blade | Single-blade replacement | 1-inch or 1-1/8-inch square axle |
| Lasnten 18-inch set | Multiple notched blades | Four blades; 7/8-inch or 1-inch square axle |
| 16-inch smooth blade | Smooth-blade replacement | 16-inch diameter |
| 22-inch smooth blade | Larger smooth-blade replacement | 1-1/2-inch round; 7 gauge, 5 mm |
| ST208-1N bearing unit | Bearing replacement | 1-inch square |
ALMULOO 18-Inch Disc Blade
This single 18-inch blade is best for buyers replacing one blade on equipment with a 1-inch or 1-1/8-inch square axle. The listed functions include trench carving, ridge building, tilling, soil pulverizing, and smoothing planting surfaces. The product description also identifies shallow tillage and inter-row loosening in orchards and cash-crop fields as intended uses.
ALMULOO describes the blade as forged solid steel, 35 mm thick, with a powder-coated finish. It was selected for its stated axle options and range of field tasks. Caution: It is not compatible with a 7/8-inch square axle, and the listing is for one blade rather than a complete disc assembly.
Lasnten Four-Piece 18-Inch Notched Blades
Choose this set if you need four notched blades and your axle is 7/8 inch or 1 inch square. Each blade is listed as approximately 18 by 18 by 2 inches and 3.5 mm thick. The notched design and multi-piece quantity make this option better for buyers replacing several blades or keeping matching spares.
The listing describes the blades as metal and suitable for leveling, raising, plowing, and turning. It was selected for its included quantity and stated axle fitment. Caution: The product information does not specify compatibility with a 1-1/8-inch axle, so do not assume it fits that size.
16-Inch Smooth Disc Harrow Blade
This smooth, or plain, 16-inch blade is best for a buyer seeking a smaller smooth-blade replacement. The supplied description identifies it as a disc harrow blade for International equipment, but provides no axle dimensions, thickness, or additional specifications. It was included because some single-row setups require a smooth blade rather than a notched one.
Caution: Confirm the exact equipment fit and mounting dimensions before ordering. The available product details are brief and do not establish compatibility with every single-row harrow.
22-Inch Smooth Disc Harrow Blade
This smooth blade is best for a buyer whose equipment calls for a 22-inch blade with a 1-1/2-inch round mounting opening. The title lists 7-gauge construction and a thickness of 5 mm. Those dimensions distinguish it from the 16-inch blade and square-axle options above.
It was selected as a larger-diameter replacement choice with specific mounting details in the product name. Caution: Its round opening is not the same as a square axle fitment. Check your existing blade and hub dimensions carefully.
ST208-1N Square Flange Bearing
This bearing unit is best for a buyer replacing a flange bearing on a setup specified for a 1-inch square axle. Its product name lists farming applications and replacement references FD208R1, FD208R, DHU1-208, ST208-1, and FD208-1SQ. It was selected because bearing condition is a separate maintenance consideration from blade selection.
Caution: This is a bearing unit, not a disc blade or complete harrow. Confirm the existing bearing designation and shaft dimensions before choosing it.
Buying Guide: How To Choose Single-Row Disc Harrow Parts
Which axle size and shape do I need?
Start by measuring the axle or checking the equipment manual. A 7/8-inch, 1-inch, or 1-1/8-inch square axle is not interchangeable simply because the parts look similar. A round opening, such as the 1-1/2-inch opening listed for the 22-inch blade, is a different mounting style. Match shape and measurement before comparing other features.
Should I choose a smooth or notched blade?
Choose the blade style specified for your existing assembly and intended work. The supplied information identifies the Lasnten blades as notched and the 16-inch and 22-inch options as smooth. Do not assume one shape is a direct replacement for the other; compare the old blade and harrow requirements.
Does blade diameter matter?
Yes. These listings include 16-inch, 18-inch, and 22-inch blades. Diameter affects whether a blade matches the equipment’s design, so use the size of the installed blade or the manufacturer’s specifications rather than selecting by axle fit alone.
Am I buying a complete harrow?
No. The products in this guide are replacement blades or a flange bearing. A single-row disc harrow is an implement assembly, and these listings do not provide a complete frame, axle, or ready-to-use machine.
Frequently Asked Questions
Can the ALMULOO blade fit a 7/8-inch square axle?
No. Its listed fitment is for 1-inch or 1-1/8-inch square axles, and the description specifically excludes 7/8-inch axles.
How many blades come in the Lasnten listing?
The listing states that it includes four 18-inch notched blades.
Is the ST208-1N a disc harrow blade?
No. It is listed as a 1-inch square flange bearing unit for farming applications.
What should I verify before ordering a replacement?
Check blade diameter, blade style, axle or opening shape, mounting dimensions, and any equipment-specific part references. If those details are not provided in a listing, confirm them with the seller or equipment documentation.